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RESEARCH TECHNICAL FINAL REPORT 
I LA QUINTA CHANNEL ENVIRONMENTAL 
MONITORING PROJECT: BENTHIC DIVERSITY I Paul A. Montagna, Principal Investigator 
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and Christopher Martin 
Technical Report Number TR/94-003 
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RESEARCH TECHNICAL FINAL REPORT 
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I LA QUINTA CHANNEL ENVIRONMENTAL MONITORING PROJECT 
I BENTHIC DIVERSITY 
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MR. RAY ALLEN COASTAL BEND BAYS FOUNDATION, INC.
I P.O. Box 23025 CORPUS CHRISTI, TEXAS 78403-3025 
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I BY 
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PAUL A. MONTAGNA, PH.D. 
Principal Investigator 
Assistant Professor, Research Scientist 

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and 
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CHRISTOPHER MARTIN Research Scientist Assistant 
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THE UNIVERSITY OF TEXAS AT AUSTIN 
MARINE SCIENCE INSTITUTE 

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P.O. Box 1267 PORT ARANSAS, TEXAS 78373 
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University of Texas Marine Science Institute Technical Report Number TR/94-003

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March, 1994 

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I La Quinta Channel Environmental Monitoring Project -Benthic Diversity 
I TABLE OF CONTENTS 
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LIST OF FIGURES ii 
LIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii 
I LIST OF APPENDICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv 
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ABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 I Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Use of Benthic Biodiversity in Applied Studies . . . . . . . . . . . . . . . . . . . . 2 
I METHODS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Sampling Design and Study Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Hydrography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6I Sediment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 
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Benthic Abundance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Benthic Biomass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Statistical Analyses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 
Diversity Analyses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 

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I RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Hydrography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Sediment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Benthic Abundance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Benthic Biomass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Benthic Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 
DISCUSSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 

I ACKNOVVLEDGEMENTS ....................................... 30 

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REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 
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Fig. 1. Fig. 2. Fig. 3. Fig. 4. Fig. 5. Fig. 6. Fig. 7. Fig. 8. Fig. 9. Fig. 10. Fig. 11. 
LIST OF FIGURES 
Map of Corpus Christi Bay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Map of La Quinta Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Sediment composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Vertical distribution of macrofauna density . . . . . . . . . . . . . . . . . . . . . 14 Mean total of macrofauna density . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Vertical distribution of macrofauna biomass . . . . . . . . . . . . . . . . . . . . 16 Mean total of macrofauna biomass . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Macrofauna diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Species dominance curves for macrofauna density . . . . . . . . . . . . . . . 22 Principal factors analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Tree diagram of a cluster analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . 24 
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to a depth of 10 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Table 3: Biomass dominance of taxa at stations to a depth of 10 cm . . . . . . . 37 Table 4: Bay-wide taxa dominance. Mean n-m·2 to a depth of 10 cm . . . . . . . 39 
Table 	5: Abundance dominance of taxa at stations based on mean n-m·2 to a 
I 	depth of 10 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 
Table 	6: Average diversity indices in La Quinta Channel and Corpus Christi Bay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42I Table 7: Table 8: Table 9.

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La Quinta Channel species list . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Corpus Christi Bay species list . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Concentrations of trace metals in the sediment . . . . . . . . . . . . . . . . 57 
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Appendix I: Hydrographic measurements of La Quinta Channel. . . . . . . . . . . . 58I Appendix II: Sediment grain analysis of La Quinta Channel . . . . . . . . . . . . . . 60 
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Appendix Ill: Appendix IV: 

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La Quinta Channel and Corpus Christi Bay species list . . . . . . . 61 
La Quinta Channel and Corpus Christi Bay biomass list . . . . . . 120 

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I La Quinta Channel Environmental Monitoring Project -Benthic Diversity 
I ABSTRACT 
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Analysis of benthic invertebrate communities have been widely used in pollution 
detection and monitoring studies. The environment of concern is the La Quinta 
Channel, which is located in Corpus Christi Bay. La Quinta Channel serves several 
industrial plants and a naval station. Three stations were chosen in La Quinta Channel 
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and three reference stations were chosen in Corpus Christi Bay. Benthic animals were 
collected, identified, enumerated, weighed to assess if La Quinta Channel was different 
I from Corpus Christi Bay. The indicators were similar among all study sites, thus indicating a healthy environment in La Quinta Channel. 
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Background 
Man has had a negative effect on estuaries in a variety of ways. The obvious of which is chemical pollutants. The reduced current flow rates in estuaries causes 
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I settlement of sediments. Many chemical toxins and suspended wastes settle along with natural sedimentation. Accumulation of these toxins can have a devastating effect that can reach all the way up the food chain to man (Osborne and Grace, 1981). 
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The Coastal Bend Bays Foundation (CBBF) is a non-profit organization dedicated to the conservation and wise use of our natural resources, especially the bays and estuaries. The CBBF, in a cooperative effort with Occidental Chemical Co. and the Texas Natural Resource Conservation Commission (TNRCC), has initiated a I project to perform an environmental assessment of the La Quinta Channel in Corpus Christi Bay, Texas. 
I There is a need to determine the health of this body of water and to determine the baseline data for an on-going monitoring program. This project could also serve as a model for future expansion of the program to include as many as 20 or more I additional sites in future years. 
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Use of Benthic Biodiversity in Applied Studies 
Analysis of benthic (i.e., bottom dwelling) invertebrate communities may be used for many different purposes. One such purpose is the detection of pollution andI another is the estimation of overall anthropogenic effects on the environment (Oglesby, 1967). We expect indicator organisms to do for us today what canaries did for miners in the 18th and 19th centuries. Indicator organisms should have characteristics that I make them useful in applied research (Soule, .1988). 1) They should direct our attention to qualities of the environment. 2) They should give us a sign that some characteristic is present. 3) They should express a generalization about the

I 	environment. 4) They should suggest a cause, outcome or remedy. 5) Finally, they should show a need for action. 
I Benthic species and communities, rather than fish or planktonic fauna, have often been regarded as being the best indicators of organic pollution (Wass, 1967; Flint, Kalke, and Rabalais, 1981). There are several reasons why these organisms are good 
I 	indicators of environmental stress. 1) Because of gravity, everything ends up in bottom sediments. Even pollutants in freshwater will be transported . to the coastal sea bottoms. 2) Everything dies and ends up in the detrital food chain, which is utilized by
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the benthos. Pollutants are usually tightly coupled to organic matrices, therefore benthos have great exposure through their niche (food) and habitat (living spaces) to I pollutants. 3) Benthos are relatively long-lived and sessile, so they integrate pollutant effects of over long temporal and spatial scales. 4) Benthic invertebrates are sensitive to pollutants. 5) Bioturbation and irrigation of sediments by benthos effect the
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I There are also ecological models that provide a scientific basis for interpreting the data generated in benthic monitoring and detection studies. These approaches utilize many single species, community studies, and statistical models. One of the most 
I 	important concepts is the succession model proposed by Rhoads et al. (1978). They applied scientific theories of ecological succession and its relation to productivity to suggest ways that dredge-spoil could be managed to enhance productivity. One
I 	important aspect of this theory is that normal sediments will have a diverse assemblage and deeper dwelling organisms than a polluted or disturbed environment. Thus, we 

II have a scientific justification for biological diversity studies. Since this classic study, numerous other studies have demonstrated that benthic biological diversity is an excellent indicator of environmental health. The goal of the present study was to obtain I data on benthic abundance, biomass, and community diversity to assist in assessing 
the environmental condition of the La Quinta Channel. The assessment is based on the applications of ecological principles. 
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METHODS
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Sampling Design and Study Sites 
I 	The environment of concern is the La Quinta Channel, which is located in 
Corpus Christi Bay, Texas. The La Quinta Channel is a spur of the main Corpus Christi Ship Channel, which serves the Port of Corpus Christi. La Quinta Channel I serves several industrial plants, including Dupont Chemical, Reynolds Aluminum, and Occidental Chemical Company. Three stations were located in the Channel. Three reference stations were located in Corpus Christi Bay away from any obvious 

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I anthropogenic influence. Benthic samples were taken October 1992, January 1993, April 1993, and July 1993. Using three stations in each environment allows us to test for differences between the La Quinta Channel and Corpus Christi Bay. 
In the Corpus Christi Bay, the study sites have the designation of NCC, NCD, and NCE (Fig. 1). NCC is located 3,000 m southeast of the Nueces Bay Causeway at I a depth of 3.4 m. NCD is located 3,000 m northeast of the mouth of Fish Pass on the bay side of Mustang Island and is 2.7 m deep. NCE, which is 3.4 m deep, is 3,600 m south southwest of Point Mustang. The prefix NC-is used to conform with
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nomenclature used in other studies (Montagna and Kalke, 1992). NC stands for the Nueces-Corpus Christi Bay system. 
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The study sites located in La Quinta (LQ) Channel have been designated LQA, LQB, and LQC (Fig. 2). Station LQA is located behind Occidental Chemical Co., Inc.I on the south side of the channel; the collections were taken at a depth of 2.5 m. LQB is in Ingleside Cove, about midway through the channel, and is at a depth of 1.8 m. LQC, with a depth of 2.5 m, is about 225 m ESE of Naval Station Ingleside. 
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Fig. 1. Map of Corpus Christi Bay. Reference site NCC is located near the mouth of Nueces Bay, NCO is located north of the Laguna Madre, and NCE is just south of Point I Mustang. All stations are located away from any obvious anthropogenic influences. 
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Fig. 2. Map of La Quinta Channel. Station LQA is on the north end of the Channel, LQB is located in Ingleside Cove, and LQC is near the juncture of the La Quinta Ship 
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Channel from the Corpus Christi Ship Channel. 
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·1 

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---------------------------...-:::-­
.,,...,..
,,._.:,,,.. 
/,­
,,,,.// 
,."/ 
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I 	Hydrography 
During each collection period hydrographic measurements were taken at each 
I 	station using a Hydrolab Surveyor II. These measurements were taken just below the water surface and at the bottom of the water column. The information taken consisted of the following parameters (units and accuracy): depth (± 1 m), water temperature (±
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0.15 °C), pH (± 0.1 units), dissolved oxygen (± 0.2 mg/I), specific conductivity (± 0.015 -1.5 mmhos/cm depending on range), redox potential (± 0.05 mV), and salinity (ppt). I Salinity is automatically corrected to 25 °C. A visual estimate of weather conditions such as wind speed, wind direction, cloud cover, and wave height was also recorded. 
I 	Sediment 
Using techniques described by Folk (1964) we determined the percent of sand,I silt, and clay present at each station from sediment samples taken during the first collection period. These samples were placed in a jar and filled with distilled water and hydrogen peroxide and were allowed to sit for one week to digest organic material inI the sample. The samples were then wet filtered through a 62.5 µm Millipore Hydrosol SST filter using a vacuum pump to separate sand and shell hash from the silt and clay. Sediment that was left on the 62.5 µm filter was placed in a 50 ml beaker that was I previously weighed. That sediment was then dried at 80 °C for 24 hand then weighed. The sediment fraction that flowed through the 62.5 µm filter was placed in a 1,000 ml graduated cylinder. The temperature of the water in the cylinders was measured to I determine how long to let the sediment settle between subsamples. Each graduated cylinder had its contents well mixed and a 20 ml subsample was placed in a preweighed 50 ml beaker. After settling, another 20 ml subsample was taken and I placed in a preweighed 50 ml beaker. These fractions were all dried at 80 °C and then the total dry weight of the sediment was calculated. 
I 	Benthic Abundance 
Benthic abundance and community structure was measured using the standard 
I 	techniques that Montagna and Kalke (1992) have been using since 1984. The samples were collected using core tubes rather than grabs, because most grabs take a semi-circular "bite" out of the sediment and cause redistribution of the benthic
I 	community (Holme and Mcintyre, 1971). The core tubes were 6.715 cm in diameter and were taken from the surface of the sediment (0 cm) to a depth of 10 cm, yielding a sample area of 35.4 cm2 .
I Two types of coring methods were used for collecting: a simple corer and the Katke corer. The simple coring required a diver to insert the coring tube, which was open on both ends, into the sediment. A rubber stopper was placed on the top end, 
I 	which then acted as a suction device to hold the sample in place as the tube was pulled out and then capped on the bottom end. The Katke corer used the same basic technique as the simple corer, but does not require a dive. A long pole was used to 
I 	push the tube into the sediment from the side of a boat. To load the device the tube was clamped onto the end of the pole and then lightly capped by a rubber stopper so 
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I 	that air could escape but was able to stopper completely when the tube was pulled out of the sediment. The tube was then quickly brought to the surface so that the bottom of the tube could be capped, thus not allowing any of the sample to escape. This 
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I technique could not be performed in areas with high sand or shell content. These cores were then sectioned to depths of 0-3 cm and 3-10 cm to examine the vertical distribution of macrofauna. After sectioning, each individual sediment 
section was stored in a container filled with 10% formalin and 90% seawater to fix and preserve the live animals. The samples then remained in the formalin mixture until they were ready to be analyzed.
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Before analyzing a sample, the contents of the container were swirled and allowed to settle for a few seconds and then slowly poured through a 500 µm sieve. The container was then filled half full with fresh water, swirled, allowed to settle for a I 
few seconds, and then slowly poured through the sieve again. The swirling allowed the finer sediment and the lighter animals to rise to the top so that they could be decanted.I The heavier sediment and shells precipitated out and stayed on the bottom. This process was repeated until the majority of "lighter" things had been decanted and all that remained was the shell hash and the larger clay clumps. The sediment that had I been decanted was fine enough to flow through the sieve while the animals remained, thus allowing one to carefully rinse the contents of the sieve into a beaker, fill it partially with fresh water and set it aside. The contents remaining in the container were then I poured through two sieves (2 mm and 500 µm) that were placed one on top of the other with the 2 mm sieve on top. The clumps of sediment that did not flow through the top sieve was rinsed through with fresh water at low pressure. The remains of the top I sieve (usually consisting of worm tubes and shells) were then sorted under a magnifying lens and the preserved animals were picked out and placed in a second beaker, which was set aside with the first beaker. The contents that flowed onto the I 500 µm sieve were rinsed with fresh water at low pressure, to wash the remaining sediment through, and then those contents were carefully rinsed into a third beaker. Each beaker was then subsampled into a petri dish for easier study under a dissecting I scope where the animals were picked out, identified into their lowest possible taxon (i.e. species), and enumerated. The animals that were identified were cross-referenced with a reference collection that is available for Corpus Christi Bay. The debris that was not I picked out of the samples was discarded. 
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Benthic Biomass 
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After the species have been identified and enumerated, biomass was determined. Benthic biomass was measured using the standard techniques used by I Montagna and Kalke (1992). Mollusk shells were removed by an acidic vaporization technique (Hedges and Stern, 1984). The animals were separated into their major groups: polychaetes, crustaceans, mollusks, rhyncocoels, ophiuroids, sipunculids, and 
others. Small aluminum pans were then weighed out and each group was placed on its own pan; the purpose for this was to get a dry biomass weight. These pans were then placed into an oven and dried at 50 °C for a minimum of 48 hours, after which 
I 	another weight was obtained for the pan and animals together. A weight on the animals was calculated by subtracting the pan weight from the pan/animal weight. 
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I These numbers were then logged into a SAS data base, which cross-checked the data to make sure that the number of animals on the identification sheet matched the number of animals on the biomass sheet. 
Statistical Analyses 
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I Statistical analyses to reveal differences among sampling periods, stations and sediment depths was performed using general linear model procedures (SAS, 1985). Three-way analysis of variance (ANOVA) models were used where sampling dates, 
stations, and sediment sections were the three main effects. Two-way ANOVA models will be used where sampling dates and stations were the two main effects. AnalysesI were run on raw and log-transformed data. The distribution of the residual error terms from the ANOVA ·models were tested for conformance to normality. Orthogonal linear contrasts were used to test for the specific null hypothesis that La Quinta Channel was I different from Corpus Christi Bay. Tukey multiple comparison procedures were used to find a posteriori differences among sample means (Kirk, 1982). 
I Factor analysis with rotated and unrotated factors were used to determine if 
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communities were similar on different sampling dates or stations. Cluster analysis was used to find similar species composition among stations. 
Diversity Analyses 
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I Diversity was calculated using Hill's diversity number one (N1) (Hill, 1973). It is a measure of the effective number of species in a sample, and indicates the number of abundant species. It is calculated as the exponentiated form of the Shannon 
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diversity index: N1 = eH' (1) As diversity decreases N1 will tend toward 1. The Shannon index is the average 
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uncertainty per species in an infinite community made up of species with known proportional abundances (Shannon and Weaver, 1971). The Shannon index is calculated by: 
W--t,[(~H~)] 
(2)
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Where n; is the number of individuals belonging to the ith of S species in the sample and n is the total number of individuals in the sample. I Richness is an index of the number of species present. The obvious richness index is simply the total number of all species found in a sample regardless of their abundances. Hill (1973) named this index NO. Another well known index of speciesI richness is the Margalef (1958) index (R1). R1 is based on the relationship between the number of species ( S) and the total number of individuals (n) observed: 
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R1= S-1 (3)ln(n) 
I Although common, this relationship presupposes that there is a functional relationship between S and n. This assumption may not be justified in all cases. 
I Evenness is an index that expresses that all species in a sample are equally abundant. Evenness is a component of diversity. Two evenness indices, E1 and ES, have been calculated. E1 is probably the most common, it is the familiar J' of PielouI (197S). It expresses H' relative to the maximum value of H': 
I Et-__!f_-ln(N1) (4) ln(S) ln(N~ 
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E1 is sensitive to species richness. ES is an index that is not sensitive to species richness. ES is a modified Hill's ratio (Alatalo, 1981 ): 
ES-(1/l)-1I Nt-1 
,(S) 
s nln.-1)
where,l -I: /\ ' 
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i-1 n(n-1) 
I A is the Simpson ( 1949) diversity index. becomes more and more dominant. 
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ES approaches zero as a single species 
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I RESULTS 
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Hydrography 
Hydrographic measurements were taken at all stations during each collection I (Appendix I). Refractometer readings dropped from a mean of 30.5 ppt to 23.5 ppt in La Quinta Channel from October, 1992 to July, 1993 due to the amounts of rainfall that occurred during the year, especially in May, 1993. The trend was similar in CorpusI Christi Bay, although the salinity was slightly lower. There was a large seasonal drop in temperature, from 24 °C to 13 °C, between October and January, but the temperature went back to 40 °C by July. The pH remained constant and was similar I among each of the six stations all year. The dissolved oxygen (DO) concentration in the water had a mean of 7.0 mg/I for all stations except NCC and NCO, which were lower (5.5-6.5 mg/I), during October. In January and April the DO was higher (8.5-9.5 I mg/I) for all stations. By July it decreased to 5.0-6.5 mg/I and was similar at all stations 
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except for the bottom of NCO, where the DO was only 1.7 mg/I. The oxidation-redox potential remained constant during the entire year at all stations. Overall, the measurements recorded at each of the stations were very similar to one another. 
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Sediment 
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Sand was predominant at most stations (Fig. 3) The sand content was usually greater in the top 3 cm of the samples (Appendix II). This measurement was taken 
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only once in October, 1992 (NCO was taken October, 1991). All of the La Quinta Channel stations had sand making up more than 75% of the sediment. Both layers at NCC consisted mostly of silt and clay, making up 79.7% in the upper section and 
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89.2% in the lower section, while there was more sand in NCO (82.4%) and NCE (56.7%); Sand made up the largest percentage dry weight for all stations, except for NCC. 
Benthic Abundance 
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There were more individuals in the top 3 cm during each study period, except for July, 1993 (Fig. 4, Appendix Ill). Polychaetes made up the majority of individuals I in the top and bottom sections of all stations sampled (Table 1, Appendix Ill). Polychaetes made up 77% of the mean total abundance found in the top 3 cm and 90% for the bottom 7 cm of La Quinta Channel and 84% of the total species in the upper I section and 90% in the bottom section of Corpus Christi Bay. The percent difference between the polychaetes in the top section and those in the bottom section in La Quinta Channel was lower than that of Corpus Christi Bay. La Quinta Channel had anI average percent difference of 4%, in favor of the top section, while in Corpus Christi Bay it was 32%, again in favor of the top 3 cm. There were significant interactions between the sections, dates, and stations for the density (n-m-2) as well. The average I number of species found in the top section for all stations was 13,024 n-m-2, which is 61% of the total average of both sections. The average of 12,126 n-m-2 individuals in the top section of LOA, however, was lower than that of bottom section (13,307 .m-2).
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I Also, October, 1992, and January and April, 1993 had an average mean of 67% density in the upper layer while there was only 41% density in the upper layer for July, 1993. An examination of the residuals was done for density. Here the residuals did conform 
to a normal distribution. The bell-shaped curve had a coefficient of skewness of only 
0.24 and the coefficient of kurtosis was 1.4. The skewness, being so small, had no I affect on the boxplot, the median and mode overlapped. The normal probability plot had the raw data converging on the straight line, thus repeating that the distribution was normal.
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The mean density of macrofauna taxa at all stations combined to a depth of 1 O cm was dominated by polychaetes with a mean of 17,980 -m-2 or 84% of the total taxa I (Table 2). For the individual stations polychaetes still dominated each station (Table 
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3). Polychaetes were most abundant at LQA with a mean of 22,691 -m-• The fewest number of polychaetes occurred at NCE with 15,955 -m-2. There were significantI interactions between the dates and stations for the mean density to 10 cm (Fig. 5). Stations LQA and NCC are significantly different from one another, as seen in the Tukey test for mean density (n-m-2) to 10 cm: 
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25,433 21,722 21,060 20,895 20,351 18,295 LQA NCO LQB LQC NCE NCC 
The residuals of macrofauna taxa density at all stations combined to a depth ofI 10 cm conformed to a normal distribution. The coefficient of skewness that occurred to the bell-shaped curve had no affect on the overlapping of the median and the mode. The normal probability plot had the raw data converging on the straight line. According I to the orthogonal linear contrast, La Quinta Channel was not significantly different 
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(P=0.0873) from Corpus Christi Bay. La Quinta Channel had an average of 25,796 -m-and Corpus Christi Bay had 20, 123 -m-2• The three stations in La Quinta Channel and ti NCE in Corpus Christi Bay were similar in the number of species throughout the study periods, while NCO was consistently lower (Fig. 6). The highest number of species,II however, was found to be in LQC. 
Benthic Biomass 
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I La Quinta Channel and Corpus Christi Bay both had a greater biomass (gm-2) in the bottom (3-10 cm) sediment section (Fig. 7). La Quinta Channel had an average of 72% and Corpus Christi Bay averaged 69% of the biomass in the bottom sections. · 
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Polychaetes made up the greatest biomass at all stations and sections ranging from 0.8 to 9.3 g.m-2 (Table 1). The biomass of all of the taxa, except polychaetes, was greater in the top 3 cm than in the bottom 7 cm (Appendix Ill). The polychaete biomass in the 
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bottom section made the overall average biomass of the bottom section greater than that of the top section. There were significant interactions between the sections, dates, and stations for the biomass. Overall, the percent of biomass found in the top 3 cm 
was 29%, but composition was different among stations. LQA had 17% in the top section, LQB had 35%, there was 39% at LQC, NCC had 23%, NCO was found to 
I 
11 
I 
I 	contain 50%, and NCE had 33% (Table 1). The high percentage of biomass at NCO occurred in January and April, 1993, when NCO had 64% of the biomass in the top 3 cm while the other 2 sampling periods had less than 40% each in the top 3 cm at NCO.
I 	After examining the residuals (errors) of the biomass to determine if they conformed to a normal distribution it was determined that they did not. Although they are not normal, they still present a bell-shaped curve. The problem with the bell curve is that it has a 
I 
I small coefficient of skewness (1.1). This skewness was not enough, however, to affect the boxplot where the median and the mode still overlapped. The coefficient of kurtosis is 4.1 and the bell curve was very narrow. Another way to determine how far the bell 
curve is from normal is to construct a normal probability plot, which draws a straight line and then plots the raw data around it. Although the raw data did not fit the straight line I exactly, it never veered far from that line demonstrating that, although the residuals were not normal, they were not bad enough to warrant transformation. 
I The mean biomass of macrofauna taxa to a depth of 10 cm at all stations was dominated by polychaetes with a mean of 9.9 g.m-2 or 83% of the total taxa (Table 4). Polychaete biomass to 10 cm was dominant at each station (Table 5). Other than at I NCC and NCO, there were no stations that had a taxa that came close to polychaetes in the amount of biomass present. The polychaetes at NCC weighed 6.42 g.m-2, ophiuroids were next with 4.27 g.m-2, the mollusks were the third highest but weighed 
2
I 	much less with only 0.7 g.m-. At NCO, the polychaetes weighed very little, only 1.76 g.m-2, and the rest of the taxa were between 0.01 and 0.27 g.m-2• In La Quinta Channel, the polychaete biomass was never less than 83%. For Corpus Christi Bay,
I 	the polychaetes were 55%, 72%, and 89% for stations NCC, NCO, and NCE, respectively. There were significant interactions between the dates and stations for the mean biomass to 10 cm (Fig. 8). While station NCE is not significantly different from 
I 
I most of the stations, NCO is significantly different from all of the other stations, a fact that can be seen in the following Tukey test for mean biomass (g·m-2) to 10 cm at each station: 
I 
20.1 15.7 11.8 10.9 10.3 2.4 LQA NCE NCC LQB LQC NCO 
I 
The residuals for the mean biomass to 10 cm did not conform to a normal distribution. There was still a bell-shaped curve that showed a small coefficient of 
I 
skewness, but did not cause the overlapping of the median and the mode not to occur. The coefficient of kurtosis was also close to normal distribution. All of this wasI confirmed with the normal probability curve because the raw data veered only slightly from the normality line, but not enough to warrant transformation. Orthogonal linear contrasts that tested for the specific null hypothesis that La Quinta Channel was 
different from Corpus Christi Bay showed that there was a significant difference (P=0.0112) between the two. La Quinta Channel had an average of 13.8 g.m-2 and Corpus Christi Bay had an average of only 10.0 g.m-2• Without station NCO being
I 	figured into the Corpus Christi Bay average, the average went up to 13.8 g.m-2• 
I 
12 
I I I I I I I I 
11 

I I I I I I I I I I 
I I I I I I I I 
Fig. 3. Sediment composition. Percent dry weight of sediment components in each station. Station NCO sample taken in October, 1991. All other stations were taken in 
I 
October, 1992. 
I I I I I I I 
13 I 
I I I I 
I SAND 
I I I I I 
LaOuinta Channel Sediment Composition (% dry weight) 
Station= LOA 

Station= LQC 

SAND 
I I I 

Station= NCO
I 
I 
SAND
I I 
Station= LOB 
CLAY 

RUBBLE 
OTHER
SAND 
SILT 
Station= NCC CLAY 
CLAY OTHER 
RUBBLE SAND 

SILT 
Station= NCE 

CLAY 

RUBBLE SAND 
SILT 
Fig. 4. Vertical distribution of macrofauna density (mean no .. m-2) in La Quinta Channel and Corpus Christi Bay for each station and sampling period. Sediment cores were vertically sectioned at 0-3 cm and 3-10 cm intervals. 
14 

LaQuinta Channel Macrofauna Abundance (n · m-2) 
50,000 
40,000 
30,000 
20,000 
10,000 
0 LLLNNN LLLNNN LLLNNN LLLNNN Station QQQCCC QQQCCC QQQCCC QQQCCC 

ABCCDE ABCCDE ABCCDE ABCCDE 
I-OCT92 -1 I-JAN93 -1 I-APR93 -1 I-JUL.93 -1 Date 
Section (cm) 3-10 0-3
~"' "'~ 
I I I I I I I 
' 
Fig. 5. Mean total of macrofauna density in La Quinta Channel and Corpus Christi Bay for each station and sampling period. Mean no.-m-2 to a depth of 10 cm. I 
I 
I 
I 
I 
I 
I 
I 
I
15 
I 

I 
I 

I 
LaQuinta Channel Macrofauna Abundance (n . m -2) 
60000
I I I I 
-........... -+ 

-........... -­I 13-----------------~ ---­
-~ 
~-""'"-­
/ --A ------­
+ --_r---\ \ -------/ ~ ----~"'-0
/ ---\ --+ -/ ' -­
I if \ \__ // ~.... --o 10000 \ /--~ ~ 
/ '
I ')(""' ---~ 
I 0 
OCT92 JAN93 APR93 JUL93 
I Date 
I Station o o o LQA e-o-e LQB E3-13--EJ LQC * * * NCC 7<-*-X NCO +-+-+ NCE 
I I I I I 
OCT93 

I I I I I I I I I I I I I I I I I I I I I I I I I I I 
Fig. 6. Vertical distribution of macrofauna biomass in La Quinta Channel and Corpus 
Christi Bay for each station and sampling period. Measured as g.m-2• Sediment cores 
were vertically sectioned at 0-3 cm and 3-10 cm intervals. 	I I I I I I I I I
16 

I 
I 

LaQuinta Channel Macrofauna Biomass (g · m -2)
I I I I I I I I 
I 0 I I I I I I 
LLLNNN LLLNNN LLLNNN LLLNNN Station QQQCCC QQQCCC QQQCCC QQQCCC ABCCDE ABCCDE ABCCDE ABCCDE 
f-OCT92 ~ f--JAN93 ---1 f-APR93 ---1 f--JUL93 ~ Date Section (cm) 3-10 ~""~ 0-3 
I I I I I I I I I I I I I I I I I 
\ 
I 
·1 
I I I I I I I 
Fig. 7. Mean total of macrofauna biomass in La Quinta Channel and Corpus Christi 
Bay for each station and sampling period. 
Mean g.m-2 to a depth of 10 cm. 
1 
I I I I I I I I
17 
I 
I 
I 

LaQuinta Channel 
2
I Macrofauna Biomass (g . m -) 
I 
Biomass 
40 
I 
I 
30 I 
1. 
I I I I I 

