Diversity of Macrobenthic Communities in the White Sea Estuaries

Chertoprud, M.V.; Udalov, A.A.; Stoljarov, A.P.; Borisov, R.R.

Авторы: Chertoprud M.V., Udalov A.A., Stoljarov A.P., Borisov R.R.
Журнал: Oceanology
Том: 44
Номер: 6
Год издания: 2004
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 901
Последняя страница: 911
Аннотация: The diversity of shallow–water macrozoobenthic communities is described based on materials concerning 11 estuaries of small rivers and streams in the Kandalaksha Bay of the White Sea. Using the Brown–Blanke and cluster analysis techniques, nine types of communities of these estuaries were distinguished depending mostly on the estuary size, salinity, substrate type, water velocity, and depth. In large estuaries, a kind of zonation of the macrobenthic communities along the main estuary axis was observed related to the pronounced salinity gradient; it is described in detail for the Chernaya River estuary, which was the most studied. Such zonation is completely absent in small stream estuaries with polypoikilohaline conditions, where a poor species assemblage of brackish–water amphipods of the Gammarus genus dominate. The prevalence of the riverine and lacustrine freshwater species (especially of larvae of Diptera and Trichoptera) in the fauna of small estuaries is shown. In contrast, brackish–water and marine species dominate over the majority of the estuarine communities with respect to abundance, while the role of freshwater species is insignificant.
Добавил в систему: Чертопруд Михаил Витальевич

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