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| Titel |
Effect of ocean acidification on the benthic foraminifera Ammonia sp. is caused by a decrease in carbonate ion concentration |
| VerfasserIn |
N. Keul, G. Langer, L. J. Nooijer, J. Bijma |
| 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 ; 10, no. 10 ; Nr. 10, no. 10 (2013-10-01), S.6185-6198 |
| Datensatznummer |
250085344
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| Publikation (Nr.) |
 copernicus.org/bg-10-6185-2013.pdf |
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| Zusammenfassung |
| About 30% of the anthropogenically released CO2 is taken up by the
oceans; such uptake causes surface ocean pH to decrease and is commonly
referred to as ocean acidification (OA). Foraminifera are one of the most
abundant groups of marine calcifiers, estimated to precipitate ca. 50 % of
biogenic calcium carbonate in the open oceans. We have compiled the state of
the art literature on OA effects on foraminifera, because the majority of OA
research on this group was published within the last three years. Disparate
responses of this important group of marine calcifiers to OA were reported,
highlighting the importance of a process-based understanding of OA effects on
foraminifera. We cultured the benthic foraminifer Ammonia sp. under
a range of carbonate chemistry manipulation treatments to identify the
parameter of the carbonate system causing the observed effects. This
parameter identification is the first step towards a process-based
understanding. We argue that [CO32−] is the parameter affecting
foraminiferal size-normalized weights (SNWs) and growth rates. Based on the
presented data, we can confirm the strong potential of Ammonia sp.
foraminiferal SNW as a [CO32−] proxy. |
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