I I I I 
~------------------------~ 

o o o LOA e---0-e LOB G --G--EJ LQC * * * NCC 7<~x NCO + -+ -+-NCE 
Using R 1 to indicate species richness, there is not a significant interaction 
I 
I between date and station. There were differences among the stations (P=0.0001) and the dates (P=0.0001 ). There was a significant difference between the stations in La Quinta Channel and in Corpus Christi Bay. The La Quinta Channel stations had an 
average of 4.6 compared to 3.5 found among Corpus Christi stations (Table 6). The overall mean for R1 is 4.0. The Tukey test for the mean of R1 at each stations is: 
I 5.4 5.0 4.7 3.6 3.2 2.3 LQC NCE LQA LQB NCC NCO 
I 
Species diversity was calculated with Hill's NO and N1 (Table 6). NO simply measures the total number of species in a sample. In this study, the mean NO for all I stations combined was 17.9. There was no significant interaction between dates and stations for NO. There were significant differences among the stations (P=0.0001) and the dates (P=0.0001). There were significant differences between the mean number I of species in La Quinta Channel (20.9) and Corpus Christi Bay (14.9). The Tukey test for mean number of species (NO) at each station for the entire year appeared as follows:
I 
I 
24.2 22.2 22.0 16.7 13.1 9.3 LQC NCE LQA LQB NCC NCO 
I 
Hill's N1 is an indicator of the number of dominant species in a sample. The mean number of species for N1 was slightly lower with 10.7, because it takes into 
account only the abundant species. Even though there were no significant differences between the stations and dates for N 1, there were significant differences among the dates (P=0.0001) and stations (P=0.0001) (Fig. 8). There was a significant difference 
I 
between the two systems; La Quinta Channel had an average mean of 12.4 species and Corpus Christi Bay had an average mean of 9.0 species. The Tukey test that I follows is of the mean number of abundant species (N1) at each station: 
14.5 14.4 12.9 9.9 8.2 4.5I LQC NCE LQA LQB NCC NCO 
I The variable E1 was chosen to indicate evenness because it is calculated with 
I 
NO and N1. When E1 is equal to 1.0 then there is complete evenness. The mean of E1 for all stations combined throughout the year was 0.78, which means that there was a high level of evenness. There were significant interactions between dates and 
I 
stations (P=0.0001 ). Station NCO had the 2 lowest evenness indices and it was the lowest in evenness 3 out of 4 times (Table 6). During April, however, it had the highest 
degree of evenness, which was the second highest evenness value overall. 
I 
18 
I 
I Plotting the Dominance-diversity curves (Fig. 9) presented a graphic illustration that NCO had the least evenness and had a very different curve from all of the other stations. The curves of the other stations were not significantly different from each 
I 	other and showed a good evenness. Station NCC, which had a curve that was similar to NCO though not as drastic, was not significantly different from the other stations, but did not have a very good evenness. The Tukey test for the mean of E1 for each station 
I 	has NCO being the only station that is significantly different from the rest and NCE is the station with the most species evenness overall: 
I 0.855 0.822 0.819 0.808 0.795 0.606 NCE LOA LOC LOB NCC NCO 
I 

I 
I 

I I I I I 
··1 

I I I I I 
Factor analysis indicated that stations LOA, LOB, LOC, and NCE were most similar, while stations NCC and NCO were similar to each other, but different from the rest (Fig. 10, Table 7, Table 8, Appendix IV). Factor 1 analysis explained 81% of the variance, and Factor 2 analysis explained only 19% of the variance. Station NCO separated on the first factor and NCC and NCO separated on the second factor because there were different polychaetes present. A cluster analysis (Fig. 11) demonstrated that NCC and NCE were most alike in species composition. It also demonstrated that station LOC was most like the Corpus Christi Bay stations, while it considered station LOA to be the most unique station. 
Polychaetes were the dominant form of benthos at all stations during the entire study period. The most dominant and ubiquitous species throughout entire study was Mediomastus ambiseta. with a combined average of 25,906 individuafs.m-2 from all stations. This subsurface deposit-feeding species was most abundant at NCC (6,264 individuafs.m-2) (Table 7). All stations, except for NCO, had Mediomastus ambiseta as the dominant polychaete. 
19 

I I I I I I I I I I I I I I I I I I I I I I I I I I I 
Fig. 8. Macrofauna diversity at different stations and times. Total diversity to a depth 
of 1 O cm. Represents each station and sampling period in La Quinta Channel and I 
Corpus Christi Bay. 
I I I I I I I 
20 I 
I 
I 

La Quinta Channel Macrofauna Diversity 
I I I I I I I I I I 

I 
LLLNNN LLLNNN LLLNNN L L L N N N QQQCCC QQQCCC QQQCCC QQQCCC AB CC DE ABCCDE ABCCDE ABCCDE 
I 
10JUL93
090CT92 15JAN93 09APR93 
I I I 
Station 
Date 
I I I I I I I I I I I I I I I I I I I I I I I I I I I 
Fig. 9. Species dominance curves for macrofauna density in the La Quinta Channel I 
and Corpus Christi Bay. Percent abundance vs. species rank for all samples 
combined. 
I I I I I I I I 
21 I 
I I I I I 
La Quinta Channel and Corpus Christi BayI Dominance -Diversity Curves (All Data) 
I 
Abundance 
1100 
I 
1000 
900 
I 
I 800 
700 

I 
I 600 500 400 
300 
I 
200 
I 100 1 100
I 
I Station o o o LQA o o o LQC 
I I
* * * NCC I NCE 

10 
Species Rank 
o o o LQB >< )( 3< NCO 
I 
I 
I 

I I I I I I I I I I I I I I I I I I I I I I I I I I I 
Fig. 10. Principal factors analysis for all stations in the La Quinta Channel and Corpus I Christi Bay. 
I I I I I I I I I 
22 

I 
I 

I 
LaQuinta Channel Macrofauna Species 

Principal Factors Analysis 
I 
Factor 1 
I I I I I I I I I 
II 

1.0 
0.8 
0.6 
0.4 
0.2 
0.0 -0.2 -0.4 -0.6 -0.8 -1.0 
-- 
LO<(_<M;E  
LOB  NCC  
- NCO  


..  

I I I I  I  I  I I I I  

-
-
I 
-1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 
Factor 2 
I I I I 
L___ 
I I I I I I I I I 
11 

I I I I I I I I I I I I I I I I I
Fig. 11 . Tree diagram of a cluster analysis. Single linkage method (nearest neighbor) 
using 1-Pearson correlation coefficient for all stations in the La Quinta Channel and 
Corpus Christi Bay. I 
I I I I I I I 
23 I 
I I I I I I 
I 
TREE DIAGRAM 
DISTANCES 
0.000 0.500 
LOA
I 
NCO I LOC 
-
NCC 
l
I NCE . -I 
11 
LOB 
I I I I I I 
24 
·1 
DISCUSSION 
The objective of this study was to determine if La Quinta Channel, an area that 
I 	has anthropogenic disturbances, has suffered any environmental decline relative to other areas of Corpus Christi Bay that have not had as much anthropogenic influence. The approach was to take sediment samples and analyze benthic community structure 
I 
I and diversity. Benthic organisms can be affected by other influences as well as anthropogenic disturbances. We must examine all the factors that explain or influence the benthos to assess a relative role to anthropogenic disturbance. 
Sediment was most similar between stations LOA, LQB, LQC, and NCO, which I are all stations in bay margin areas. Shideler (1980) and Flint and Younk (1983) noted that the marginal areas of Corpus Christi Bay were made up of muddy and shelly sand. Sand made up greater than 75% of the total sediment composition at these stations. I The sand was fine and muddy enough to allow Mediomastus ambiseta to live in these areas. Previous studies performed near the location of LQC show that the sediment is made up primarily of fine sand with small amounts of shell (Flint et al., 1980; Flint I and Kalke, 1986). The stations that were located more towards the middle of the bay, . NCC and NCE, were mainly muddy, which is also noted in the study done by Shideler (1980). In a previous study (Montagna and Kalke, 1992) NCC had an average of 7.9% 
I 
I sand and NCO had an average of 7 4.5% sand, which was comparable to the 10.5% and 82.4% found in this study. In general, the sediment characteristics were similar at all stations, except NCO, indicating that differences among stations were probably not due to differences in sediment texture. 
Odum (1969) proposed a conceptual model for succession based on terrestrial 
I 
I observations. This succession model has been used in marine ecosystems in later studies (Rhoads et al., 1978; Flint et fil.., 1980; Flint and Younk, 1983; Kennish, 1986; Gray et al., 1988). Odum's model suggests that in the early stages of succession (the time following a recent disturbance) a pioneering species is the first to inhabit the area. These organisms are small and r-selected (i.e. they have short life cycles and high rates of reproduction). In the benthos these are suspension feeders or surfaceI deposit-feeders (Rhoads et al., 1978; Flint et fil,_, 1980; Kennish, 1986; Gray et al., 1988). With time, the disturbed area matures and the organisms that move in are larger and k-selected (i.e. have longer life cycles and lower rates of reproduction). I These are subsurface deposit-feeders in the benthos (Rhoads et al., 1978; Kennish, 1986; Gray et al., 1988). Not only are the organisms of the mature stage larger, they are also found deeper in the sediment (Rhoads et .fil_, 1978; Flint et .fil., 1980; Kennish, I 
1986; Gray et ID,_, 1988). This means that the subsurface sediments would have a greater abundance and biomass than the surface sediments in mature sediments. This I model gives us a method to interpret benthic community structure data. 
Abundance and biomass in the bottom sediment section (3-10 cm) of this study I was usually as great or greater than that of the top 3 cm of sediment. This finding is consistent with the succession model. It indicates that there was no disturbance during our study of the La Quinta Channel. 
I 
25 
I Mediomastus ambiseta is a non-selective subsurface-deposit feeder (Fauchald and Jumars, 1979; Flint et g1_, 1980; Flint and Kalke, 1986). It is not considered a pioneering species (Fauchald, 1977). It is a k-selected species and usually follows a 
I 
I pioneering species that oxygenates the deeper sediment strata by building tubes; M. ambiseta is then able to inhabit the deeper sediments (Flint et fil_, 1980). Mediomastus ambiseta was the most abundant and ubiquitous species throughout this study. It was the most dominant species at each station during each sampling period, with the exceptions of NCC and NCO in October, 1992 and NCO in April, 1993. This polychaete was compared to the one identified earlier as M. californiensis in previousI studies (Holland et&. 1973; Holland et al., 197 4; Holland et fil_, 1975; Flint et fil_, 1980; Flint et&. 1981; Flint and Younk, 1983; Flint et g1_, 1983; Flint and Kalke, 1986; Montagna and Kalke, 1992) and was determined to be the same species, but had been I 
misidentified until a couple of years ago (Rick Kalke, personal communication). No recent disturbance was visible during any of the sampling periods as indicated by the II overall dominance of M. ambiseta. 
Pioneering species are those benthic organisms that are r-selected and are the I first group to colonize an area of recent disturbance, either natural or anthropogenic in nature. Pioneering species were found in small numbers at all stations and have been reported in past studies. Pioneering species that occurred in this study and previous I studies (Flint et fil_, 1980; Flint and Younk, 1983; Flint and Kalke, 1986; Montagna and Kalke, 1992) include: Streblospio benedicti. Paraprionospio pinnata. Apoprionospio pygmeae. Minuspio cirrifera. Onuphis eremita oculata. Owenia fusiformis. MuliniaI lateralis. and Abra aegualis. There was a possible disturbance at stations NCC and NCO in October, 1992 and with station NCO in April, 1993. High numbers of pioneering species were found at these stations and they may be a possible example I of an early succession communities. In October, 1992, there were high numbers of S. benedicti in the surface sediment (5,ooo.m·2 at NCC and 11,500-m-2 at NCO) (Fig. 6), but there was very little biomass (3.46 g.m-2 at NCC and 1.15 g.m-2 at NCO) (Fig. 4). I Station NCO had another case of a large number of r-selected species in April, 1993 when oligochaetes numbered 4,ooo.m·2, but this time there was no M. ambiseta found in the samples. There are three possibilities for these observations. 1) There may I have been a species recruitment in those areas, 2) there may have been a local disturbance (e.g., that caused by a shrimp trawl), or 3) perhaps sampling error (i.e., S. benedicti may be there constantly, but only in a localized area that was never sampled 
I 	again). Streblospio benedicti was an abundant polychaete on occasion at some of the stations in past studies (Flint et al., 1980; Flint et fil_, 1983). Since large numbers of any of these pioneering species were not consistently encountered there is no evidence 
I 
that a recent disturbance took place. 
I The dominance of deeper-dwelling organisms, M. ambiseta. and the low numbers of pioneering species indicates that Corpus Christi Bay and La Quinta Channel were not disturbed in the short time before each sampling period. However,I it would be incorrect to state that there never was a disturbance in these areas. Firstly, the sampling frequency was low (sites were sampled only once every 4 months). Sampling only covered six stations; these stations are then supposed to representative 
I 
26 
I 
I of the entire bay. Each sampling area was only 2 m2• The sampling in Corpus Christi Bay, which was the control area, took place in areas with little or no anthropogenic influences (i.e. trawling, dumping, or sewage release). No visible anthropogenic 
I 
influences, such as trawling or boating, were witnessed in the shoal areas of the La Quinta Channel, either, but they could have occurred. The sampling period took place during a wet year. According to Kalke and Montagna (1991), benthos do better during 
I 
wet years. Lastly, no dredging occurred in the La Quinta Channel during the study period (the last dredging occurred during early-to mid-1991). However, the study done by Flint and Younk ( 1983) had six stations at the junction of the La Quinta Channel and 
I 
the Corpus Christi Ship Channel. These stations were sampled every month. Mediomastus ambiseta was one ofthe dominant species and occurred in every sample, but so was the pioneering species Paraprionospio pinnata. With these caveats in mind, 
the present data suggests a lack of disturbance. 
'I When a disturbance has not occurred recently then the benthic diversity will be high, however, if an area was disturbed recently then the diversity will be low. Diversity was even at every station except for station NCO. Using H', the mean overall diversity I at the La Quinta Channel stations was 2.45 and the Corpus Christi Bay stations had 1.99. The Bay stations without NCO had a diversity index of 2.32. Measures of species diversity (H') in previous studies of the La Quinta Channel averaged 1.7 4 I (Holland et gl, 1974), 1.83 (Holland et al., 1975), 3.76 (Flint et al., 1980; Flint and Younk, 1986), and 3.49 (Flint et gl, 1983). Corpus Christi Bay averaged 2.89 (Holland et al., 1974), 3.26 (Holland et al., 1975), 1.63 (Flint et al., 1983), and 2.41 (MontagnaI and Kalke, 1992). The diversity indices of this study were within the range of past 
I 
studies of the study areas, again supporting the conclusion that La Quinta Channel was not recently disturbed. 
I 
The average abundance and biomass to a depth of 10 cm during this study period are analogous to those of previous studies. There was an average of 22,470 
I 
individuals·m-2 and 13.8 g.m-2 in the La Quinta Channel stations and 20,128 individuals·m-2 and 9.8 g.m-2 for Corpus Christi Bay (Table 2, Table 3, Table 7, Table 8). The numbers of individuals found in La Quinta Channel in previous studies (Flint 
I 
et gl, 1980; Flint et al., 1983; Flint and Younk, 1983) were much lower, averaging 9,000 individuals·m-2• The likely reason our numbers were higher is that we used a core to sample, rather than a Peterson grab. Their biomass was figured as wet weight 
and cannot be compared. The numbers of individuals found in Corpus Christi Bay by Montagna and Kalke (1992) averaged 20,000 individuals·m-2 and only 4.4 g.m-2 • Even though the numbers of individuals·m-2 was the same between the two studies, our 
I 
I biomass was higher because NCC had ophiuroids throughout the sampling period which added 4 g.m-2 to our total. No ophiuroids were reported by Montagna and Kalke (1992). When the techniques employed for collecting and measuring benthos in this 
study are similar to those of previous studies, the abundance and biomass are comparable.
I 
The large amounts of individuals and biomass indicates that the sediment was not highly contaminated with pollutants. Sediment was analyzed for trace metals, 
I 
27 
I 
I 
I volatile organics, and extractable organics by AnalySys, Inc. (1993). They sampled stations 1A, 18, 2A, 28, 3A, and 38. The A stations were in the Channel, while the 8 stations were located in shoals. AnalySys stations 18, 28, and 38 were the same asI LQA, LQ8, and LQC reported in the present study. The concentrations of all of the volatile organics were below detection limits. Most of the extractable organics concentrations were also below detection limits, except for dibutyl phthalate (n-8utyl Phthalate}, which has a lower testing limit of 200 µg/Kg. Dibutylphthalate, which is used as an insect repellant for the impregnation of clothing and is soluble in 2500 parts water (8udavari, 1989), was present at levels of 650 µg/Kg, 1700 µg/Kg, and 3900 I µg/Kg at stations 18, 2B, and 3B, respectively. There were several trace metals that were detectable, but not by much (Table 9). After comparing the levels of trace metals with a report written by Long and Morgan ( 1991), all of the trace metals wereI considered to be in the "no effect" range. Other studies in Ingleside Cove (Fig. 2) examined concentrations of pollutants in the oyster Crassostrea virginica (Presley et gl, 1990; Sericano et gl, 1990; Sericano et gl, 1992; Garcia-Romero et gl, 1993).I Pesticides, including DDT and non-DDT, PCB's, and chlordane-related pesticides, were at or below the average found along the Texas coast. The pesticide DDT was found at levels of less than 1 ng.g-1 dry weight, the non-DDT pesticides were found at levels of 1 ng.g-1 dry weight, and PCB's were measured to be less than 10 ng.g-1 dry weight (Sericano et gl, 1990). The chlordane-related pesticides averaged 8.89 ng.g-1 dryI weight (Sericano et al., 1992). Garcia-Romero et al. (1993) determined that an anti-fouling paint (Tributyltin) and its degradants were above the average for the Texas coast with 200 ng Sn-g-1 for tributyltin, 75 ng Sn-g-1 for dibutyltin, and 30 ng Sn-g-1 forI monobutyltin. A study by Presley et gl(1990) calculated that oysters accumulated 100 ppb of mercury in the Ingleside Cove area, which was lower than average amounts found along the Texas coast. La Quinta Channel, which has some pollution in it,I appears to be as clean or cleaner than most bays along the Texas coast. 
There was dredging in Corpus Christi Bay from the junction of the La Quinta
I 	Channel and the Corpus Christi Ship Channel to Beacon 82 (1 mile south of Harbor Bridge), but there has been no dredging in the La Quinta Channel since July, 1991 (Robert Beggs at Corps of Engineers, Corpus Christi, personal communication). There
I 	were 1,011 ships that went through the Inner Channel (part of the Corpus Christi Ship Channel) and 179 that went through the La Quinta Channel in 1992; 1,124 ships went through the Inner Channel and 124 went through the La Quinta Channel in 1993 (Port 
I 	of Corpus Christi, personal communication). The ship traffic of concern were ships with drafts of over 10 meters. While shrimper traffic has been witnessed during each of the sampling periods, we have no information about how heavy the traffic was during the 
I 	study year or which specific areas were trawled. Heavy storrhs, such as hurricanes or tropical storms, did not come through the Corpus Christi Bay system during the sampling period either. Considering the above, apparently no true disturbances took 
I 	place in the Corpus Christi Bay system during this study. 
Throughout the study period, both the La Quinta Channel stations and theI Corpus Christi Bay stations had similar benthic diversity, abundance and biomass and community structure. During the study, there was little evidence that disturbances 
I 
28 
I 	occurred, except for the simple occasions at NCC and NCO. Based on an analysis of the data from the present study and a comparison with data from previous studies, there is no evidence that the stations sampled in La Quinta Channel are less healthy 
I 	or undisturbed than the stations sampled in Corpus Christi Bay. 
I I I I I I I I I I I I I I I 
29 
This project was initiated by the Coastal Bend Bays Foundation, local industries, 
I 	the Texas Water Commission, and other environmental groups to perform an environmental assessment of the La Quinta Channel in Corpus Christi Bay. This project was partially supported by a grant from the Coastal Bend Bays Foundation to 
I 	Dr. Paul Montagna, research scientist at UTMSI. Partial support was also provided by the University of Texas Marine Science Institute, the Texas Water Development Board under grant numbers 93-483-352 and 94-483-003, and Texas A&M University, Sea
I 
Grant College Program, project number R/ES-57. 
I Richard D. Katke, a research associate at UTMSI was instrumental in the collection of the samples and in aiding with the identification and techniques. Antonio Mannino, a M.S. candidate at UT Austin, and Robert Burgess and Robert Rewolinski, I research scientist assistants at UTMSI, helped in the collection of the samples. Carrol Simanek aided with the computer work and data management. 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 


30 

I 
ALATALO, RV. 1981. Problems in the measurement of evenness in ecology. Oikos. 
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BUDAVARI, S. 1989. The Merck Index: An encyclopedia of chemicals, drugs, and biologicals. Merck & Co. Rahway, New Jersey. p. 1606 plus tables and indexes. 
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FAUCHALD, K. 1977. The polychaete worms: definitions and keys to the orders, families, and genera. Natural History Museum of Los Angeles County. Science I Series. 28:1-190. 
FAUCHALD, K. and P. JUMARS. 1980. The diet of worms: A study of polychaete I feeding guilds. Oceanographic and Marine Biology Annual Reviews. 17:193-284. 
I FLINT, R.W. and RD. KALKE. 1986. Niche characterization of dominant estuarine benthic species. Estuarine, Coastal and Shelf Science. 22:657-674. 
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I 
I FLINT, R.W., RD. KALKE, and S.C. RABALAIS. 1981. · Quantification of extensive freshwater input to estuarine benthos. Contract number IAC(80-81), Texas Department of Water Resources, Austin, Texas. 55 p. plus appendices. 
FLINT, R.W., RD. KALKE, and M.J. MCCOID. 1983. The Corpus Christi Bay ecosystem: Research applied to management. Report to Texas Department of I Water Resources. Contract #IAC (82-83) 1900. 47 p. plus appendices. 
FLINT, R.W., M.J. POFF and J. YOUNK. 1980. A benthic infauna! survey of the 
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I Corpus Christi ship channel area near Ingleside, Texas. Final report submitted to Natural Gas Pipeline Company of America, Chicago, Illinois. 80 p. plus appendices. 
FOLK, R.L. 1964. Petrology of sedimentary rocks. Hemphill's Press. Austin, Texas. I 155 p. 
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I R. ROSENBERG, and RM. WARWICK. 1988. Analysis of community attributes of the benthic macrofauna of Frierfjord/Langesunfjord and in a mesocosm experiment. Marine Ecology Progress Series. 46: 151-165.
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31 

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I HEDGES, J.I. and J.H. STERN. 1984. Carbon and nitrogen determinations of carbonate-containing solids. Limnology and Oceanography. 29:657-663. 
I HILL, M. 0. 1973. Diversity and evenness: a unifying notation and its consequences. Ecology. 54:427-432. 
I HOLLAND, J.S., N.J. MACIOLEK, RD. KALKE, L. MULLINS, C.H. OPPENHEIMER. 1973. A benthos and plankton study of the Corpus Christi, Capano, and I Aransas Bay systems I. Report on data collected during the period September, 1972 -June, 1973. Report to Texas Water Development Board. 122 p. plus appendices. 
I 
HOLLAND, J.S., N.J. MACIOLEK, RD. KALKE, L. MULLINS, C.H. OPPENHEIMER. 1974. A benthos and plankton study of the Corpus Christi, Capano, andI Aransas Bay systems II. Report on data collected during the period July, 1973 -April, 1974. Report to Texas Water Development Board. 121 p. 
I HOLLAND, J.S., N.J. MACIOLEK, RD. KALKE, L. MULLINS, C.H. OPPENHEIMER. 1975. A benthos and plankton study of the Corpus Christi, Capano, and Aransas Bay systems Ill. Report on data collected during the period July, 1974 I -May, 1975 and summary of the three-year project. Final report to Texas Water Development Board. 174 p. plus appendices. 
I HOLME, N.A. and AD. MCINTYRE. 1971. Methods for the study of marine benthos. Blackwell Scientific Publications, Oxford. 334 p. 
I KENNISH, M.J. 1986. Ecology of estuaries: Volume I: Physical and chemical aspects. CRC Press, Boca Raton, Florida. 254 p. 
I 
I KALKE, R. and P.A. MONTAGNA. 1991 . The effect of freshwater inflow on macrobenthos in the Lavaca River delta and upper Lavaca Bay, Texas. Contributions in Marine Science. 32:49-71. 
I 
KIRK, RE. 1982. Experimental design. 2nd Ed. Brooks/Cole Publ. Co., Monterey, California. 911 p. 
LONG, E.R. and LG. MORGAN. 1990. The potential for biological effects ofI sediment-sorbed contaminants tested in the National Status and Trends Program. NOAA Technical Memorandum NOS OMA 52. U.S. Dept. of Commerce, National Oceanographic and Atmospheric Administration, Seattle, I WA 215 p. 
MARGALEF, R. 1958. Information theory in ecology. General Systematics. 3:36-71.
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32 

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I MONTAGNA, P.A. and R.D. KALKE. 1992. The Effect of freshwater inflow on meiofaunal and macrofaunal populations in the Guadalupe and Nueces Estuaries, Texas. Estuaries. 15:266-285. 
ODUM, W.E. 1969. The strategy of ecosystem development. Science. 16:262-270 
I 
I OGLESBY, R.T. 1967. Biological and physiological basis of indicator organisms and communities: Section I -Biological basis, p. 267-269. In T.A. Olson and F.J. Burgess (eds.), Pollution and Marine Ecology. lnterscience Publishers, New 
York. 
I OSBORNE, T. and L. GRACE. 1981. Estuaries, p. 37-69. In C.H. Oppenheimer (ed.), Marine Ecosystems. University of Texas at Austin. 
I PIELOU, E.C. 1975. Ecological Diversity. Wiley, New York. 165 p. 
RHOADS, D.C., P.L. MCCALL, and J.Y. YINGST. 1978. Disturbance and production I on the estuarine seafloor. American Scientist. 66:577-586. 
SAS Institute, Incorporated. 1985. SAS/STAT Guide for Personal Computers. Version 
I §.. SAS Institute Inc., Cary, North Carolina. 378 p. 

SHANNON, C.E. and W. WEAVER. 1971. The Mathematical Theory of
I Communication. University of Illinois Press. Urbana, Illinois. 125 p. 

I 
SHIDELER, G.L. 1980. Reconnaissance observations of some factors influencing the .. 
'~ 
-'·'
turbidity structure of a restricted estuary: Corpus Christi Bay, Texas. Texas Journal of Science. 22:59-71. 
I SIMPSON, E.H. 1949. Measurement of diversity. Nature. 163:688. 
SOULE, D. F. 1988. Marine organisms as indicators: reality or wishful thinking? p.I 1-11. In Soule, D. F. and G. S. Kleppel (eds.), Marine Organisms as Indicators. Springer-Verlag, New York. 
I 
I WASS, M.L. 1967. Biological and physiological basis of indicator organisms and communities: Section II -Indicators of pollution. p. 267-269. In T.A. Olson and F..J. Burgess (eds.), Pollution and Marine Ecology. lnterscience Publishers, New 
York. 
I 
I 
I 


33 

I 
I 	Table 1. Vertical distribution of macrofauna taxa. Mean biomass (g-m-2) and abundance (n-m-2) of taxonomic categories. SD = Standard Deviation. 
I 
Section (in cm) 
0-3 	3-10 
I  Station T axa  n-m-2  g.m-2  n-m-2  g.m-2  
I  LOA  Crustacea  Mean 449  SD 372  Mean 0.024  SD 0.021  Mean 236  SD 398  Mean 0.016  SD 0.033  
I I I  Hemichordata Mollusca Rhynchocoela Other Ophiuroidea Polychaeta Sipunculida TOTAL  544 284 142 95 10,613 -------­12,127  573 270 226 140 4,794 6,375  0.169 0.229 0.024 0.008 3.049 -------­3.503  0.331 0.513 0.045 0.019 2.095 -------­3.024  24 544 236 165 12,078 24 -------­13,307  32 901 266 283 4,846 82 6,808  0.020 0.138 0.155 0.602 15.692 0.010 -------­16.633  0.070 0.271 0.326 1.476 9.694 0.033 ------­11 .903  
I  LQB  Crustacea Mollusca  473 473  425 677  0.027 0.149  0.022 0.348  142 165  284 352  0.012 0.022  0.028 0.043  
I I  Rhynchocoela Other Ophiuroidea Polychaeta Sipunculida  165 2,600 71 8,367 24  225 5,259 176 3,556 82  0.019 0.622 0.049 3.003 0.001  0.028 1.297 0.162 4.595 0.004  142 189 24 8,202 24  284 425 82 3,896 82  0.023 0.009 0.214 6.764 0.005  0.042 0.021 0.743 7.155 0.016  
-------­ -------­ -------­ -------­ --------­ -------­ 
I  TOTAL  12, 173 10,400  3.870  6.456  8,888  5,405  7.049  8.048  
I I I  LQC  Crustacea Hemichordata Mollusca Rhynchocoela Other Ophiuroidea Polychaeta Sipunculida  780 438 24 82 1,064 757 449 255 567 1,128 165 190 10,069 3,262 47 110 -------­ 0.064 0.005 0.572 0.482 0.054 0.190 2.613 0.072 -------­ 0.100 0.018 1.013 1.228 0.114 0.470 3.100 0.221 -------­ 118 615 355 71 24 6,547 ------­ 190 896 299 128 82 3,456  0.027 0.101 0.096 0.015 0.005 6.045 --------­ 0.074 0.165 0.085 0.032 0.018 4.822 -------­ 
I  TOTAL  13, 165  6,222  4.052  6.264  7,730  5,051  6.289  5.196  

I 
34 
LI 
I 

I Table 1. Vertical distribution of macrofauna, continued. 
I 
Section (in cm) 
0-3 3-10 
I 
I Station T axa n-m-2 g.m-2 n-m-2 g.m-2 Mean SD Mean SD Mean SD Mean SD 
NCC Crustacea 449 534 0.014 0.018 118 225 0.015 0.039 I Mollusca 449 534 0.664 1.070 24 82 0.035 0.120 Rhynchocoela 165 190 0.024 0.036 189 221 0.261 0.584 Other 47 164 0.002 0.007 24 82 0.002 0.007I Ophiuroidea 236 237 0.598 1.686 165 190 3.670 6.732 Polychaeta 12,45714,698 1.332 0.831 3,876 1,970 5.092 3.592 Sipunculida 95 185 0.067 0.164I ---------------------------------------------------­TOTAL 13,898 16,542 2.701 3.812 4,396 2,770 9.075 11.074 
I NCD Crustacea 520 754 0.030 0.039 95 221 0.004 0.011 
I 
Mollusca 780 486 0.071 0.118 24 82 0.001 0.004 Rhynchocoela 260 307 0.046 0.066 Other 71 128 0.243 0.719 
I 
Ophiuroidea 24 82 0.014 0.050 71 176 0.256 0.850 Polychaeta ·13,898 14,467 0.806 0.626 5,815 10,316 0.951 0.976 
Sipunculida 165 330 0.010 0.018 
I 
TOTAL 15,718 16,554 1.220 1.636 6,005 10,795 1.212 1.841 
I 
NCE Crustacea 1,702 2,739 0.092 0.156 544 534 0.073 0.088 Mollusca 638 470 0.249 0.427 142 191 0.022 0.039I Rhynchocoela 307 255 0.071 0.077 189 252 0.294 0.690 Other 331 433 0.058 0.098 165 190 0.048 0.066 Ophiuroidea 165 225 0.050 0.101 142 191 0.724 1.357 
Polychaeta 7,847 3,237 4.730 5.817 8,107 5,462 9.316 6.057 Sipunculida 71 176 0.013 0.041 
I 
TOTAL 11,061 7,535 5.263 6.717 9,289 6,820 10.477 8.297 
I 
I 

