| 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. |
| Genre: | Article |
| ProdID: | 70015249 |
| Citation Author: | Wienke, S. M.; Cloern, J. E. |
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| Citation End Page: | 33 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Netherlands Journal of Sea Research |
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| Citation Number Of Pages: | 9 |
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| Citation Search Results Text: | The phytoplankton component of seston in San Francisco Bay; 1987; Article; Journal; Netherlands Journal of Sea Research; Wienke, S. M.; Cloern, J. E. |
| Citation Start Page: | 25 |
| Citation Volume: | 21 |
| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | The phytoplankton component of seston in San Francisco Bay; 1987; Article; Journal; Netherlands Journal of Sea Research; Wienke, S. M.; Cloern, J. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1987 00:00 -0600 |
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