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Site- and species-specific distribution patterns of molluscs at five intertidal soft-sediment areas in northwest Europe during a single winter
Bocher, P.; Piersma, T.; Dekinga, A.; Kraan, C.; Yates, M.G.; Guyot, T.; Folmer, E.O.; Radenac, G. (2007). Site- and species-specific distribution patterns of molluscs at five intertidal soft-sediment areas in northwest Europe during a single winter. Mar. Biol. (Berl.) 151(2): 577-594. http://dx.doi.org/10.1007/s00227-006-0500-4
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
Peer reviewed article  

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Trefwoord
    Marien/Kust

Auteurs  Top | Dataset 
  • Bocher, P.
  • Piersma, T.
  • Dekinga, A.
  • Kraan, C.
  • Yates, M.G.
  • Guyot, T.
  • Folmer, E.O.
  • Radenac, G.

Abstract
    In this study we aim to provide a basic description and comparison of the spatial distribution and population structure of the common intertidal mollusc species, sampled within a single winter along a latitudinal gradient of different soft-sediment areas spanning 8° of latitude (46°–54°N) and 900 km of distance in northwest Europe. Sediment samples were collected from December 2003 to early March 2004 in the Wadden Sea (The Netherlands), the Wash (United Kingdom), Mont Saint–Michel Bay (France) and two bays on the central French Atlantic coast in south of Brittany. Core-sampling over 250 m grids allowed us to cover 3–30 km² at nine separate intertidal subsites, with a grand total of 2,103 points visited. Among the 15 bivalve and 8 gastropod species collected, we focused on the four most common and abundant bivalve species (Cerastoderma edule, Macoma balthica, Scrobicularia plana and Abra tenuis) that together represented 96% of all collected bivalves, and on the mudsnail Hydrobia ulvae that comprised 99% of all collected gastropods. C. edule and M. balthica were the most widespread bivalves, with higher densities occurring at higher latitudes. S. plana and A. tenuis were more abundant at southern sites, both with a clear preference for muddy sediments. The mudsnail H. ulvae occurred commonly and in comparable densities at all study sites, except in Mont Saint–Michel Bay where it was very rare. Mean sizes of the common molluscs were highly variable between sites, without clear north–south gradients. The mollusc distribution patterns at the five intertidal areas and nine subsites were predominantly site-specific. Mollusc community composition showed greater similarity within than between the regions north and south of the Brittany peninsula.

Dataset
  • Philippe A., Plumejeaud-Perreau C., Jourde J., Pineau P., Lachaussée N., Joyeux E., Corre F., Delaporte P. Bocher P. (2016): Benthos monitoring in the intertidal mudflats of Pertuis-Charentais (Bay of Biscay) from 2004 on., meer

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