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Elected Topic for BGC Assignment- Estuarine Turbidity Maxima: Estuarine turbidity maximum

Chemical processes that occur: -Nutrient Element Dynamics:

Elevated turbidity can limit primary production (less light) so not consuming nutrients and chemical reactions (adsorption-desorption) at water and particle interfaces become more important in nutrient budget.

Nutrient adsorption-desorption from suspended particulate matter load Remobilize particles and show an estuarine maximum of particles and nutrients Increase the amount of nutrient delivery to the shelf Laboratory experiments show nitrate, silica, and ammonia are readily desorbed from particles, while phosphate can be active or conservative (simple dilution through estuary from source) in turbidity max zones. Anthropogenic sources of nitrogen and phosphorous are added more rapidly by desorption than natural sources in suspended particulate matter.

References- Zhang, J., Yu, Z., Liu, S., Xu, H., & Liu, M. (1997). Dynamics of Nutrient Elements in Three Estuaries of North China: The Luanhe, Shuangtaizihe, and Yalujiang. Estuaries, 20(1), 110-123, retrieved from http://www.jstor.org.ezproxy.proxy.library.oregonstate.edu/stable/1352725

Topic ideas for Biogeochemistry: Types of extremophiles Psychrophile Piezophile sources to explore to contribute to this article: (Michoud & Jebbar, 2016) Science Direct Search Oligotroph

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