Effect of ocean acidification on the benthic foraminifera Ammonia sp. is caused by a decrease in carbonate ion concentration
Keul, N. (Alfred-Wegener-Institut für Polar- und Meeresforschung)
Langer, Gerald (University of Cambridge. Department of Earth Sciences)
De Nooijer, Lennart J. (Royal Netherlands Institute for Sea Research. Department of Marine Geology)
Bijma, Jelle (Alfred-Wegener-Institut für Polar- und Meeresforschung)

Data:	2013
Descripció:	14 pàg.
Resum:	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 foraminiferAmmoniasp. 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 ofAmmoniasp. foraminiferal SNW as a [CO32-] proxy.
Ajuts:	European Commission 211384 European Commission 265103 European Commission 267931
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	SDG 14 - Life Below Water
Publicat a:	Biogeosciences, Vol. 10, issue 10 (October 2013) , p. 6185-6198, ISSN 1726-4189

DOI: 10.5194/bg-10-6185-2013

14 p, 832.4 KB

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