(Article of periodic en Anglais - 2014)

Document title

Detection of active oxalate–carbonate pathway ecosystems in the Amazon Basin : Global implications of a natural potential C sink

Authors(s) and Affiliation(s)

CAILLEAU G. (1 2) ; MOTA M. (3) ; BINDSCHEDLER S. (2 4) ; JUNIER P. (2) ; VERRECCHIA E.P. (1) ;
(1) Biogeosciences Lab., Inst. of Earth Surface Dynamics, Univ., Lausanne, SUISSE
(2) Lab. of Microbiology, Inst. of Biology, Univ., Neuchâtel, SUISSE
(3) Univ. for Viticulture and Oenology, Nyon, SUISSE
(4) Dept. of Environmental Microbiology, Helmholtz Centre for Environmental Research GmbH, Leipzig, ALLEMAGNE


The oxalate–carbonate pathway (OCP) is a biogeochemical process, which has been described in Milicia excelsa tree ecosystems of Africa. The aim of this study is twofold : 1) to make an inventory of trees in the Amazon Basin presenting some of the characteristics associated to an active OCP; and 2) to validate a field methodology for the screening and characterization of OCP systems that can be applied worldwide. This study highlights the implication of OCP ecosystems on carbon and calcium biogeochemical coupled cycles. As previously mentioned for M. excelsa tree ecosystems in Africa, carbonate accumulations observed in the Bolivian tropical forest could be extrapolated to part or the whole Amazon Basin and might constitute an important reservoir that must be taken into account in the global carbon balance of the Tropics


Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2014, vol. 116 [pp. 132-141]

Bibliographic references : 37 ref.

Collation : 6 fig., 3 tabl.



INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.12.017

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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