Spring 2008 Update: Trends in Fall Conditions-Northeast Shelf Ecosystem

Graphs of SST on the NE shelf

Summer and fall SSTs do not appear to be trending over the time period analyzed. There has been an upturn in chlorophyll concentration or chlorophyll intensity during summer and fall. Summer chlorophyll intensity remains approximately 75% of the fall bloom level. The variation in the duration of the summer inter-bloom period resulted in a higher magnitude summer period and a lower magnitude fall bloom. Summer (Jul/Aug) zooplankton biomass appears to be decreasing and is below the long-term mean. The late summer (Sep/Oct) and fall (Nov/Dec) zooplankton biomasses appear to be stable and above the long-term mean.

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