Interagency Ecological Program Spring Season report
- Chlorophyll is an indicator of phytoplankton production, which is low during the Spring.
- Phytoplankton are the base of the pelagic food web. It is sampled monthly by DWR’s Environmental Monitoring Program.
- The invasion of the clam Potamocorbula amurensis caused a decline in phytoplankton and zooplankton after 1986 – especially in Suisun Bay.
Average Spring Chlorophyll by Region
In 2018, San Pablo Bay chlorophyll was similar to the long-term average.
In 2018, Suisun Bay chlorophyll was also about average.
In 2018, the Delta had lower clorophyll than average.
For more information see: Cahoon, T. and T. Brown. 2018. Phytoplankton, Chlorophyll-a and Pheophytin-a Status and Trends 2017. IEP Newsletter 32(1):14-20.