1•

L 
35 

I 
I Table 2: Bay-wide taxa dominance of macrofauna taxa. Mean biomass (g-m-2) to a depth of 10 cm. 
I 
I I I I I I I I I I I I I I I 
TAXA g.m-2 PERCENT 
Polychaeta Ophiuroidea Mollusca Rhynchocoela Other Crustacea Sipunculida Hemichordata 
TOTAL 
9.90 
0.96 
0.37 
0.28 
0.28 
0.07 
0.03 
0.00 
11.89 83.25 
8.10 
3.07 
2.38 
2.35 
0.56 
0.25 
0.04 
100.00 
36 

~ 

I 
I Table 3: Biomass dominance of taxa at stations to a depth of 10 cm. Based on mean 
2 
I 
g.m-. STA= Station; PCT= Percent of mean; C =Crustacea; H = Hemichordata; M = Mollusca; R = Rhynchocoela; 0 = Other; OP = 
Ophiuroidea; P = Polychaeta; S = Sipunculida. 
I 
STA TAXA g.m-2 PCT 
I I I I I I I I I I 
1·· 

I 
I 
I 

LQA 
LQB 
LQC 
c 
H 
M R 0 
OP 
p 
s 
c 
M R 0 
OP 
p 
s 
c 
H 
M R 0 
OP 
p 
s 
0.04 
0.02 
0.31 
0.38 
0.63 
0.01 
18.74 
0.01 
0.04 
0.17 
0.04 
0.63 
0.26 
9.77 
0.01 
0.09 
0.01 
0.67 
0.58 
0.07 
0.20 
8.66 
0.07 
37 

0.20 
0.10 
1.53 
1.90 
3.11 
0.04 
93.07 
0.05 
0.36 
1.57 
0.39 
5.78 
2.41 
89.44 
0.05 
0.88 
0.05 
6.51 
5.59 
0.66 
1.89 
83.73 
0.69 
~· 

I 

I Table 3: Biomass dominance of taxa, continued. 
I 
STA TAXA g.m-2 PCT
I 
I 
NCC c 0.03 0.25 

M 0.70 5.93 R 0.29 2.42
I 0 0.00 0.03 OP 4.27 36.24 
6.42 54.55 s 0.07 0.57
I p 
NCO c 0.03 1.41I M 0.07 2.96 R 0.05 1.89 0 0.24 10.00I OP 0.27 11.11 
p 
I 
1.76 72.23 s 0.01 0.40 
'•' 
I 
NCE c 0.17 1.05 M 0.27 1.72 R 0.37 2.32 
I 
0 0.11 0.67 OP 0.77 4.92 
p 
14.05 89.23 s 0.01 0.08 
I I I I I I 
38 
~· 
I 
I Table 4: Bay-wide taxa dominance. Mean n.m·2 to a depth of 10 cm. 
I 
TAXA n.m·2 PERCENT 
I Polychaeta 17979.62 84.44 Crustacea 937.59 4.40 I Mollusca 910.01 4.27 Other 728.80 3.42 Rhynchocoela 456.98 2.15 I Ophiuroidea 196.97 0.93 Sipunculida 74.85 0.35 Hemichordata 7.88 0.04
I TOTAL 21292.70 100.00 
I 
I I I I I I I I I I I 
39 
I 
I Table 5: Abundance dominance of taxa at stations based on mean n.m· 2 to a depth of 
10 cm. STA= Station; PCT= Percent of mean; C =Crustacea; H = 
Hemichordata; M = Mollusca; R = Rhynchocoelaa; 0 = Other; OP = 

I · STA TAXA n-m·2 PCT 
I 
LQA c 685.46 2.70 

I 
H 23.64 0.09 M 1087.29 4.28 R 520.01 2.04 
I 
0 307.28 1.21 
OP 94.55 0.37 
p 22691.20 89.22 

s 23.64 0.09 
I LQB c 614.55 2.92 M 638.19 3.03 R 307.28 1.46 0 2789.13 13.24
I 
OP 94.55 0.45 ·~· p <~·
16569.30 78.68 
:~~;,.
I s 47.27 0.22 ~)-':\ 
i}i 
I ~:­
LQC c 898.19 4.30 H 23.64 0.11 'i·,. M 1678.20 8.03 R 803.65 3.85I 0 638.19 3.05 OP 189.09 0.90 p 16616.58 79.52I s 47.27 0.23 
I I I I 
I 
40 
I 

I Table 5: Abundance dominance of taxa at stations, continued. 
I STA TAXA n.m·2 PCT 
I 
I 
NCC c 567.28 3.10 M 472.73 2.58 
R 354.55 1.94 
0 70.91 0.39 I OP 401.82 2.20 
p 
16332.94 89.28 s 94.55 0.52
I 
NCO c 614.55 2.83 M 803.65 3.70 I R 260.00 1.20 0 70.91 0.33 OP 94.55 0.44I p 
19712.98 90.75 
s 165.46 0.76 
I NCE c 2245.48 11.03 
I 
M 780.01 3.83 R 496.37 2.44 
0 496.37 2.44 OP 307.28 1.51 p 
15954.75 78.40I s 70.91 0.35 
I I I I I I 
41 
ll 

I 

I 
I Table 6: Average diversity indices in La Quinta Channel and Corpus Christi Bay. STA = station; R1 =species richness; NO =total number of species; N1 =total number of abundant species; E1 =species evenness. Mean of 3 replicates. 
I DATE STA R1 NO N1 E1 
I 
I 090CT92 ···· -LQA 3.47574 15.6667 8.9591 0.79920 090CT92 LQB 2.72445 11.3333 6.9239 0.79640 090CT92 LQC 4.60928 21 .0000 7.7833 0.67865 
090CT92 NCC 2.50653 13.6667 4.0431 0.53229 090CT92 NCO 1.32389 8.0000 1.8895 0.30790 I 090CT92 NCE 4.31342 18.6667 10.4603 0.80902 15JAN93 LOA 5.35674 25.6667 14.2853 0.81348 15JAN93 LOB 4.58231 22.3333 11.5281 0.75997I 15JAN93 LQC 5.93192 27.0000 16.9306 0.85615 15JAN93 NCC 3.46781 14.3333 7.9525 0.78258 15JAN93 NCO 2.95579 10.0000 8.4955 0.92923I 15JAN93 NCE 6.12999 25.3333 18.6676 0.90916 09APR93 LQA 5.34192 25.3333 14.3291 0.82135 09APR93 LQB 3.86165 18.0000 11.2629 0.83710I 09APR93 LQC 6.43306 29.6667 20.9114 0.89276 09APR93 NCC 3.52698 13.3333 10.8908 0.92244 
I 
09APR93 NCD 2.61831 12.0000 2.7703 0.39444 
09APR93 NCE 5.25370 23.3333 15.6772 0.87424 
I 
I 
10JUL93 LQA 4.56691 21.3333 13.8824 0.85319 10JUL93 LQB 3.36056 15.0000 10.0510 0.83792 10JUL93 LQC 4.66032 19.0000 12.2708 0.84713 10JUL93 NCC 3.30712 11.0000 9.7165 0.94438 10JUL93 NCD 2.17279 7.3333 4.7813 0.79203 
10JUL93 NCE 4.53208 21.6667 12.8690 0.82704 
I I I I I 
42 
I 

I Table 7: La Quinta Channel species list. Average density (n·m-2) over entire year. Totals may vary slightly from totals of other tables due to roundoff errors. 
I 
Taxa Stations 
I 
LQA LQB LQC 
I Cnidaria 
Anthozoa Anthozoa (unidentified) 118 189 95I Platyhelminthes Turbellaria Turbellaria (unidentified) 71 71 47I Rynchocoela 
Rhynchocoel (unidentified) 520 307 804 PhoronidaI Phoronis architecta 95 47 402 
I 
Mollusca Mollusca (unidentified) 0 24 118 Gastropoda 
Vitrinellidae 
I 
Vitrine/la floridana 47 0 24 
I 
Caecidae Caecum johnsoni 118 71 118 Truncatellidae 
I 
Truncate/la caribaeensis 0 24 0 Pyramidellidae Pyrgiscus sp. 0 24 0 
I 
Acteonidae Rictaxis punctostriatus 24 0 47 Retusidae 
I 
Acteocina canalicu/ata 0 24 0 Crepidulidae Crepidula fomicata 0 24 24 
Scaphopoda Dentaliidae I Dentalium texasianum 47 0 0 Pelecypoda NuculanidaeI Nuculana acuta 118 47 71 
Arcidae Anadara transversa 0 0 47I Lucinidae 
Lucina multilineata 24 47 142 Lucina pectinata 24 0 0
I 
43 
I 
I 

I Table 7: La Quinta Channel species list, continued. 
I Taxa Stations
i 
LQA LQB LQC
I I I 
I 
LeptonidaeI Mysella planulata 47 0 24 
Tellinidae Macoma tenta 24 0 24I Macoma brevifrons 0 0 0 
Tellina sp 24 0 95 Tellina texana 71 142 284I Tel/idora cristata 0 0 24 Semelidae Abra aequa/is 47 0 0I Veneridae 
I 
Mercenaria campechiensis 0 0 0 Chione cancel/ata 0 0 24 Lyonsiidae 
Lyonsia hyalina f/oridana 47 0 0 '(•! 
~... 
I 
Sportellidae o'.'i. 

..
.. .{.
Aligena texasiana 165 165 449 
I 
, Mactridae Mulinia lateralis 24 47 118 
I 
Periplomatidae Periploma cf. orbiculare 213 0 24 Periploma margaritaceum 24 0 24 
Annelida 
Polychaeta 

I 
Polynoidae 
Eunoe cf. nodulosa 0 0 47 Sigalionidae Sthenelais boa 0 0 0
I .. 
_,
Palmyridae (= Chrysopetalidae) Paleanotus heteroseta 1,064 71 473 I Phyllodocidae Eteone heteropoda 0 0 95 Eteone /actea 0 0 0I Eumida sanguinea 71 165 95 Paranaitis speciosa 0 0 0 Anaitides erythrophyllus 0 0 71
I 
44 
I 
I 

I Table 7: La Quinta Channel species list, continued. 
I 
I Taxa Stations LOA LOB LQC 
I 
I 
Pilargiidae Sigambra bassi 0 0 24 
Litocorsa stremma 0 0 24 Pilargiidae (unidentified) 0 0 24 I Hesionidae Gyptis vittata 425 165 355 Podarke obscura 24 47 0I Hesionidae (unidentified) 0 0 24 Syllidae Syllis sp. 0 0 24I Sphaerosyl/is cf. sublaevis 165 165 402 Sphaerosyl/is sp. A 591 331 473 Synsyl/is longigularis 0 1,229 355I Opisthosyl/is sp. 0 0 142 Syllidae (unidentified) 0 118 0 
I Nereidae 
I 
Nereis sp. A 0 0 47 Ceratonereis irritabilis 0 0 0 
I 
Laeonereis culveri 71 0 47 Nereidae (unidentified) 24 0 24 Nephtyidae 
I 
Nephtys magellanica 0 0 24 Glyceridae G/ycera americana 520 236 307 
I 
Goniadidae Glycinde solitaria 165 95 47 G/ycinde nordmanni 0 0 0 
Onuphidae Diopatra cuprea 24 47 118 I Onuphis eremita 0 0 71 Lumbrineridae Lumbrineris parvapedata 544 24 47I Arabellidae Drilonereis magna 95 0 0 
I 
45 
I 
I 
I Taxa Stations LQA LQB LQC 
I 
I 
Dorvilleidae Schistomeringos rudolphi 142 71 47 
Schistomeringos sp. A 1,205 662 142 Dorvil/ea rubra 0 0 236 I Spionidae Polydora ligni 24 0 0 Minuspio cirrifera 284 142 544I Paraprionospio pinnata 165 24 118 Apoprionospio pygmaea 0 0 0 Scolelepis texana 47 24 0 Spiophanes bombyx 118 236 378
I 0
Polydora socialis 24 0 Streblospio benedicti 638 284 24I Polydora caulleryi 24 260 0 
I 
Spio setosa 24 118 0 Magelonidae Magelona pettiboneae 0 24 118 
I 
Magelona phyl/isae 0 0 71 Chaetopteridae 
I 
Spiochaetopterus costarum 47 24 142 Cirratulidae Tharyx setigera 3,782 402 425 
I 
Cirratulidae (unidentified) 24 0 0 Cossuridae Cossura delta 47 0 0 
I 
Orbiniidae Haploscoloplos fo/iosus 0 47 71 Naineris sp. A 0 0 24 
I 
Paraonidae Paraonidae Grp. A 1,678 2,576 1,418 Paraonidae Grp. 8 2,127 2,505 1,678 
Opheliidae Armandia agilis 24 0 24 I Armandia macu/ata 95 71 95 
I 

46 
I 

I Table 7: La Quinta Channel species list, continued. 
I Taxa Stations 
LQA LQB LQC 
I 
I 
Capitellidae Capitella capitata 0 24 24 
Notomastus latericeus 95 0 0 Mediomastus ambiseta 4,633 3,664 5,366I Maldanidae Branchioasychis americana 118 0 0 Clymenella torquata 993 473 402I Asychis e/ongata 47 0 24 Euclymene sp. B 0 0 0 
Axiothella mucosa 709 189 615
I Maldanidae (unidentified) 95 0 142 
Oweniidae Owenia fusiformis 24 0 .47I Pectinariidae Pectinaria gou/dii 0 24 0 Ampharetidae 
I 
I lsolda pulchella 24 0 165 ~ Melinna macu/ata 0 0 47 ', Ampharetidae (unidentified) 0 24 0 
I 
T erebellidae Terebel/ides stroemi 0 0 24 Sabellidae 
Megalomma bioculatum 0 0 24 
I 
Polychaete juv. (unidentified) 0 0 0 
I 
Oligochaeta Oligochaetes (unidentified) 1,655 2,033 827 Sipuncula 
I 
Phasco/ion strombi 24 47 47 Crustacea Ostracoda 
Myodocopa Sarsiella texana 0 142 213
I 
I 

47 
I 
LQA LQB LQC 
I Copepoda Cyclopoida CyclopidaeI Hemicyclops sp. 0 0 0 Malacostraca I Reptantia Porcellanidae Euceramus praelongus 0 0 24I Pinnotheridae Pinnixa sp. 0 0 0 Brachyuran Larvae I Brachyuran zoea 0 0 0 Mysidacea Mysidopsis bahia 24 0 0I Mysidopsis sp. 0 0 0 
I 
Cumacea Cyclaspis varians 24 0 24 Leucon sp. 0 0 0 
I 
Oxyurostylis sa/inoi 0 95 95 Amphipoda Ampeliscidae 
I 
Ampelisca abdita 71 0 24 Ampelisca verrilli 71 47 307 
I 
Oedicerotidae Monoculodes sp. 0 0 0 Corophiidae 
I 
Erichthonias brasiliensis 0 24 24 Cerapus tubularis 0 0 0 Microprotopus spp. 0 47 24 
I 
Lembos sp. 0 24 0 Liljeborgiidae Listriella barnardi 0 0 0 
Listriel/a clymenel/ae 496 213 118 CaprellidaeI Caprellid 0 0 0 
I 

48 
I 

I Table 7: La Quinta Channel species list, continued. 
I Taxa Stations I LQA LQB LQC 
I 
Amphilochidae 
Amphilochus sp. 0 0 0 
I Amphithoidae 
Cymadusa compta 0 0 0 MelitidaeI Elasmopus sp. 0 0 0 lsopoda MunnidaeI Munna hayesi 0 0 24 ldoteidae Edotea montosa 0 0 24I Echinodermata 
I 
Ophiuroidea Ophiuroidea (unidentified) 95 95 189 Chordata 
I 
Urochordata 
Ascidiaceae 

Molgula manhattensis 0 2,482 0 
I 
Ascidiacea (unidentified) 0 0 95 Hemichordata 
Branchiostoma caribaeum 24 0 0 Schizocardium sp. 24 0 24 
I TOTAL 25,440 21,063 20,907 
I I I I I 
49 
I 
I Table 8: Corpus Christi Bay species list. Average density (n·m-2) over entire year. Totals may vary slightly from totals of other tables due to roundoff errors. 
I 
Taxa Stations 
I NCC NCO NCE 
I Cnidaria 
Anthozoa Anthozoa (unidentified) 24 71 189 I Platyhelminthes Turbellaria Turbellaria (unidentified) 24 0 24I Rynchocoela 
Rhynchocoel (unidentified) 355 260 496 PhoronidaI Phoronis architecta 24 0 165 
I 
Mollusca Mollusca (unidentified) 0 24 47 Gastropoda 
I 
Vitrinellidae Vitrine/la floridana 0 0 24 Caecidae 
I 
Caecum johnsoni 0 0 24 Truncatellidae 
I 
Truncate/la caribaeensis 0 0 0 Pyramidellidae Pyrgiscus sp. 0 0 0 
I 
Acteonidae Rictaxis punctostriatus 0 284 118 Retusidae 
I 
Acteocina canaliculata 0 95 0 Crepidulidae Crepidula fomicata 0 0 0 
Scaphopoda Dentaliidae I Dentalium texasianum 0 0 0 Pelecypoda NuculanidaeI Nuculana acuta 71 0 71 
Arcidae Anadara transversa 0 0 24I Lucinidae 
Lucina multilineata 0 0 0 Lucina pectinata 0 0 0
I 
50 
I I 
I Table 8: Corpus Christi Bay species list, continued. 
I Taxa Stations I NCC NCO NCE 
I 
LeptonidaeI Mysella planulata 0 0 0 
Tellinidae Macoma tenta 0 0 47I Macoma brevifrons 0 24 0 
Tellina sp 0 0 0 Tellina texana 0 0 0I T ellidora cristata 0 0 0 Semelidae Abra aequalis 24 0 0I Veneridae 
I 
Mercenaria campechiensis 0 24 0 Chione cancellata 0 0 0 Lyonsiidae 
I 
Lyonsia hyalina floridana 24 0 0 Sportellidae ;.;. 
I 
A/igena texasiana 0 47 189 Mactridae Mulinia lateralis 331 213 142 I 
Periplomatidae Periploma cf. orbiculare 24 95 71 Periploma margaritaceum 0 0 0 
I 
Annelida 
Polychaeta 
Polynoidae 

Eunoe cf. nodulosa 0 0 0 SigalionidaeI Sthenelais boa 0 0 24 Palmyridae (= Chrysopetalidae) Paleanotus heteroseta 165 0 685I Phyllodocidae Eteone heteropoda 24 0 71 Eteone lactea 0 24 47I Eumida sanguinea 0 0 0 Paranaitis speciosa 0 24 0 Anaitides erythrophyllus 0 0 24
I 
51 
Table 8: Corpus Christi Bay species list, continued. 
Taxa Stations 
NCC NCO NCE 
I 
I 

Pilargiidae 
Sigambra bassi 0 0 0 I Litocorsa stremma 0 0 0 Pilargiidae (unidentified) 0 0 0 HesionidaeI Gyptis vittata 284 118 827 Podarke obscura 0 24 24 Hesionidae (unidentified) 0 0 0I Syllidae Syllis sp. 0 0 0 Sphaerosyl/is cf. sublaevis 0 24 24I Sphaerosyllis sp. A 307 142 733 
I 
Synsyllis longigularis 47 71 0 Opisthosyllis sp. 0 0 0I Syllidae (unidentified) 0 0 0 I Nereidae Nereis sp. A 0 0 0 
I 
Ceratonereis irritabilis 0 0 118 Laeonereis culveri 0 0 95 Nereidae (unidentified) 0 0 0 
Nephtyidae 
Nephtys magellanica 0 0 24 
I 
Glyceridae 
G/ycera americana 0 24 118 
Goniadidae 
I 
Glycinde solitaria 236 236 189 
Glycinde nordmanni 32 0 410 
Onuphidae
I 
Diopatra cuprea 47 47 95 
Onuphis eremita 0 0 47 
Lumbrineridae
I Lumbrineris parvapedata 638 0 331 Arabellidae Drilonereis magna 0 0 0
I 
52 
Table 8: Corpus Christi Bay species list, continued. 
I 

I Dorvilleidae 
I I I I I I I I I I I I I 
Schistomeringos rudolphi Schistomeringos sp. A Dorvil/ea rubra 
Spionidae 
Polydora ligni Minuspio cirrifera Paraprionospio pinnata Apoprionospio pygmaea Sco/e/epis texana Spiophanes bombyx Po/ydora socialis Streb/ospio benedicti Po/ydora caulleryi Spio setosa 
Magelonidae 
Magelona pettiboneae Magelona phyl/isae 
Chaetopteridae 
Spiochaetopterus costarum 
Cirratulidae 
Tharyx setigera 
Cirratulidae (unidentified) Cossuridae 
Cossura delta 
Orbiniidae 
Haploscoloplos foliosus Naineris sp. A 
Paraonidae Paraonidae Grp. A Paraonidae Grp. B 
Opheliidae 
Armandia agilis Armandia maculata 
53 

47 0 0 
0 
0 425 0 0 0 0 5,082 71 0 
24 24 
95 
1,276 0 
804 
24 0 
71 
24 
0 47 0 0 0 
0 24 331 213 0 0 24 11,629 24 0 
0 0 
47 
24 0 
0 
95 0 
71 0 
0 24 
425 71 24 
0 0 213 24 0 47 0 236 1,016 0 
24 47 
118 
1,489 0 
95 
236 0 
402 
851 
0 
0 
~ 
-~-­
,,';.>­
~­
·~. 
I 

I Table 8: Corpus Christi Bay species list, continued. 
I 
Taxa Stations 
I NCC NCO NCE 
I 

Capitellidae Capitella capitata 0 0 0 Notomastus latericeus 0 0 24 Mediomastus ambiseta 6,264 2,269 3,711
I Maldanidae I I 
Branchioasychis americana 71 0 47
I 
I 
Clymenella torquata 24 0 355 Asychis elongata 24 0 47 
I 
Euclymene sp. B 0 0 898 Axiothella mucosa 0 0 0 Maldanidae (unidentified) 47 0 24 
I 
Oweniidae Owenia fusiformis 0 24 24 
I 
Pectinariidae Pectinaria gou/dii 0 0 0 Ampharetidae ., 
I 
/so/da pu/chel/a 0 0 24 Melinna maculata 0 0 24 Ampharetidae (unidentified) 0 0 0 
I 
T erebellidae Terebellides stroemi 0 0 0 Sabellidae 
Megalomma bioculatum 0 0 0 
I Polychaete juv. (unidentified) 0 47 0 Oligochaeta Oligochaetes (unidentified) 118 4,136 1,985I Sipuncula Phasco/ion strombi 95 165 71 CrustaceaI Ostracoda 
Myodocopa Sarsiella texana 0 47 47
I 
I 

54 
I Taxa Stations I NCC NCO NCE 
I Copepoda 
Cyclopoida
I Cyclopidae 

Hemicyclops sp. 0 0 24 MalacostracaI Reptantia Porcellanidae Euceramus praelongus 0 0 0
I Pinnotheridae 
Pinnixa sp. 47 0 71 Brachyuran Larvae I Brachyuran zoea 0 0 24 Mysidacea 
I 
Mysidopsis bahia 0 0 0 Mysidopsis sp. 71 0 0 
I 
Cumacea Cyc/aspis varians 165 47 0 
I 
Leucon sp. 0 0 24 Oxyurostylis salinoi 24 236 0 Amphipoda 
Ampeliscidae 
I 
I 
Ampelisca abdita 0 0 0 Ampelisca verrilli 24 47 24 Oedicerotidae Monocu/odes sp. 24 0 0 Corophiidae 
I 
Erichthonias brasiliensis 0 0 662 Cerapus tubularis 0 0 24 Microprotopus spp. 0 0 71 
Lembos sp. 0 0 0 LiljeborgiidaeI Listriella bamardi 142 95 71 Listriella clymenellae 0 0 685 CaprellidaeI Caprellid 47 142 449 
I 

55 
I 

I Table 8: Corpus Christi Bay species list, continued. 
I 
I Taxa Stations NCC NCO NCE 
I Amphilochidae 
Amphilochus sp. 0 0 24 
I 
Amphithoidae 
Cymadusa compta 0 0 24 Melitidae I Elasmopus sp. 0 0 24 lsopoda MunnidaeI Munna hayesi 0 0 0 ldoteidae Edotea montosa 24 0 0I Echinodermata Ophiuroidea Ophiuroidea (unidentified) 402 95 307I Chordata 
I 
Urochordata Ascidiaceae Mo/gula manhattensis 0 0 47 
I 
Ascidiacea (unidentified) 0 0 71 Hemichordata 
Branchiostoma caribaeum 0 0 0 Schizocardium sp. 0 0 0 
I TOTAL 18,300 21,727 20,356 
I I I I I 
56 
I I I I 
I 
II 

11 

I I I I I I I I I I I 
Table 9. Concentrations of trace metals in the sediment that were measured for in the La Quinta Channel. Stations 1 B, 2B, and 3B are identical to stations LQA, LQB, and LQC. This data is summarized from a report to the Coastal Bend Bays Foundation (AnalySys, Inc., 1993). 
Parameter Station 1B Station 2B Station 3B Units 
Antimony  <60.00  <60.00  <60.00  µg/Kg  
Arsenic  1,300.00  1,200.00  690.00  µg/Kg  
Beryllium  0.21  0.14  <0.10  mg/Kg  
Cadmium  0.33  0.29  <0.20  mg/Kg  
Chromium  6.70  2.20  4.00  mg/Kg  
Copper  4.00  4.00  1.50  mg/Kg  
Lead  10.00  8.80  3.20  mg/Kg  
Mercury  22.00  26.00  18.00  µg/Kg  
Nickel  5.40  2.80  2.40  mg/Kg  
Selenium  67.00  <40.00  <40.00  µg/Kg  
Silver  <4.00  <4.00  <4.00  µg/Kg  
Thallium  <20.00  <20.00  <20.00  µg/Kg  
Zinc  22.00  14.00  12.00  mg/Kg  
Cyanide  <0.02  <0.02  <0.02  mg/Kg  

57 

I 

I Appendix I: Hydrographic measurements of La Quinta Channel. 
I 
Abbreviations: STA=Station, SAL(R)=Salinity by refractometer, SAL(M)=Salinity by 

meter, COND=Conductivity, TEMP=Temperature, DO=Dissolved oxygen, and 
ORP=Oxidation redox potential. 
I 
Date STA Depth SAL(R) SAL(M) COND TEMP pH DO ORP 
I 
(m) (ppt) (ppt) (uS/cm) (oC) (mg/I) (mV) 
090CT92 LQA 0.00 35 30.5 47.0 24.91 8.15 7.16 0.329 
I 090CT92 LQA 2.80 35 30.7 47.0 24.87 8.25 6.88 0.325 
090CT92 LQB 0.00 38 30.2 46.5 24.35 8.45 7.71 0.288 
090CT92 LQB 2.10 38 30.5 47.0 24.14 8.51 7.25 0.288
I 090CT92 LQC 0.00 36 29.2 45.3 24.25 8.50 6.94 0.275 
090CT92 LQC 2.80 36 30.4 46.5 23.86 8.52 6.46 0.277 
15JAN93 LQA 0.00 30 30.1 46.2 13.37 8.12 9.28 0.187
I 15JAN93 LQA 2.50 30 30.2 46.3 13.37 8.12 8.66 0.211 
15JAN93 LQB 0.00 30 30.2 46.3 13.12 8.18 9.34 0.187 
15JAN93 LQB 2.20 30 30.2 46.3 13.08 8.18 8.54 0.241
I 15JAN93 LQC 0.00 28 27.7 43.0 13.17 8.19 9.80 0.207 

I .~··
15JAN93 LQC 2.60 28 28.8 44.5 13.23 8.20 9.55 0.219 09APR93 LQA 0.00 28 27.0 40.9 21.38 8.02 8.80 0.208 
''·
0.209 lj.j
09APR93 LQA 2.40 28 27.2 41.7 21.22 8.02 8.50 !( 
.)t~· 
09APR93 LQB 0.00 28 27.2 41.0 21.44 8.04 8.91 0.216 *.<· 
I -.'~ 09APR93 LQB 1.80 28 27.5 41.4 21.40 8.04 8.80 0.216 4l' 
=-·~ 
iff 
I 
09APR93 LQC 0.00 28 27.1 41.2 21.45 7.99 8.27 0.219 ~~ 09APR93 LQC 2.60 28 27.2 41.3 21.48 7.99 8.09 0.221 10JUL93 LQA 0.00 24 21.7 34.7 29.82 8.07 6.24 0.203 
I 
I 
10JUL93 LQA 2.40 24 21.8 34.8 29.82 8.06 6.03 0.207 10JUL93 LQB 0.00 26 24.1 38.0 30.17 8.04 6.49 0.208 10JUL93 LQB 1.70 26 24.2 38.2 30.12 8.03 6.36 0.210 10JUL93 LQC 0.00 27 25.6 40.2 29.87 8.01 6.62 0.211 10JUL93 LQC 2.60 27 25.9 40.5 29.87 8.01 6.55 0.213 090CT92 NCC 0.00 37 30.5 46.9 23.50 7.96 6.33 0.419 
090CT92 NCC 4.00 37 30.7 46.8 23.49 8.02 5.50 0.391 090CT92 NCO 0.00 35 30.7 47.8 22.35 8.31 6.37 0.402 I ·o90CT92 NCO 3.50 35 31.2 47.8 22.35 8.22 6.25 0.390 090CT92 NCE 0.00 29 27.1 42.3 22.42 8.45 6.73 0.394 090CT92 NCE 3.20 29 31.1 47.6 23.97 8.26 5.81 0.389I 15JAN93 NCE 0.00 27 27.6 43.0 12.71 8.03 8.89 0.239 15JAN93 NCE 3.20 27 27.7 43.1 12.68 8.29 8.43 0.246 15JAN93 NCO 0.00 28 28.9 43.2 12.43 8.02 8.57 0.211I 15JAN93 NCO 3.20 28 29.0 44.9 12.59 8.05 8.34 0.228 15JAN93 NCC 0.00 30 30.0 46.1 12.31 8.02 8.21 0.227 15JAN93 NCC 3.70 30 30.1 46.3 12.34 8.04 8.06 0.238
I 
58 
I Date STA Depth SAL(R) SAL(M) COND TEMP pH DO 
I 09APR93 NCC 0.00 27 26.6 42.1 20.69 7.93 8.40 
09APR93 NCC 3.90 27 26.7 42.2 20.51 7.89 8.01 
I 
09APR93 NCO 0.00 26 26.3 42.0 20.36 8.01 8.16 09APR93 NCO 2.40 26 26.3 42.0 20.39 8.01 8.03 
09APR93 NCE 0.00 25 26.0 41.0 20.03 7.95 8.74 
I 
09APR93 NCE 3.00 25 26.1 41.2 20.08 7.94 8.10 
I 
10JUL93 NCE 0.00 24 24.3 38.3 29.25 7.92 5.75 10JUL93 NCE 2.60 24 24.3 38.4 29.20 7.93 5.44 10JUL93 NCO 0.00 26 24.4 38.6 29.36 7.87 5.22 10JUL93 NCO 3.10 26 25.0 39.4 29.35 7.64 1.73 10JUL93 NCC 0.00 23 21.5 34.3 29.10 7.98 6.31 I 10JUL93 NCC 3.70 23 23.3 36.8 28.90 7.89 5.44 
I I I I I I I I I I 
59 
ORP 
0.203 
0.205 
0.212 
0.212 
0.231 
0.232 
0.151 
0.159 
0.156 
0.169 
0.167 
0.178 
Appendix II: Sediment grain analysis of La Quinta Channel. 
Date STA DEPTH RUBBLE SAND SILT CLAY
I (cm) (%) (%) (%) (%) 
I 
160CT91 NCO 3 0.6 82.0 0.2 17.3 
I 
160CT91 NCO 10 0.7 82.8 4.3 12.2 090CT92 LOA 3 0.8 84.6 6.0 8.7 090CT92 LOA 10 1.7 68.4 9.5 20.4 
I 
090CT92 LOB 3 2.4 94.8 0.8 2.1 090CT92 LOB 10 9.5 87.8 0.8 2.0 090CT92 LQC 3 2.3 93.2 1.4 3.1 
090CT92 LQC 10 3.0 85.3 3.2 8.5 090CT92 NCC 3 6.2 14.0 31.6 48.1 I 090CT92 NCC 10 3.7 7.1 28.3 60.9 090CT92 NCE 3 2.0 57.5 12.2 28.3 090CT92 NCE 10 1.3 55.7 11.8 31.2
I I I I I I I I I I 
60 
I 
I 	Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. 
Listed according to date, station (STA), replicate number (REP), and section (SEC). 
I 	Total number (n) per core of each species found in each section. Surface sediment is 0-3 cm (labelled as 3) and bottom sediment is 3-10 cm (labelled as 10). Core size is 
I 
6.715 cm in diameter. 

