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

2. RV Akademik Boris Pretov
Expeditions
ARK XI/1 1995
RV Polarstern
Arctic Ocean 1996
IB Oden
SIRRO
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

3. 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.

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

5. 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]