Reference : Particle export during a bloom of Emiliania huxleyi in the North-West European continent...
Scientific journals : Article
Life sciences : Environmental sciences & ecology
Life sciences : Aquatic sciences & oceanology
http://hdl.handle.net/2268/80860
Particle export during a bloom of Emiliania huxleyi in the North-West European continental margin
English
Schmidt, S. [> >]
Harlay, Jérôme mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique >]
Borges, Alberto mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique >]
Groom, S. [Remote Sensing Group, Plymouth Marine Laboratory, Plymouth PL1 3DH, United Kingdom > > > >]
Delille, Bruno mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique >]
Roevros, N. [Laboratoire d’Océanographie Chimique et Géochimie des Eaux, Faculté des Sciences, Université Libre de Bruxelles, B-1050 Brussels, Belgium > > > >]
Christodoulou, S. [Remote Sensing Group, Plymouth Marine Laboratory, Plymouth PL1 3DH, United Kingdom > > > >]
Chou, L. [Laboratoire d’Océanographie Chimique et Géochimie des Eaux, Faculté des Sciences, Université Libre de Bruxelles, B-1050 Brussels, Belgium > > > >]
2013
Journal of Marine Systems
Elsevier Science
109-110
s182-s190
Yes (verified by ORBi)
International
0924-7963
Amsterdam
The Netherlands
[en] Coccolithophores, the dominant pelagic calcifiers in the oceans, play a key role in the marine carbon cycle through calcification, primary production and carbon export, the main rivers of the biological CO2 pump. In May 2002 a cruise was conducted on the outer shelf of the North West European continental margin, from the north Bay of Biscay to the Celtic Sea (47.0°-50.5°N, 5.0°-11.0°W), an area where massive blooms of Emiliania huxleyi are observed annually. Biogeochemical variables including primary production, calcification, partial pressure of CO2 (pCO2), chlorophyll-a (Chl-a), particle load, particulate organic and inorganic carbon (POC, PIC) and 234Th, were measured in surface waters to assess particle dynamic and carbon export in relation to the development of a coccolithophore bloom. We observed a marked northward decrease in Chl-a concentration and calcification rates: the bloom exhibited lower values and may less well developed in the Goban Spur area. The export fluxes of POC and PIC from the top 80 m, determined using the ratios of POC and PIC to 234Th of particles, ranged from 81 to 323 mgC m-2 d-1 and from 30 to 84 mgC m-2 d-1, respectively. The highest fluxes were observed in waters presenting a well-developed coccolithophore bloom, as shown by high reflectance of surface waters. This experiment confirms that the occurrence of coccolithophores promotes efficient export of organic and inorganic carbon on the North-West European margin.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/80860
10.1016/j.jmarsys.2011.12.005

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