I 
Date STA REP SEC Species 	n 
I 
I 
090CT92 LOA 1 3 Rhynchocoel (unidentified) 2 090CT92 LQA 1 3 Oligochaetes (unidentified) 7 090CT92 LQA 1 3 G/ycinde solitaria 1 090CT92 LQA 1 3 Streblospio benedicti 9 090CT92 LQA 1 3 Paraprionospio pinnata 2 090CT92 LOA 1 3 Minuspio cirrifera 1 090CT92 LQA 1 3 Tharyx setigera 4 I 090CT92 LOA 1 3 Schistomeringos sp. A 2 090CT92 LQA 1 3 Cirratulidae 1 090CT92 LQA 1 3 Paraonidae Grp. A 3I 090CT92 LOA 1 3 Ophiuroidea (unidentified) 1 ,.. 090CT92 LQA 1 3 Mysidopsis bahia 1 
.~
090CT92 LQA 1 3 Mediomastus ambiseta 17 
~­
I 	~ 
t" 
51 	:.:.~
,, 
~-­
I 	090CT92 LQA 1 10 Rhynchocoel (unidentified) 1 i\ 090CT92 LOA 1 10 Oligochaetes (unidentified) 6 090CT92 LQA 1 10 Pa/eanotus heteroseta 2 
I 
I 090CT92 LQA 1 10 Gyptis vittata 1 090CT92 LOA 1 10 Tharyx setigera 16 090CT92 LQA 1 10 Clymenella torquata 1 
I 
090CT92 LQA 1 10 Listriella clymenellae 1 090CT92 LQA 1 10 Schistomeringos sp. A 1 090CT92 LQA 1 10 Paraonidae Grp. B 25 
090CT92 LQA 1 10 Mediomastus ambiseta 7 
I 
61 
I 
I 
I 

61 
I 
I Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species n 
I 
I 
090CT92 LQA 2 3 G/ycinde so/itaria 1 090CT92 LQA 2 3 Drilonereis magna 1 090CT92 LQA 2 3 Streblospio benedicti 11 090CT92 LQA 2 3 Paraprionospio pinnata 1 
I 
090CT92 LQA 2 3 Scolelepis texana 1 090CT92 LOA 2 3 Tharyx setigera 5 090CT92 LQA 2 3 Maldanidae (unidentified) 3I 090CT92 LQA 2 3 Paraonidae Grp. A 4 090CT92 LQA 2 3 Ophiuroidea (unidentified) 1 090CT92 LQA 2 3 Mediomastus ambiseta 15 
43 
I I 
I 
090CT92 LQA 2 10 Oligochaetes (unidentified) 1 090CT92 LQA 2 10 Drilonereis magna 1 090CT92 LOA 2 10 Tharyx setigera 7 090CT92 LQA 2 10 Cossura delta 1 090CT92 LQA 2 10 Axiothel/a mucosa 1 I 090CT92 LQA 2 10 Maldanidae (unidentified) 1 090CT92 LQA 2 10 Schizocardium sp. 1 090CT92 LQA 2 10 Paraonidae Grp. B 1I 090CT92 LQA 2 10 Mediomastus ambiseta 1 
I 15 
I 
090CT92 LQA 3 3 Rhynchocoel (unidentified) 1 090CT92 LQA 3 3 Oligochaetes (unidentified) 1I 090CT92 LOA 3 3 Polydora ligni 1 090CT92 LOA 3 3 Streblospio benedicti 5 090CT92 LQA 3 3 Scolelepis texana 1 090CT92 LQA 3 3 Minuspio cirrifera 1 090CT92 LQA 3 3 Tharyx setigera 4 090CT92 LQA 3 3 Ampelisca abdita 2I 090CT92 LQA 3 3 Phoronis architecta _ 1 090CT92 LQA 3 3 Schistomeringos sp. A 1 090CT92 LQA 3 3 Paraonidae Grp. A 1I 090CT92 LQA 3 3 Mediomastus ambiseta 5 
I 
24 
I 

62 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
090CT92 LQA 3 10 Rhynchocoel (unidentified) 1 090CT92 LQA 3 10 Oligochaetes (unidentified) 3 090CT92 LQA 3 10 Drilonereis magna 2 090CT92 LQA 3 10 Tharyx setigera 6 
I 
090CT92 LQA 3 10 Phasco/ion strombi 1 090CT92 LQA 3 10 Paraonidae Grp. A 5 090CT92 LQA 3 10 Mediomastus ambiseta 5 
23 
I 
090CT92 LQB 1 3 Rhynchocoel (unidentified) 1 090CT92 LQB 1 3 Oligochaetes (unidentified) 7 090CT92 LQB 1 3 Streblospio benedicti 2I 
090CT92 LQB 1 3 Sco/elepis texana 1 090CT92 LQB 1 3 Minuspio cirrifera 2 I 090CT92 LQB 1 3 Syllidae (unidentified) 1 090CT92 LQB 1 3 Paraonidae Grp. A 1 090CT92 LQB 1 3 Sarsiella texana 1I 090CT92 LQB 1 3 Mediomastus ambiseta 12 
I 28 
I 
I 
090CT92 LQB 1 10 Rhynchocoel (unidentified) 2 090CT92 LQB 1 10 Spiophanes bombyx 1I 090CT92 LQB 1 10 Minuspio cirrifera 1 090CT92 LQB 1 10 Tharyx setigera 1 090CT92 LQB 1 10 Aligena texasiana 1 090CT92 LQB 1 10 Syllidae (unidentified) 1 090CT92 LQB 1 10 Paraonidae Grp. A 6 090CT92 LQB 1 10 Paraonidae Grp. B 18 
090CT92 LQB 1 10 Mediomastus ambiseta 2 
I 
33 
I 
I 
I 

63 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
090CT92 LQB 2 3 Oligochaetes (unidentified) 1
I 	090CT92 LQB 2 3 Streblospio benedicti 4 090CT92 LQB 2 3 Paraonidae Grp. A 2 090CT92 LQB 2 3 Ampharetidae 1
I 
090CT92 LQB 2 3 Microprotopus spp. 1 090CT92 LQB 2 3 Mediomastus ambiseta 10 
I 	19 
I 
090CT92 LQB 2 10 Oligochaetes (unidentified) 1 
090CT92 LQB 2 10 Spio setosa 1 090CT92 LQB 2 10 Spiochaetopterus costarum 1 090CT92 LQB 2 10 Paraonidae Grp. A 8
I 	1
090CT92 LQB 2 10 Paraonidae Grp. 8 
I 12 090CT92 LQB 3 3 Schistomeringos rudolphi 1
I 	090CT92 LQB 3 3 Spio setosa 2 090CT92 LQB 3 3 Streb/ospio benedicti 5 090CT92 LQB 3 3 Minuspio cirrifera 1
I 	090CT92 LQB 3 3 Capitel/a capitata 1 090CT92 LQB 3 3 Mulinia /ateralis 1 090CT92 LQB 3 3 Syllidae (unidentified) 1 
I 
I 090CT92 LQB 3 3 Paraonidae Grp. A 1 090CT92 LQB 3 3 Ophiuroidea (unidentified) 2 090CT92 LQB 3 3 Mediomastus ambiseta 10 
25 
I 	090CT92 LQB 3 10 Oligochaetes (unidentified) 6 090CT92 LQB 3 10 Tharyx setigera 1 090CT92 LQB 3 10 Paraonidae Grp. A 6
I 	090CT92 LQB 3 10 Mediomastus ambiseta 5 
I 
18 
I 

I 	, 
64 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
090CT92 LQC 1 3 Rhynchocoel (unidentified) 1 
I 
I 
I 
090CT92 LQC 1 3 Eteone heteropoda 2 090CT92 LQC 1 3 Minuspio cirrifera 2 090CT92 LQC 1 3 Spiochaetopterus costarum 1 090CT92 LQC 1 3 Axiothel/a mucosa 3 090CT92 LQC 1 3 Maldanidae (unidentified) 3 090CT92 LQC 1 3 /so/da pulchella 1 090CT92 LQC 1 3 Macoma tenta 1 090CT92 LQC 1 3 Ampelisca verril/i 4 090CT92 LQC 1 3 Ophiuroidea (unidentified) 1 090CT92 LQC 1 3 Sphaerosyllis sp. A 1 090CT92 LQC 1 3 Mediomastus ambiseta 34 I 090CT92 LQC 1 3 Terebel/ides stroemi 1 
I 
I 55 090CT92 LQC 1 10 Rhynchocoel (unidentified) 4 
090CT92 LQC 1 10 Oligochaetes (unidentified) 4I 090CT92 LQC 1 10 Diopatra cuprea 1 
090CT92 LQC 1 10 Spiophanes bombyx 1 
090CT92 LQC 1 10 Tharyx setigera 1I 090CT92 LQC 1 10 Maldanidae (unidentified) 1 
090CT92 LQC 1 10 Tellina sp 2 
090CT92 LQC 1 10 Pilargiidae (unidentified) 1I 090CT92 LQC 1 10 Hesionidae (unidentified) 1 
090CT92 LQC 1 10 Paraonidae Grp. A 4 
I 
090CT92 LQC 1 10 Paraonidae Grp. B 2 
090CT92 LQC 1 10 Caecum johnsoni 1 
090CT92 LQC 1 10 Mediomastus ambiseta 9 
I 32 I I I I 
65 
I 
I 	Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species 	n 
090CT92 LQC 2 3 Rhynchocoel (unidentified) 2
I 	090CT92 LQC 2 3 Streblospio benedicti 1 090CT92 LQC 2 3 Minuspio cirrifera 6 090CT92 LQC 2 3 Spiochaetopterus costarum 1
I 
090CT92 LQC 2 3 Tharyx setigera 1 090CT92 LQC 2 3 Maldanidae (unidentified) 1 090CT92 LQC 2 3 PaNilucina multilineata 1I 
090CT92 LQC 2 3 Te/Jina sp 2 090CT92 LQC 2 3 Periploma margaritaceum 1I 090CT92 LQC 2 3 Ampe/isca verrilli 1 090CT92 LQC 2 3 Opisthosyllis sp. 5 090CT92 LQC 2 3 Armandia maculata 2I 090CT92 LQC 2 3 Mediomastus ambiseta 27 
I 	51 
090CT92 LQC 2 10 Rhynchocoel (unidentified) 1 090CT92 LQC 2 10 Oligochaetes (unidentified) 1I 090CT92 LQC 2 10 Minuspio cirrifera 2 090CT92 LQC 2 10 Magelona phyllisae 1 090CT92 LQC 2 10 Tharyx setigera 3I 090CT92 LQC 2 10 Paraonidae Grp. A 3 090CT92 LQC 2 10 Mediomastus ambiseta 2 
I 	13 
I I I I I I 
66 
I 
1· 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species n 
I 
090CT92 LQC 3 3 Rhynchocoel (unidentified) 2 
I 
090CT92 LQC 3 3 Diopatra cuprea 1 090CT92 LQC 3 3 Minuspio cirrifera 3 090CT92 LQC 3 3 Mage/ona pettiboneae 1 I 
I 
I 
090CT92 LQC 3 3 Spiochaetopterus costarum 2 090CT92 LQC 3 3 Armandia agilis 1 090CT92 LQC 3 3 Axiothel/a mucosa 1 090CT92 LQC 3 3 Owenia fusiformis 1 090CT92 LQC 3 3 Mulinia Jateralis 3 090CT92 LQC 3 3 T el/ina texana 1 090CT92 LQC 3 3 Oxyurostylis salinoi 1 090CT92 LQC 3 3 Edotea montosa 1 090CT92 LQC 3 3 Ampelisca verrilli 1 090CT92 LQC 3 3 Nereidae (unidentified) 1 090CT92 LQC 3 3 Opisthosyllis sp. 1 I 090CT92 LQC 3 3 Sarsiel/a texana 1 
090CT92 LQC 3 3 Mediomastus ambiseta 38 
I 60 090CT92 LQC 3 10 Rhynchocoel (unidentified) 1
I 090CT92 LQC 3 10 Oligochaetes (unidentified) 2 090CT92 LQC 3 10 Magelona phyllisae 1 090CT92 LQC 3 10 Tharyx setigera 1I 090CT92 LQC 3 10 Litocorsa stremma 1 
I 
090CT92 LQC 3 10 Clymenella torquata 1 090CT92 LQC 3 10 lsolda pulchel/a 1 090CT92 LQC 3 10 Paraonidae Grp. B 3 090CT92 LQC 3 10 Mediomastus ambiseta 6 
I 17 
I I I I 
67 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
090CT92 NCC 1 3 Rhynchocoel (unidentified) 1 
I 
I 
090CT92 NCC 1 3 Gyptis vittata 1 090CT92 NCC 1 3 Diopatra cuprea 2 090CT92 NCC 1 3 Sifeb/ospio benedicil 69 090CT92 NCC 1 3 Paraprionospio pinnata 1 090CT92 NCC 1 3 Cossura delta 2 090CT92 NCC 1 3 Mulinia lateralis 2 090CT92 NCC 1 3 Cyclaspis varians 3 090CT92 NCC 1 3 Ophiuroidea (unidentified) 2 I 090CT92 NCC 1 3 Mysidopsis sp. 3 090CT92 NCC 1 3 Mediomastus ambiseta 63 
I 149 090CT92 NCC 1 10 Rhynchocoel (unidentified) 2
I 090CT92 NCC 1 10 Lumbrineris parvapedata 2 090CT92 NCC 1 10 Streblospio benedicti 1 090CT92 NCC 1 10 Tharyx setigera 5I 090CT92 NCC 1 10 Cossura delta 1 
I 
090CT92 NCC 1 10 Listriella bamardi 2 090CT92 NCC 1 10 Ophiuroidea (unidentified) 1 090CT92 NCC 1 10 Mediomastus ambiseta 9 
I 
23 
I 
090CT92 NCC 2 3 Anthozoa (unidentified) 1 090CT92 NCC 2 3 Rhynchocoel (unidentified) 1I 090CT92 NCC 2 3 Streblospio benedicti 62 090CT92 NCC 2 3 Paraprionospio pinnata 1 090CT92 NCC 2 3 Cossura delta 1 
I 
090CT92 NCC 2 3 Mulinia lateralis 2 090CT92 NCC 2 3 Edotea montosa 1 090CT92 NCC 2 3 Phascolion strombi 1 
I 
090CT92 NCC 2 3 Phoronis architecta 1 090CT92 NCC 2 3 Listriella bamardi 3 090CT92 NCC 2 3 Ophiuroidea (unidentified) 1 
090CT92 NCC 2 3 Mediomastus ambiseta 40 
I 115 
I 

68 
I 
I 	Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species 	n 
I 
090CT92 NCC 2 10 Rhynchocoel (unidentified) 1 
I 
090CT92 NCC 2 10 Lumbrineris parvapedata 2 090CT92 NCC 2 10 Paraprionospio pinnata 1 090CT92 NCC 2 10 Tharyx setigera 5 
I 
090CT92 NCC 2 10 Cossura delta 1 090CT92 NCC 2 10 Maldanidae (unidentified) 1 090CT92 NCC 2 10 Listriel/a bamardi 1 
090CT92 NCC 2 10 Mediomastus ambiseta 9 
I 
21 
090CT92 NCC 3 3 Rhynchocoel (unidentified) 1 I 090CT92 NCC 3 3 Lumbrineris parvapedata 1 090CT92 NCC 3 3 Streblospio benedicti 80 090CT92 NCC 3 3 Paraprionospio pinnata 4I 090CT92 NCC 3 3 Tharyx setigera 1 090CT92 NCC 3 3 Cossura delta 3 090CT92 NCC 3 3 Mu/inia lateralis 3I 090CT92 NCC 3 3 Cyclaspis varians 1 090CT92 NCC 3 3 Monoculodes sp. 1 090CT92 NCC 3 3 Ophiuroidea (unidentified) 1 
·~
I 	090CT92 NCC 3 3 Sphaerosyllis sp. A 1 090CT92 NCC 3 3 Mediomastus ambiseta 52 
I 	149 
I 
I 
090CT92 NCC 3 10 Rhynchocoel (unidentified) 2 090CT92 NCC 3 10 Streblospio benedicti 3 090CT92 NCC 3 10 Tharyx setigera 2 090CT92 NCC 3 10 Mediomastus ambiseta 13 
20 
I 
I 090CT92 NCO 1 3 Streblospio benedicti 72 090CT92 NCO 1 3 A/igena texasiana 1 090CT92 NCO 1 3 Mulinia lateralis 2 
090CT92 NCO 1 3 Acteocina canaliculata 1 090CT92 NCO 1 3 Mediomastus ambiseta 21 
I 
97 
I 
69 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
090CT92 NCO 1 10 Streb/ospio benedicti 90I Paraprionospio pinnata 3
090CT92 NCO 1 10 090CT92 NCO 1 10 Listriella bamardi 2 
I 95 
I 
2 Rhynchocoel (unidentified) 1090CT92 NCO 3 
I 
090CT92 NCO 2 3 G/ycinde solitaria 1 090CT92 NCO 2 3 Streblospio benedicti 140 090CT92 NCO 2 3 Mulinia lateralis 4 
Mediomastus ambiseta 21
090CT92 NCO 2 3 
I 
167 
090CT92 NCO 2 10 Streblospio benedicti 21 I 090CT92 NCO 2 10 Paraprionospio pinnata 2 090CT92 NCO 2 10 Minuspio cirrifera 1 090CT92 NCO 2 10 Mediomastus ambiseta 1
I 
25 
I 090CT92 NCO 3 3 Rhynchocoel (unidentified) 1 090CT92 NCO 3 3 Streb/ospio benedicti 74 090CT92 NCO 3 3 Mulinia lateralis 3I 090CT92 NCO 3 3 Oxyurostylis salinoi 1 
I 
090CT92 NCO 3 3 Mollusca (unidentified) 1 090CT92 NCO 3 3 Mediomastus ambiseta 23 
103 
I 
I 090CT92 NCO 3 10 Podarke obscura 1 090CT92 NCO 3 10 Streb/ospio benedicti 95 090CT92 NCO 3 10 Spiochaetopterus costarum 2 
I 
090CT92 NCO 3 10 Listriella bamardi 2 090CT92 NCO 3 10 Paraonidae Grp. A 1 090CT92 NCO 3 10 Mediomastus ambiseta 2 
103 
I 
I 

70 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
090CT92 NCE 1 3 Sthenelais boa 	1
I 	090CT92 NCE 1 3 Streblospio benedicti 3 090CT92 NCE 1 3 Spiochaetopterus costarum 1 090CT92 NCE 1 3 Mulinia lateralis 3 
I 
I 090CT92 NCE 1 3 Listriella c/ymenellae 1 090CT92 NCE 1 3 Paraonidae Grp. B 1 090CT92 NCE 1 3 Asychis elongata 1 
090CT92 NCE 1 3 Mediomastus ambiseta 19 090CT92 NCE 1 3 Euclymene sp. B 2 
I 	32 
090CT92 NCE 1 10 Rhynchocoel (unidentified) 2
I 	7
090CT92 NCE 1 10 Oligochaetes (unidentified) 090CT92 NCE 1 10 Pa/eanotus heteroseta 2 090CT92 NCE 1 10 Gyptis vittata 1
I 	1
090CT92 NCE 1 10 Dorvil/ea rubra 090CT92 NCE 1 10 Paraprionospio pinnata 1
I 	090CT92 NCE 1 10 Magelona pettiboneae 1 090CT92 NCE 1 10 Tharyx setigera 10 090CT92 NCE 1 10 Clymenella torquata 1 
I 
I 090CT92 NCE 1 10 Listriella clymenellae 1 090CT92 NCE 1 10 Phoronis architecta 2 090CT92 NCE 1 10 Paraonidae Grp. A 1 090CT92 NCE 1 10 Paraonidae Grp. B 3 090CT92 NCE 1 10 Euclymene sp. B 1 
I 	34 
I 
090CT92 NCE 2 3 Rhynchocoel (unidentified) 1 
I 
090CT92 NCE 2 3 Polydora caulleryi 4 090CT92 NCE 2 3 Streblospio benedicti 1 090CT92 NCE 2 3 Branchioasychis americana 1I 090CT92 NCE 2 3 Listriella clymenellae 1 090CT92 NCE 2 3 Microprotopus spp. 1 090CT92 NCE 2 3 Mediomastus ambiseta 10 
I 19 I 
71 
I I 
I Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
· Date STA REP SEC Species n 
I 
090CT92 NCE 2 10 Rhynchocoel (unidentified) 1 
I 
090CT92 NCE 2 10 Paleanotus heteroseta 2 090CT92 NCE 2 10 Spiophanes bombyx 1 090CT92 NCE 2 10 Mage/ona phyllisae 1 I 
090CT92 NCE 2 10 Tharyx setigera 2 090CT92 NCE 2 10 Listriella c/ymenellae 1 090CT92 NCE 2 10 Phoronis architecta 1 090CT92 NCE 2 10 Pinnixa sp. 1 090CT92 NCE 2 10 Mediomastus ambiseta 1 
I 
11 
I 090CT92 NCE 3 3 Oligochaetes (unidentified) 5 090CT92 NCE 3 3 Gyptis vittata 1 090CT92 NCE 3 3 Polydora caulleryi 1I 090CT92 NCE 3 3 Streblospio benedicti 5 090CT92 NCE 3 3 Paraprionospio pinnata 1 090CT92 NCE 3 3 Spiochaetopterus costarum 1I 090CT92 NCE 3 3 Branchioasychis americana 1 090CT92 NCE 3 3 Clymenel/a torquata 2 090CT92 NCE 3 3 Mulinia /ateralis 3I 090CT92 NCE 3 3 Listriella bamardi 2 
I 
090CT92 NCE 3 3 Paraonidae Grp. A 2 090CT92 NCE 3 3 Paraonidae Grp. 8 4I 090CT92 NCE 3 3 Ophiuroidea (unidentified) 1 090CT92 NCE 3 3 Sphaerosyllis sp. A 1 090CT92 NCE 3 3 Leucon sp. 1 
I 
090CT92 NCE 3 3 Cymadusa compta 1 090CT92 NCE 3 3 Mediomastus ambiseta 28 090CT92 NCE 3 3 Euc/ymene sp. 8 4 
64 
I I I I 
72 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
090CT92 NCE 3 10 Oligochaetes (unidentified) 12 
I 
090CT92 NCE 3 10 Pa/eanotus heteroseta 2 090CT92 NCE 3 10 Glycera americana 1 090CT92 NCE 3 10 Polydora caulleryi 2 
I 
I 
090CT92 NCE 3 10 Paraprionospio pinnata 1 090CT92 NCE 3 10 Spiochaetopterus costarum 1 090CT92 NCE 3 10 Tharyx setigera 1 090CT92 NCE 3 10 Paraonidae Grp. B 1 090CT92 NCE 3 10 Ophiuroidea (unidentified) 1 090CT92 NCE 3 10 Pinnixa sp. 1 
090CT92 NCE 3 10 Hemicyclops sp. 1 090CT92 NCE 3 10 Mediomastus ambiseta 3 
I 
27 
I 15JAN93 LOA 1 3 Rhynchocoel (unidentified) 1 
I 
I 
15JAN93 LOA 1 3 Oligochaetes (unidentified) 8 15JAN93 LOA 1 3 Glycera americana 1I 15JAN93 LOA 1 3 Lumbrineris parvapedata 1 15JAN93 LOA 1 3 Tharyx setigera 3 15JAN93 LOA 1 3 Axiothel/a mucosa 2I 15JAN93 LOA 1 3 Clymenella torquata 2 15JAN93 LOA 1 3 Dentalium texasianum 2 15JAN93 LOA 1 3 Nuculana acuta 1 15JAN93 LOA 1 3 Parvilucina multilineata 1 15JAN93 LOA 1 3 Tellina texana 1 15JAN93 LOA 1 3 Lyonsia hyalina f/oridana 1 
I 
15JAN93 LQA 1 3 Listriella clymenellae 2 15JAN93 LQA 1 3 Sphaerosyl/is cf. sublaevis 1 15JAN93 LOA 1 3 Schistomeringos sp. A 8I 15JAN93 LQA 1 3 Paraonidae Grp. A 8 15JAN93 LOA 1 3 Armandia maculata 2 15JAN93 LQA 1 3 Sphaerosyl/is sp. A 1 
15JAN93 LOA 1 3 Mediomastus ambiseta 33 
I 
79 
I 
I 

73 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
15JAN93 LQA 1 10 Rhynchocoel (unidentified) 2
I 	15JAN93 LQA 1 10 Oligochaetes (unidentified) 8 15JAN93 LQA 1 10 Gyptis vittata 2 15JAN93 LQA 1 10 Lumbrineris parvapedata 1
I 
15JAN93 LQA 1 10 Schistomeringos rudolphi 1 15JAN93 LQA 1 10 Tharyx setigera 5 15JAN93 LQA 1 10 Branchioasychis americana 1I 
15JAN93 LQA 1 10 Axiothella mucosa 1 15JAN93 LQA 1 10 Clymenella torquata 3 I 15JAN93 LQA 1 10 Mysella planulata 1 15JAN93 LQA 1 10 Schistomeringos sp. A 4 15JAN93 LQA 1 10 Rictaxis punctostriatus 1I 15JAN93 LQA 1 10 Mediomastus ambiseta 7 
I 	37 
15JAN93 LQA 2 3 Rhynchocoel (unidentified) 1 15JAN93 LQA 2 3 Oligochaetes (unidentified) 3I 15JAN93 LQA 2 3 Pa/eanotus heteroseta 4 
I 
15JAN93 LQA 2 3 Eumida sanguinea 1 15JAN93 LQA 2 3 G/ycera americana 1I 15JAN93 LQA 2 3 G/ycinde solitaria 1 15JAN93 LQA 2 3 Spiophanes bombyx 1 15JAN93 LQA 2 3 Paraprionospio pinnata 1I 15JAN93 LQA 2 3 Minuspio cirrifera 4 15JAN93 LQA 2 3 Tharyx setigera 2 15JAN93 LQA 2 3 Axiothella mucosa 1 
I 
I 
15JAN93 LQA 2 3 Clymenella torquata 3 15JAN93 LQA 2 3 Mulinia lateralis 1 15JAN93 LQA 2 3 Tellina texana 2I 15JAN93 LQA 2 3 Lyonsia hya/ina floridana 1 15JAN93 LQA 2 3 Ampelisca verrilli 1 15JAN93 LQA 2 3 Sphaerosyllis cf. sublaevis 1 15JAN93 LQA 2 3 Schistomeringos sp. A 1 15JAN93 LQA 2 3 Paraonidae Grp. A 8 15JAN93 LQA 2 3 Mediomastus ambiseta 9 
I 47 I 
74 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
15JAN93 LQA 2 10 Oligochaetes (unidentified) 5
I 	15JAN93 LQA 2 10 Paleanotus heteroseta 4 15JAN93 LQA 2 10 Gyptis vittata 3 15JAN93 LQA 2 10 Schistomeringos rudolphi 1
I 
15JAN93 LQA 2 10 Spiophanes bombyx 1 15JAN93 LQA 2 10 Tharyx setigera 11 15JAN93 LQA 2 10 Axiothel/a mucosa 1I 
15JAN93 LQA 2 10 C/ymenella torquata 5 15JAN93 LQA 2 10 Vitrine/la f/oridana 1 I 15JAN93 LQA 2 10 Aligena texasiana 1 15JAN93 LQA 2 10 Phoronis architecta 1 15JAN93 LQA 2 10 Schistomeringos sp. A 3I 15JAN93 LQA 2 10 Paraonidae Grp. B 18 15JAN93 LQA 2 10 Laeonereis cu/veri 1 15JAN93 LQA 2 10 Mediomastus ambiseta 9
I 
65 
I 	15JAN93 LQA 3 3 Rhynchocoel (unidentified) 3 15JAN93 LQA 3 3 Eumida sanguinea 2 15JAN93 LQA 3 3 Glycera americana 2
I 	15JAN93 LQA 3 3 Lumbrineris parvapedata 1 15JAN93 LQA 3 3 Polydora socialis 1 15JAN93 LQA 3 3 Spiophanes bombyx 1
I 	15JAN93 LQA 3 3 Tharyx setigera 2 15JAN93 LQA 3 3 Armandia agi/is 1 15JAN93 LQA 3 3 Axiothel/a mucosa 3 
I 
I 15JAN93 LQA 3 3 Clymenella torquata 2 15JAN93 LQA 3 3 Owenia fusiformis 1 15JAN93 LQA 3 3 Periploma margaritaceum 1 
I 
15JAN93 LQA 3 3 Paraonidae Grp. A 7 15JAN93 LQA 3 3 Ophiuroidea (unidentified) 1 15JAN93 LQA 3 3 Armandia maculata 1 
15JAN93 LQA 3 3 Mediomastus ambiseta 9 
I 	38 
I 
I 

