Impact of Increased Terrigenous Sediment in Near-Shore Reef Systems
| dc.creator | Logie, Tyler | |
| dc.date.accessioned | 2021-04-21T15:47:11Z | |
| dc.date.available | 2021-04-21T15:47:11Z | |
| dc.date.issued | 2020-12 | |
| dc.description.abstract | Changes in the flux of terrestrial sediment into the ocean can cause marine ecosystems to suffer severe environmental stress. The physical effects of increased terrestrial erosion towards the shallow ocean can decrease light quality, increases the energy that reef builders must expend, and in extreme cases can cause burial of near-shore reefs. The influx of new terrestrial sediment can also have a notable effect on the chemistry of the ocean by increasing the flux of nutrients. This can alter the trophic state of the area, favor the expansion of algae over metazoan reef builders such as corals, and potentially cause a decrease in free oxygen available in the water column. The effects of increased terrestrial sediment flux can be seen most clearly during time intervals during which a spike in atmospheric CO2 concentration causes the global silicate weathering rate to increase. These events are commonly associated with global marine extinctions, as is the case at the Permian/Triassic boundary and during the Toarcian Ocean Anoxic Event. Isotope and trace element geochemistry can be used to reconstruct changes in the global silicate weathering rate, marine nutrient content, and fraction of terrestrial sediment in a marine setting. By combining these geochemical data with modern studies of reefs under sediment stress, the mechanisms driving reef collapses in the geologic record are better understood. This information can be applied to research attempting to predict the impact of increased sediment flux associated with climate change. | en_US |
| dc.description.department | Earth and Planetary Sciences | en_US |
| dc.description.sponsorship | Martindale, Rowan | |
| dc.identifier.uri | https://hdl.handle.net/2152/85378 | |
| dc.identifier.uri | http://dx.doi.org/10.26153/tsw/12342 | |
| dc.language.iso | eng | en_US |
| dc.relation.ispartof | Student Works | en_US |
| dc.rights.restriction | Open | en_US |
| dc.subject | Writing Flag Award | en_US |
| dc.subject | Reef | en_US |
| dc.subject | geochemistry | en_US |
| dc.subject | sedimentology | en_US |
| dc.subject | terrestrial sediment | en_US |
| dc.subject | climate change | en_US |
| dc.subject | nutrient | en_US |
| dc.subject | weathering | en_US |
| dc.subject | Toarcian | en_US |
| dc.subject | Triassic | en_US |
| dc.subject | extinction | en_US |
| dc.title | Impact of Increased Terrigenous Sediment in Near-Shore Reef Systems | en_US |
| dc.type | Article | en_US |