Arctic Frontiers 2009, Thu 22.01, Session IV: Global warming and trophic structure of marine Arctic ecosystems Chair: Kriss Rokkan Iversen 13:00 Key lecture VII: Jacqueline Grebmeier: Benthic carbon cycling in the Chukchi Sea: status, trends and climate warming 13:30 Key lecture VIII: Michael Carroll: Trophic structure of arctic ecosystems related to variable food supplies 14:00 M. Noyon et al.: Potential impact of climate change on the pelagic amphipod Themisto libellula and the energy transfer through the food web (Javascript is required to view Mediasite content)