Relations between ice physics, chemistry and ice algal activity in the Chukchi and Beaufort Seas

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Physical-biological control of primary production in Beaufort and Chukchi Sea ice: Its contribution to shelf-basin interactions in the western Arctic

Rolf Gradinger & Hajo Eicken, University of Alaska Fairbanks

Sea ice is a crucial habitat in polar areas. Sea ice algae contribute significantly to primary production in many parts of the Arctic and, thereby, provide a food source for seasonal or permanent inhabitants of sea ice and the ice-water interface. Ice algae exhibit strong seasonality in their activity, controlled to a large extent by abiotic forcing. It remains unresolved to which extent various factors contribute to the spatial and temporal variability of ice-associated primary production.

Our study tries to elucidate the role of sea ice structure, nutrient advection and ice algal activity.

We contribute to the SBI initiative by providing physical and biological properties of the sea ice in the Chukchi and Beaufort Seas.

This material is based upon work supported by the National Science Foundation under grant OPP-0125464. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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