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Admiralty Bay Benthos Diversity: A census of a complex polar ecosystem
Sicinski, J.; Jazdzewski, K.; De Broyer, C.; Presler, P.; Ligowski, R.; Nonato, E.F.; Corbisier, T.N.; Petti, M.A.V.; Brito, T.A.S.; Lavrado, H.P.; Blazewicz-Paszkowycz, M.; Pabis, K.; Jazdzewska, A.; Campos, L.S. (2011). Admiralty Bay Benthos Diversity: A census of a complex polar ecosystem. Deep-Sea Res., Part 2, Top. Stud. Oceanogr. 58(1-2): 30-48. dx.doi.org/10.1016/j.dsr2.2010.09.005
In: Deep-Sea Research, Part II. Topical Studies in Oceanography. Pergamon: Oxford. ISSN 0967-0645; e-ISSN 1879-0100, more
Peer reviewed article  
Available in  Authors 
Keyword
    Marine/Coastal
Author keywords
    Antarctica; King George Island; Admiralty Bay; Benthos; Biodiversity;
Authors  Top 
  • Sicinski, J.
  • Jazdzewski, K.
  • De Broyer, C., more
  • Presler, P.
  • Ligowski, R.
  • Nonato, E.F.
  • Corbisier, T.N.
  • Petti, M.A.V.
  • Brito, T.A.S.
  • Lavrado, H.P.
  • Blazewicz-Paszkowycz, M.
  • Pabis, K.
  • Jazdzewska, A.
  • Campos, L.S.
Abstract
    A thorough census of Admiralty Bay benthic biodiversity was completed through the synthesis of data, acquired from more than 30 years of observations. Most of the available records arise from successive Polish and Brazilian Antarctic expeditions organized since 1977 and 1982, respectively, but also include new data from joint collecting efforts during the International Polar Year (2007-2009). Geological and hydrological characteristics of Admiralty Bay and a comprehensive species checklist with detailed data on the distribution and nature of the benthic communities are provided. Approximately 1300 species of benthic organisms (excluding bacteria, fungi and parasites) were recorded from the bay's entire depth range (0-500 m). Generalized classifications and the descriptions of soft-bottom and hard-bottom invertebrate communities are presented. A time-series analysis showed seasonal and interannual changes in the shallow benthic communities, likely to be related to ice formation and ice melt within the bay. As one of the best studied regions in the maritime Antarctic Admiralty Bay represents a legacy site, where continued, systematically integrated data sampling can evaluate the effects of climate change on marine life. Both high species richness and high assemblage diversity of the Admiralty Bay shelf benthic community have been documented against the background of habitat heterogeneity.
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