75 
I I 
I 	Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species 	n 
15JAN93 LOA 3 10 Rhynchocoel (unidentified) 3
I 	15JAN93 LOA 3 10 Oligochaetes (unidentified) 5 15JAN93 LOA 3 10 Paleanotus heteroseta 1 15JAN93 LOA 3 10 Gyptis vittata 3
I 
15JAN93 LOA 3 10 Lumbrineris parvapedata 5 15JAN93 LOA 3 10 Polydora caul/eryi 1 15JAN93 LOA 3 10 Tharyx setigera 10 
I 
I 
15JAN93 LOA 3 10 Notomastus /atericeus 1 15JAN93 LOA 3 10 Clymenella torquata 1 15JAN93 LOA 3 10 /so/da pulchel/a 1 
15JAN93 LOA 3 10 Listriella clymenellae 1 15JAN93 LOA 3 10 Schistomeringos sp. A 1 I 15JAN93 LOA 3 10 Paraonidae Grp. B 3 15JAN93 LOA 3 10 Laeonereis culveri 1 15JAN93 LOA 3 10 Mediomastus ambiseta 4
I 
41 
I 
I 
I 

I 

I 
I 
I 
I 
I 
76 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
Date STA REP SEC Species n 
15JAN93 LQB 1 3 Anthozoa (unidentified) 1 15JAN93 LQB 1 3 Rhynchocoel (unidentified) 2 15JAN93 LQB 1 3 Oligochaetes (unidentified) 5 15JAN93 LQB 1 3 G/ycinde solitaria 2 15JAN93 LQB 1 3 Lumbrineris parvapedata 1 15JAN93 LQB 1 3 Spiophanes bombyx 2 15JAN93 LQB 1 3 Spio setosa 1 15JAN93 LQB 1 3 Streblospio benedicti 1 15JAN93 LQB 1 3 Tharyx setigera 1 15JAN93 LQB 1 3 Haploscoloplos fo/iosus 1 15JAN93 LQB 1 3 Axiothella mucosa 1 15JAN93 LQB 1 3 Clymenella torquata 1 15JAN93 LQB 1 3 Nuculana acuta 1 15JAN93 LQB 1 3 Parvilucina multilineata 1 15JAN93 LQB 1 3 Mulinia lateralis 1 15JAN93 LQB 1 3 Tellina texana 4 15JAN93 LQB 1 3 Acteocina canaliculata 1 15JAN93 LQB 1 3 Sphaerosyl/is cf. sublaevis 2 15JAN93 LQB 1 3 Schistomeringos sp. A 2 15JAN93 LQB 1 3 Paraonidae Grp. B 6 15JAN93 LQB 1 3 Sarsiella texana 1 15JAN93 LQB 1 3 Sphaerosyl/is sp. A 1 15JAN93 LQB 1 3 Mo/gula manhattensis 8 15JAN93 LQB 1 3 Mediomastus ambiseta 13 15JAN93 LQB 1 3 Synsyllis longigularis 13 
73 
77 

Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
15JAN93 LOB 1 10 Oligochaetes (unidentified) 4 15JAN93 LQB 1 10 Gyptis vittata 1 15JAN93 LQB 1 10 Tharyx setigera 3 15JAN93 LOB 1 10 Axiothella mucosa 1 I 
15JAN93 LOB 1 10 Clymenella torquata 2 
15JAN93 LQB 1 10 Aligena texasiana 1 
15JAN93 LOB 1 10 Schistomeringos sp. A 3
I 15JAN93 LQB 1 10 Paraonidae Grp. A 6 
15JAN93 LOB 1 10 Paraonidae Grp. B 4 
15JAN93 LQB 1 10 Caecum johnsoni 3 
15JAN93 LOB 1 10 Mediomastus ambiseta 3 
15JAN93 LOB 1 10 Synsyllis longigularis 2 

I 	33 
15JAN93 LQB 2 3 Rhynchocoel (unidentified) 1
I 
15JAN93 LOB 2 3 Oligochaetes (unidentified) 1 15JAN93 LQB 2 3 Eumida sanguinea 1I 15JAN93 LQB 2 3 Glycinde solitaria 1 15JAN93 LQB 2 3 Clymenella torquata 1 r:~­15JAN93 LQB 2 3 Aligena texasiana 2
I 	15JAN93 LQB 2 3 T ellina texana 1 .;i. '15JAN93 LQB 2 3 Schistomeringos sp. A 1 15JAN93 LQB 2 3 Paraonidae Grp. A 4
I 	15JAN93 LQB 2 3 Paraonidae Grp. B 5 15JAN93 LQB 2 3 Armandia maculata 2 15JAN93 LQB 2 3 Sarsiella texana 1 
I 
I 15JAN93 LQB 2 3 Molgula manhattensis 61 15JAN93 LQB 2 3 Mediomastus ambiseta 6 15JAN93 LQB 2 3 Synsyl/is longigularis 4 
92 
I I I I 
78 
·1 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species n 
I 
15JAN93 LOB 2 10 Anthozoa (unidentified) 1 
I 
15JAN93 LOB 2 10 Rhynchocoel (unidentified) 3 15JAN93 LOB 2 10 Oligochaetes (unidentified) 4 15JAN93 LOB 2 10 Gyptis vittata 2 I 
I 
15JAN93 LOB 2 10 Clymenella torquata 2 15JAN93 LOB 2 10 Schistomeringos sp. A 1 15JAN93 LOB 2 10 Paraonidae Grp. A 4 15JAN93 LOB 2 10 Paraonidae Grp. B 10 15JAN93 LOB 2 10 Mo/gula manhattensis 4 15JAN93 LOB 2 10 Mediomastus ambiseta 3 15JAN93 LOB 2 10 Synsyl/is /ongigularis 4 
I 38 
15JAN93 LOB 3 3 Eumida sanguinea 1I 15JAN93 LOB 3 3 Spiophanes bombyx 1 
I 
15JAN93 LOB 3 3 Paraprionospio pinnata 1 15JAN93 LOB 3 3 Clymenella torquata 3I 15JAN93 LOB 3 3 Aligena texasiana 1 15JAN93 LOB 3 3 Tellina texana 1 15JAN93 LOB 3 3 Oxyurostylis salinoi 2I 15JAN93 LOB 3 3 Pyrgiscus sp. 1 15JAN93 LOB 3 3 Paraonidae Grp. B 3 15JAN93 LOB 3 3 Truncate/la caribaeensis 1I 15JAN93 LOB 3 3 Molgu/a manhattensis 30 15JAN93 LOB 3 3 Lembos sp. 1 15JAN93 LOB 3 3 Turbellaria (unidentified) 1 15JAN93 LOB 3 3 Mediomastus ambiseta 2 15JAN93 LOB 3 3 Synsyllis /ongigularis 3 
I 52 
I I I I 
79 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
15JAN93 LOB 3 10 Oligochaetes (unidentified) 5
I G/ycinde so/itaria 1
15JAN93 LOB 3 10 15JAN93 LQB 3 10 Spio setosa 1 15JAN93 LOB 3 10 Minuspio cirrifera 1I Tharyx setigera 3
15JAN93 LOB 3 10 15JAN93 LOB 3 10 Paraonidae Grp. A 6 15JAN93 LQB 3 10 Paraonidae Grp. B 9
I Molgu/a manhattensis 2 
I 
15JAN93 LQB 3 10 15JAN93 LOB 3 10 Mediomastus ambiseta 4 15JAN93 LOB 3 10 Synsyllis /ongigularis 5 
37 
I 
15JAN93 LQC 1 3 Anthozoa (unidentified) 1 15JAN93 LQC 1 3 Oligochaetes (unidentified) 1 I 15JAN93 LQC 1 3 Eumida sanguinea 2 15JAN93 LQC 1 3 Schistomeringos rudolphi 1 15JAN93 LQC 1 3 Minuspio cirrifera 3I 15JAN93 LQC 1 3 Spiochaetopterus costarum 1 15JAN93 LQC 1 3 Tharyx setigera 1 15JAN93 LQC 1 3 Axiothel/a mucosa 1I 15JAN93 LQC 1 3 Mulinia Jateralis 2 15JAN93 LQC 1 3 Ampe/isca verrilli 2 15JAN93 LQC 1 3 Phoronis architecta 1I 15JAN93 LQC 1 3 T ellidora cristata 1 
I 
15JAN93 LQC 1 3 Sphaerosyllis cf. sublaevis 3 15JAN93 LQC 1 3 Paraonidae Grp. A 7I 15JAN93 LQC 1 3 Paraonidae Grp. B 9 15JAN93 LQC 1 3 Ophiuroidea (unidentified) 1 15JAN93 LQC 1 3 Sarsiella texana 1I 15JAN93 LQC 1 3 Rictaxis punctostriatus 1 15JAN93 LQC 1 3 Mediomastus ambiseta 9 15JAN93 LQC 1 3 Synsyllis longigularis 1 
49 
I 
I 
I 

80 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
15JAN93 LQC 1 10 Rhynchocoel (unidentified) 1
I 	15JAN93 LQC 1 10 Gyptis vittata 1 15JAN93 LQC 1 10 Magelona pettiboneae 2 15JAN93 LQC 1 10 Axiothel/a mucosa 1
I 
15JAN93 LQC 1 10 /solda pulchel/a 1 15JAN93 LQC 1 10 Aligena texasiana 1 15JAN93 LQC 1 10 Paraonidae Grp. A 6I 
15JAN93 LQC 1 10 Mediomastus ambiseta 6 
I 
19 
15JAN93 LQC 2 3 Anthozoa (unidentified) 1 I 15JAN93 LQC 2 3 Rhynchocoel (unidentified) 2 15JAN93 LQC 2 3 Oligochaetes (unidentified) 2 15JAN93 LQC 2 3 Eumida sanguinea 2 15JAN93 LQC 2 3 G/ycinde solitaria 1
I 	1
15JAN93 LQC 2 3 Spiophanes bombyx 15JAN93 LQC 2 3 Minuspio cirrifera 4
I 	15JAN93 LQC 2 3 Haplosco/oplos foliosus 3 15JAN93 LQC 2 3 /so/da pu/chella 1 15JAN93 LQC 2 3 Parvilucina multilineata 1 
I 
I 15JAN93 LQC 2 3 Aligena texasiana 3 15JAN93 LQC 2 3 T ellina texana 1 15JAN93 LQC 2 3 Ampelisca verrilli 1 15JAN93 LQC 2 3 Sphaerosyllis cf. sub/aevis 1 
I 
15JAN93 LQC 2 3 Paraonidae Grp. A 1 15JAN93 LQC 2 3 Paraonidae Grp. B 4 
I 
15JAN93 LQC 2 3 Ophiuroidea (unidentified) 1 15JAN93 LQC 2 3 Armandia maculata 2 15JAN93 LQC 2 3 Sarsiella texana 1 
I 
15JAN93 LQC 2 3 Sphaerosyllis sp. A 6 15JAN93 LQC 2 3 Mediomastus ambiseta 3 15JAN93 LQC 2 3 Synsyllis longigularis 7 
49 
I 
I 
I 

81 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
15JAN93 LQC 2 10 Rhynchocoel (unidentified) 2
I 15JAN93 LQC 2 10 Oligochaetes (unidentified) 2 
15JAN93 LQC 2 10 Gyptis vittata 1 
I 
15JAN93 LQC 2 10 G/ycera americana 1 I 
15JAN93 LQC 2 10 Spiophanes bombyx 1 15JAN93 LQC 2 10 C/ymenella torquata 1 15JAN93 LQC 2 10 Aligena texasiana 3I 15JAN93 LQC 2 10 Te/Jina texana 1 15JAN93 LQC 2 10 Ampe/isca verrilli 1 15JAN93 LQC 2 10 Phoronis architecta 1I 15JAN93 LQC 2 10 Schistomeringos sp. A 2 15JAN93 LQC 2 10 Paraonidae Grp. A 14 15JAN93 LQC 2 10 Paraonidae Grp. B 4 15JAN93 LQC 2 10 Ophiuroidea (unidentified) 1 15JAN93 LQC 2 10 Mediomastus ambiseta 3 
I 
38 
I I I I I I I I I 
82 
I I I I I I I I I I I I I I I I I I I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. · 
I 
15JAN93 LQC 3 3 Anthozoa (unidentified) 2 
I 
15JAN93 LQC 3 3 Rhynchocoel (unidentified) 2 15JAN93 LQC 3 3 Oligochaetes (unidentified) 2 15JAN93 LQC 3 3 Gyptis vittata 1 I 
I 
15JAN93 LQC 3 3 Glycinde solitaria 1 15JAN93 LQC 3 3 Spiochaetopterus costarum 1 15JAN93 LQC 3 3 Tharyx setigera 1 15JAN93 LQC 3 3 Axiothella mucosa 2 15JAN93 LQC 3 3 C/ymenella torquata 4 15JAN93 LQC 3 3 Nucu/ana acuta 1 15JAN93 LQC 3 3 Parvilucina multilineata 1 15JAN93 LQC 3 3 Aligena texasiana 2 I 15JAN93 LQC 3 3 Te/Jina texana 3 
15JAN93 LQC 3 3 Phoronis architecta 12 15JAN93 LQC 3 3 Paraonidae Grp. A 1 I 15JAN93 LQC 3 3 Paraonidae Grp. B 4 15JAN93 LQC 3 3 Sarsiel/a texana 1 15JAN93 LQC 3 3 Microprotopus spp. 1I 15JAN93 LQC 3 3 Sphaerosyllis sp. A 8 15JAN93 LQC 3 3 Laeonereis cu/veri 1 15JAN93 LQC 3 3 Rictaxis punctostriatus 1I 15JAN93 LQC 3 3 Mediomastus ambiseta 5 
I 
57 
I 
I 
15JAN93 LQC 3 10 Rhynchocoel (unidentified) 1 15JAN93 LQC 3 10 G/ycera americana 1 15JAN93 LQC 3 10 Onuphis eremita 1 15JAN93 LQC 3 10 Mage/ona pettiboneae 1 15JAN93 LQC 3 10 Tharyx setigera 2 
I 
15JAN93 LQC 3 10 Capitella capitata 1 15JAN93 LQC 3 10 Melinna maculata 1 15JAN93 LQC 3 10 /solda pulchella 1 I 
15JAN93 LQC 3 10 Phoronis architecta 1 15JAN93 LQC 3 10 Paraonidae Grp. A 13 15JAN93 LQC 3 10 Paraonidae Grp. B 4 15JAN93 LQC 3 10 Mediomastus ambiseta 1 15JAN93 LQC 3 10 Synsyllis longigularis 1 
I 29 
I 
83 
~-­
I 

I Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species 	n 
I 
I 
15JAN93 NCC 1 3 Rhynchocoel (unidentified) 1 15JAN93 NCC 1 3 Gyptis vittata 2 15JAN93 NCC 1 3 Glycinde solitaria 1 15JAN93 NCC 1 3 Paraprionospio pinnata 2 
I 
15JAN93 NCC 1 3 Nuculana acuta 1 15JAN93 NCC 1 3 Mulinia lateralis 3 15JAN93 NCC 1 3 Phascolion strombi 1 
15JAN93 NCC 1 3 Ophiuroidea (unidentified) 1 
15JAN93 NCC 1 3 Sphaerosyl/is sp. A 	1 
I 
15JAN93 NCC 1 3 Periploma cf. orbiculare 1 
15JAN93 NCC 1 3 Mediomastus ambiseta 11 
I 
25 
1-
15JAN93 NCC 1 10 Oligochaetes (unidentified) 1 15JAN93 NCC 1 10 Gyptis vittata 1 
15JAN93 NCC 1 10 Lumbrineris parvapedata 1 15JAN93 NCC 1 10 Polydora caul/eryi 1I 15JAN93 NCC 1 10 Tharyx setigera 16 
(
15JAN93 NCC 1 10 Cossura delta 2 15JAN93 NCC 1 10 Abra aequalis 1 ~~ 
I 	15JAN93 NCC 1 10 Paraonidae Grp. A 1 15JAN93 NCC 1 10 Ophiuroidea (unidentified) 1 15JAN93 NCC 1 10 Mediomastus ambiseta 7
I 
32 
I 
I 15JAN93 NCC 2 3 Gyptis vittata 1 15JAN93 NCC 2 3 Glycinde so/itaria 2 15JAN93 NCC 2 3 Paraprionospio pinnata 1 
I 
15JAN93 NCC 2 3 Tharyx setigera 1 15JAN93 NCC 2 3 Cossura delta 1 15JAN93 NCC 2 3 Maldanidae (unidentified) 1 
I 
15JAN93 NCC 2 3 Nuculana acuta 1 15JAN93 NCC 2 3 Mulinia lateralis 4 15JAN93 NCC 2 3 Ophiuroidea (unidentified) 2 
15JAN93 NCC 2 3 Armandia maculata 	1 
15JAN93 NCC 2 3 Mediomastus ambiseta 15 
I 
15JAN93 NCC 2 3 Glycinde nordmanni 	1 
31 
I 
84 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
15JAN93 NCC 2 10 Tharyx setigera 4 15JAN93 NCC 2 10 Ophiuroidea (unidentified) 1 15JAN93 NCC 2 10 Mediomastus ambiseta 1 
I 	6 
I 
15JAN93 NCC 3 3 Rhynchocoel (unidentified) 1 
I 
I 
15JAN93 NCC 3 3 Paleanotus heteroseta 1 15JAN93 NCC 3 3 Eteone heteropoda 1 15JAN93 NCC 3 3 Paraprionospio pinnata 2 15JAN93 NCC 3 3 Tharyx setigera 2 15JAN93 NCC 3 3 Cossura delta 2 15JAN93 NCC 3 3 Phascolion strombi 2 15JAN93 NCC 3 3 Ophiuroidea (unidentified) 2 15JAN93 NCC 3 3 Sphaerosyllis sp. A 5 I 15JAN93 NCC 3 3 Mediomastus ambiseta 12 
I 	30 
I 
15JAN93 NCC 3 10 Rhynchocoel (unidentified) 1 15JAN93 NCC 3 10 Lumbrineris parvapedata 3I 15JAN93 NCC 3 10 Schistomeringos rudolphi 1 15JAN93 NCC 3 10 Tharyx setigera 1 15JAN93 NCC 3 10 Cossura delta 1 15JAN93 NCC 3 10 Ophiuroidea (unidentified) 2 
I 
15JAN93 NCC 3 10 Armandia maculata 1 15JAN93 NCC 3 10 Mediomastus ambiseta 5 
15 
I 
I 15JAN93 NCO 1 3 Anthozoa (unidentified) 1 15JAN93 NCO 1 3 Rhynchocoel (unidentified) 1 15JAN93 NCO 1 3 Glycinde so/itaria 1 
15JAN93 NCO 1 3 Paraprionospio pinnata 1 15JAN93 NCO 1 3 Oxyurostylis salinoi 2 15JAN93 NCO 1 3 Phascolion strombi 3
I 	15JAN93 NCO 1 3 Rictaxis punctostriatus 4 15JAN93 NCO 1 3 Mediomastus ambiseta 1 
I 	14 
I 
85 
I 
I Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species n 
I 
15JAN93 NCO 1 10 Mediomastus ambiseta 1 
I 
15JAN93 NCO 2 3 Rhynchocoel (unidentified) 3 15JAN93 NCO 2 3 Glycinde solitaria 4 
I 
I 
15JAN93 NCO 2 3 Paraprionospio pinnata 1 
15JAN93 NCD 2 3 Tharyx setigera 1 
15JAN93 NCD 2 3 Cyclaspis varians 1 
15JAN93 NCO 2 3 Oxyurostylis sa/inoi 2 
15JAN93 NCO 2 3 Ampelisca verrilli 1 
15JAN93 NCD 2 3 Caprellid 5 

15JAN93 NCO 2 3 Phascolion strombi 3 
15JAN93 NCO 2 3 Sphaerosyllis sp. A 2 
I 15JAN93 NCO 2 3 Periploma cf. orbiculare 1 15JAN93 NCO 2 3 Rictaxis punctostriatus 3 15JAN93 NCO 2 3 Mediomastus ambiseta 1
I 
28 
15JAN93 NCO 2 10 Polychaete juv. (unidentified) 1 ~~
I r 
-~ 
15JAN93 NCO 3 3 Anthozoa (unidentified) 1 ~ -· 
-·I 15JAN93 NCO 3 3 Rhynchocoel (unidentified) 3 
1­
I 
15JAN93 NCO 3 3 Haplosco/op/os foliosus 2 15JAN93 NCO 3 3 Caprellid 1I 15JAN93 NCO 3 3 Paraonidae Grp. A 2 15JAN93 NCO 3 3 Periploma cf. orbiculare 1 15JAN93 NCO 3 3 Rictaxis punctostriatus 4 
14 
I 15JAN93 NCO 3 10 Paraprionospio pinnata 3 15JAN93 NCO 3 10 Rictaxis punctostriatus 1 
I 4 
I 

I 

I 

86 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
15JAN93 NCE 1 3 Anthozoa (unidentified) 1 15JAN93 NCE 1 3 Rhynchocoel (unidentified) 1 15JAN93 NCE 1 3 Oligochaetes (unidentified) 5 15JAN93 NCE 1 3 Eteone heteropoda 1 
I 
15JAN93 NCE 1 3 Gyptis vittata 1 15JAN93 NCE 1 3 Glycera americana 1 15JAN93 NCE 1 3 Glycinde solitaria 1 
I 
15JAN93 NCE 1 3 Lumbrineris parvapedata 2 15JAN93 NCE 1 3 Tharyx setigera 3 15JAN93 NCE 1 3 Clymenella torquata 1 
I 
15JAN93 NCE 1 3 Melinna maculata 1 15JAN93 NCE 1 3 Nuculana acuta 1 15JAN93 NCE 1 3 Paraonidae Grp. A 4 
15JAN93 NCE 1 3 Sarsiella texana 1 15JAN93 NCE 1 3 Sphaerosyllis sp. A 1I 15JAN93 NCE 1 3 Ascidiacea 1 15JAN93 NCE 1 3 Mo/gula manhattensis 1 15JAN93 NCE 1 3 Asychis e/ongata 1I 15JAN93 NCE 1 3 Laeonereis cu/veri 1 15JAN93 NCE 1 3 Periploma cf. orbiculare 1 15JAN93 NCE 1 3 Caecum johnsoni 1I 15JAN93 NCE 1 3 Mollusca (unidentified) 1 15JAN93 NCE 1 3 Rictaxis punctostriatus 1 15JAN93 NCE 1 3 Mediomastus ambiseta 4
I 
37 
I 
I 15JAN93 NCE 1 10 Oligochaetes (unidentified) 1 15JAN93 NCE 1 10 Magelona phyllisae 1 15JAN93 NCE 1 10 Cossura delta 1 
I 
15JAN93 NCE 1 10 Paraonidae Grp. A 1 15JAN93 NCE 1 10 Paraonidae Grp. B 1 15JAN93 NCE 1 10 Ophiuroidea (unidentified) 1 
15JAN93 NCE 1 10 Mediomastus ambiseta 1 
I 7 
I 

I 

87 
I 
.. 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
15JAN93 NCE 2 3 Rhynchocoel (unidentified) 1 
I 
15JAN93 NCE 2 3 Anaitides erythrophyllus 1 15JAN93 NCE 2 3 Gyptis vittata 1 15JAN93 NCE 2 3 G/ycinde solitaria 4 I 
I 
15JAN93 NCE 2 3 Lumbrineris parvapedata 1 15JAN93 NCE 2 3 Spiochaetopterus costarum 1 15JAN93 NCE 2 3 Nucu/ana acuta 1 15JAN93 NCE 2 3 Phasco/ion strombi 1 15JAN93 NCE 2 3 Phoronis architecta 1 15JAN93 NCE 2 3 Paraonidae Grp. A 1 15JAN93 NCE 2 3 Ophiuroidea (unidentified) 2 15JAN93 NCE 2 3 Sphaerosyllis sp. A 2 I 15JAN93 NCE 2 3 Mo/gula manhattensis 1 
15JAN93 NCE 2 3 Rictaxis punctostriatus 2 15JAN93 NCE 2 3 Mediomastus ambiseta 4I 15JAN93 NCE 2 3 Euclymene sp. B 1 
I 25 ; 
. 
15JAN93 NCE 2 10 Oligochaetes (unidentified) 1 
Jc 
15JAN93 NCE 2 10 Notomastus latericeus 1 
I 
I 15JAN93 NCE 2 10 Phoronis architecta 1 :: ~ ' 15JAN93 NCE 2 10 Schistomeringos sp. A 3 ·'-: 15JAN93 NCE 2 10 Paraonidae Grp. A 3 15JAN93 NCE 2 10 Mediomastus ambiseta 1 
I 
10 
I I I I I 
88 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
15JAN93 NCE 3 3 Anthozoa (unidentified) 1 15JAN93 3 
I 
I NCE 3 Rhynchocoel (unidentified) 3 15JAN93 NCE 3 3 Oligochaetes (unidentified) 4 15JAN93 NCE 3 3 Paleanotus heteroseta 2 
I 
15JAN93 NCE 3 3 Eteone heteropoda 1 15JAN93 NCE 3 3 Gyptis vittata 3 15JAN93 NCE 3 3 Tharyx setigera 2 I 
I 
15JAN93 NCE 3 3 Clymenel/a torquata 1 15JAN93 NCE 3 3 Nuculana acuta 1 15JAN93 NCE 3 3 Phasco/ion strombi 2 15JAN93 NCE 3 3 Erichthonias brasiliensis 17 15JAN93 NCE 3 3 Sphaerosyllis cf. sub/aevis 1 15JAN93 NCE 3 3 Paraonidae Grp. 8 2 Ophiuroidea (unidentified) 2
15JAN93 NCE 3 3 15JAN93 NCE 3 3 Cerapus tubu/aris 1 I 15JAN93 NCE 3 3 Sarsiella texana 1 15JAN93 NCE 3 3 Sphaerosyllis sp. A 2 15JAN93 NCE 3 3 Laeonereis culveri 1I 15JAN93 NCE 3 3 Rictaxis punctostriatus 2 15JAN93 NCE 3 3 Mediomastus ambiseta 4 15JAN93 NCE 3 3 Euclymene sp. 8 2I 15JAN93 NCE 3 3 Glycinde nordmanni 1 
I 56 
I I I I I I 
89 
Appendix Ill: La Quinta · Channel and Corpus Christi Bay species list. Continued. 
I 
I 
15JAN93 NCE 3 10 Rhynchocoel (unidentified) 2 15JAN93 NCE 3 10 Oligochaetes (unidentified) 7 15JAN93 NCE 3 10 Pa/eanotus heteroseta 3 15JAN93 NCE 3 10 Gyptis vittata 3 
I 
15JAN93 NCE 3 10 G/ycera americana 1 15JAN93 NCE 3 10 Diopatra cuprea 1 15JAN93 NCE 3 10 Lumbrineris parvapedata 1 I 
I 
15JAN93 NCE 3 10 Tharyx setigera 4 15JAN93 NCE 3 10 Cossura delta 1 15JAN93 NCE 3 10 Clymenella torquata 1 15JAN93 NCE 3 10 Aligena texasiana 1 15JAN93 NCE 3 10 Listriel/a clymenellae 2 15JAN93 NCE 3 10 Paraonidae Grp. A 3 Ophiuroidea (unidentified) 2
15JAN93 NCE 3 10 15JAN93 NCE 3 10 Sphaerosyllis sp. A 1 I 15JAN93 NCE 3 10 Mediomastus ambiseta 3 
I 36 
I 
I 
09APR93 LQA 1 3 Anthozoa (unidentified) 1 09APR93 LQA 1 3 · Rhynchocoel (unidentified) 1I 09APR93 LQA 1 3 G/ycera americana 4 09APR93 LQA 1 3 G/ycinde so/itaria 3 09APR93 LQA 1 3 Lumbrineris parvapedata 1I 09APR93 LQA 1 3 Streb/ospio benedicti 2 09APR93 LQA 1 3 Paraprionospio pinnata 1 09APR93 LQA 1 3 Minuspio cirrifera 2 09APR93 LQA 1 3 Spiochaetopterus costarum 1 09APR93 LQA 1 3 Axiothella mucosa 5 09APR93 LQA 1 3 Clymenella torquata 1 
I 
09APR93 LQA 1 3 Nuculana acuta 1 09APR93 LQA 1 3 Schistomeringos sp. A 1 09APR93 LQA 1 3 Paraonidae Grp. A 6 
09APR93 LQA 1 3 Sphaerosyllis sp. A 13 09APR93 LQA 1 ' 3 Mediomastus ambiseta 13 
I 56 
I 
I 

