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| Titel |
The reliability of grazing rate estimates from dilution experiments: Have we over-estimated rates of organic carbon consumption by microzooplankton? |
| VerfasserIn |
J. R. Dolan, K. McKeon |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 1, no. 1 ; Nr. 1, no. 1 (2005-02-11), S.1-7 |
| Datensatznummer |
250000095
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| Publikation (Nr.) |
 copernicus.org/os-1-1-2005.pdf |
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| Zusammenfassung |
| According to a recent global analysis, microzooplankton grazing is
surprisingly invariant, ranging only between 59 and 74% of phytoplankton
primary production across systems differing in seasonality, trophic status,
latitude, or salinity. Thus an important biological process in the world
ocean, the daily consumption of recently fixed carbon, appears nearly
constant. We believe this conclusion is an artefact because dilution
experiments are 1) prone to providing over-estimates of grazing rates and 2)
unlikely to furnish evidence of low grazing rates. In our view the overall
average rate of microzooplankton grazing probably does not exceed 50% of
primary production and may be even lower in oligotrophic systems. |
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