Fall 2007 Update: Subregion Comparison of Zooplankton

Graphs of zooplankton biomass

Mean zooplankton biomass, as measured by bio-volume, is shown for the four subregions during the first three standard bi-monthly time periods of the year. Zooplankton biomass during the first half of the year shows some common features between subregions. Zooplankton populations increased during spring in all subregions. There also appears to have been a shift in first half of the year zooplankton populations from the 1980s into the 1990s, with biomass increasing slightly in all subregions.

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