The phytoplankton component of seston in San Francisco Bay
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Abstract
Phytoplankton biomass (as carbon) was estimated from chlorophyll a concentrations (Chla) and a mean value for the ratio of phytoplankton carbon to chlorophyll a in San Francisco Bay. The ratio was determined as the slope of a Model II regression of POC' against (Chla), where POC' is total particulate organic carbon minus sediment-associated non-phytoplankton carbon. Samples from 30 fixed sites in the channel and lateral shoals of San Francisco Bay were collected once or twice a month from April to November 1980, and at irregular intervals in South Bay during 1984 and 1985. For all data the calculated mean value of phytoplankton C:Chla was 51 (95% confidence interval = 47-54). No significant differences were found in the C:Chla ratio between shallow and deep sites (where light availability differs) or between northern and southern San Francisco Bay (where phytoplankton community composition differs). Using the mean C:Chla ratio of 51, we calculated that phytoplankton biomass constitutes about one third of seston carbon under most circumstances, but this fraction ranges from about 95% during phytoplankton blooms to less than 20% during spring periods of low phytoplankton biomass and high suspended sediment concentration. ?? 1987.
Publication type | Article |
---|---|
Publication Subtype | Journal Article |
Title | The phytoplankton component of seston in San Francisco Bay |
Series title | Netherlands Journal of Sea Research |
Volume | 21 |
Issue | 1 |
Year Published | 1987 |
Language | English |
Contributing office(s) | California Water Science Center, San Francisco Bay-Delta, Pacific Regional Director's Office |
Larger Work Type | Article |
Larger Work Subtype | Journal Article |
Larger Work Title | Netherlands Journal of Sea Research |
First page | 25 |
Last page | 33 |
Online Only (Y/N) | N |
Additional Online Files (Y/N) | N |
Google Analytic Metrics | Metrics page |