Fall 2011 Update: Spring Conditions - Northeast Shelf Ecosystem

Surface temperature and chlorophyll biomass values are shown from July 2010 to June 2011. The Northeast Shelf Large Marine Ecosystem experienced above average sea surface temperatures during summer into fall of 2010, moderating to average temperature through the winter and well into spring. The shelf began to warm to above average temperatures during early summer 2011. The chlorophyll conditions associated with summer and fall of last year were above average, but not significantly above the baseline to produce a detectable fall bloom. The spring bloom developed slightly later than usual and was of shorter duration than blooms in previous years. Zooplankton biomass levels were generally well below average for most of the preceding year with an indication of a rebound to higher levels during the May-June period of 2011.

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