MSI Technical Reports
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Item Ecological relationships between marine microorganisms and hydrocarbons in the OEI study area, Louisiana(0000-00-00) Oppenheimer, Carl H.; Miget, Russell J.; Kator, Howard I.Seven cruise projects were conducted in association with the Louisiana Offshore Ecological Investigation (OEI) to determine the relationships between microorganisms and hydrocarbons in surface waters. Techniques were developed to take surface samples and to determine bacterial numbers, hydrocarbon content, and the response of indigenous microorganisms to various added hydrocarbon molecules. The numbers of heterotrophic bacteria as determined by dilution techniques varied from 10 to 10,000 per ml. The hydrocarbon oxidizing organisms varied from 10 to 100,000 per liter with maxima in the month of January. Hydrocarbon concentrations varied from 0.03 to 0.6 micrograms per liter. There was no correlation between the numbers of oil degraders and hydrocarbon concentration found. This may be the result of the in situ low concentrations of hydrocarbons which would limit microbial response. The numbers of bacteria and hydrocarbons were similar to control areas in the eastern and western parts of the Gulf. BOD experiments conducted to measure the response of the microorganisms to various low and high molecular weight paraffinic and aromatic hydrocarbons indicated that all hydrocarbons were oxidized by some of the mixed indigenous microorganisms. These data suggest that an adequate inoculum was naturally present to respond to oil contamination in nature. The high numbers of hydrocarbon oxidizing microorganisms associated with January hydrographic data may indicate that the upland leaching and other contamination of hydrocarbons in the Mississippi River produce the noted microbial response for that month. The dominant saturated hydrocarbons and isoprenoids ranged from C-15 to C-41. Water from Timbalier Bay generally contained higher concentrations than offshore samples and exhibited a more pronounced odd-even preference in the range C-24 to C-33. GC-MS analysis of the dominant paraffins revealed a characteristic biomodal distribution dominated by C-17 and pristane and C-25 to C-35 with an unresolved envelope. No buildup of specific n-paraffin molecules was found, which data corresponded to BOD results of added hydrocarbons to indigenous microflora.Item A report on the deposition of petroleum tars and asphalts on the beaches of the northern Gulf of Mexico : with notes on the beach conditions and the associated biota(1955) Hildebrand, Henry H., 1922-2003; Gunter, Gordon, 1909-1998Item Checklist of the Marine Fauna and Flora Reported from the Region of Aransas Pass, Texas(1960) Trott, Lamarr B.Item The microbiological corrosion of iron(1960) Oppenheimer, Carl H.To study the properties of bacteria which are pertinent to the microbiological corrosion of iron in natural marine environments: (1) bacterial consumption of oxygen and subsequent production of oxygen differential corrosion cells, (2) the production of corrosive acids, and (3) microbial hydrogenase enzyme activity and its effect on the depolarization of metallic iron surfacesItem Checklist of the Invertebrate Animals Reported from the Region of Port Aransas, Texas(1960-07) Trott, Lamarr B.Item Effects of pharmaceutical wastes on growth of microalgae(1970) Van Baalen, C. (Chase), 1925-1986; Batterton, JohnThe purpose of this work was to assay samples of waste material from Puerto Rican pharmaceutical industries for inhibition of growth of algae. Two samples (noted as I and II) supplied to us were tested for toxicity to six microalgae. The test organisms, two blue-green algae, two green algae, and two diatoms [r]epresent three major divisions of algae.Item Ecology of a reef forming serpulid, Hydroides norvegica : final report(1970) Behrens, E. W. (Earl William), 1935-; April 1970Item Texas coastal zone biotopes : an ecography : interim report for the Bay and Estuary Management Program (CRMP)(1972) Oppenheimer, Carl H.; Gordon, Kennith G. (Kennith Glenn), 1930-Item Galveston Bay toxicity studies : October 1971-July 1972(1972) Oppenheimer, Carl H.; Brogden, William B.Item Item Water quality of Texas bays (nutrients, trace elements and toxic compounds)(1974) Oppenheimer, Carl H.; Brogden, William B.; Isensee, ThomasItem An interim report : sportfishing creel census pilot study, August 1973(1974) Bowman, Dinah; Brogden, William B.; Oppenheimer, Carl H.Item Hydrocarbons in seawater and organisms and microbiological investigations : final report submitted to the Gulf Universities Research Consortium for the offshore ecology investigations(1974) Oppenheimer, Carl H.[Part I:] A liquid-liquid extraction technique has been used to determine the amounts and distributions of n-paraffins and selected isoprenoid hydrocarbons in seawater collected from nearshore areas in the northeastern and central Gulf of Mexico. The dominant saturated hydrocarbons in seawater were n-paraffins with chain lengths from nC-15 to nC-41 as well as the isoprenoid hydrocarbons pristane and phytane. Concentrations of n-paraffins plus isoprenoids ranged from 0.03 to 0.60 [mu]g/l and were similar in value at nearshore study sites containing producing oil wells compared with "control" stations in the Gulf of Mexico displaced hundreds of miles from the study site. Seawater from Timbalier Bay generally contained higher concentrations of n-paraffins than the offshore samples and exhibited a more pronounced odd-even carbon preference in the range nC-25 to nC-33. This was attributed to the high load of particulate detritus presumably derived from terrestrial plants in Timbalier Bay water. Estimates of total saturated hydrocarbons in most samples were approximately 10 times larger than the concentrations of n-paraffins as determined by integration of the total paraffin signal.Item