ORBi: Borges Alberto - Atmospheric CO2 flux from mangrove surrounding waters

Reference : Atmospheric CO2 flux from mangrove surrounding waters


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
	To cite this reference:	http://hdl.handle.net/2268/1311

Title :	Atmospheric CO2 flux from mangrove surrounding waters
Language :	English
Author, co-author :	Borges, Alberto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique >]
	Djenidi, Salim [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie physique >]
	Lacroix, Geneviève [> > > >]
	Theate, Jean-Marie [> > > >]
	Delille, Bruno [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique > > >]
	Frankignoulle, Michel [Université de Liège - ULg > Département d'Astrophysique, géophysique et océanographie > Océanographie Chimique > >]
Publication date :	5-Jun-2003
Journal title :	Geophysical Research Letters
Publisher :	Amer Geophysical Union
Volume :	30
Issue/season :	11
Audience :	International
ISSN :	0094-8276
City :	Washington
Abstract :	[en] [1] The partial pressure of CO2 (pCO(2)) was measured at daily and weekly time scales in the waters surrounding mangrove forests in Papua New Guinea, the Bahamas and India. The pCO(2) values range from 380 to 4800 muatm. These data, together with previously published data, suggest that overall oversaturation of CO2 with respect to atmospheric equilibrium in surface waters is a general feature of mangrove forests, though the entire ecosystems (sediment, water and vegetation) are probably sinks for atmospheric CO2. The computed CO2 fluxes converge to about +50 mmolC m(-2) day(-1). If this conservative value is extrapolated for worldwide mangrove ecosystems, the global emission of CO2 to the atmosphere is about 50 10(6) tC year(-1). Based on this tentative estimate, mangrove waters appear to be regionally a significant source of CO2 to the atmosphere and should be more thoroughly investigated, especially at seasonal time scale.
Research units :	Unité d'Océanographie Chimique ; Centre Interfacultaire de Recherches en Océanologie - MARE
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/1311
DOI :	10.1029/2003GL017143
Mentions required by the publisher for OA :	The authors would like to thank Nagada Diving Centre (Papua New Guinea), Caribbean Marine Research Centre (Bahamas) and Andhra University (India) for the welcome received at each site, and, numerous colleagues for help in sampling and the elaboration of the manuscript. Comments from two anonymous reviewers improved the manuscript. This work was funded by the F.N.R.S. (contracts numbers 2.4521.96, 2.4594.01, 2.4596.01, 2.4545.02), with which AVB and MF are, respectively, a postdoctoral researcher and a research associate.

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