Remarks to macrobenthic investigation of the Siberian shelf seas

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Presentation transcript:

Remarks to macrobenthic investigation of the Siberian shelf seas and deep Arctic basins Hendrik Deubel, Michael Klages, Eike Rachor Alfred Wegener Institute, Bremerhaven, Germany

RV Akademik Boris Pretov Expeditions ARK XI/1 1995 RV Polarstern Arctic Ocean 1996 IB Oden SIRRO 1997 - 2002 RV Akademik Boris Pretov ARK IX/4 1993 ARK VIII/3 1991 ARK XIV/1a 1998 Kara Sea Expedition 1993 RV Dmitri Mendeleyev ARK VIII/2 1991 ARK XIII/2 1997 ARK IXX/1a 2003

General objectives Analysis of the structure, species composition, abundance and biomass of biological communities. Investigation for food preferences of character species. How much organic carbon is utilized by the macrozoobenthos per time unit? How important is the input of freshwater for the biological communities? Biochemical investigations on the lipid metabolism. Model for energy flow and trophic relations between the pelagic and benthic systems.

Laptev Sea Kara Sea Arctic Ocean Macrobenthic biomass [AFDW] Mollusca others Crustacea Echinodermata Polychaeta Laptev Sea (northern) Kara Sea (southern) Arctic Ocean (central)

Distribution of the macrofauna along the continental slope (≈147°E) Echinodermata others Sipunculida Crustacea Mollusca Cnidaria Polychaeta depth species number abundance / m2 biomass [AFDW g/m2] Depth [m]