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| Titel |
Poor correlation between phytoplankton community growth rates and nutrient concentration in the sea |
| VerfasserIn |
A. Regaudie-de-Gioux, S. Sal, Á. Lopez-Urrutia |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 12, no. 6 ; Nr. 12, no. 6 (2015-03-24), S.1915-1923 |
| Datensatznummer |
250117877
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| Publikation (Nr.) |
 copernicus.org/bg-12-1915-2015.pdf |
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| Zusammenfassung |
| Nutrient availability is one of the major factors regulating marine
productivity and phytoplankton community structure. While the response of
phytoplankton species to nutrient variation is relatively well known, that
of phytoplankton community remains unclear. We question whether
phytoplankton community growth rates respond to nutrient concentration in a
similar manner to phytoplankton species composing the community, that is,
following Monod's model. Data on in situ marine community growth rates in
relation to nutrient concentration and the behaviour of a simple
multi-species community model suggest that community growth rate does not
respond to nutrient concentration according to the Monod equation. Through a
simulation study we show this can be explained as a consequence of changes
in size structure. Marine biogeochemical models must not parameterize
phytoplankton community growth rate response to nutrient concentration using
a single Monod equation but rather involve different phytoplankton
functional groups each with different equation parameters. |
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