90 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
09APR93 LQA 1 10 Rhynchocoel (unidentified) 1 09APR93 LOA 1 10 Oligochaetes (unidentified) 2 09APR93 LOA 1 10 Paleanotus heteroseta 2 09APR93 LOA 1 10 Glycera americana 1 
I 
09APR93 LOA 1 10 Lumbrineris parvapedata 2 09APR93 LOA 1 10 Tharyx setigera 4 09APR93 LQA 1 10 Notomastus latericeus 1I 09APR93 LOA 1 10 Branchioasychis americana 1 09APR93 LOA 1 10 Axiothel/a mucosa 1 09APR93 LQA 1 10 C/ymenella torquata 3 
I 
09APR93 LOA 1 10 Listriella clymenel/ae 1 09APR93 LOA 1 10 Schistomeringos sp. A 21 09APR93 LOA 1 10 Paraonidae Grp. B 16 
09APR93 LOA 1 10 Periploma cf. orbicu/are 1 09APR93 LQA 1 10 Mediomastus ambiseta 9 
I 
66 
I 09APR93 LQA 2 3 Rhynchocoel (unidentified) 1 09APR93 LOA 2 3 Oligochaetes (unidentified) 1 09APR93 LQA 2 3 Gyptis vittata 1I 09APR93 LQA 2 3 G/ycera americana 4 
I 
09APR93 LQA 2 3 Glycinde solitaria 1 09APR93 LQA 2 3 Minuspio cirrifera 1I 09APR93 LQA 2 3 Tharyx setigera 1 09APR93 LQA 2 3 Branchioasychis americana 1 09APR93 LOA 2 3 Axiothel/a mucosa 3 09APR93 LQA 2 3 Clymenella torquata 1 
I 
I 
09APR93 LOA 2 3 Nucu/ana acuta 1 09APR93 LQA 2 3 Tellina sp. 1 09APR93 LQA 2 3 Cyclaspis varians 1 09APR93 LQA 2 3 Phoronis architecta 1 09APR93 LQA 2 3 Paraonidae Grp. A 4 09APR93 LQA 2 3 Ophiuroidea (unidentified) 1 09APR93 LQA 2 3 Sphaerosyl/is sp. A 6 09APR93 LOA 2 3 Turbellaria (unidentified) 1I 09APR93 LQA 2 3 Periploma cf. orbiculare 1 09APR93 LQA 2 3 Mediomastus ambiseta 8 
I 40 
I 
91 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
09APR93 LOA 2 10 Oligochaetes (unidentified) 1 09APR93 LOA 2 10 Gyptis vittata 1 09APR93 LOA 2 10 Glycera americana 1 09APR93 LOA 2 10 Diopatra cuprea 1 
I 
09APR93 LOA 2 10 Lumbrineris parvapedata 3 09APR93 LOA 2 10 Schistomeringos rudolphi 1 09APR93 LOA 2 10 Tharyx setigera 14 
I 
09APR93 LOA 2 10 Cossura delta 1 09APR93 LOA 2 10 Clymenella torquata 1 09APR93 LOA 2 10 Schistomeringos sp. A 1 
I 
09APR93 LOA 2 10 Paraonidae Grp. A 1 09APR93 LOA 2 10 Paraonidae Grp. B 3 09APR93 LOA 2 10 Asychis elongata 1 
09APR93 LOA 2 10 Turbellaria (unidentified) 2 09APR93 LOA 2 10 Mediomastus ambiseta 4 
I 36 
I 09APR93 LOA 3 3 Anthozoa (unidentified) 1 09APR93 LOA 3 3 Rhynchocoel (unidentified) 2 09APR93 LOA 3 3 Oligochaetes (unidentified) 4I 09APR93 LOA 3 3 Gyptis vittata 1 
I 
09APR93 LOA 3 3 Glycera americana 5 09APR93 LOA 3 3 Lumbrineris parvapedata 3I 09APR93 LOA 3 3 Tharyx setigera 4 09APR93 LOA 3 3 Notomastus Jatericeus 2 09APR93 LOA 3 3 Axiothel/a mucosa 4 09APR93 LOA 3 3 Nucu/ana acuta 2 
I 
I 
09APR93 LOA 3 3 Macoma tenta 1 09APR93 LOA 3 3 Abra aequalis 1 09APR93 LOA 3 3 Ampe/isca abdita 1 09APR93 LOA 3 3 Listriella clymenellae 1 09APR93 LOA 3 3 Phoronis architecta 1 
I 
09APR93 LOA 3 3 Sphaerosyl/is cf. sublaevis 5 09APR93 LOA 3 3 Paraonidae Grp. A 4 09APR93 LOA 3 3 Paraonidae Grp. B 3 
09APR93 LOA 3 3 Armandia maculata 1 09APR93 LOA 3 3 Mediomastus ambiseta 15 
I 61 
I 
92 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
09APR93 LQA 3 10 Gyptis vittata 1 09APR93 LQA 3 10 Schistomeringos rudolphi 1 
I 
I 
09APR93 LQA 3 10 Tharyx setigera 23 09APR93 LQA 3 10 Clymenella torquata 3 09APR93 LQA 3 10 Aligena texasiana 1 09APR93 LQA 3 10 Nereidae (unidentified) 1 09APR93 LQA 3 10 Asychis elongata 1 
09APR93 LQA 3 10 Mediomastus ambiseta 6 
I 
37 
I 
09APR93 LQB 1 3 Rhynchocoel (unidentified) 2 09APR93 LQB 1 3 Oligochaetes (unidentified) 2 I 
I 
09APR93 LQB 1 3 Eumida sanguinea 5 09APR93 LQB 1 3 Gyptis vittata 1 09APR93 LQB 1 3 G/ycera americana 2 09APR93 LQB 1 3 Diopatra cuprea 1 09APR93 LQB 1 3 Spiophanes bombyx 1 09APR93 LQB 1 3 Oxyurostylis sa/inoi 1 09APR93 LQB 1 3 Listriella clymenel/ae 2 09APR93 LQB 1 3 Phasco/ion strombi 1 I 09APR93 LQB 1 3 Phoronis architecta 1 
09APR93 LQB 1 3 Sphaerosyllis cf. sublaevis 1 09APR93 LQB 1 3 Paraonidae Grp. A 8I 09APR93 LQB 1 3 Paraonidae Grp. B 5 
II 
09APR93 LQB 1 3 Armandia maculata 1 09APR93 LQB 1 3 Sphaerosyllis sp. A 4 09APR93 LQB 1 3 Mediomastus ambiseta 10 
I 
48 
I 
I 
I 

I 
93 
I 

I Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species n 
09APR93 LQB 1 10 Oligochaetes (unidentified) 7 
I 
I 09APR93 LQB 1 10 Spiophanes bombyx 1 09APR93 LQB 1 10 Tharyx setigera 3 09APR93 LQB 1 10 Clymenella torquata 3 
I 
09APR93 LQB 1 10 Phascolion strombi 1 09APR93 LQB 1 10 Phoronis architecta 1 09APR93 LQB 1 10 Schistomeringos sp. A 4 
I 
09APR93 LQB 1 10 Paraonidae Grp. A 5 09APR93 LQB 1 10 Paraonidae Grp. B 3 09APR93 LQB 1 10 Mediomastus ambiseta 4 
32 
I 
09APR93 LOB 2 3 Oligochaetes (unidentified) 5 09APR93 LQB 2 3 G/ycera americana 3 09APR93 LQB 2 3 Spiophanes bombyx 1I 
09APR93 LQB 2 3 Axiothella mucosa 2 09APR93 LOB 2 3 C/ymenella torquata 1I 09APR93 LQB 2 3 Pectinaria gou/dii 1 09APR93 LOB 2 3 Syllidae (unidentified) 2 09APR93 LQB 2 3 Sphaerosyllis cf. sublaevis 4I 09APR93 LQB 2 3 Paraonidae Grp. A 6 09APR93 LQB 2 3 Paraonidae Grp. B 3 09APR93 LQB 2 3 Sphaerosyllis sp. A 2I 09APR93 LQB 2 3 Turbellaria (unidentified) 1 09APR93 LQB 2 3 Mediomastus ambiseta 18 
I 49 
09APR93 LQB 2 10 Oligochaetes (unidentified) 3 
I 
I 09APR93 LQB 2 10 G/ycera americana 1 09APR93 LQB 2 10 Spiophanes bombyx 1 09APR93 LQB 2 10 Listriella clymenellae 2 
I 
09APR93 LQB 2 10 Paraonidae Grp. A 3 09APR93 LOB 2 10 Paraonidae Grp. B 5 09APR93 LQB 2 10 Mediomastus ambiseta 1 
16 
I 
I 

94 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
09APR93 LQB 3 3 Anthozoa (unidentified) 3
I 	09APR93 LQB 3 3 Oligochaetes (unidentified) 8 09APR93 LQB 3 3 Glycera americana 3 09APR93 LQB 3 3 Schistomeringos rudolphi 1
I 	LQB 3 3 Po/ydora caulleryi 3 
I 
09APR93 09APR93 LQB 3 3 Minuspio cirrifera 1 09APR93 LQB 3 3 Hap/oscoloplos foliosus 1 
I 
09APR93 LQB 3 3 Crepidula fornicata 1 09APR93 LQB 3 3 Oxyurostylis salinoi 1 09APR93 LQB 3 3 Erichthonias brasi/iensis 1 
I 
09APR93 LQB 3 3 Paraonidae Grp. A 9 09APR93 LQB 3 3 Paraonidae Grp. B 3 09APR93 LQB 3 3 Microprotopus spp. 1 
I 
09APR93 LQB 3 3 Turbellaria (unidentified) 1 09APR93 LQB 3 3 Mollusca (unidentified) 1 09APR93 LQB 3 3 Mediomastus ambiseta 8 
46 
I 
I 
09APR93 LQB 3 10 Oligochaetes (unidentified) 8 09APR93 LQB 3 10 Polydora caulleryi 8 09APR93 LQB 3 10 Spiophanes bombyx 1 
09APR93 LQB 3 10 Tharyx setigera 1 09APR93 LQB 3 10 Clymenella torquata 1 I 09APR93 LQB 3 10 Schistomeringos sp. A 11 09APR93 LQB 3 10 Paraonidae Grp. A 3 09APR93 LQB 3 10 Paraonidae Grp. B 16I 09APR93 LQB 3 10 Mediomastus ambiseta 4 
I 	53 
I 
I 
I 

I 
95 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
09APR93 LQC 1 3 Rhynchocoel (unidentified) 2 09APR93 LQC 1 3 Anaitides erythrophyllus 1 09APR93 LQC 1 3 Nereis sp. A 2 09APR93 LQC 1 3 G/ycera americana 3 
I 
09APR93 LQC 1 3 Diopatra cuprea 2 09APR93 LQC 1 3 Schistomeringos rudolphi 1 09APR93 LQC 1 3 Spiophanes bombyx 3I 09APR93 LQC 1 3 Paraprionospio pinnata 2 09APR93 LQC 1 3 Minuspio cirrifera. 2 09APR93 LQC 1 3 Axiothella mucosa 7 
I 
09APR93 LQC 1 3 Owenia fusifonnis 1 09APR93 LQC 1 3 lsolda pulchella 1 09APR93 LQC 1 3 Crepidula fomicata 1 I 
09APR93 LQC 1 3 Nuculana acuta 1 09APR93 LQC 1 3 Parvilucina multilineata 1 09APR93 LQC 1 3 Aligena texasiana 1 09APR93 LQC 1 3 Te/Jina texana 1 09APR93 LQC 1 3 Cyclaspis varians 1 I 09APR93 LQC 1 3 Euceramus prae/ongus 1 
09APR93 LQC 1 3 Sphaerosyllis cf. sublaevis 5 09APR93 LQC 1 3 Paraonidae Grp. A 2I 09APR93 LQC 1 3 Ophiuroidea (unidentified) 1 09APR93 LQC 1 3 Sarsiella texana 4 09APR93 LQC 1 3 Sphaerosyllis sp. A 1I 09APR93 LQC 1 3 Ascidiacea 4 09APR93 LQC 1 3 Chione cancellata 1 09APR93 LQC 1 3 Mollusca (unidentified) 2I 09APR93 LQC 1 3 Mediomastus ambiseta 13 
I 
67 
I I I I 
96 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
09APR93 LQC 1 10 Oligochaetes (unidentified) 5 
I 
09APR93 LQC 1 10 Dorvil/ea rubra 6 09APR93 LQC 1 10 Tharyx setigera 2 09APR93 LQC 1 10 Axiothella mucosa 1 I 
I 
09APR93 LQC 1 10 Clymenella torquata 4 09APR93 LQC 1 10 Jsolda pulchel/a 1 09APR93 LQC 1 10 Aligena texasiana 2 09APR93 LQC 1 10 Phoronis architecta 1 09APR93 LQC 1 10 Paraonidae Grp. A 1 09APR93 LQC 1 10 Paraonidae Grp. B 3 09APR93 LQC 1 10 Mollusca (unidentified) 2 09APR93 LQC 1 10 Mediomastus ambiseta 3 
I 31 
I 09APR93 LQC 2 3 Oligochaetes (unidentified) 1 09APR93 LQC 2 3 Eunoe cf. nodu/osa 2 09APR93 LQC 2 3 Eteone heteropoda 2I 09APR93 LQC 2 3 G/ycera americana 2 
I 
09APR93 LQC 2 3 Diopatra cuprea 1 09APR93 LQC 2 3 Spiophanes bombyx 1I 09APR93 LQC 2 3 Paraprionospio pinnata 1 09APR93 LQC 2 3 Axiothella mucosa 3 09APR93 LQC 2 3 Clymenella torquata 1I 09APR93 LQC 2 3 Vitrine/la floridana 1 09APR93 LQC 2 3 Nuculana acuta 1 09APR93 LQC 2 3 Te/Jina texana 1I 09APR93 LQC 2 3 Oxyurostylis salinoi 2 09APR93 LQC 2 3 Phasco/ion strombi 1 09APR93 LQC 2 3 Schizocardium sp. 1 
I 
09APR93 LQC 2 3 Erichthonias brasi/iensis 1 09APR93 LQC 2 3 Sphaerosyl/is cf. sublaevis 6 09APR93 LQC 2 3 Ophiuroidea (unidentified) 2 
I 
09APR93 LQC 2 3 Munna hayesi 1 09APR93 LQC 2 3 Syllis sp. 1 09APR93 LQC 2 3 Mollusca (unidentified) 1 
09APR93 LQC 2 3 Mediomastus ambiseta 10 
I 
43 
I 

97 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
09APR93 LQC 2 10 Rhynchocoel (unidentified) 1 
I 
I 
09APR93 LQC 2 10 Oligochaetes (unidentified) 5 09APR93 LQC 2 10 Paleanotus heteroseta 6 09APR93 LQC 2 10 Gyptis vittata 4 09APR93 LQC 2 10 Dorvil/ea rubra 4 09APR93 LQC 2 10 Spiophanes bombyx 3 09APR93 LQC 2 10 Tharyx setigera 1 09APR93 LQC 2 10 Axiothel/a mucosa 2 09APR93 LQC 2 10 Clymenella torquata 2 I 09APR93 LQC 2 10 A/igena texasiana 4 09APR93 LQC 2 10 Tellina texana 3 09APR93 LQC 2 10 Listriella clymenellae 2 09APR93 LQC 2 10 Paraonidae Grp. A 1
I 7
09APR93 LQC 2 10 Paraonidae Grp. B 09APR93 LQC 2 10 Caecum johnsoni 4I 09APR93 LQC 2 10 Mediomastus ambiseta 4 
I 53 
I 
09APR93 LQC 3 3 Rhynchocoel (unidentified) 2 09APR93 LQC 3 3 Oligochaetes (unidentified) 1I 09APR93 LQC 3 3 Anaitides erythrophyllus 1 09APR93 LQC 3 3 Nephtys magellanica 1 09APR93 LQC 3 3 G/ycera americana 5I 09APR93 LQC 3 3 Spiophanes bombyx 4 09APR93 LQC 3 3 Minuspio cirrifera 1 09APR93 LQC 3 3 Tharyx setigera 1I 09APR93 LQC 3 3 Axiothella mucosa 5 09APR93 LQC 3 3 Anadara transversa 2 09APR93 LQC 3 3 Mysel/a planulata 1 
I 
09APR93 LQC 3 3 Tellina texana 1 09APR93 LQC 3 3 Oxyurostylis sa/inoi 1 09APR93 LQC 3 3 Ampelisca abdita 1 I 
09APR93 LQC 3 3 Sphaerosy/lis cf. sub/aevis 2 09APR93 LQC 3 3 Paraonidae Grp. A 2 09APR93 LQC 3 3 Paraonidae Grp. B 5 09APR93 LQC 3 3 Sarsiella texana 1 09APR93 LQC 3 3 Periploma cf. orbiculare 1 I 09APR93 LQC 3 3 Mediomastus ambiseta 12 
I 50 98 
I 
09APR93 LQC 3 10 Rhynchocoel (unidentified) 1 
I 
09APR93 LQC 3 10 Anaitides erythrophyllus 1 09APR93 LQC 3 10 Gyptis vittata 1 09APR93 LQC 3 10 Clymenella torquata 2 I 
09APR93 LQC 3 10 A/igena texasiana 1 09APR93 LQC 3 10 Paraonidae Grp. A 1 09APR93 LQC 3 10 Paraonidae Grp. B 4 09APR93 LQC 3 10 Mediomastus ambiseta 2 
I 
13 
I 
09APR93 NCC 1 3 Paleanotus heteroseta 2 09APR93 NCC 1 3 Gyptis vittata 2 
09APR93 NCC 1 3 Glycinde solitaria 1 09APR93 NCC 1 3 Lumbrineris parvapedata 1I 09APR93 NCC 1 3 Schistomeringos rudolphi 1 09APR93 NCC 1 3 Paraprionospio pinnata 1 09APR93 NCC 1 3 Tharyx setigera 1I 09APR93 NCC 1 3 Cossura delta 1 
I 
09APR93 NCC 1 3 Lyonsia hyafina floridana 1 09APR93 NCC 1 3 Cyclaspis varians 2I 09APR93 NCC 1 3 Sphaerosyllis sp. A 1 09APR93 NCC 1 3 Asychis elongata 1 09APR93 NCC 1 3 Mediomastus ambiseta -3 
18 
I 
I 09APR93 NCC 1 10 Lumbrineris parvapedata 4 09APR93 NCC 1 10 Tharyx setigera 1 09APR93 NCC 1 10 Cossura delta 4 
09APR93 NCC 1 10 Sphaerosyllis sp. A 1 09APR93 NCC 1 10 Mediomastus ambiseta 2 
I 12 
I 
I 
I 

99 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
STA REP SEC Species 	n
I 
Date Rhynchocoel (unidentified) 2
09APR93 NCC 	2 3 2 3 Oligochaetes (unidentified) 2
09APR93 NCC 
2 Gyptis vittata 

I 	2
09APR93 NCC 3 Lumbrineris parvapedata 1
09APR93 NCC 2 3I NCC 2 3 Spiochaetopterus costarum 2 
I 
09APR93 09APR93 NCC 2 3 Tharyx setigera 2 Cossura delta 2
09APR93 NCC 	2 3 
NCC 2 3 Branchioasychis americana 1 
I 
09APR93 09APR93 NCC 2 3 Nuculana acuta 1 09APR93 NCC 2 3 Caprellid 2 
09APR93 NCC 	2 3 Sphaerosyllis sp. A 1 2 Mediomastus ambiseta 5
09APR93 NCC 	3 
I 	23 
09APR93 NCC 	2 10 Rhynchocoel (unidentified) 1
I 
09APR93 NCC 2 10 Oligochaetes (unidentified) 1 09APR93 NCC 2 10 Lumbrineris parvapedata 1 09APR93 NCC 2 10 Tharyx setigera 3I 
09APR93 NCC 2 10 Cossura delta 2 09APR93 NCC 2 10 Mediomastus ambiseta 2 
I 	10 
I 09APR93 NCC 3 3 Glycinde so/itaria 	3 
I 
09APR93 NCC 3 3 Lumbrineris parvapedata 1 09APR93 NCC 3 3 Paraprionospio pinnata 3I 09APR93 NCC 3 3 Spiochaetopterus costarum 1 09APR93 NCC 3 3 Tharyx setigera 2 09APR93 NCC 3 3 Cossura delta 2I 09APR93 NCC 3 3 Oxyurostylis salinoi 1 09APR93 NCC 3 3 Ampe/isca verrilli 1 09APR93 NCC 3 3 Ophiuroidea (unidentified) 1 09APR93 NCC 3 3 Sphaerosyllis sp. A 3 
09APR93 NCC 	3 3 .. Mediomastus ambiseta 6 
I 	24 
I 

Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
09APR93 NCC 3 10 Rhynchocoel (unidentified) 1 09APR93 NCC 3 10 Paleanotus heteroseta 1 09APR93 NCC 3 10 Lumbrineris parvapedata 1 09APR93 NCC 3 10 Tharyx setigera 2 
I 
09APR93 NCC 3 10 Haploscoloplos fo/iosus 1 09APR93 NCC 3 10 Cossura delta 1 09APR93 NCC 3 10 Ophiuroidea (unidentified) 1 
09APR93 NCC 3 10 Mediomastus ambiseta 2 09APR93 NCC 3 10 Synsyllis /ongigu/aris 2 
I 12 
I 
09APR93 NCO 1 3 Rhynchocoel (unidentified) 1 3 Oligochaetes (unidentified) 44
09APR93 NCO 1 09APR93 NCO 1 3 Paranaitis speciosa 1 I 09APR93 NCO 1 3 Hap/oscolop/os foliosus 1 09APR93 NCO 1 3 Owenia fusiformis 1 09APR93 NCO 1 3 Cyclaspis varians 1I 09APR93 NCO 1 3 Phascolion strombi 1 
I 50 
I 
09APR93 NCO 1 10 Oligochaetes (unidentified) 1 09APR93 NCO 1 10 Gyptis vittata 1I 09APR93 NCO 1 10 Polydora socialis 1 09APR93 NCO 1 10 Sphaerosyl/is sp. A 1 09APR93 NCO 1 10 Synsyllis longigularis 1 
5 
I I I I I 
101 
I 
I 	Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species 	n 
I 
09APR93 NCD 2 3 Anthozoa (unidentified) 1 
I 
09APR93 NCD 2 3 Rhynchocoel (unidentified) 1 09APR93 NCD 2 3 Oligochaetes (unidentified) 38 09APR93 NCO 2 3 Gyptis vittata 2 I 
I 
09APR93 NCO 2 3 G/ycinde solitaria 1 09APR93 NCO 2 3 Aligena texasiana 1 09APR93 NCO 2 3 Oxyurostylis salinoi 2 09APR93 NCO 2 3 Acteocina canaliculata 2 09APR93 NCO 2 3 Sphaerosyl/is cf. sublaevis 1 09APR93 NCO 2 3 Armandia maculata 1 09APR93 NCO 2 3 Sphaerosyllis sp. A 2 
I 	52 
09APR93 NCO 2 10 Oligochaetes (unidentified) 1I 09APR93 NCO 2 10 Gyptis vittata 1 09APR93 NCO 2 10 Paraprionospio pinnata 1 t_> 09APR93 NCO 2 10 Synsyllis /ongigularis 1 ,,' 
"Jii . 
.~·
I 	4 
:~·\. 
" 
I 	09APR93 NCO 3 3 Oligochaetes (unidentified) 86 09APR93 NCO 3 3 Eteone /actea 1 09APR93 NCD 3 3 Glycinde solitaria 1 
I 
I 09APR93 NCO 3 3 Apoprionospio pygmaea 1 09APR93 NCO 3 3 Oxyurosty/is salinoi 3 09APR93 NCO 3 3 Mercenaria campechiensis 1 
I 
09APR93 NCD 3 3 Sarsiella texana 2 09APR93 NCD 3 3 Sphaerosyllis sp. A 1 09APR93 NCO 3 3 Periploma cf. orbicu/are 1 
09APR93 NCO 3 3 Synsyllis /ongigularis 	1 
I 
98 
I 
09APR93 NCO 3 10 Oligochaetes (unidentified) 2 09APR93 NCO 3 10 Gyptis vittata 1 09APR93 NCD 3 10 Glycera americana 1 
I 
4 
I 

102 
Appendix Ill: 	La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
NCE 1 3 Oligochaetes (unidentified) 109APR93 
I 
09APR93 NCE 1 3 Eteone heteropoda 1 09APR93 NCE 1 3 Glycera americana 1 09APR93 NCE 1 3 Diopatra cuprea 3 
09APR93 	NCE 1 3 Lumbrineris parvapedata 4 NCE 1 3 Streblospio benedicti 1 
I 
09APR93 09APR93 NCE 1 3 Spiochaetopterus costarum 1 
1 	Anadara transversa 1 
I 
09APR93 NCE 3 09APR93 NCE 1 3 Aligena texasiana 2 09APR93 NCE 1 3 Caprellid 19 I 
09APR93 NCE 1 3 Erichthonias brasi/iensis 11 09APR93 NCE 1 3 Amphilocus sp. 1 09APR93 NCE 1 3 Elasmopus sp. 1 3 Paraonidae Grp. A 2 
I 
09APR93 NCE 1 09APR93 NCE 1 3 Sphaerosyllis sp. A 16 09APR93 NCE 1 3 Ascidiacea 1 
09APR93 NCE 1 3 Mediomastus ambiseta 3 09APR93 NCE 1 3 Euclymene sp. B 6 
I 
75 
I 09APR93 NCE 1 10 Paleanotus heteroseta 1 
I 
09APR93 NCE 1 10 Gyptis vittata 2 09APR93 NCE 1 10 Nephtys magellanica 1I 09APR93 NCE 1 10 Lumbrineris parvapedata 1 09APR93 NCE 1 10 Schistomeringos rudolphi 3 09APR93 NCE 1 10 Tharyx setigera 4I 09APR93 NCE 1 10 C/ymenella torquata 2 09APR93 NCE 1 10 Aligena texasiana 1 09APR93 NCE 1 10 Paraonidae Grp. B 2 09APR93 NCE 1 10 Mediomastus ambiseta 2 09APR93 NCE 1 10 Euclymene sp. B 1 
I 	20 
I 
I 
I 

103 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
09APR93 NCE 2 3 Rhynchocoel (unidentified) 2I 09APR93 NCE 2 3 Oligochaetes (unidentified) 1 
I 
I 
09APR93 NCE 2 3 Gyptis vittata 1 09APR93 NCE 2 3 G/ycera americana 1 09APR93 NCE 2 3 Aligena texasiana 1 09APR93 NCE 2 3 Macoma tenta 1 09APR93 NCE 2 3 Ophiuroidea (unidentified) 1 
I 
09APR93 NCE 2 3 Microprotopus spp. 1 09APR93 NCE 2 3 Sphaerosyllis sp. A 3 09APR93 NCE 2 3 Mediomastus ambiseta 8 
09APR93 NCE 2 3 Euc/ymene sp. 8 1 
I 
21 
I 
09APR93 NCE 2 10 Anthozoa (unidentified) 1 09APR93 NCE 2 10 Eteone /actea 1 09APR93 NCE 2 10 Gyptis vittata 1 09APR93 NCE 2 10 Lumbrineris parvapedata 1 I 09APR93 NCE 2 10 Schistomeringos rudolphi 1 09APR93 NCE 2 10 Polydora caul/eryi 10 09APR93 NCE 2 10 Tharyx setigera 5I 09APR93 NCE 2 10 Haploscolop/os foliosus 7 09APR93 NCE 2 10 Clymenella torquata 1 09APR93 NCE 2 10 Vitrine/la f/oridana 1I 09APR93 NCE 2 10 Listriella clymenellae 1 
I 
09APR93 NCE 2 10 Paraonidae Grp. 8 3 09APR93 NCE 2 10 Ophiuroidea (unidentified) 1 09APR93 NCE 2 10 Laeonereis culveri 1 
09APR93 NCE 2 10 Euclymene sp. B 1 
I 36 
I I I I 
104 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
09APR93 NCE 3 3 Rhynchocoel (unidentified) 1I NCE 3 3 Oligochaetes (unidentified) 1 
I 
09APR93 09APR93 NCE 3 3 Paleanotus heteroseta 1 09APR93 NCE 3 3 Gyptis vittata 1 
I 
09APR93 NCE 3 3 Glycinde solitaria 2 09APR93 NCE 3 3 Schistomeringos rudolphi 1 09APR93 NCE 3 3 Paraprionospio pinnata 1 
I 
09APR93 NCE 3 3 Tharyx setigera 2 09APR93 NCE 3 3 Aligena texasiana 2 09APR93 NCE 3 3 Macoma tenta 1 
I 
09APR93 NCE 3 3 Paraonidae Grp. B 2 09APR93 NCE 3 3 Microprotopus spp. 1 09APR93 NCE 3 3 Sphaerosyllis sp. A 4 I 
09APR93 NCE 3 3 Laeonereis culveri 1 09APR93 NCE 3 3 Periploma cf. orbiculare 1 09APR93 NCE 3 3 Mediomastus ambiseta 5 09APR93 NCE 3 3 Euc/ymene sp. B 3 
I 30 
09APR93 NCE 3 10 Rhynchocoel (unidentified) 1I 09APR93 NCE 3 10 Oligochaetes (unidentified) 4 
I 
09APR93 NCE 3 10 Eteone lactea 1 09APR93 NCE 3 10 Gyptis vittata 3I 09APR93 NCE 3 10 Schistomeringos rudolphi 7 09APR93 NCE 3 10 Po/ydora caulleryi 1 09APR93 NCE 3 10 Tharyx setigera 5I 09APR93 NCE 3 10 Clymenella torquata 2 09APR93 NCE 3 10 lso/da pulchella 1 09APR93 NCE 3 10 Aligena texasiana 1I 09APR93 NCE 3 10 Listriella clymenellae 2 09APR93 NCE 3 10 Paraonidae Grp. B 3 09APR93 NCE 3 10 Mediomastus ambiseta 3 
34 
I 
I 
I 

105 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
10JUL93 LQA 1 3 Oligochaetes (unidentified) 8 

I 
10JUL93 LQA 1 3 Glycera americana 1 10JUL93 LQA 1 3 Spio setosa 1 10JUL93 LQA 1 3 Paraprionospio pinnata 2 
I 
10JUL93 LQA 1 3 Tharyx setigera 1 10JUL93 LQA 1 3 Axiothella mucosa 1 10JUL93 LQA 1 3 C/ymenella torquata 1 I 
10JUL93 LQA 1 3 Listriel/a clymenellae 3 10JUL93 LQA 1 3 Paraonidae Grp. A 6 10JUL93 LQA 1 3 Sphaerosyllis sp. A 3 10JUL93 LQA 1 3 Laeonereis culveri 1 10JUL93 LQA 1 3 Mediomastus ambiseta 8 
I 
36 
I 10JUL93 LQA 1 10 Anthozoa (unidentified) 1 10JUL93 LQA 1 10 Oligochaetes (unidentified) 5 10JUL93 LQA 1 10 Pa/eanotus heteroseta 8I 10JUL93 LQA 1 10 Gyptis vittata 4 10JUL93 LQA 1 10 Lumbrineris parvapedata 2 10JUL93 LQA 1 10 Spiophanes bombyx 1I 10JUL93 LQA 1 10 Minuspio cirrifera 2 10JUL93 LQA 1 10 Spiochaetopterus costarum 1 10JUL93 LQA 1 10 Tharyx setigera 7I 10JUL93 LQA 1 10 Axiothel/a mucosa 1 
I 
I 
10JUL93 LQA 1 10 C/ymenella torquata 7 10JUL93 LQA 1 10 Mysella planulata 1 10JUL93 LQA 1 10 Aligena texasiana 4 10JUL93 LQA 1 10 Abra aequalis 1 10JUL93 LQA 1 10 Listriella clymenellae 1I 10JUL93 LQA 1 10 Paraonidae Grp. B 14 10JUL93 LQA 1 10 Periploma cf. orbiculare 3 10JUL93 LQA 1 10 Mediomastus ambiseta 1 
64 
I 
I 
I 

