Benthic megafauna of the nearshore zone of Martel Inlet (king George Island, South Shetland Islands, Antarctica) : Depth zonation and underwater observations
The benthic megafauna from the soft bottoms of the shallow coastal zone of Martel Inlet (Admiralty Bay, King George Island, South Shetland Islands, Antarctica) was studied during three austral summers (1989/1990, 1990/1991 and 1994/1995) in relation to the bathymetric features. Surveying and samplin...
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| Veröffentlicht in: | Polar biology 2000-07, Vol.23 (8), p.580-588 |
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| creator | FERRAZ NONATO, E BRITO, T. A. S DE PAIVA, P. C PETTI, M. A. V CORBISIER, T. N |
| description | The benthic megafauna from the soft bottoms of the shallow coastal zone of Martel Inlet (Admiralty Bay, King George Island, South Shetland Islands, Antarctica) was studied during three austral summers (1989/1990, 1990/1991 and 1994/1995) in relation to the bathymetric features. Surveying and sampling, based on specimen counting and underwater observations, were undertaken by scuba-diving at depths down to 25m. The depth zonation appears to be influenced by the nature of the substrate and especially by the action of the ice. The multiple action of ice flows prevents the occurrence of sessile forms in the shallower areas, where a low-diversity community, dominated by motile animals, was found. In the area around 18m in depth, the action of icebergs generated faunistic and sedimentary patches of impacted and non-impacted areas. The more stable conditions prevailing below depths of 20-25m allowed the establishment of a more diversified epifauna, including many sessile forms. The interannual differences observed in the densities of the mobile isopod Serolis polita may be associated with the summer period when the sampling was undertaken.[PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1007/s003000000129 |
| format | Article |
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| ispartof | Polar biology, 2000-07, Vol.23 (8), p.580-588 |
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| language | eng |
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| source | SpringerNature Journals |
| subjects | Animal and plant ecology Animal, plant and microbial ecology Biodiversity Biological and medical sciences Coastal zone Fundamental and applied biological sciences. Psychology Icebergs Islands Isopoda Marine biology Marine ecology Sea water ecosystems Serolis polita Synecology Underwater Zonation |
| title | Benthic megafauna of the nearshore zone of Martel Inlet (king George Island, South Shetland Islands, Antarctica) : Depth zonation and underwater observations |
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