Article (Scientific journals)
Atmospheric CO2 flux from mangrove surrounding waters
Borges, Alberto; Djenidi, Salim; Lacroix, Geneviève et al.
2003In Geophysical Research Letters, 30 (11), p. 1-5
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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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Abstract :
[en] The partial pressure of CO2 (pCO2) was measured at daily and weekly time scales in the waters surrounding mangrove forests in Papua New Guinea, the Bahamas and India. The pCO2 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 center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Borges, Alberto  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Djenidi, Salim ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie physique
Lacroix, Geneviève
Theate, Jean-Marie
Delille, Bruno  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Frankignoulle, Michel;  Université de Liège - ULiège > Département d'Astrophysique, géophysique et océanographie > Océanographie Chimique
Language :
English
Title :
Atmospheric CO2 flux from mangrove surrounding waters
Publication date :
05 June 2003
Journal title :
Geophysical Research Letters
ISSN :
0094-8276
eISSN :
1944-8007
Publisher :
Amer Geophysical Union, Washington, United States - Washington
Volume :
30
Issue :
11
Pages :
1-5
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 26 November 2008

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