106 
I 
I 
I Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species n 
I 
10JUL93 LQA 2 3 Paleanotus heteroseta 2 
I 
10JUL93 LQA 2 3 G/ycera americana 1 10JUL93 LQA 2 3 Axiothel/a mucosa 1 10JUL93 LQA 2 3 Ampe/isca verrilli 1 
I 
I 
10JUL93 LQA 2 3 Listriella c/ymenel/ae 2 
10JUL93 LQA 2 3 Lucina pectinata 1 
10JUL93 LQA 2 3 Paraonidae Grp. A 7 
10JUL93 LQA 2 3 Sphaerosyl/is sp. A 2 
10JUL93 LQA 2 3 Periploma cf. orbicu/are 2 
10JUL93 LQA 2 3 Mediomastus ambiseta 3 

I 22 
10JUL93 LQA 2 10 Rhynchocoel (unidentified) 1 10JUL93 LQA 2 10 Oligochaetes (unidentified) 2I 10JUL93 LQA 2 10 Pa/eanotus heteroseta 3 10JUL93 LQA 2 10 Spiophanes bombyx 1 
" 
10JUL93 LQA 2 10 Tharyx setigera 20 
~~
10JUL93 LQA 2 10 Branchioasychis americana 1 
...Ł"
I ,,,
10JUL93 LQA 2 10 Axiothella mucosa 3 r 10JUL93 LQA 2 10 Clymenella torquata 2 
I 
I 10JUL93 LQA 2 10 Listriella clymenellae 1 10JUL93 LQA 2 10 Paraonidae Grp. A 2 10JUL93 LQA 2 10 Mediomastus ambiseta 1 
37 
I 
I 10JUL93 LQA 3 3 Paleanotus heteroseta 1 10JUL93 LQA 3 3 Podarke obscura 1 10JUL93 LQA 3 3 Axiothella mucosa 1 
I 
10JUL93 LQA 3 3 Clymenella torquata 1 10JUL93 LQA 3 3 Ampelisca verrilli 1 10JUL93 LQA 3 3 Listriella clymenellae 3 
I 
10JUL93 LQA 3 3 Paraonidae Grp. A 5 10JUL93 LQA 3 3 Periploma cf. orbiculare 1 10JUL93 LQA 3 3 Mediomastus ambiseta 2 
16 
I 
I 

107 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
10JUL93 LQA 3 10 Anthozoa (unidentified) 2 10JUL93 LQA 3 10 Rhynchocoel (unidentified) 1 10JUL93 LOA 3 10 Paleanotus heteroseta 18 10JUL93 LQA 3 10 Gyptis vittata 1 I 
I 
10JUL93 LQA 3 10 G/ycera americana 1 10JUL93 LQA 3 10 Lumbrineris parvapedata 4 10JUL93 LQA 3 10 Schistomeringos rudolphi 2 10JUL93 LQA 3 10 Minuspio cirrifera 1 10JUL93 LQA 3 10 Tharyx setigera 11 10JUL93 LQA 3 10 Branchioasychis americana 1 LQA 3 10 Axiothel/a mucosa 1 
I 
10JUL93 10JUL93 LQA 3 10 C/ymenella torquata 5 10JUL93 LQA 3 10 Vitrine/la floridana 1 Aligena texasiana 1
10JUL93 LQA 3 10 10JUL93 LQA 3 10 Listriella clymenel/ae 5 I 10JUL93 LQA 3 10 Branchiostoma caribaeum 1 10JUL93 LQA 3 10 Schistomeringos sp. A 7 10JUL93 LQA 3 10 Paraonidae Grp. B 7I 10JUL93 LQA 3 10 Periploma cf. orbicu/are 1 10JUL93 LQA 3 10 Caecum johnsoni 5 10JUL93 LQA 3 10 Mediomastus ambiseta 5
I 
81 
I 
I 
I 10JUL93 LQB 1 3 Anthozoa (unidentified) 3 10JUL93 LQB 1 3 Oligochaetes (unidentified) 1 10JUL93 LQB 1 3 Podarke obscura 1 10JUL93 LOB 1 3 Axiothella mucosa 2 10JUL93 LQB 1 3 Nuculana acuta 1 10JUL93 LQB 1 3 Schistomeringos sp. A 3 
I 
10JUL93 LQB 1 3 Paraonidae Grp. A 5 10JUL93 LQB 1 3 Ophiuroidea (unidentified) 1 10JUL93 LOB 1 3 Sphaerosyllis sp. A 1 
10JUL93 LQB 1 3 Mediomastus ambiseta 10 10JUL93 LQB 1 3 Synsyllis /ongigularis 9 
I 37 
I 
I 

108 
I-.____ 
I 
I Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
Date STA REP SEC Species 	n 
10JUL93 LOB 1 10 Oligochaetes (unidentified) 7
I 	10 Pa/eanotus heteroseta 1
10JUL93 LOB 1 10JUL93 LOB 1 10 Podarke obscura 1 10JUL93 LOB 1 10 Schistomeringos rudolphi 1I 10 Clymenella torquata 1
10JUL93 LOB 1 10JUL93 LOB 1 10 Listriella clymenellae 1 10JUL93 LOB 1 10 Schistomeringos sp. A 1I 10 Paraonidae Grp. A 8 
I 
10JUL93 LOB 1 10JUL93 LOB 1 10 Ophiuroidea (unidentified) 1 10JUL93 LOB 1 10 Sphaerosyllis sp. A 2 
10JUL93 LOB 1 10 Mediomastus ambiseta 3 10JUL93 LOB 1 10 Synsyllis /ongigularis 2 
I 	29 
10JUL93 LOB 2 3 Rhynchocoel (unidentified) 1
I 
10JUL93 LOB 2 3 Paraonidae Grp. A 4 10JUL93 LOB 2 3 Paraonidae Grp. B 2 I 10JUL93 LOB 2 3 Sarsiel/a texana 1 10JUL93 LOB 2 3 Mediomastus ambiseta 12 
I 
I 20 10JUL93 LOB 2 10 Oligochaetes (unidentified) 3
I 	10JUL93 LOB 2 10 Schistomeringos sp. A 2 10JUL93 LOB 2 10 Paraonidae Grp. A 4 10JUL93 LOB 2 10 Paraonidae Grp. B 2 
I 
I 10JUL93 LOB 2 10 Sphaerosyllis sp. A 1 10JUL93 LOB 2 10 Mediomastus ambiseta 2 10JUL93 LOB 2 10 Synsyllis /ongigularis 1 
15 
I I I I 
109 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
10JUL93 LQB 3 3 Oligochaetes (unidentified) 2I 10JUL93 LQB 3 3 Tharyx setigera 1 
I 
I 
10JUL93 LQB 3 3 Axiothella mucosa 1 10JUL93 LQB 3 3 Clymenella torquata 1 10JUL93 LQB 3 3 Parvilucina multilineata 1 10JUL93 LQB 3 3 Ampe/isca verrilli 2 10JUL93 LQB 3 3 Listriella c/ymenellae 1 
I 
10JUL93 LQB 3 3 Paraonidae Grp. A 4 10JUL93 LQB 3 3 Sarsiella texana 2 10JUL93 LQB 3 3 Mediomastus ambiseta 11 
26 
I 
I 10JUL93 LQB 3 10 Rhynchocoel (unidentified) 1 10JUL93 LQB 3 10 Oligochaetes (unidentified) 6 10JUL93 LQB 3 10 Paleanotus heteroseta 2 10JUL93 LQB 3 10 Gyptis vittata 3 10JUL93 LQB 3 10 G/ycera americana 1 I 10JUL93 LQB 3 10 Diopatra cuprea 1 10JUL93 LQB 3 10 Spiophanes bombyx 1 10JUL93 LQB 3 10 Mage/ona pettiboneae 1I 10JUL93 LQB 3 10 Tharyx setigera 3 10JUL93 LQB 3 10 Axiothella mucosa 1 10JUL93 LQB 3 10 Clymenella torquata 4I 10JUL93 LQB 3 10 Aligena texasiana 2 
I 
10JUL93 LQB 3 10 Listriella c/ymenellae 3 10JUL93 LQB 3 10 Paraonidae Grp. A 6I 10JUL93 LQB 3 10 Paraonidae Grp. 8 11 10JUL93 LQB 3 10 Sphaerosyllis sp. A 3 10JUL93 LQB 3 10 Mediomastus ambiseta 2 10JUL93 LQB 3 10 Synsyl/is longigularis 9 
I 
60 
11 
I 

I 

110 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
10JUL93 LQC 1 3 Rhynchocoel (unidentified) 1 
I 
10JUL93 LQC 1 3 Paleanotus heteroseta 5 10JUL93 LQC 1 3 Gyptis vittata 2 10JUL93 LQC 1 3 Lumbrineris parvapedata 1 
I 
I 
10JUL93 LQC 1 3 Paraprionospio pinnata 1 10JUL93 LQC 1 3 Maldanidae (unidentified) 1 10JUL93 LQC 1 3 Parvilucina multi/ineata 2 10JUL93 LQC 1 3 Ampe/isca verrilli 2 10JUL93 LQC 1 3 Paraonidae Grp. A 2 10JUL93 LQC 1 3 Mediomastus ambiseta 9 
I 26 1
10JUL93 LQC 1 10 Oligochaetes (unidentified) 10JUL93 LQC 1 10 Pa/eanotus heteroseta 1I 10JUL93 LQC 1 10 Glycera americana 1 10JUL93 LQC 1 10 Magelona pettiboneae 1 10JUL93 LQC 1 10 Melinna maculata 1I 10JUL93 LQC 1 10 Aligena texasiana 1 10JUL93 LQC 1 10 Paraonidae Grp. A 1 10JUL93 LQC 1 10 Paraonidae Grp. B 1I 10JUL93 LQC 1 10 Mediomastus ambiseta 3 
I 
11 
I 
10JUL93 LQC 2 3 Rhynchocoel (unidentified) 2 10JUL93 LQC 2 3 Oligochaetes (unidentified) 1 
I 
10JUL93 LQC 2 3 Paleanotus heteroseta 2 10JUL93 LQC 2 3 Onuphis eremita 1 10JUL93 LQC 2 3 Magelona phyllisae 1 
I 
10JUL93 LQC 2 3 Megalomma biocu/atum 1 10JUL93 LQC 2 3 Ampelisca verrilli 1 10JUL93 LQC 2 3 Paraonidae Grp. B 1 I 
10JUL93 LQC 2 3 Ophiuroidea (unidentified) 1 10JUL93 LQC 2 3 Sphaerosyl/is sp. A 2 10JUL93 LQC 2 3 Turbellaria (unidentified) 1 10JUL93 LQC 2 3 Mediomastus ambiseta 14 10JUL93 LQC 2 3 Euc/ymene sp. B 2 
I 
30 I 
111 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
10JUL93 LQC 2 10 Rhynchocoel (unidentified) 2 
I 
10JUL93 LQC 2 10 Oligochaetes (unidentified) 6 10JUL93 LQC 2 10 Paleanotus heteroseta 6 10JUL93 LQC 2 10 Sigambra bassi 1 I 
I 
10JUL93 LQC 2 10 Gyptis vittata 4 10JUL93 LQC 2 10 Tharyx setigera 3 10JUL93 LQC 2 10 C/ymenella torquata 1 10JUL93 LQC 2 10 Aligena texasiana 1 10JUL93 LQC 2 10 Listriella c/ymenellae 1 10JUL93 LQC 2 10 Schistomeringos sp. A 4 10JUL93 LQC 2 10 Paraonidae Grp. 8 18 10JUL93 LQC 2 10 Mediomastus ambiseta 5 I 10JUL93 LQC 2 10 Euclymene sp. B 2 
I 54 
I 
10JUL93 LQC 3 3 Rhynchocoel (unidentified) 3 10JUL93 LQC 3 3 Spiophanes bombyx 2I 10JUL93 LQC 3 3 Listriella c/ymenellae 1 10JUL93 LQC 3 3 Phasco/ion strombi 1 10JUL93 LQC 3 3 Phoronis architecta 1I 10JUL93 LQC 3 3 Sphaerosyllis sp. A 2 10JUL93 LQC 3 3 Laeonereis culveri 1 10JUL93 LQC 3 3 Turbellaria (unidentified) 1 10JUL93 LQC 3 3 Mediomastus ambiseta 6 
10JUL93 LQC 3 3 Euclymene sp. B 2 
I 20 
I I I I I 
112 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
10JUL93 LQC 3 10 Rhynchocoel (unidentified) 1 
I 
10JUL93 LQC 3 10 Oligochaetes (unidentified) 1 10JUL93 LQC 3 10 Gyptis vittata 1 10JUL93 LQC 3 10 Onuphis eremita 1 I 
I 
10JUL93 LQC 3 10 Lumbrineris parvapedata 1 10JUL93 LQC 3 10 Paraprionospio pinnata 1 10JUL93 LQC 3 10 Tharyx setigera 1 10JUL93 LQC 3 10 C/ymenella torquata 1 10JUL93 LQC 3 10 Listriella clymenellae 1 10JUL93 LQC 3 10 Paraonidae Grp. A 1 10JUL93 LQC 3 10 Paraonidae Grp. B 2 10JUL93 LQC 3 10 Asychis elongata 1 I 10JUL93 LQC 3 10 Naineris sp. A 1 
10JUL93 LQC 3 10 Mediomastus ambiseta 3 
I 	17 
10JUL93 NCC 1 3 Oligochaetes (unidentified) 1
I 	10JUL93 NCC 1 3 Gyptis vittata 1 10JUL93 NCC 1 3 Glycinde so/itaria 1 10JUL93 NCC 1 3 Lumbrineris parvapedata 1
I 	10JUL93 NCC 1 3 Paraprionospio pinnata 1 10JUL93 NCC 1 3 Magelona pettiboneae 1 10JUL93 NCC 1 3 Cossura delta 1
I 	10JUL93 NCC 1 3 Branchioasychis americana 1 10JUL93 NCC 1 3 Cyc/aspis varians 1 
I 	9 
I I I I I 
113 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
10JUL93 NCC 1 10 Lumbrineris parvapedata 2 
I 
10JUL93 NCC 1 10 Polydora cau/leryi 2 10JUL93 NCC 1 10 Paraprionospio pinnata 1 10JUL93 NCC 1 10 Tharyx setigera 3 
I 
10JUL93 NCC 1 10 Cossura delta 3 10JUL93 NCC 1 10 Branchioasychis americana 1 10JUL93 NCC 1 10 Clymenella torquata 1 
I 
10JUL93 NCC 1 10 Paraonidae Grp. A 1 10JUL93 NCC 1 10 Ophiuroidea (unidentified) 1 10JUL93 NCC 1 10 Pinnixa sp. 2 
10JUL93 NCC 1 10 Turbellaria (unidentified) 1 10JUL93 NCC 1 10 Mediomastus ambiseta 2 
I 20 
I 10JUL93 NCC 2 3 Glycinde solitaria 1 10JUL93 NCC 2 3 Cossura delta 3 10JUL93 NCC 2 3 Mediomastus ambiseta 3
I 7 
I 10JUL93 NCC 2 10 Lumbrineris parvapedata 3 10JUL93 NCC 2 10 Tharyx setigera 2 10JUL93 NCC 2 10 Paraonidae Grp. A 1I 10JUL93 NCC 2 10 Paraonidae Grp. B 1 10JUL93 NCC 2 10 Mediomastus ambiseta 1 
I 8 
I 
I 
10JUL93 NCC 3 3 Paleanotus heteroseta 1 10JUL93 NCC 3 3 Gyptis vittata 2 10JUL93 NCC 3 3 Glycinde so/itaria 1 10JUL93 NCC 3 3 Lumbrineris parvapedata 1 
I 
10JUL93 NCC 3 3 Magelona phyllisae 1 10JUL93 NCC 3 3 Spiochaetopterus costarum 1 10JUL93 NCC 3 3 Mediomastus ambiseta 1 
8 
I 
I 

114 
I 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
10JUL93 NCC 3 10 Pa/eanotus heteroseta 2 10JUL93 NCC 3 10 Lumbrineris parvapedata 2 10JUL93 NCC 3 10 Tharyx setigera 1 10JUL93 NCC 3 10 Cossura delta 1 
10JUL93 NCC 3 10 Mediomastus ambiseta 1 
I I 
7 
I 
10JUL93 NCO 1 3 Oligochaetes (unidentified) 1 10JUL93 NCO 1 3 Paraprionospio pinnata 1 
10JUL93 NCO 1 3 Mediomastus ambiseta 5 
I 
7 
10JUL93 NCO 1 10 Oligochaetes (unidentified) 1 I 10JUL93 NCO 1 10 Apoprionospio pygmaea 6 10JUL93 NCO 1 10 Ophiuroidea (unidentified) 2 
I 9 10JUL93 NCO 2 3 Oligochaetes (unidentified) 1
I 	10JUL93 NCO 2 3 G/ycinde so/itaria 1 10JUL93 NCO 2 3 Diopatra cuprea 1 10JUL93 NCO 2 3 Macoma brevifrons 1
I 	10JUL93 NCO 2 3 Ampelisca verrilli 1 10JUL93 NCO 2 3 Mediomastus ambiseta 10 
I 	15 
I 
10JUL93 NCO 2 10 Polychaete juv. (unidentified) 1 
I I I I 
115 
Appendix Ill: 	La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
10JUL93 NCO 3 3 Glycinde solitaria 	1 
10JUL93 NCO 	3 3 Diopatra cuprea 1 3 Polydora caul/eryi 1 
I 
10JUL93 NCO 3 Paraprionospio pinnata 1
10JUL93 NCO 	3 3 
3 Apoprionospio pygmaea 2
10JUL93 	NCO 3 NCO 3 3 Haploscoloplos foliosus 1 
I 
10JUL93 3 Acteocina cana/iculata 1
10JUL93 	NCO 3 
3 	Ophiuroidea (unidentified) 1
10JUL93 NCO 3 Periploma cf. orbiculare 1 
I 
10JUL93 NCO 3 3 3 Mediomastus ambiseta 10
10JUL93 NCO 	3 20 
I 
Paraprionospio pinnata 1
10JUL93 NCO 	3 10 3 10 Ophiuroidea (unidentified) 1
10JUL93 	NCO
I 
2 
I 	Anthozoa (unidentified) 1
10JUL93 NCE 	1 3 
1 3 Rhynchocoel (unidentified) 2
10JUL93 NCE 10JUL93 NCE 1 3 Gyptis vittata 1I 10JUL93 NCE 1 3 Schistomeringos rudolphi 3 10JUL93 NCE 1 3 Paraprionospio pinnata 1 10JUL93 NCE 1 3 Tharyx setigera 1I NCE 1 3 Cossura delta 1
10JUL93 10JUL93 NCE 1 3 Owenia fusiformis 1 10JUL93 NCE 1 3 Listriella clymenellae 6I Paraonidae Grp. B 1 
I 
10JUL93 NCE 1 3 10JUL93 NCE 1 3 Sphaerosyl/is sp. A 1 10JUL93 NCE 1 3 Mediomastus ambiseta 17 
10JUL93 NCE 	1 3 Euclymene sp. B 6 
I 
42 
I 
I 
I 

116 
I 
I 
10JUL93 NCE 1 10 Oligochaetes (unidentified) 2 10JUL93 NCE 1 10 Paleanotus heteroseta 6 10JUL93 NCE 1 10 Gyptis vittata 4 10JUL93 NCE 1 10 Lumbrineris parvapedata 1 I 
10JUL93 NCE 1 10 Paraprionospio pinnata 1 10JUL93 NCE 1 10 Tharyx setigera 8 10JUL93 NCE 1 10 Clymenella torquata 1I 10JUL93 NCE 1 10 Maldanidae (unidentified) 1 10JUL93 NCE 1 10 Listriella c/ymenellae 6 10JUL93 NCE 1 10 Paraonidae Grp. B 1 NCE 1 10 Turbellaria (unidentified) 1 
I 
10JUL93 10JUL93 NCE 1 10 Mediomastus ambiseta 4 10JUL93 NCE 1 10 Euclymene sp. B 1 
I 37 
10JUL93 NCE 2 3 Rhynchocoel (unidentified) 1 10JUL93 NCE 2 3 Oligochaetes (unidentified) 2I 10JUL93 NCE 2 3 G/ycinde solitaria 1 
I 
I 
10JUL93 NCE 2 3 Schistomeringos rudolphi 1 10JUL93 NCE 2 3 Polydora caul/eryi 1I 10JUL93 NCE 2 3 Paraprionospio pinnata 3 10JUL93 NCE 2 3 Apoprionospio pygmaea 1 10JUL93 NCE 2 3 Ampe/isca verrilli 1I 10JUL93 NCE 2 3 Listriel/a clymenellae 1 10JUL93 NCE 2 3 Paraonidae Grp. 8 1 10JUL93 NCE 2 3 Ophiur'oidea (unidentified) 1 10JUL93 NCE 2 3 Ascidiacea 1 10JUL93 NCE 2 3 Mediomastus ambiseta 11 10JUL93 NCE 2 3 Euclymene sp. 8 2 
28 
I I I I 
117 
I 

L 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
10JUL93 NCE 2 10 Oligochaetes (unidentified) 19 10JUL93 NCE 2 10 Gyptis vittata 4 10JUL93 NCE 2 10 Ceratonereis irritabi/is 2 10JUL93 NCE 2 10 Onuphis eremita 1 
I 
10JUL93 NCE 2 10 Lumbrineris parvapedata 2 10JUL93 NCE 2 10 Polydora caul/eryi 17 10JUL93 NCE 2 10 Spiophanes bombyx 1 
I 
10JUL93 NCE 2 10 Tharyx setigera 6 10JUL93 NCE 2 10 Listriel/a clymenel/ae 2 10JUL93 NCE 2 10 Phoronis architecta 1 
I 
10JUL93 NCE 2 10 Paraonidae Grp. B 3 10JUL93 NCE 2 10 Ophiuroidea (unidentified) 1 10JUL93 NCE 2 10 Periploma cf. orbiculare 1 
10JUL93 NCE 2 10 Mediomastus ambiseta 6 10JUL93 NCE 2 10 Euc/ymene sp. B 1 
I 67 
10JUL93 NCE 3 3 Anthozoa (unidentified) 4
I 
10JUL93 NCE 3 3 Rhynchocoel (unidentified) 1 10JUL93 NCE 3 3 Paleanotus heteroseta 1I 10JUL93 NCE 3 3 Gyptis vittata 2 10JUL93 NCE 3 3 Podarke obscura 1 10JUL93 NCE 3 3 Polydora caulleryi 2I 10JUL93 NCE 3 3 Listriella clymenel/ae 2 
I 
10JUL93 NCE 3 3 Phoronis architecta 1 10JUL93 NCE 3 3 Listriel/a bamardi 1 10JUL93 NCE 3 3 Paraonidae Grp. B 1 
I 
10JUL93 NCE 3 3 Mollusca (unidentified) 1 10JUL93 NCE 3 3 Mediomastus ambiseta 18 10JUL93 NCE 3 3 Euclymene sp. B 4 
I 
39 
I 
I 

I 
118 
Appendix Ill: La Quinta Channel and Corpus Christi Bay species list. Continued. 
I 
I 
10JUL93 NCE 3 10 Rhynchocoel (unidentified) 2 10JUL93 NCE 3 10 Oligochaetes (unidentified) 12 10JUL93 NCE 3 10 Pa/eanotus heteroseta 9 10JUL93 NCE 3 10 Gyptis vittata 6 
I 
10JUL93 NCE 3 10 Ceratonereis irritabilis 3 10JUL93 NCE 3 10 Onuphis eremita 1 10JUL93 NCE 3 10 Lumbrineris parvapedata 1 
I 
10JUL93 NCE 3 10 Schistomeringos rudolphi 2 10JUL93 NCE 3 10 Po/ydora caulleryi 5 10JUL93 NCE 3 10 Tharyx setigera 10I 10JUL93 NCE 3 10 Haplosco/oplos foliosus 3 10JUL93 NCE 3 10 Cossura delta 1 10JUL93 NCE 3 10 Clymenella torquata 3 
10JUL93 NCE 3 10 Listriella clymenellae 3 10JUL93 NCE 3 10 Paraonidae Grp. B 7 I 10JUL93 NCE 3 10 Pinnixa sp. 1 10JUL93 NCE 3 10 Brachyuran zoea 1 10JUL93 NCE 3 10 Mediomastus ambiseta 2I 10JUL93 NCE 3 10 Euclymene sp. B 2 
I 74 
I I I I I I I 
119 
Total number (n) of inidividuals and dry biomass weight (mg) of each group. ListedI according to date, station (STA), replicate number (REP), and section (SEC). 
I 
Date STA REP SEC Taxa n mg 
090CT92 LQA 1 3 Crustacea 1 0.17 090CT92 LQA 1 3 Rhynchocoela 2 0.04I 090CT92 LOA 1 3 Ophiuroidea 1 0.03 090CT92 LQA 1 3 Polychaeta 47 3.46 
I 51 3.70 
I 
090CT92 LQA 1 10 Crustacea 1 0.07 090CT92 LQA 1 10 Rhynchocoela 1 0.04 090CT92 LQA 1 10 Polychaeta 59 20.83 
I 61 20.94 
I 090CT92 LQA 2 3 Ophiuroidea 1 0.04 090CT92 LQA 2 3 Polychaeta 42 5.29 
I 43 5.33 
090CT92 LQA 2 10 Hemicordata 1 0.86I 090CT92 LQA 2 10 Polychaeta 14 6.42 
15 7.28 
I 
I 
090CT92 LQA 3 3 Crustacea 2 0.13 090CT92 LQA 3 3 Rhynchocoela 1 0.17 090CT92 LQA 3 3 Other 1 0.02 090CT92 LQA 3 3 Polychaeta 20 0.99 
I 24 1.31 
090CT92 LQA 3 10 Rhynchocoela 1 0.28I 090CT92 LQA 3 10 Polychaeta 21 6.57 090CT92 LQA 3 10 Sipunculida 1 0.40 
I 23 7.25 
I 
I 
120 I 
I 
090CT92 LQB 1 3 Crustacea 1 0.07 090CT92 LQB 1 3 Rhynchocoela 1 0.12 090CT92 LQB 1 3 Polychaeta 26 1.28 
I 	28 1.47 

090CT92 LQB 1 10 Mollusca 1 0.41I 090CT92 LQB 1 10 Rhynchocoela 2 0.37 090CT92 LQB 1 10 Polychaeta 30 6.72 

I 	33 7.50 


I 
090CT92 LQB 2 3 Crustacea 1 0.09 
090CT92 LQB 2 3 Polychaeta 18 0.85 
I 	19 0.94 
090CT92 LQB 2 10 Polychaeta 12 7.19
I 
090CT92 LQB 3 3 Mollusca 1 4.26 090CT92 LQB 3 3 Ophiuroidea 2 0.09I 090CT92 LQB 3 3 Polychaeta 22 1.34 
25 5.69
I 
090CT92 LQB 3 10 Polychaeta 18 3.82 
I 090CT92 LQC 1 3 Crustacea 4 0.63 090CT92 LQC 1 3 Mollusca 1 3.95 090CT92 LQC 1 3 Rhynchocoela 1 0.17I 090CT92 LQC 1 3 Ophiuroidea 1 0.03 090CT92 LQC 1 3 Polychaeta 48 6.09 
I 	55 10.87 
090CT92 LQC 1 10 Mollusca 3 1.07
I 	090CT92 LQC 1 10 Rhynchocoela 4 0.08 090CT92 LQC 1 10 Polychaeta 25 4.14 
I 	32 5.29 
I 
121 
Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
I 
090CT92 LQC 2 3 Crustacea 1 0.03 090CT92 LQC 2 3 Mollusca 4 0.25 090CT92 LQC 2 3 Rhynchocoela 2 0.25 090CT92 LQC 2 3 Polychaeta 44 1.81 
51 2.34 
I 090CT92 LQC 2 10 Rhynchocoela 1 0.97 090CT92 LQC 2 10 Polychaeta 12 4.26 
I 13 5.23 
090CT92 LQC 3 3 Crustacea 4 0.11
I 
090CT92 LQC 3 3 Mollusca 4 0.52 090CT92 LQC 3 3 Rhynchocoela 2 0.54 I 090CT92 LQC 3 3 Polychaeta 50 1.84 
60 3.01
I 
090CT92 LQC 3 10 Rhynchocoela 1 0.25 090CT92 LQC 3 10 Polychaeta 16 3.83
I 
17 4.08 
I 090CT92 NCC 1 3 Crustacea 6 0.12 
I 
090CT92 NCC 1 3 Mollusca 2 8.33 090CT92 NCC 1 3 Rhynchocoela 1 0.13 090CT92 NCC 1 3 Ophiuroidea 2 0.20 090CT92 NCC 1 3 Polychaeta 138 3.16 
I 149 11.94 
I 
090CT92 NCC 1 10 Crustacea 2 0.10 
I 
090CT92 NCC 1 10 Rhynchocoela 2 6.72 090CT92 NCC 1 10 Ophiuroidea 1 1.99 090CT92 NCC 1 .· 10 Polychaeta 18 5.73 
23 14.54 
I 
I 

122 
I 
Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
090CT92 NCC 2 3 Crustacea 4 0.20 090CT92 NCC 2 3 Mollusca 2 4.96 090CT92 NCC 2 3 Rhynchocoela 1 0.04 I 
0.08 
I 
090CT92 NCC 2 3 Other 2 090CT92 NCC 2 3 Ophiuroidea 1 2.04 090CT92 NCC 2 3 Polychaeta 104 2.10 090CT92 NCC 2 3 Sipunculida 1 1.96 
115 11.38 
I 
I 
090CT92 NCC 2 10 Crustacea 1 0.06 090CT92 NCC 2 10 Rhynchocoela 1 0.34 090CT92 NCC 2 10 Polychaeta 19 6.24 
21 6.64 
I 
090CT92 NCC 3 3 Crustacea 2 0.05 090CT92 NCC 3 3 Mollusca 3 11.05I 090CT92 NCC 3 3 Rhynchocoela 1 0.13 090CT92 NCC 3 3 Ophiuroidea 1 0.03 090CT92 NCC 3 3 Polychaeta 142 3.82
I 
149 15.08 
I 	090CT92 NCC 3 10 Rhynchocoela 2 0.34 090CT92 NCC 3 10 Polychaeta 18 8.53 
I 	20 8.87 
I 
090CT92 NCO 1 3 Mollusca 4 0.17 
090CT92 NCO 1 3 Polychaeta 93 2.84 
I 
97 3.01 
I 
090CT92 NCO 1 10 Crustacea 2 0.07 090CT92 NCO 1 10 Polychaeta 93 7.59 
95 7.66 
I 

