Growth anomalies in Pecten maximus from coastal waters (Bay of Brest, France): relationship with diatom blooms

Abstract : The aim of this study was to characterize the daily shell growth of Pecten maximus from early 1998 to late spring 1999 in the Bay of Brest with a careful qualitative and quantitative description of the pelagic primary production. Our results, in accordance with previous studies, demonstrate that there are episodic declines in the growth rate. Concurrent events of low growth rate and large bottom-concentrations of algae following diatom blooms (Cerataulina pelagica or Rhizosolenia delicatula), suggests that this high concentration of phytoplankton on the bottom layer may affect food intake or respiratory activity of the scallops by gill clogging or oxygen depletion. In this study, silicic acid or phosphorus are inferred to be limiting factors responsible for the collapse of the spring bloom. Further, we suggest that, in an N-enriched ecosystem, Si or P-limitation and the changing sinking velocities of phytoplankton, could affect the biology of benthic suspension-feeders.
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Article dans une revue
Journal of the Marine Biological Association of the UK, Cambridge University Press (CUP), 2000, 80 (4), pp.667-673. 〈10.1017/S0025315400002496〉
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http://hal.univ-brest.fr/hal-00455482
Contributeur : Ivo Grigorov <>
Soumis le : mercredi 10 février 2010 - 15:03:58
Dernière modification le : jeudi 11 janvier 2018 - 06:22:24

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Anne Lorrain, Yves-Marie Paulet, Laurent Chauvaud, Nicolas Savoye, Elisabeth Nézan, et al.. Growth anomalies in Pecten maximus from coastal waters (Bay of Brest, France): relationship with diatom blooms. Journal of the Marine Biological Association of the UK, Cambridge University Press (CUP), 2000, 80 (4), pp.667-673. 〈10.1017/S0025315400002496〉. 〈hal-00455482〉

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