Plankton sampling. Photo: Norwegian Polar Institute

Among phytoplankton species in the Barents Sea, there tends to be large inter-annual and geographical variation in patterns of distribution and abundance.  However, the overall annual pattern of succession is quite stable, despite variability between years for abiotic factors such as temperature.  Formation of the spring bloom varies between years, and is largely determined by the degree of stabilization in upper layers of the water column.

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