Species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in King George Island, the South Shetland Islands, Antarctica
Abstract Glacial melt has a great influence on biological communities of the Antarctic Peninsula. Annual changes in heterotrophic flagellates from March 2008–March 2009 and effects of glacial melting on heterotrophic flagellates from December 2008–March 2009 were studied within the coastal zone of K...
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crcambridgeupr:10.1017/s0954102013000448 2024-03-03T08:37:07+00:00 Species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in King George Island, the South Shetland Islands, Antarctica Tikhonenkov, Denis 2013 http://dx.doi.org/10.1017/s0954102013000448 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102013000448 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 26, issue 2, page 133-144 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2013 crcambridgeupr https://doi.org/10.1017/s0954102013000448 2024-02-08T08:35:42Z Abstract Glacial melt has a great influence on biological communities of the Antarctic Peninsula. Annual changes in heterotrophic flagellates from March 2008–March 2009 and effects of glacial melting on heterotrophic flagellates from December 2008–March 2009 were studied within the coastal zone of King George Island. The maximum abundance and biomass occurred in November and December (950.6–1236.2 individuals ml -1 0.02–0.035 μg C ml -1 ), and the minimum in May and June (419.8–456.8 individuals ml -1 0.018–0.019 μg C ml -1 ). Forty-five species were identified. The diversity of choanoflagellates, euglenids, bicosoecids, kinetoplastids and incertae sedis flagellates was greatest. Glacial melt between December and April resulted in the freshening of the surface water at the Collins Bay, giving rise to a vertical gradient of salinity (from 26‰ at the surface to 34‰ at the near-bottom layer). The trophic, size and species structure of the heterotrophic flagellates was simplified due to freshening of the surface waters. Eurybiontic and cosmopolitan species were significantly enriched in the freshened surface layer, with prevalence of small-sized mobile bacterio-detritovorous forms. The simplification of structure of the assemblage of heterotrophic flagellates can affect the stability of biological communities. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica King George Island South Shetland Islands Cambridge University Press Antarctic The Antarctic Antarctic Peninsula King George Island South Shetland Islands Collins Bay ENVELOPE(-64.050,-64.050,-65.350,-65.350) Antarctic Science 26 2 133 144 |
institution |
Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Tikhonenkov, Denis Species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in King George Island, the South Shetland Islands, Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Glacial melt has a great influence on biological communities of the Antarctic Peninsula. Annual changes in heterotrophic flagellates from March 2008–March 2009 and effects of glacial melting on heterotrophic flagellates from December 2008–March 2009 were studied within the coastal zone of King George Island. The maximum abundance and biomass occurred in November and December (950.6–1236.2 individuals ml -1 0.02–0.035 μg C ml -1 ), and the minimum in May and June (419.8–456.8 individuals ml -1 0.018–0.019 μg C ml -1 ). Forty-five species were identified. The diversity of choanoflagellates, euglenids, bicosoecids, kinetoplastids and incertae sedis flagellates was greatest. Glacial melt between December and April resulted in the freshening of the surface water at the Collins Bay, giving rise to a vertical gradient of salinity (from 26‰ at the surface to 34‰ at the near-bottom layer). The trophic, size and species structure of the heterotrophic flagellates was simplified due to freshening of the surface waters. Eurybiontic and cosmopolitan species were significantly enriched in the freshened surface layer, with prevalence of small-sized mobile bacterio-detritovorous forms. The simplification of structure of the assemblage of heterotrophic flagellates can affect the stability of biological communities. |
format |
Article in Journal/Newspaper |
author |
Tikhonenkov, Denis |
author_facet |
Tikhonenkov, Denis |
author_sort |
Tikhonenkov, Denis |
title |
Species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in King George Island, the South Shetland Islands, Antarctica |
title_short |
Species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in King George Island, the South Shetland Islands, Antarctica |
title_full |
Species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in King George Island, the South Shetland Islands, Antarctica |
title_fullStr |
Species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in King George Island, the South Shetland Islands, Antarctica |
title_full_unstemmed |
Species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in King George Island, the South Shetland Islands, Antarctica |
title_sort |
species diversity and changes of communities of heterotrophic flagellates (protista) in response to glacial melt in king george island, the south shetland islands, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1017/s0954102013000448 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102013000448 |
long_lat |
ENVELOPE(-64.050,-64.050,-65.350,-65.350) |
geographic |
Antarctic The Antarctic Antarctic Peninsula King George Island South Shetland Islands Collins Bay |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula King George Island South Shetland Islands Collins Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica King George Island South Shetland Islands |
op_source |
Antarctic Science volume 26, issue 2, page 133-144 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102013000448 |
container_title |
Antarctic Science |
container_volume |
26 |
container_issue |
2 |
container_start_page |
133 |
op_container_end_page |
144 |
_version_ |
1792497169862754304 |