Структура прибрежной экосистемы льда в зоне взаимодействия река-море.

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Мельников И.А., Дикарев С.Н., C.Н. Егоров, Колосова Е.Г., Житина Л.С.

The structure of the formation of a coastal ice ecosystem in the zone of the riverine water discharge (February–April 2003, Chupa Bight in Kandalaksha Bay of the White Sea) was studied. It was shown that, in the winter, in the zone of the river–sea water mixing, a complex multicomponent ecosystem is formed, which consists of: (1) ice with salinities of 0.5–0.8‰ and 4.3–4.5‰, (2) an under-ice water–crystalloid layer 50–60 cm thick with a salinity of 2.86–3.04‰, and (3) a seawater layer with a salinity up to 27‰. Fresh and brackish water characteristics are well manifested in the coastal area, while marine waters are characteristic of the middle part of the bay. This three-layered water–ice system is stable during the entire winter period and is destroyed only with the spring melting. Remarkable differences in the species composition were found in the ice phytocoeno-sis: the domination of fresh-water species (mainly Chlorophyta) in the near-shore ice and the domination of Bacillariophyta marine algae in the fast ice. A low abundance of invertebrate animals in the ice zoocoenosis was found during the entire period of observations.

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  • Авторы: Мельников И.А., Дикарев С.Н., C.Н. Егоров, Колосова Е.Г., Житина Л.С.
  • Издание: Журнал "Океанология", 45(4); Oceanology, Vol. 45, No. 4, 2005, pp. 511–519. Translated from Okeanologiya, Vol. 45, No. 4, 2005, pp. 542–550. Original Russian Text Copyright © 2005 by Melnikov, Dikarev, Egorov, Kolosova, Zhitina. English Translation Copyright © 2005 by Pleiades Publishing, Inc.
  • Год издания: 2005
  • Страницы: 542-550
  • Аннотация на английском языке: The structure of the formation of a coastal ice ecosystem in the zone of the riverine water discharge (February–April 2003, Chupa Bight in Kandalaksha Bay of the White Sea) was studied. It was shown that, in the winter, in the zone of the river–sea water mixing, a complex multicomponent ecosystem is formed, which consists of: (1) ice with salinities of 0.5–0.8‰ and 4.3–4.5‰, (2) an under-ice water–crystalloid layer 50–60 cm thick with a salinity of 2.86–3.04‰, and (3) a seawater layer with a salinity up to 27‰. Fresh and brackish water characteristics are well manifested in the coastal area, while marine waters are characteristic of the middle part of the bay. This three-layered water–ice system is stable during the entire winter period and is destroyed only with the spring melting. Remarkable differences in the species composition were found in the ice phytocoeno-sis: the domination of fresh-water species (mainly Chlorophyta) in the near-shore ice and the domination of Bacillariophyta marine algae in the fast ice. A low abundance of invertebrate animals in the ice zoocoenosis was found during the entire period of observations.
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