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On the coupling of primary production and calcification at the continental margin Harlay, J.; Chou, L.; Roevros, N.; Wollast, R.; Delille, B.; Aerts, K.; Lapernat, P.-E. (2004). On the coupling of primary production and calcification at the continental margin, in: Mees, J. et al. VLIZ Young Scientists' Day, Brugge, Belgium 5 March 2004: book of abstracts. VLIZ Special Publication, 17: pp. 54 In: Mees, J.; Seys, J. (Ed.) (2004). VLIZ Young Scientists' Day, Brugge, Belgium 5 March 2004: book of abstracts. VLIZ Special Publication, 17. Vlaams Instituut voor de Zee (VLIZ): Oostende. X, 148 pp., meer In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 375223 [ download pdf ]
Documenttype: Samenvatting

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Trefwoorden

Biochemical phenomena > Calcification Biological production > Primary production Chemical compounds > Carbon compounds > Carbonates > Calcium compounds > Calcium carbonates Environmental conditions Inorganic matter > Carbon > Inorganic carbon Sediments ANE, Biscay Bay [Marine Regions] Marien/Kust

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Auteurs		Top
Harlay, J., meer Chou, L., meer Roevros, N., meer Wollast, R., meer	Delille, B., meer Aerts, K., meer Lapernat, P.-E.

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Abstract

Until now, little attention has been paid to the processes controlling the production, dissolution and fate of biogenic calcium carbonate in the oceans. It is however well known that net deposition rates of inorganic carbon to the sediments are comparable to those of organic matter. Still large uncertainties remain concerning the production and redissolution of biogenic carbonate in the marine system and thus about the role of the carbonate pump in response to anthropogenic CO2 perturbations. The understanding of these processes is also a prerequisite to predict the response of marine organisms to global environmental changes. In the framework of the Belgian global change programme, we have developed a project devoted to the study of the inorganic carbon cycle in the Bay of Biscay where coccolithophorid blooms occur frequently. The study focuses on processes associated with the oceanic production and dissolution of calcium carbonate, by combining field investigations, laboratory experiments and modelling efforts. Remote sensing demonstrates a close relationship between vertical mixing along the continental margin and the development of the phytoplankton bloom. We will present here, results of 14C incorporation experiments used to evaluate the rate of production of organic and inorganic particulate carbon, obtained during a coccolithophorid spring bloom in the investigated area. A tentative mass balance of the carbon fluxes for this area will be presented, confirming the importance that the calcium carbonate pump may play in the oceanic system.

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