Особенности видовой, пространственной и трофической структуры макробентоса в лагунных экосистемах Ермолинской и Никольской губ (Кандалакшский залив, Белое море)

The features of species, spatial and trophic structure of macrobenthic sublittoral communities in two coastal lagoon ecosystems of the White sea are studied. Ermolinskaya and Nikolskaya Lips belong to the heavily silted lagoons with simplified trophic community structure of macrobenthos and the predominance of collecting detritus feeders. In sublittoral of lagoons studied were found 24 species of invertebrates, as well as 4 types of sea grasses and algae (Zostera marina, Cladophora sericea, Fucus vesiculosus and Chorda tomentosa). The lagoon ecosystem of Ermolinskaya Lip is characterized by the highest species diversity, total density and biomass of macrobenthos, and the lower indicators – the ecosystem of Nikolskaya Lip. In the lagoon of Nikolskaya Lip, better protected from sea waves and currents, there was a greater development of littoral eurygaline marine and brackish species of macrobenthos, and in the lagoon of Ermolinskaya Lip, less fenced off from the sea, more marine sublittoral species were found.