Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake
Amos Lake is a shallow, permanently cold, maritime Antarctic lake which is almost totally anoxic for much of the 9 month period of winter ice cover each year. The lake catchment is a source of considerable nutrient enrichment for the lake due to the presence, in summer, of large numbers of seals and...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/521550/ https://doi.org/10.1007/BF00263180 |
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ftnerc:oai:nora.nerc.ac.uk:521550 2023-05-15T13:41:42+02:00 Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake Ellis-Evans, J. Cynan Sanders, M.W. 1988-03 http://nora.nerc.ac.uk/id/eprint/521550/ https://doi.org/10.1007/BF00263180 unknown Springer Ellis-Evans, J. Cynan; Sanders, M.W. 1988 Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake. Polar Biology, 8 (4). 311-318. https://doi.org/10.1007/BF00263180 <https://doi.org/10.1007/BF00263180> Publication - Article PeerReviewed 1988 ftnerc https://doi.org/10.1007/BF00263180 2023-02-04T19:47:24Z Amos Lake is a shallow, permanently cold, maritime Antarctic lake which is almost totally anoxic for much of the 9 month period of winter ice cover each year. The lake catchment is a source of considerable nutrient enrichment for the lake due to the presence, in summer, of large numbers of seals and seabirds. A dense growth of phytoplankton was supported by this enrichment and, in turn, was a source of nutrients for the diverse microflora of the lake. The phytoplankton had a very high assimilation efficiency and an apparent high tolerance of anoxia. Bacterioplankton numbers and activity were closely linked to algal activity and both groups showed a strong seasonality typical of polar systems. Anaerobic bacteria (notably sulphate reducers and methanogens) were not as significant as anticipated, being largely restricted to the deeper lake trough region and possibly subject to substrate limitation later in the anoxic period. The results are discussed in the context of previous findings for other maritime Antarctic lakes. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Natural Environment Research Council: NERC Open Research Archive Antarctic Amos Lake ENVELOPE(-45.652,-45.652,-60.703,-60.703) Polar Biology 8 4 311 318 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Amos Lake is a shallow, permanently cold, maritime Antarctic lake which is almost totally anoxic for much of the 9 month period of winter ice cover each year. The lake catchment is a source of considerable nutrient enrichment for the lake due to the presence, in summer, of large numbers of seals and seabirds. A dense growth of phytoplankton was supported by this enrichment and, in turn, was a source of nutrients for the diverse microflora of the lake. The phytoplankton had a very high assimilation efficiency and an apparent high tolerance of anoxia. Bacterioplankton numbers and activity were closely linked to algal activity and both groups showed a strong seasonality typical of polar systems. Anaerobic bacteria (notably sulphate reducers and methanogens) were not as significant as anticipated, being largely restricted to the deeper lake trough region and possibly subject to substrate limitation later in the anoxic period. The results are discussed in the context of previous findings for other maritime Antarctic lakes. |
format |
Article in Journal/Newspaper |
author |
Ellis-Evans, J. Cynan Sanders, M.W. |
spellingShingle |
Ellis-Evans, J. Cynan Sanders, M.W. Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake |
author_facet |
Ellis-Evans, J. Cynan Sanders, M.W. |
author_sort |
Ellis-Evans, J. Cynan |
title |
Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake |
title_short |
Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake |
title_full |
Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake |
title_fullStr |
Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake |
title_full_unstemmed |
Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake |
title_sort |
observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime antarctic lake |
publisher |
Springer |
publishDate |
1988 |
url |
http://nora.nerc.ac.uk/id/eprint/521550/ https://doi.org/10.1007/BF00263180 |
long_lat |
ENVELOPE(-45.652,-45.652,-60.703,-60.703) |
geographic |
Antarctic Amos Lake |
geographic_facet |
Antarctic Amos Lake |
genre |
Antarc* Antarctic Polar Biology |
genre_facet |
Antarc* Antarctic Polar Biology |
op_relation |
Ellis-Evans, J. Cynan; Sanders, M.W. 1988 Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake. Polar Biology, 8 (4). 311-318. https://doi.org/10.1007/BF00263180 <https://doi.org/10.1007/BF00263180> |
op_doi |
https://doi.org/10.1007/BF00263180 |
container_title |
Polar Biology |
container_volume |
8 |
container_issue |
4 |
container_start_page |
311 |
op_container_end_page |
318 |
_version_ |
1766154103292952576 |