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Light Regulation of Phytoplankton Growth in San Francisco Bay Studied Using a 3D Sediment Transport Model
In San Francisco Bay (SFB), light availability is largely determined by the concentration of suspended particulate matter (SPM) in the water column. SPM exhibits substantial variation with time, depth, and location. To study how SPM influences light and phytoplankton growth, we coupled a sediment tr...
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Published in: | Frontiers in Marine Science 2021-06, Vol.8 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | In San Francisco Bay (SFB), light availability is largely determined by the concentration of suspended particulate matter (SPM) in the water column. SPM exhibits substantial variation with time, depth, and location. To study how SPM influences light and phytoplankton growth, we coupled a sediment transport model with a hydrodynamic model and a biogeochemical model. The coupled models were used to simulate conditions for the year of 2011 with a focus on northern SFB. For comparison, two simulations were conducted with ecosystem processes driven by SPM concentrations supplied by the sediment transport model and by applying a constant SPM concentration of 20 mg l
–1
. The sediment transport model successfully reproduced the general pattern of SPM variation in northern SFB, which improved the chlorophyll-a simulation resulting from the biogeochemical model, with vertically integrated primary productivity varying greatly, from 40 g[C] m
–2
year
–1
over shoals to 160 g[C] m
–2
year
–1
in the deep channel. Primary productivity in northern SFB is influenced by euphotic zone depth (
Ze
). Our results show that
Ze
in shallow water regions ( |
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ISSN: | 2296-7745 2296-7745 |
DOI: | 10.3389/fmars.2021.633707 |