Species composition and distribution of echinoderms (Echinodermata) in the upper subtidal zone of Kola Bay, Barents Sea

Species composition and distribution of echinoderms (Echinodermata) in the upper subtidal zone of... The species composition and patterns of distribution of echinoderms from the upper sublittoral zone to depth of 30 m in the southern and middle of Kola Bay in the Barents Sea were studied. In total, five species of starfishes, four species of brittle stars, three species of sea urchins and one species of holothurians were recorded. From the beginning of 20th century, under the impact of climate change and anthropogenic effect, the number of echinoderm species in the surveyed area decreased by two times, and the fauna has a more boreal character against the background of the domination of boreal-arctic species. The occurrence, population density and biomass of echinoderms, especially of common species, were several times less in the middle bend of the bay than in the southern one. The causes of this phenomenon have been discussed. The quantitative data (frequency of occurrence, number and biomass) for most of the species of echinoderms living in Kola Bay are given for the first time. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Species composition and distribution of echinoderms (Echinodermata) in the upper subtidal zone of Kola Bay, Barents Sea

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Publisher
Springer Journals
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S106307401002001X
Publisher site
See Article on Publisher Site

Abstract

The species composition and patterns of distribution of echinoderms from the upper sublittoral zone to depth of 30 m in the southern and middle of Kola Bay in the Barents Sea were studied. In total, five species of starfishes, four species of brittle stars, three species of sea urchins and one species of holothurians were recorded. From the beginning of 20th century, under the impact of climate change and anthropogenic effect, the number of echinoderm species in the surveyed area decreased by two times, and the fauna has a more boreal character against the background of the domination of boreal-arctic species. The occurrence, population density and biomass of echinoderms, especially of common species, were several times less in the middle bend of the bay than in the southern one. The causes of this phenomenon have been discussed. The quantitative data (frequency of occurrence, number and biomass) for most of the species of echinoderms living in Kola Bay are given for the first time.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: May 8, 2010

References

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