Nitrate- and silicate-competition among antarctic phytoplankton
Natural phytoplankton from antarctic waters in the Drake Passage were used for competition experiments in semicontinuous cultures. The outcome of interspecific competition for silicate and nitrate was studied at a range of Si:N ratios (from 2.6:1 to 425:1) and at three different dilution rates. For...
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ftpubman:oai:pure.mpg.de:item_3165771 2023-08-27T04:05:33+02:00 Nitrate- and silicate-competition among antarctic phytoplankton Sommer, U. 1986-06 application/pdf http://hdl.handle.net/21.11116/0000-0004-BABE-5 http://hdl.handle.net/21.11116/0000-0004-BAC0-1 eng eng http://hdl.handle.net/21.11116/0000-0004-BABE-5 http://hdl.handle.net/21.11116/0000-0004-BAC0-1 Marine Biology info:eu-repo/semantics/article 1986 ftpubman 2023-08-02T00:05:12Z Natural phytoplankton from antarctic waters in the Drake Passage were used for competition experiments in semicontinuous cultures. The outcome of interspecific competition for silicate and nitrate was studied at a range of Si:N ratios (from 2.6:1 to 425:1) and at three different dilution rates. For five species Monod kinetics of silicate-and nitrate-limited growth has been established. Comparison between theoretical predictions derived from Monod kinetics and the outcome of competition experiments showed only minor deviations. Contrary to literature data, considerable depletion of nitrate was found in antarctic seawater. Both the concentrations of soluble silicate and of nitrate were too low to support maximum growth rates of some of the diatom species under investigation. Article in Journal/Newspaper Antarc* Antarctic Drake Passage Max Planck Society: MPG.PuRe Antarctic Drake Passage |
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Open Polar |
collection |
Max Planck Society: MPG.PuRe |
op_collection_id |
ftpubman |
language |
English |
description |
Natural phytoplankton from antarctic waters in the Drake Passage were used for competition experiments in semicontinuous cultures. The outcome of interspecific competition for silicate and nitrate was studied at a range of Si:N ratios (from 2.6:1 to 425:1) and at three different dilution rates. For five species Monod kinetics of silicate-and nitrate-limited growth has been established. Comparison between theoretical predictions derived from Monod kinetics and the outcome of competition experiments showed only minor deviations. Contrary to literature data, considerable depletion of nitrate was found in antarctic seawater. Both the concentrations of soluble silicate and of nitrate were too low to support maximum growth rates of some of the diatom species under investigation. |
format |
Article in Journal/Newspaper |
author |
Sommer, U. |
spellingShingle |
Sommer, U. Nitrate- and silicate-competition among antarctic phytoplankton |
author_facet |
Sommer, U. |
author_sort |
Sommer, U. |
title |
Nitrate- and silicate-competition among antarctic phytoplankton |
title_short |
Nitrate- and silicate-competition among antarctic phytoplankton |
title_full |
Nitrate- and silicate-competition among antarctic phytoplankton |
title_fullStr |
Nitrate- and silicate-competition among antarctic phytoplankton |
title_full_unstemmed |
Nitrate- and silicate-competition among antarctic phytoplankton |
title_sort |
nitrate- and silicate-competition among antarctic phytoplankton |
publishDate |
1986 |
url |
http://hdl.handle.net/21.11116/0000-0004-BABE-5 http://hdl.handle.net/21.11116/0000-0004-BAC0-1 |
geographic |
Antarctic Drake Passage |
geographic_facet |
Antarctic Drake Passage |
genre |
Antarc* Antarctic Drake Passage |
genre_facet |
Antarc* Antarctic Drake Passage |
op_source |
Marine Biology |
op_relation |
http://hdl.handle.net/21.11116/0000-0004-BABE-5 http://hdl.handle.net/21.11116/0000-0004-BAC0-1 |
_version_ |
1775357270654189568 |