This biotope map, covering the entire Barents Sea, has been compiled in collaboration between the Geological Survey of Norway, the Norwegian Institute of Marine Research (IMR) and the Russian Polar Research Institute of Marine Fisheries and Oceanography (PINRO) in the frame of the Norwegian-Russian Environmental Commission Workplan for 2011-2013 and 2013-2015.
Scientists, managers and commercial fishermen from Northern Norway, Finland and north-west Russia, White Sea area combined their efforts in the Kolarctic salmon project (2011-2013), with the aim of providing a better knowledge-base for the countries salmon management. Within this joint and unique effort bio-specimen were sampled along the North-Norwegian coast and in Russian Barents and White Seas generating the most comprehensive ecological and genetic datasets for Atlantic salmon (Salmo salar).
These maps show the number of days with polar bear habitat in the Barents Sea. They are based on polar bear telemetry data collected and analyzed (similar to Durner et al. 2009) by the Norwegian Polar Institute (Merkel & Aars in prep). Three seasons based on annual sea ice fluctuations and the biology of polar bears were defined to calculate available habitat.
During the last warming period (1998-2011) distinct trends in abundance of fish species from different zoogeographic groups were observed. Abundance of cold-water fish species (arctic, mainly arctic and arcto-boreal groups) decreased from 2000-2001 to 2010. But since 2011, slight increases in abundance of these groups have been observed.