Cell size of Antarctic phytoplankton as a biogeochemical condition
Abstract Two contrasting high nutrient/low chlorophyll regions having different conditions that control phytoplankton production, and separated by an area of blooming, are found during summer in the vicinity of the South Shetland Islands (Antarctica). Low chlorophyll conditions occur either in Fe-ri...
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crcambridgeupr:10.1017/s0954102009990125 2024-03-03T08:38:35+00:00 Cell size of Antarctic phytoplankton as a biogeochemical condition Hewes, Christopher D. 2009 http://dx.doi.org/10.1017/s0954102009990125 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102009990125 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 21, issue 5, page 457-470 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2009 crcambridgeupr https://doi.org/10.1017/s0954102009990125 2024-02-08T08:36:03Z Abstract Two contrasting high nutrient/low chlorophyll regions having different conditions that control phytoplankton production, and separated by an area of blooming, are found during summer in the vicinity of the South Shetland Islands (Antarctica). Low chlorophyll conditions occur either in Fe-rich, deeply mixed and high salinity Weddell Sea shelf waters, or the Fe-poor, shoaled and low salinity Drake Passage Antarctic Circumpolar Current waters, while phytoplankton blooms are located between in mid salinity water. Contrasting phytoplankton communities were found to populate these different biogeochemical provinces. In data from six field seasons (1999–2007), nanoplankton (2–20 μm) were found to be dominant in the phytoplankton populations from light-controlled coastal waters, including blooms, with most chlorophyll found in the 2–5 μm size class. In contrast, the adjacent and presumably Fe-controlled Drake Passage waters were dominated by the microplankton (> 20 μm) size class. The asymmetrical distribution of phytoplankton size classes across the salinity gradient, when analysed independently of total chlorophyll concentration, supports the hypothesis that the different food web grazing dynamics are dependent upon biogeochemical provinces. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Drake Passage South Shetland Islands Weddell Sea Cambridge University Press Antarctic Weddell Sea Drake Passage South Shetland Islands Weddell Antarctic Science 21 5 457 470 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Hewes, Christopher D. Cell size of Antarctic phytoplankton as a biogeochemical condition |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Two contrasting high nutrient/low chlorophyll regions having different conditions that control phytoplankton production, and separated by an area of blooming, are found during summer in the vicinity of the South Shetland Islands (Antarctica). Low chlorophyll conditions occur either in Fe-rich, deeply mixed and high salinity Weddell Sea shelf waters, or the Fe-poor, shoaled and low salinity Drake Passage Antarctic Circumpolar Current waters, while phytoplankton blooms are located between in mid salinity water. Contrasting phytoplankton communities were found to populate these different biogeochemical provinces. In data from six field seasons (1999–2007), nanoplankton (2–20 μm) were found to be dominant in the phytoplankton populations from light-controlled coastal waters, including blooms, with most chlorophyll found in the 2–5 μm size class. In contrast, the adjacent and presumably Fe-controlled Drake Passage waters were dominated by the microplankton (> 20 μm) size class. The asymmetrical distribution of phytoplankton size classes across the salinity gradient, when analysed independently of total chlorophyll concentration, supports the hypothesis that the different food web grazing dynamics are dependent upon biogeochemical provinces. |
format |
Article in Journal/Newspaper |
author |
Hewes, Christopher D. |
author_facet |
Hewes, Christopher D. |
author_sort |
Hewes, Christopher D. |
title |
Cell size of Antarctic phytoplankton as a biogeochemical condition |
title_short |
Cell size of Antarctic phytoplankton as a biogeochemical condition |
title_full |
Cell size of Antarctic phytoplankton as a biogeochemical condition |
title_fullStr |
Cell size of Antarctic phytoplankton as a biogeochemical condition |
title_full_unstemmed |
Cell size of Antarctic phytoplankton as a biogeochemical condition |
title_sort |
cell size of antarctic phytoplankton as a biogeochemical condition |
publisher |
Cambridge University Press (CUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1017/s0954102009990125 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102009990125 |
geographic |
Antarctic Weddell Sea Drake Passage South Shetland Islands Weddell |
geographic_facet |
Antarctic Weddell Sea Drake Passage South Shetland Islands Weddell |
genre |
Antarc* Antarctic Antarctic Science Antarctica Drake Passage South Shetland Islands Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Drake Passage South Shetland Islands Weddell Sea |
op_source |
Antarctic Science volume 21, issue 5, page 457-470 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102009990125 |
container_title |
Antarctic Science |
container_volume |
21 |
container_issue |
5 |
container_start_page |
457 |
op_container_end_page |
470 |
_version_ |
1792506986644897792 |