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Full-Text Articles in Physical Sciences and Mathematics
Modeling The Biogeochemical Cycle Of Selenium In The San Francisco Bay, Shannon L. Meseck
Modeling The Biogeochemical Cycle Of Selenium In The San Francisco Bay, Shannon L. Meseck
OES Theses and Dissertations
Due to recent concerns about selenium toxicity in the San Francisco Bay and the roles of refinery and San Joaquin River inputs on the selenium cycle, the model ECoS 3 (distributed from Plymouth Marine Laboratory, United Kingdom) was modified to simulate the biogeochemical cycle of selenium in the Northern Reach. The model is designed to simulate salinity, total suspended material, phytoplankton concentrations, dissolved selenium and its speciation (selenite, selenate, and organic selenide), and particulate selenium and its speciation (selenite + selenate, elemental selenium, and organic selenide). Actual data from 1999 were used to calibrate the model, while data from other …
Modeling Nutrient And Plankton Processes In The California Coastal Transition Zone, John Roland Moisan
Modeling Nutrient And Plankton Processes In The California Coastal Transition Zone, John Roland Moisan
OES Theses and Dissertations
Two time- and space-dependent, physical-bio-optical models have been developed for the California Coastal Transition Zone (CTZ) region with the overall objective of understanding and quantifying the processes th at contribute to the spatial and temporal development of nutrient and plankton distributions in the CTZ. The first of these models considers only time- and vertical processes at specific locations in the CTZ. The model food web components include: silicate, nitrate, ammonium, two phytoplankton size fractions, copepods, doliolids, euphausiids and a detritus pool. The wavelength dependent attenuation of the subsurface irradiance field, due to sea water, phytoplankton pigment concentrations and dissolved organic …