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Similar soft-bottom polychaete diversity in Arctic and Antarctic marine inlets
Wlodarska-Kowalczuk, M.; Sicinski, J.; Gromisz, S.; Kendall, M.A.; Dahle, S. (2007). Similar soft-bottom polychaete diversity in Arctic and Antarctic marine inlets. Mar. Biol. (Berl.) 151(2): 607-616. dx.doi.org/10.1007/s00227-006-0496-9
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, more
Peer reviewed article  

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  • Wlodarska-Kowalczuk, M., more
  • Sicinski, J.
  • Gromisz, S.
  • Kendall, M.A.
  • Dahle, S., more

Abstract
    The diversity of soft-bottom polychaete assemblages in one Antarctic (Admiralty Bay) and two Arctic (Kongsfjord and van Mijenfjord) localities was compared. The data sets included 79 (Admiralty Bay), 80 (Kongsfjord) and 44 (van Mijenfjord) samples collected with use of 0.1 m2 van Veen grab. The number of species per sample in Kongsfjord (mean 19.9 ± 8.0 SD) was higher than that in Van Mijenfjord (13.7 ± 8.3) or Admiralty Bay (15.7 ± 9.4). The differences in species numbers reflected differences in numbers of individuals in samples: 310.4 ind/0.1 m2 ± 178.0 in Kongsfjord, 132.7 ind/0.1 m2 ± 88.7 in Van Mijenfjord and 138.9 ind/0.1 m2 ± 91.5 in Admiralty Bay. The Hurlbert diversity for 50 individuals (ES [50]) was similar at all sites: 10.7 ± 3.4 in Kongsfjord, 9.7 ± 4.2 in van Mijenfjord, 10.5 ± 4.9 in Admiralty Bay. The shape of species accumulation curves was also similar for all localities. There was no significant difference (at P < 0.05) either in the total number of species or in species richness as estimated by Chao1 and Chao2 estimators. The generic and family richness at three sites was also similar. We found no substantial differences in the distribution of species among families. At both poles Terebellidae, Ampharetidae, Maldanidae, Spionidae and Polynoidae were dominant in terms of species numbers. The similarity of infaunal polychaete diversity at the polar sites studied contrasts with the substantial differences reported for epi-megafauna. Our study suggests that the patterns of diversity of polar benthic communities are shaped by patterns of habitat heterogeneity which appears to mask any historical processes.

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