Comparative ecology of plankton communities in seven Antarctic oasis lakes
Similarities and differences in the biological limnology of several perennially ice-covered, amictic lakes within a 100 × 100 km grid of an Antarctic desert oasis have been identified. Most of the lakes possessed the cryptophyte Chroomonas lacustris as the dominant phytoplankter which was accompanie...
Published in: | Journal of Plankton Research |
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Oxford University Press
1982
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fthighwire:oai:open-archive.highwire.org:plankt:4/2/271 2023-05-15T13:33:45+02:00 Comparative ecology of plankton communities in seven Antarctic oasis lakes Parker, Bruce C. Simmons, George M. Seaburg, Kenneth G. Cathey, Daniel D. Allnutt, F.C.T. 1982-01-01 00:00:00.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/4/2/271 https://doi.org/10.1093/plankt/4.2.271 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/4/2/271 http://dx.doi.org/10.1093/plankt/4.2.271 Copyright (C) 1982, Oxford University Press Articles TEXT 1982 fthighwire https://doi.org/10.1093/plankt/4.2.271 2015-02-28T22:17:58Z Similarities and differences in the biological limnology of several perennially ice-covered, amictic lakes within a 100 × 100 km grid of an Antarctic desert oasis have been identified. Most of the lakes possessed the cryptophyte Chroomonas lacustris as the dominant phytoplankter which was accompanied by other algae, bacteria, yeasts, and ciliates. Maximum phytoplankton densities and extractable particulate chlorophyll a usually occurred well below the poorly transparent ice covers. The seven lakes varied among themselves but all displayed more oligotrophic than eutrophic values for five trophic state indicators. The high dissolved O 2 /CO 2 ratio in these lakes caused by supersaturated oxygen and the previously reported high proportion of extracellular photosynthate production by the phytoplankton raise the possibility of a significant amount of photorespiration compared to inorganic carbon incorporation for growth. In addition to the supersaturated oxygen, the plankton communities could be limited by low light intensities, hypersalinity (in some lakes), available nutrients, and grazing by protozooplankton. Text Antarc* Antarctic HighWire Press (Stanford University) Antarctic Journal of Plankton Research 4 2 271 286 |
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HighWire Press (Stanford University) |
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language |
English |
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Articles |
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Articles Parker, Bruce C. Simmons, George M. Seaburg, Kenneth G. Cathey, Daniel D. Allnutt, F.C.T. Comparative ecology of plankton communities in seven Antarctic oasis lakes |
topic_facet |
Articles |
description |
Similarities and differences in the biological limnology of several perennially ice-covered, amictic lakes within a 100 × 100 km grid of an Antarctic desert oasis have been identified. Most of the lakes possessed the cryptophyte Chroomonas lacustris as the dominant phytoplankter which was accompanied by other algae, bacteria, yeasts, and ciliates. Maximum phytoplankton densities and extractable particulate chlorophyll a usually occurred well below the poorly transparent ice covers. The seven lakes varied among themselves but all displayed more oligotrophic than eutrophic values for five trophic state indicators. The high dissolved O 2 /CO 2 ratio in these lakes caused by supersaturated oxygen and the previously reported high proportion of extracellular photosynthate production by the phytoplankton raise the possibility of a significant amount of photorespiration compared to inorganic carbon incorporation for growth. In addition to the supersaturated oxygen, the plankton communities could be limited by low light intensities, hypersalinity (in some lakes), available nutrients, and grazing by protozooplankton. |
format |
Text |
author |
Parker, Bruce C. Simmons, George M. Seaburg, Kenneth G. Cathey, Daniel D. Allnutt, F.C.T. |
author_facet |
Parker, Bruce C. Simmons, George M. Seaburg, Kenneth G. Cathey, Daniel D. Allnutt, F.C.T. |
author_sort |
Parker, Bruce C. |
title |
Comparative ecology of plankton communities in seven Antarctic oasis lakes |
title_short |
Comparative ecology of plankton communities in seven Antarctic oasis lakes |
title_full |
Comparative ecology of plankton communities in seven Antarctic oasis lakes |
title_fullStr |
Comparative ecology of plankton communities in seven Antarctic oasis lakes |
title_full_unstemmed |
Comparative ecology of plankton communities in seven Antarctic oasis lakes |
title_sort |
comparative ecology of plankton communities in seven antarctic oasis lakes |
publisher |
Oxford University Press |
publishDate |
1982 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/4/2/271 https://doi.org/10.1093/plankt/4.2.271 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/4/2/271 http://dx.doi.org/10.1093/plankt/4.2.271 |
op_rights |
Copyright (C) 1982, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/4.2.271 |
container_title |
Journal of Plankton Research |
container_volume |
4 |
container_issue |
2 |
container_start_page |
271 |
op_container_end_page |
286 |
_version_ |
1766045734147194880 |