Ecosystems Dynamics & Assessment : Conditions of the Northeast Shelf Ecosystem, Spring 2016

Fall Bloom Development on the Northeast Shelf

There were well-developed fall blooms detected in the Gulf of Maine and Georges Bank areas, though the bloom in the Gulf of Maine started later in the year than typical (see figures). The blooms were of shorter duration than the climatological pattern and had average bloom chlorophyll levels that matched climatological levels of 1.7 - 1.8 mg m-3 during the peak of the bloom. The Scotian Shelf subregion, which typically has a fall bloom, had a highly variable pattern of chlorophyll concentrations. A distinct fall bloom is not typical of the Middle Atlantic Bight area, but a bloom developed this year during July, with bloom chlorophyll levels peaking at 1.8 mg m-3. The composite depiction of the bloom pattern for the Northeast Shelf reflects the fall blooms in the Gulf of Maine and Georges Bank, but can also be seen to affect the Middle Atlantic Bight.

Georges Bank
Gulf of Maine
Middle Atlantic Bight
Northeast Shelf
Scotian Shelf
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