ИСТИНА

A thorough analysis of harpacticoid biogeography is hampered by the lack of sufficient data, especially from the Arctic regions. In particular, very little is known of the harpacticoids of the East Siberian and Chukchi Seas. We present the results of preliminary analysis of the material collected during several surveys in 2018 at the depths ranged from 0 to 800 m. Over twenty species new for the region and over ten species seemingly new for science have been revealed. Check-list of marine harpacticoids known from these seas is compiled, and compared with other Arctic seas. Basing on these data, the biogeographic pattern of the Arctic seas is quantified, and is compared with the subdivision systems based on the oceanographic characteristics and on associated macrofaunal communities.