I 

123 
Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
2 Mollusca 4 0.10
090CT92 NCO 3I 3 Rhynchocoela 1 0.07
090CT92 NCO 2 090CT92 NCO 2 3 Polychaeta 162 6.16 
I 167 6.33 
I 
090CT92 NCO 2 10 Polychaeta 25 4.12 
090CT92 NCO 3 3 Crustacea 1 0.12 090CT92 NCO 3 3 Mollusca 4 0.12I 3 3 Rhynchocoela 1 0.08
090CT92 NCO 090CT92 NCO 3 3 Polychaeta 97 2.46 
I 103 2.78 
Crustacea 2 0.12
I 
090CT92 NCO 3 10 NCO 3 10 Polychaeta 101 7.20
090CT92 
I 
103 7.32 
090CT92 NCE 1 3 Crustacea 1 0.04 I 090CT92 NCE 1 3 Mollusca 3 0.11 090CT92 NCE 1 3 Polychaeta 28 9.38 
I 32 9.53 
090CT92 NCE 1 10 Crustacea 1 0.09I Rhynchocoela 2 8.51
090CT92 NCE 1 10 0.31 
I 
090CT92 NCE 1 10 Other 2 090CT92 NCE 1 10 Polychaeta 29 19.32 
34 28.23 
I 
I 090CT92 NCE 2 3 Crustacea 2 0.02 090CT92 NCE 2 3 Rhynchocoela 1 0.08 090CT92 NCE 2 3 Polychaeta 16 2.96 
19 3.06 
I 
I 
124 I 
Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
090CT92 NCE 2 10 Crustacea 2 0.90I 10 Rhynchocoela 1 1.46
090CT92 NCE 2 0.43 
I 
090CT92 NCE 2 10 Other 1 090CT92 NCE 2 10 Polychaeta 7 27.56 
11 30.35 
I 090CT92 NCE 3 3 Crustacea 4 0.09 090CT92 NCE 3 3 Mollusca 3 1.93 090CT92 NCE 3 3 Ophiuroidea 1 0.01I 3 Polychaeta 56 8.46
090CT92 NCE 3 
I 
64 10.49 
I 
090CT92 NCE 3 10 Crustacea 2 0.19 090CT92 NCE 3 10 Ophiuroidea 1 11.20 
090CT92 NCE 3 10 Polychaeta 24 13.30 
I 27 24.69 
15JAN93 LOA 1 3 Crustacea 2 0.03I 15JAN93 LOA 1 3 Mollusca 6 1.20 15JAN93 LOA 1 3 Rhynchocoela 1 0.03 15JAN93 LQA 1 3 Polychaeta 70 14.72
I 
79 15.98 
I 
I 15JAN93 LQA 1 10 Mollusca 2 0.09 15JAN93 LQA 1 10 Rhynchocoela 2 0.26 15JAN93 LQA 1 10 Polychaeta 33 28.66 
37 29.01 
I 15JAN93 LQA 2 3 Crustacea 1 0.18 15JAN93 LQA 2 3 Mollusca 4 0.13 15JAN93 LQA 2 3 Rhynchocoela 1 0.13
I 15JAN93 LQA 2 3 Polychaeta 41 18.60 
I 
47 19.04 
I 

125 
I 
I 
15JAN93 LOA 2 10 Mollusca 2 0.17 
15JAN93 LOA 2 10 Other 1 0.16 15JAN93 LQA 2 10 Polychaeta 62 44.98 
I 65 45.31 
15JAN93 LQA 3 3 Mollusca 1 0.04
I 
15JAN93 LQA 3 3 Rhynchocoela 3 3.21 15JAN93 LQA 3 3 Ophiuroidea 1 0.04 I 15JAN93 LOA 3 3 Polychaeta 33 19.93 
38 23.22
I 
15JAN93 LQA 3 10 Crustacea 1 0.05 15JAN93 LQA 3 10 Rhynchocoela 3 4.03I 15JAN93 LQA 3 10 Polychaeta 37 50.10 
I 
41 54.18 
I 
15JAN93 LQB 1 3 Crustacea 1 0.24 15JAN93 LQB 1 3 Mollusca 8 1.24 15JAN93 LQB 1 3 Rhynchocoela 2 0.25 
I 
15JAN93 LQB 1 3 Other 9 15.14 15JAN93 LQB 1 3 Polychaeta 53 10.33 
73 27.20 
I 15JAN93 LQB 1 10 Mollusca 4 0.36 15JAN93 LQB 1 10 Polychaeta 29 16.76 
I 33 17.12 
I 
15JAN93 LQB 2 3 Crustacea 1 0.11 
15JAN93 LQB 2 3 Mollusca 3 0.09 15JAN93 LQB 2 3 Rhynchocoela 1 0.23 I 15JAN93 LQB 2 3 Other 61 7.11 15JAN93 LQB 2 3 Polychaeta 26 5.84 
I 92 13.38 
I 

126 
I 
L 

I 
15JAN93 LQB 2 10 Rhynchocoela 3 0.32 
15JAN93 LQB 2 10 Other 5 0.24 15JAN93 LQB 2 10 Polychaeta 30 27.45 
I 	38 28.01 
I 15JAN93 LQB 3 3 Crustacea 3 0.09 15JAN93 LQB 3 3 Mollusca 4 0.26 15JAN93 LQB 3 3 Other 31 2.65I 15JAN93 LQB 3 3 Polychaeta 14 15.84 
52 18.84 
I 
15JAN93 LQB 3 10 Other 2 0.04 15JAN93 LQB 3 10 Polychaeta 35 9.97 
I 
37 10.01 
I 15JAN93 LQC 1 3 Crustacea 3 1.17 15JAN93 LQC 1 3 Mollusca 4 11.97 15JAN93 LQC 1 3 Other 2 0.13I 15JAN93 LQC 1 3 Ophiuroidea 1 1.88 15JAN93 LQC 1 3 Polychaeta 39 5.61 
I 	49 20.76 
15JAN93 LQC 1 10 Mollusca 1 0.20
I 	15JAN93 LQC 1 10 Rhynchocoela 1 0.06 15JAN93 LQC 1 10 Polychaeta 17 18.97 
I 	19 19.23 
I 
15JAN93 LQC 2 3 Crustacea 2 0.07 
15JAN93 LQC 2 3 Mollusca 5 0.46 15JAN93 LQC 2 3 Rhynchocoela 2 0.08 I 15JAN93 LQC 2 3 Other 1 0.02 15JAN93 LQC 2 3 Ophiuroidea 1 0.34 15JAN93 LQC 2 3 Polychaeta 38 3.93
I 
49 4.90 
I 
127 
"-----­
I 
I 

Continued.
Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. 
I 
REP SEC Taxa n mg
Date 	STA Crustacea 1 0.92
15JAN93 LQC 2 10I 10 Mollusca 4 0.35
15JAN93 	LQC 2 LQC 2 10 Rhynchocoela 2 0.54 
I 
15JAN93 2 Other 1 0.33
15JAN93 	LQC 10 10 Ophiuroidea 1 0.22
15JAN93 	LQC 2 LQC 2 10 Polychaeta 29 30.68 
15JAN93 
I 	38 33.04 
3 	Crustacea 2 0.06
15JAN93 LQC 3I ·3 Mollusca 8 1.03
15JAN93 	LQC 3 LQC 3 3 Rhynchocoela 2 0.95 
I 
15JAN93 3 Other 14 0.75
15JAN93 	LQC 3 
3 3 Polychaeta 	31 4.44
15JAN93 	LQC 
I 
57 7.23 
15JAN93 LQC 3 10 	Rhynchocoela 1 0.32 Other 1 0.24
I 15JAN93 LQC 	3 10 3 10 Polychaeta 27 20.05
15JAN93 	LQC 
I 	29 20.61 
15JAN93 NCC 1 3 Mollusca 5 2.10I Rhynchocoela 1 0.06
15JAN93 	NCC 1 3 NCC 1 3 Ophiuroidea 1 0.96
15JAN93 1 Polychaeta 1.67
15JAN93 NCC 3 17I Sipunculida 1 0.19
15JAN93 	NCC 1 3 
I 
25 4.98 
I 
15JAN93 NCC 1 10 Mollusca 1 1.47 15JAN93 NCC 1 10 Ophiuroidea 1 25.27 15JAN93 NCC 1 10 Polychaeta 30 19.11 
I 
32 45.85 
I 

I 
I Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
Date STA REP SEC Taxa n mg 
I 
15JAN93 NCC 2 3 Mollusca 5 1.23 15JAN93 NCC 2 3 Ophiuroidea 2 0.33 15JAN93 NCC 2 3 Polychaeta 24 5.89 
I 31 7.45 
15JAN93 NCC 2 10 Ophiuroidea 1 3.73I 15JAN93 NCC 2 10 Polychaeta 5 33.66 
I 
6 37.39 
I 
15JAN93 NCC 3 3 Rhynchocoela 1 0.38 15JAN93 NCC 3 3 Ophiuroidea 2 20.88 
15JAN93 NCC 3 3 Polychaeta 25 4.93 15JAN93 NCC 3 3 Sipunculida 2 0.70 
I 
30 26.89 
I 15JAN93 NCC 3 10 Rhynchocoela 1 0.12 15JAN93 NCC 3 10 Ophiuroidea 2 65.37 15JAN93 NCC 3 10 Polychaeta 12 38.47
I 
15 103.96 
I 15JAN93 NCO 1 3 Crustacea 2 0.25 
I 
15JAN93 NCO 1 3 Mollusca 4 0.23 15JAN93 NCO 1 3 Rhynchocoela 1 0.25 
I 
15JAN93 NCO 1 3 Other 1 1.26 15JAN93 NCO 1 3 Polychaeta 3 2.51 15JAN93 NCO 1 3 Sipunculida 3 0.14 
14 4.64 
I 15JAN93 NCO 1 10 Polychaeta 1 0.01 
I 
I 
I 

129 
Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
I 
15JAN93 NCO 2 3 Crustacea 9 0.37 15JAN93 NCO 2 3 Mollusca 4 0.15 15JAN93 NCO 2 3 Rhynchocoela 3 0.41 15JAN93 NCO 2 3 Polychaeta 9 1.46 
15JAN93 NCO 2 3 Sipunculida 3 0.14 
I 
28 2.53 
15JAN93 NCO 2 10 Polychaeta 1 0.04 
I 
I 15JAN93 NCO 3 3 Crustacea 1 0.01 15JAN93 NCO 3 3 Mollusca 5 0.18 15JAN93 NCO 3 3 Rhynchocoela 3 0.26 
15JAN93 NCO 3 3 Other 1 0.21 15JAN93 NCO 3 3 Polychaeta 4 1.46 
I 
14 2.12 
I 15JAN93 NCO 3 10 Mollusca 1 0.05 15JAN93 NCO 3 10 Polychaeta 3 5.04 
I 4 5.09 
15JAN93 NCE 1 3 Crustacea 1 0.01I 15JAN93 NCE 1 3 Mollusca 5 0.50 
I 
15JAN93 NCE 1 3 Rhynchocoela 1 0.31 15JAN93 NCE 1 3 Other 3 1.16 
15JAN93 NCE 1 3 Polychaeta 27 2.05 
I 
37 4.03 
I 
15JAN93 NCE 1 10 Ophiuroidea 1 0.96 15JAN93 NCE 1 10 Polychaeta 6 7.58 
7 8.54 
I 

I 

I 

130 
L___ 
Date STA REP SEC Taxa n mg
I 
15JAN93 NCE 2 3 Mollusca 3 0.07 15JAN93 NCE 2 3 Rhynchocoela 1 0.17
I 
0.03 
15JAN93 NCE 2 3 Other 2 15JAN93 NCE 2 3 Ophiuroidea 2 0.17 I 15JAN93 NCE 2 3 Polychaeta 16 6.70 15JAN93 NCE 2 3 Sipunculida 1 0.04 
I 25 7.18 
I 
15JAN93 NCE 2 10 Other 1 0.62 15JAN93 NCE 2 10 Polychaeta 9 1.13 
I 
10 1.75 
I 
15JAN93 NCE 3 3 Crustacea 19 1.71 15JAN93 NCE 3 3 Mollusca 3 0.13 15JAN93 NCE 3 3 Rhynchocoela 3 0.96 15JAN93 NCE 3 3 Other 1 0.04 15JAN93 NCE 3 3 · Ophiuroidea 2 1.12I 15JAN93 NCE 3 3 Polychaeta 26 4.28 15JAN93 NCE 3 3 Sipunculida 2 0.50 
I 56 8.74 
I 15JAN93 NCE 3 10 Crustacea 2 0.23 15JAN93 NCE 3 10 Mollusca . 1 0.43 15JAN93 NCE 3 10 Rhynchocoela 2 1.80I 15JAN93 NCE 3 10 Ophiuroidea 2 1.16 15JAN93 NCE 3 10 Polychaeta 29 49.59 
I 36 53.21 
09APR93 LOA 1 3 Mollusca 1 0.12 
I 
I 09APR93 LQA 1 3 Rhynchocoela 1 0.03 09APR93 LQA 1 3 Other 1 0.16 09APR93 LOA 1 3 Polychaeta 53 20.69 
56 21.00 
I 
I 

131 
I I 
I Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
I 
Date STA REP SEC Taxa n mg 
I 
I 
09APR93 LOA 1 10 Crustacea 1 0.06 09APR93 LOA 1 10 Mollusca 1 1.01 09APR93 LOA 1 10 Rhynchocoela 1 0.98 09APR93 LOA 1 10 Polychaeta 63 101 .09 
66 103.14 
I 
I 09APR93 LOA 2 3 Crustacea 1 0.04 09APR93 LOA 2 3 Mollusca 3 0.18 09APR93 LOA 2 3 Rhynchocoela 1 0.29 
I 
09APR93 LQA 2 3 Other 2 0.38 09APR93 LOA 2 3 Ophiuroidea 1 0.24 09APR93 LOA 2 3 Polychaeta 32 10.07 
40 11.20 
I 
09APR93 LOA 2 10 Other 2 1.06 09APR93 LOA 2 10 Polychaeta 34 75.93
I 
36 76.99 
I 09APR93 LOA 3 3 Crustacea 2 0.03 09APR93 LQA 3 3 Mollusca 4 3.93 09APR93 LQA 3 3 Rhynchocoela 2 5.77I 09APR93 LQA 3 3 Other 2 0.44 09APR93 LQA 3 3 Polychaeta 51 18.51 
I 61 28.68 
I 
09APR93 LOA 3 10 Mollusca 1 0.07 
09APR93 LOA 3 10 Polychaeta 36 102.77 
I 
37 102.84 
I 
09APR93 LQB 1 3 Crustacea 3 0.03 09APR93 LOB 1 3 Rhynchocoela 2 0.17 
I 
09APR93 LQB 1 3 Other 1 0.02 09APR93 LQB 1 3 Polychaeta 41 8.06 09APR93 LOB 1 3 Sipunculida 1 0.05 
48 8.33 
I 
132 
I 
09APR93 LOB 1 10 Other 1 0.11 
09APR93 LOB 1 10 Polychaeta 30 50.11 09APR93 LOB 1 10 Sipunculida 1 0.20 
I 	32 50.42 
09APR93 LOB 2 3 Crustacea 1 0.04 
0.09
I 	09APR93 LOB 2 3 Other 1 09APR93 LOB 2 3 Polychaeta 47 60.21 
I 	49 60.34 
I 
09APR93 LOB 2 10 Crustacea 2 0.28 
09APR93 LOB 2 10 Polychaeta 14 20.99 
I 
16 20.07 
09APR93 LOB 3 3 Crustacea 3 0.22 I 09APR93 LOB 3 3 Mollusca 2 0.13 
09APR93 LOB 3 3 Other 4 0.52 09APR93 LOB 3 3 Polychaeta 37 8.16
I 
46 9.03 
I 	09APR93 LOB 3 10 Polychaeta 53 36.70 
I 
09APR93 LQC 1 3 Crustacea 6 0.02 09APR93 LQC 1 3 Mollusca 8 5.33 
I 
09APR93 LQC 1 3 Rhynchocoela 2 0.30 09APR93 LQC 1 3 Other 4 1.28 
09APR93 LQC 1 3 Ophiuroidea 1 5.66 09APR93 LQC 1 3 Polychaeta 46 41.15 
I 	67 53.74 
09APR93 LQC 1 10 Mollusca 4 0.61 
1 0.05
I 	09APR93 LQC 1 10 Other 09APR93 LQC 1 10 Polychaeta 26 18.12 
I 	31 18.78 
I 
133 
I 
09APR93 LQC 2 3 Crustacea 4 0.05 09APR93 LQC 2 3 Hemicordata 1 0.22 
I 
09APR93 LQC 2 3 Mollusca 4 0.06 09APR93 LQC 2 3 Ophiuroidea 2 0.07 09APR93 LQC 2 3 Polychaeta 31 10.28 09APR93 LQC 2 3 Sipunculida 1 2.71 
I 	43 13.39 
I 
09APR93 LQC 2 10 Crustacea 2 0.08 
I 
09APR93 LQC 2 10 Mollusca 11 1.88 09APR93 LQC 2 10 Rhynchocoela 1 0.56 09APR93 LQC 2 10 Polychaeta 39 64.56 
53 67.08 
I 
09APR93 LQC 3 3 Crustacea 3 0.40 09APR93 LQC 3 3 Mollusca 5 0.47 I 09APR93 LQC 3 3 Rhynchocoela 2 15.34 09APR93 LQC 3 3 Polychaeta 40 17.39 
I 	50 33.60 
09APR93 LQC 3 10 Mollusca 1 0.06
I 	09APR93 LQC 3 10 Rhynchocoela 1 0.57 09APR93 LQC 3 10 Polychaeta 11 26.82 
I 	13 27.45 
I 
09APR93 NCC 1 3 Crustacea 2 0.04 09APR93 NCC 1 3 Mollusca 1 0.34 09APR93 NCC 1 3 Polychaeta 15 4.65 
I 	18 5.03 
I 
09APR93 NCC 1 10 Polychaeta 12 11.06 
I 
I 

134 
I 
I Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
Date STA REP SEC Taxa n mg 
I 
09APR93 NCC 2 3 Crustacea 2 0.04 
I 
09APR93 NCC 2 3 Mollusca 1 0.07 09APR93 NCC 2 3 Rhynchocoela 2 0.28 09APR93 NCC 2 3 Polychaeta 18 7.94 
23 8.33 
I 
09APR93 NCC 2 10 Rhynchocoela 1 3.38 09APR93 NCC 2 10 Polychaeta 9 15.36
I 
10 18.74 
I 09APR93 NCC 3 3 Crustacea 2 0.13 09APR93 NCC 3 3 Ophiuroidea 1 0.84 09APR93 NCC 3 3 Polychaeta 21 11.44
I 
24 12.41 
I 09APR93 NCC 3 10 Rhynchocoela 1 0.15 
I 
09APR93 NCC 3 10 Ophiuroidea 1 57.21 09APR93 NCC 3 10 Polychaeta 10 14.43 
12 71.79 
I 
I 09APR93 NCO 1 3 Crustacea 1 0.01 09APR93 NCO 1 3 Rhynchocoela 1 0.11 09APR93 NCO 1 3 Polychaeta 47 6.66 
09APR93 NCO 1 3 Sipunculida 1 0.13 
I 
50 6.91 
09APR93 NCO 1 10 Polychaeta 5 2.51 
I 09APR93 NCO 2 3 Crustacea 2 0.06 09APR93 NCO 2 3 Mollusca 3 0.18 I 09APR93 NCO 2 3 Rhynchocoela 1 0.77 09APR93 NCO 2 3 Other 1 8.82 09APR93 NCO 2 3 Polychaeta 45 3.25
I 
52 13.08 
I 
135 
I 
I Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
Date STA REP SEC Taxa n mg 
I 
09APR93 NCO 2 10 Polychaeta 4 1.96 
I 
09APR93 NCO 3 3 Crustacea 5 0.33 09APR93 NCO 3 3 Mollusca 2 0.18 09APR93 NCO 3 3 Polychaeta 91 5.63 
I 
98 6.14 
09APR93 NCO 3 10 Polychaeta 4 10.09 
I 
09APR93 NCE 1 3 Crustacea 32 1.18 09APR93 NCE 1 3 Mollusca 3 0.38I 09APR93 NCE 1 3 Other 1 0.23 09APR93 NCE 1 3 Polychaeta 39 76.95 
I 75 78.74 
09APR93 NCE 1 10 Mollusca 1 0.17I 09APR93 NCE 1 10 Polychaeta 19 50.86 
I 
20 51.03 
.1 
09APR93 NCE 2 3 Crustacea 1 0.02 09APR93 NCE 2 3 Mollusca 2 2.55 
I 
09APR93 NCE 2 3 Rhynchocoela 2 0.20 09APR93 NCE 2 3 Ophiuroidea 1 0.68 09APR93 NCE 2 3 Polychaeta 15 12.06 
21 15.51 
I 
I 09APR93 NCE 2 10 Crustacea 1 0.06 09APR93 NCE 2 10 Mollusca 1 0.05 09APR93 NCE 2 10 Other 1 0.10 09APR93 NCE 2 10 Ophiuroidea 1 3.55 09APR93 NCE 2 10 Polychaeta 32 33.30 
I 
36 37.06 
I 

I 

136 
I 
I 

I Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
Date STA REP SEC Taxa n mg 
I 
I 
09APR93 NCE 3 3 Crustacea 1 0.06 09APR93 NCE 3 3 Mollusca 4 4.85 09APR93 NCE 3 3 Rhynchocoela 1 0.34 09APR93 NCE 3 3 Polychaeta 24 23.07 
30 2832 
I 
I 09APR93 NCE 3 10 Crustacea 2 0.74 09APR93 NCE 3 10 Mollusca 2 0.25 09APR93 NCE 3 10 Rhynchocoela 1 0.23 
09APR93 NCE 3 10 Polychaeta 29 31.48 
I 
34 32.70 
10JUL93 LOA 1 3 Crustacea 3 0.13 I 10JUL93 LOA 1 3 Polychaeta 33 9.03 
36 9.16
I 
10JUL93 LOA 1 10 Crustacea 1 0.08 10JUL93 LOA 1 10 Mollusca 9 3.16
I 	10JUL93 LQA 1 10 Other 1 17.46 10JUL93 LOA 1 10 Polychaeta 53 69.74 
I 	64 90.44 
I 
10JUL93 LOA 2 3 Crustacea 3 0.17 10JUL93 LOA 2 3 Mollusca 3 1.52 10JUL93 LOA 2 3 Polychaeta 16 4.90 
I 	22 6.59 
I 
10JUL93 LQA 2 10 Crustacea 1 0.02 
10JUL93 LOA 2 10 Rhynchocoela 1 0.89 10JUL93 LQA 2 10 Polychaeta 35 77.93 
I 
. · -; 

37 78.84 
I 
I 

137 
I 
I 
10JUL93 LOA 3 3 Crustacea 4 0.15 10JUL93 LOA 3 3 Mollusca 1 0.03 10JUL93 LOA 3 3 Polychaeta 11 2.79 
I 16 2.97 
I 
10JUL93 LOA 3 10 Crustacea 5 0.41 
10JUL93 LOA 3 10 Mollusca 8 1.36 10JUL93 LOA 3 10 Rhynchocoela 1 0.07 
I 
3 6.79
10JUL93 LOA 3 10 Other 
10JUL93 LOA 3 10 Polychaeta 64 78.88 
I 
81 87.51 
II 
I 
10JUL93 LOB 1 3 Mollusca 1 0.23 10JUL93 LOB 1 3 Other 3 0.78 10JUL93 LOB 1 3 Ophiuroidea 1 1.99 10JUL93 LOB 1 3 Polychaeta 32 6.32 
37 9.32 
I 10JUL93 LOB 1 10 Crustacea 1 0.02 10JUL93 LOB 1 10 Ophiuroidea 1 9.07 10JUL93 LOB 1 10 Polychaeta 27 14.95
I 
29 24.04 
I 10JUL93 LOB 2 3 Crustacea 1 0.09 
I 
10JUL93 LOB 2 3 Rhynchocoela 1 0.03 10JUL93 LOB 2 3 Polychaeta 18 4.23 
20 4.35 
I 10JUL93 LQB 2 10 Polychaeta 15 1.77 
I 
10JUL93 LOB 3 3 Crustacea 5 0.15 
10JUL93 LOB 3 3 Mollusca 1 0.10 10JUL93 LOB 3 3 Polychaeta 20 4.59 
I 26 4.84 
I 
138 
I 
Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
I 
10JUL93 LOB 3 10 Crustacea 3 0.22 10JUL93 LOB 3 10 Mollusca 2 0.16 10JUL93 LOB 3 10 Rhynchocoela 1 0.29 10JUL93 LOB 3 10 Polychaeta 54 89.75 
60 90.42 
I 
I 10JUL93 LQC 1 3 Crustacea 2 0.10 10JUL93 LQC 1 3 Mollusca 2 0.15 10JUL93 LQC 1 3 Rhynchocoela 1 0.33 
10JUL93 LQC 1 3 Polychaeta 21 3.55 
I 
26 4.13 
I 
10JUL93 LQC 1 10 Mollusca 1 0.07 10JUL93 LQC 1 10 Polychaeta 10 25.02 
11 25.09
I 
10JUL93 LQC 2 3 Crustacea 1 0.04 10JUL93 LQC 2 3 Rhynchocoela 2 0.52I 10JUL93 LQC 2 3 Other 1 0.06 10JUL93 LQC 2 3 Ophiuroidea 1 0.06 10JUL93 LQC 2 3 Polychaeta 25 5.90
I 
30 6.58 
I 10JUL93 LQC 2 10 Crustacea 1 0.12 
I 
10JUL93 LQC 2 10 Mollusca 1 0.03 10JUL93 LQC 2 10 Rhynchocoela 2 0.53 10JUL93 LQC 2 10 Polychaeta 50 8.18 
I 
54 8.86 
I 
10JUL93 LQC 3 3 Crustacea 1 0.02 10JUL93 LQC 3 3 Rhynchocoela 3 1.92 
I 
10JUL93 LQC 3 3 Other 2 0.03 10JUL93 LQC 3 3 Polychaeta 13 8.55 10JUL93 LQC 3 3 Sipunculida 1 0.33 
20 10.85 
I 
139 
I 
I Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
Date STA REP SEC Taxa n mg
I 
10JUL93 LQC 3 10 Crustacea 1 0.02I 10JUL93 LQC 3 10 Rhynchocoela 1 0.17 10JUL93 LQC 3 10 Polychaeta 15 31.10 
I 17 31.29 
10JUL93 NCC 1 3 Crustacea 1 0.03I 10JUL93 NCC 1 3 Polychaeta 8 6.56 
I 
9 6.59 
I 
10JUL93 NCC 1 10 Crustacea 2 0.48 10JUL93 NCC 1 10 Other 1 0.09 
10JUL93 NCC 1 10 Ophiuroidea 1 1.69 10JUL93 NCC 1 10 Polychaeta 16 40.41 
I 
I 20 42.67 10JUL93 NCC 2 3 Polychaeta 7 2.77 
10JUL93 NCC 2 10 Polychaeta 8 16.59 
I 10JUL93 NCC 3 3 Polychaeta 8 1.42 I 10JUL93 NCC 3 10 Polychaeta 7 5.83 10JUL93 NCO 1 3 Polychaeta 7 0.30
I 
10JUL93 NCO 1 10 Ophiuroidea 2 10.41 10JUL93 NCO 1 10 Polychaeta 7 0.29
I 
9 10.70 I 10JUL93 NCO 2 3 Crustacea 1 0.11 
I 
10JUL93 NCO 2 3 Mollusca 1 1.55 10JUL93 NCO 2 3 Polychaeta 13 0.35 
15 2.01 
I 10JUL93 NCO 2 10 Polychaeta 1 0.20 
I 
140 I 
I 

I Appendix IV: La Quinta Channel and Corpus Christi Bay biomass list. Continued. 
I 
Date STA REP SEC Taxa n mg 
I 
10JUL93 NCO 3 3 Mollusca 2 0.14 10JUL93 NCO 3 3 Ophiuroidea 1 0.61 10JUL93 NCO 3 3 Polychaeta 17 1.01 
I 20 1.76 
I 
10JUL93 NCO 3 10 Ophiuroidea 1 0.41 
10JUL93 NCO 3 10 Polychaeta 1 1.19 
I 
2 1.60 
I 
10JUL93 NCE 1 3 Crustacea 6 0.28 10JUL93 NCE 1 3 Rhynchocoela 2 0.51 10JUL93 NCE 1 3 Other 1· 0.52 10JUL93 NCE 1 3 Polychaeta 33 17.17 
I 
42 18.48 
I 10JUL93 NCE 1 10 Crustacea 6 0.22 
10JUL93 NCE 1 10 Other 1 0.06 10JUL93 NCE 1 10 Polychaeta 30 48.20
I 
37 48.48 
I 10JUL93 NCE 2 3 Crustacea 2 0.04 
I 
10JUL93 NCE 2 3 Rhynchocoela 1 0.17 10JUL93 NCE 2 3 Other 1 0.09 10JUL93 NCE 2 3 Ophiuroidea 1 0.14 10JUL93 NCE 2 3 Polychaeta 23 9.90 
I 28 10.34 
I 
10JUL93 NCE 2 10 Crustacea 2 0.08 
I 
10JUL93 NCE 2 10 Mollusca 1 0.03 10JUL93 NCE 2 10 Other 1 0.51 10JUL93 NCE 2 10 Ophiuroidea 1 13.77 
10JUL93 . NCE 2 10 Polychaeta 62 35.01 
I 
67 49.40 
I 

141 
I 
REP SEC Taxa n mgDate STA 
I 
10JUL93 NCE 3 3 Crustacea 3 0.46 10JUL93 NCE 3 3 Mollusca 1 0.03 
10JUL93 NCE 3 3 	Rhynchocoela 1 0.27 Other 5 0.39
10JUL93 NCE 3 3I 3 Polychaeta 29 27.13
10JUL93 NCE 3 
I 
39 28.28 
Crustacea 5 0.59 
I 
10JUL93 NCE 3 10 10JUL93 NCE 3 10 Rhynchocoela 2 0.45 
10JUL93 NCE 3 10 	Polychaeta 67 76.80 
I 
74 77.84 
1. 
I I I I I I I I 
I 
142 
I I I I 
1. I I I I I I I I I I I I I I