A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica
Meiofaunal communities of three small, shallow freshwater habitats sampled during the austral summer of 2013 in Greenwich Island, South Shetland Islands, Antarctica, are reported. Communities are dominated by tardigrades (85%), nematodes (11%), and rotifers (3%). Collembola, Oligochaeta, crustacean...
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ftarcticportal:oai:generic.eprints.org:2565 2023-11-12T03:59:41+01:00 A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica Silva, Soraya J. Cordovés, Minerva González, Nory González, Leinny 2015-03 application/pdf http://library.arcticportal.org/2565/ http://library.arcticportal.org/2565/1/A20150114.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2565/1/A20150114.pdf Silva, Soraya J. and Cordovés, Minerva and González, Nory and González, Leinny (2015) A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica. Advances in Polar Science, 26 (1). pp. 107-112. Fauna Article PeerReviewed 2015 ftarcticportal 2023-11-01T23:54:37Z Meiofaunal communities of three small, shallow freshwater habitats sampled during the austral summer of 2013 in Greenwich Island, South Shetland Islands, Antarctica, are reported. Communities are dominated by tardigrades (85%), nematodes (11%), and rotifers (3%). Collembola, Oligochaeta, crustacean larvae (nauplii) and unidentified organisms account for 0.3%. Total meiofaunal densities reach 11 770 ind∙cm-2, with mean densities (ind∙cm−2) of 1 365.83 ± 2 716.65 (Zone A), 523.67 ± 1 166.48(Zone B) and 72.17 ± 110.78 (Zone C). Given the age of freshwater habitats, and the general lack of higher-trophic level predatory taxa, those species we report are likely early stage colonizers, and these communities are at an early stage of ecological succession. Non-parametrical analysis revealed the main variables influencing meiofaunal density and distribution are related to granulometric characteristics of sediments and microphytobenthic biomass. There were close relationships between meiofaunal abundance and microphytobenthic biomass, which indicates that benthic microalgae significantly influence meiofaunal distribution. A strong correlation between nematode abundance and the percentage of silt, clay and carbon in the sediment was also shown by canonical correspondence analysis and Spearman rank correlation. Article in Journal/Newspaper Advances in Polar Science Antarc* Antarctica Greenwich Island Polar Science Polar Science South Shetland Islands Arctic Portal Library |
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Fauna |
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Fauna Silva, Soraya J. Cordovés, Minerva González, Nory González, Leinny A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica |
topic_facet |
Fauna |
description |
Meiofaunal communities of three small, shallow freshwater habitats sampled during the austral summer of 2013 in Greenwich Island, South Shetland Islands, Antarctica, are reported. Communities are dominated by tardigrades (85%), nematodes (11%), and rotifers (3%). Collembola, Oligochaeta, crustacean larvae (nauplii) and unidentified organisms account for 0.3%. Total meiofaunal densities reach 11 770 ind∙cm-2, with mean densities (ind∙cm−2) of 1 365.83 ± 2 716.65 (Zone A), 523.67 ± 1 166.48(Zone B) and 72.17 ± 110.78 (Zone C). Given the age of freshwater habitats, and the general lack of higher-trophic level predatory taxa, those species we report are likely early stage colonizers, and these communities are at an early stage of ecological succession. Non-parametrical analysis revealed the main variables influencing meiofaunal density and distribution are related to granulometric characteristics of sediments and microphytobenthic biomass. There were close relationships between meiofaunal abundance and microphytobenthic biomass, which indicates that benthic microalgae significantly influence meiofaunal distribution. A strong correlation between nematode abundance and the percentage of silt, clay and carbon in the sediment was also shown by canonical correspondence analysis and Spearman rank correlation. |
format |
Article in Journal/Newspaper |
author |
Silva, Soraya J. Cordovés, Minerva González, Nory González, Leinny |
author_facet |
Silva, Soraya J. Cordovés, Minerva González, Nory González, Leinny |
author_sort |
Silva, Soraya J. |
title |
A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica |
title_short |
A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica |
title_full |
A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica |
title_fullStr |
A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica |
title_full_unstemmed |
A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica |
title_sort |
preliminary study of freshwater meiofaunal communities at greenwich island, south shetland islands, antarctica |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2015 |
url |
http://library.arcticportal.org/2565/ http://library.arcticportal.org/2565/1/A20150114.pdf |
genre |
Advances in Polar Science Antarc* Antarctica Greenwich Island Polar Science Polar Science South Shetland Islands |
genre_facet |
Advances in Polar Science Antarc* Antarctica Greenwich Island Polar Science Polar Science South Shetland Islands |
op_relation |
http://library.arcticportal.org/2565/1/A20150114.pdf Silva, Soraya J. and Cordovés, Minerva and González, Nory and González, Leinny (2015) A preliminary study of freshwater meiofaunal communities at Greenwich Island, South Shetland Islands, Antarctica. Advances in Polar Science, 26 (1). pp. 107-112. |
_version_ |
1782332980521336832 |