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Research Document - 2004/073

Northwest Atlantic Plankton Trends 1959 to 2000

By Sameoto, D.

Abstract

Continuous Plankton Recorder Survey data collected for years 1959 to 2000 between Iceland and New England showed that significant changes occurred in the abundance and seasonal timing of the blooms of both phytoplankton and zooplankton taxa, phytoplankton increased and zooplankton decreased. The changes occurred after 1991 in the region west of longitude 45° W rather than, east of 45° W these changes were not observed. It is suggested that the plankton changes were related to changes in the Labrador Current system.

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