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Biogeographic and faunistic division of the Eurasian Polar Ocean based on distributions of Hydrozoa (Cnidaria)
Antsulevitch, A.E. (2015). Biogeographic and faunistic division of the Eurasian Polar Ocean based on distributions of Hydrozoa (Cnidaria). J. Mar. Biol. Ass. U.K. 95(8): 1533-1539. https://hdl.handle.net/10.1017/S0025315415000181
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, more
Also appears in:
Sukhotin, A.; Frost, M.; Hummel, H. (Ed.) (2015). Proceedings of the 49th European Marine Biology Symposium September 8-12, 2014, St. Petersburg, Russia. Journal of the Marine Biological Association of the United Kingdom, 95(8). Cambridge University Press: Cambridge. 1517-1721 pp., more
Peer reviewed article  

Available in  Author 

Keyword
    Marine
Author keywords
    Polar Ocean; Hydrozoa; distribution; biogeography

Author  Top 
  • Antsulevitch, A.E.

Abstract
    The hydroid and hydromedusa fauna of Russian Arctic seas, totalling 161 species, has been revised taxonomically and biogeographically. Diversity is highest in the Barents Sea, where 133 species are known to occur. Species composition of Hydrozoa throughout Russian Eurasia is decidedly uniform, with marked similarity among all regional faunistic lists. An assemblage of Arctic ubiquitists, a majority of them boreal-Arctic species, comprise the main element of hydrozoans in all Arctic seas. This faunistic main element is responsible for the faunal uniformity observed from one sea to the next across thousands of kilometres along the northern Eurasian coast. Exceptions occur in marginal regions including western parts of the Barents Sea and south-eastern parts of the Chukchi Sea, where species distribution area contours (named as ‘synperates’) come close together. Based on a biogeographic analysis of faunistic data and species distributions of Hydrozoa, all temperate and cold waters of the Eurasian seas and the Central Polar Basin were referred to a single Arctatlantic biogeographic realm. Biogeographic subdivisions within this realm have rather low hierarchical rank, the result of low endemism, high faunal similarity across the northern seas, and predominance of a North Atlantic fauna in Russian northern seas as far as the easternmost Chukchi Sea.

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