[en] Air-water CO2 fluxes were up-scaled to take into account the latitudinal and ecosystem diversity of the coastal ocean, based on an exhaustive literature survey. Marginal seas at high and temperate latitudes act as sinks of CO2 from the atmosphere, in contrast to subtropical and tropical marginal seas that act as sources of CO2 to the atmosphere. Overall, marginal seas act as a strong sink of CO2 of about -0.45 Pg C yr(-1). This sink could be almost fully compensated by the emission of CO2 from the ensemble of near-shore coastal ecosystems of about 0.40 Pg C yr(-1). Although this value is subject to large uncertainty, it stresses the importance of the diversity of ecosystems, in particular near-shore systems, when integrating CO2 fluxes at global scale in the coastal ocean.
Research center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - 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
Delille, Bruno ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Frankignoulle, Michel
Language :
English
Title :
Budgeting sinks and sources of CO2 in the coastal ocean: Diversity of ecosystems counts
Publication date :
16 July 2005
Journal title :
Geophysical Research Letters
ISSN :
0094-8276
eISSN :
1944-8007
Publisher :
Amer Geophysical Union, Washington, United States - Washington
DG RDT - Commission Européenne. Direction Générale de la Recherche et de l'Innovation [BE] BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Commentary :
An edited version of this paper was published by AGU. Copyright 2005 American Geophysical Union.”
Abril, G., E. Nogueira, H. Hetcheber, G. Cabeçadas, E. Lemaire, and M. J. Brogueira (2002), Behaviour of organic carbon in nine contrasting European estuaries, Estuarine Coastal Shelf Sci., 54, 241-262.
Borges, A. V. (2005), Do we have enough pieces of the jigsaw to integrate CO2 fluxes in the coastal ocean?, Estuaries, 28, 3 27.
Borges, A. V., and M. Frankignoulle (2002), Distribution and air-water exchange of carbon dioxide in the Scheldt plume off the Belgian coast, Biogeochemistry, 59, 41-67.
Borges, A. V., S. Djenidi, G. Lacroix, J. Théate, B. Delille, and M. Frankignoulle (2003), Atmospheric CO2 flux from mangrove surrounding waters, Geophys. Res. Lett., 30(11), 1558, doi:10.1029/2003GL017143.
Cai, W. J., and M. Dai (2004), Comment on "Enhanced open ocean storage of CO2 from shelf sea pumping," Science, 306, 1477.
Cai, W., Z. A. Wang, and Y. Wang (2003), The role of marsh-dominated heterotropic continental margins in transport of CO2 between the atmosphere, the land-sea interface and the ocean, Geophys. Res. Lett.,30(16), 1849, doi:10.1029/2003GL017633.
Delille, B., et al. (2004), Carbon dioxide dynamics in Antarctic pack ice and transfer at the ice-sea and air-ice interface, paper presented at SOLAS Open Science Conference, Surface Ocean Lower Atmos.Study, Halifax, Nova Scotia, Canada, 13-16 Oct.
Food and Agriculture Organization of the United Nations (2003), State of the World's Forests (SOFO), report, 100 pp., Rome.
Frankignoulle, M., and A. V. Borges (2001), European continental shelf as a significant sink for atmospheric carbon dioxide, Global Biogeochem. Cycles, 15, 569-576.
Frankignoulle, M., G. Abril, A. Borges, I. Bourge, C. Canon, B. Delille, E. Libert, and J.-M. Théate (1998), Carbon dioxide emission from European estuaries, Science, 282, 434-436.
Gattuso, J.-P., M. Frankignoulle, and R. Wollast (1998), Carbon and carbonate metabolism in coastal aquatic ecosystems, Annu. Rev. Ecol. Syst, 29, 405-433.
Gibson, J. A. E., and T. W. Trull (1999), Annual cycle fCO2 under seaice and in open water in Prydz Bay, East Antarctica, Mar. Chem., 66, 187-200.
Hedges, J. I., R. G. Keil, and R. Benner (1997), What happens to terrestrial organic matter in the ocean?, Org. Geochem., 27, 195-212.
Hopkinson, C. S. J., and E. M. Smith (2005), Estuarine respiration: An overview of benthic, pelagic and whole system respiration,in Respiration in Aquatic Ecosystems, edited by P. A. del Giorgio, and P. J. L. Williams, pp. 123-147, Oxford Univ. Press, New York.
Keil, R. G., L. M. Mayer, P. D. Quay, J. E. Richey, and J. L. Hedges (1997), Loss of organic matter from riverine particles in deltas, Geochim. Cosmochim. Acta, 61, 1507-1511.
Körtzinger, A. (2003), A significant CO2 sink in the tropical Atlantic Ocean associated with the Amazon River plume, Geophys. Res. Lett., 30(24), 2287, doi:10.1029/2003GL018841.
Peterson, B., B. Fry, M. Hullar, S. Saupe, and R. Wright (1994), The distribution and stable carbon isotopic composition of dissolved organic carbon in estuaries, Estuaries, 17, 111-121.
Richey, J. E. (2004), Pathways of atmospheric CO2 through fluvial systems, in The Global Carbon Cycle: Integrating Humans, Climate, and the Natural World, SCOPE Rep., vol. 62, edited by C. B. Field and M. R. Raupach, pp. 329-340, Island Press, Washington, D. C.
Semiletov, I., A. Makshtas, S. I. Akasofu, and E. L. Andreas (2004), Atmospheric CO2 balance: The role of Arctic sea ice, Geophys. Res. Lett., 31, L05121, doi:10.1029/2003GL017996.
Spalding, M. D., C. Ravilious, and E. P. Green (2001), World Atlas of Coral Reefs, 404 pp., Univ. of Calif. Press, Berkeley.
Takahashi, T., et al. (2002), Global sea-air CO2 flux based on climatological surface ocean ρCO2, and seasonal biological and temperature effects, Deep Sea Res., Part II, 49, 1601-1622.
Thomas, H., Y Bozec, K. Elkalay, and H. J. W. De Baar (2004a), Enhanced open ocean storage Of CO2 from shelf sea pumping, Science, 304, 1005-1008.
Thomas, H., Y. Bozec, K. Elkalay, and H. J. W. De Baar (2004b), Response to comment on "Enhanced open ocean storage of CO2 from shelf sea pumping," Science, 306, 1477.
Thomas, H., Y. Bozec, H. J. W. De Baar, K. Elkalay, M. Frankignoulle, L.-S. Schiettecatte, and A. V Borges (2005), The carbon budget of the North Sea, Biogeosciences, 2, 87-96.
Tsunogai, S., S. Watanabe, and T. Sato (1999), Is there a "continental shelf pump" for the absorption of atmospheric CO2?, Tellus, Ser. B, 5,701-712.
Walsh, J. J. (1988), On the Nature of Continental Shelves, 520 pp., Elsevier, New York.
Wang, Z. A., and W.-J. Cai (2004), Carbon dioxide degassing and inorganic carbon export from a marsh-dominated estuary (the Duplin River): A marsh CO2 pump, Limnol. Oceanogr., 49, 341-354.
Wollast, R. (1998), Evaluation and comparison of the global carbon cycle in the coastal zone and in the open ocean, in The Global Coastal Ocean, edited by K. H. Brink and A. R. Robinson, pp. 213-252, John Wiley, Hoboken, N. J.
Woodwell, G. M., P. H. Rich, and C. A. S. Hall (1973), Carbon in estuaries, in Carbon and the Biosphere, edited by G. M. Woodwell and E. V Pecan, pp. 221-240, Natl. Tech. Inf. Serv., Springfield, Va.