Main Factors in Formation of Planctonic Communities Structure in the Northern Barents Sea under Warming Period in Arctic

Abstract

Species composition, distribution reproduction, age composition and biomass of copepods in the northern Barents Sea in 2008-2011 under warming of Arctic are considered in the paper. Main factors which impact on main characteristics of zooplaktton communities are revealed. Dynamics of abundance of Calanus finmarchicus mainly determined by intensity of warm water flux to the Barents Sea, while for rate of ice melting and predation on older individuals and females by pelagic fishes were the most important for C.lgacialis.