Features of the spatial structure of the macro- and meiobenthos community of the lagoon ecosystem of Kislaya Bay head (Gulf of Kandalaksha, White sea)

The spatial and species structure of meio- macrobenthos communities the Kislaya Bay (Gulf Kandalaksha, White Sea) lagoon ecosystem was analysed. A total 32 benthic organisms (including 11 invertebrate larvae) 9 seagrasses algae were found. Eumeiobenthos groups identified to level large taxa (nematodes, harpacticoids, ostracods, turbellaria). highest biomass mainly observed in lower horizon littoral zone at exit from (high Mytilus edulis populations). For meiobenthos middle upper horizons bayhead. This may indicate a complementary distribution macrobenthos: role meiofauna grew where development somewhat inhibited. An analysis similarity different habitats revealed differences between three – upper, middle, lower. Communities exhibited greater than horizon. structural characteristics community lengthwise with increasing water salinity, are less pronounced (especially when compared corresponding changes Chyornaya River estuary). is probably due milder salinity conditions versus estuary, impact this factor on aquatic and, accordingly, smaller change bayhead towards sea.