The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake
The filamentous chlorophyte Spirogyra forms a mat covering extensive areas of Spirogyra Lake, a small, shallow, Antarctic lake. It has an annual growth pattern, with a maximum standing crop of 400 μg chlorophyll-α m-2 during the ice-free summer period. Nutrient concentrations were low and there was...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/521644/ https://doi.org/10.1007/BF00264719 |
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ftnerc:oai:nora.nerc.ac.uk:521644 2023-05-15T13:41:42+02:00 The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake Hawes, Ian 1988-07 http://nora.nerc.ac.uk/id/eprint/521644/ https://doi.org/10.1007/BF00264719 unknown Springer Hawes, Ian. 1988 The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake. Polar Biology, 8 (6). 429-437. https://doi.org/10.1007/BF00264719 <https://doi.org/10.1007/BF00264719> Botany Publication - Article PeerReviewed 1988 ftnerc https://doi.org/10.1007/BF00264719 2023-02-04T19:47:27Z The filamentous chlorophyte Spirogyra forms a mat covering extensive areas of Spirogyra Lake, a small, shallow, Antarctic lake. It has an annual growth pattern, with a maximum standing crop of 400 μg chlorophyll-α m-2 during the ice-free summer period. Nutrient concentrations were low and there was evidence for P-limitation. The attainment of such a high standing crop was probably dependent on the lake's high specific dilution rate. Radiation flux was very low under winter ice cover and Spirogyra died back almost completely. The lake water became hypoxic and inorganic nutrients accumulated in both the water column and overwintering algal filaments. Spore formation was not observed, but changes in the composition of filaments indicated that polysaccharides, which had accumulated in summer, were depleted over the long, ice-covered winter period. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Natural Environment Research Council: NERC Open Research Archive Antarctic Spirogyra Lake ENVELOPE(-45.647,-45.647,-60.701,-60.701) Polar Biology 8 6 429 437 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Botany |
spellingShingle |
Botany Hawes, Ian The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake |
topic_facet |
Botany |
description |
The filamentous chlorophyte Spirogyra forms a mat covering extensive areas of Spirogyra Lake, a small, shallow, Antarctic lake. It has an annual growth pattern, with a maximum standing crop of 400 μg chlorophyll-α m-2 during the ice-free summer period. Nutrient concentrations were low and there was evidence for P-limitation. The attainment of such a high standing crop was probably dependent on the lake's high specific dilution rate. Radiation flux was very low under winter ice cover and Spirogyra died back almost completely. The lake water became hypoxic and inorganic nutrients accumulated in both the water column and overwintering algal filaments. Spore formation was not observed, but changes in the composition of filaments indicated that polysaccharides, which had accumulated in summer, were depleted over the long, ice-covered winter period. |
format |
Article in Journal/Newspaper |
author |
Hawes, Ian |
author_facet |
Hawes, Ian |
author_sort |
Hawes, Ian |
title |
The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake |
title_short |
The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake |
title_full |
The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake |
title_fullStr |
The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake |
title_full_unstemmed |
The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake |
title_sort |
seasonal dynamics of spirogyra in a shallow, maritime antarctic lake |
publisher |
Springer |
publishDate |
1988 |
url |
http://nora.nerc.ac.uk/id/eprint/521644/ https://doi.org/10.1007/BF00264719 |
long_lat |
ENVELOPE(-45.647,-45.647,-60.701,-60.701) |
geographic |
Antarctic Spirogyra Lake |
geographic_facet |
Antarctic Spirogyra Lake |
genre |
Antarc* Antarctic Polar Biology |
genre_facet |
Antarc* Antarctic Polar Biology |
op_relation |
Hawes, Ian. 1988 The seasonal dynamics of Spirogyra in a shallow, maritime Antarctic lake. Polar Biology, 8 (6). 429-437. https://doi.org/10.1007/BF00264719 <https://doi.org/10.1007/BF00264719> |
op_doi |
https://doi.org/10.1007/BF00264719 |
container_title |
Polar Biology |
container_volume |
8 |
container_issue |
6 |
container_start_page |
429 |
op_container_end_page |
437 |
_version_ |
1766154145803272192 |