Nutrient Cycling in Permeable Continental Shelf Sediments Exposed to Light

本研究将研究南大西洋湾（SAB）沉积物中营养物质的循环，考虑孔隙水和上覆水之间的非扩散（即平流或电流驱动）运输以及沉积物中微藻的光合作用。这项工作将包括检查控制孔隙水营养物质分布和清单的过程，估计底栖生物的营养物质通量，以及估计物理强迫（非扩散）孔隙水交换。这项工作将需要使用底栖生物室，它将提供底栖生物通量的现场测量，以及一个底栖生物窥视系统，它将提供沉积物营养概况的测量。SAB的结果将与西佛罗里达大陆架的测量结果进行比较。

ABSTRACTOCE-9906987This work will investigate the cycling of nutrients in South Atlantic Bight (SAB) sediments, taking into consideration non-diffusive (i.e. advective, or current driven) transport between the pore water and overlying water as well as microalgal photosynthetic production in the sediment. The work will include examination of the processes that control pore water nutrient distributions and inventories, estimates of the benthic flux of nutrients, and estimates of the physically forced (non-diffusive) pore water exchange. The work will entail use of benthic chambers which will provide in-situ measurements of benthic flux, and a benthic peeper system which will provide measurements of sediment nutrient profiles. The results for the SAB will be compared to measurements on the West Florida shelf.