Marine Biology

, Volume 160, Issue 4, pp 751–761 | Cite as

Feeding grounds for waders in the Bay of the Mont Saint-Michel (France): the Lanice conchilega reef serves as an oasis in the tidal flats

  • Bart De Smet
  • Laurent Godet
  • Jérôme Fournier
  • Nicolas Desroy
  • Mikaël Jaffré
  • Magda Vincx
  • Marijn Rabaut
Original Paper

Abstract

The tube-building polychaete Lanice conchilega can form dense populations, often called reefs, which promote benthic community change and constitute feeding grounds for secondary consumers. The aim of this study was to quantify the role of the L. conchilega reef of the Bay of the Mont Saint-Michel (BMSM) for feeding waders, by combining macrobenthos data, bird counts and bird diet information. Wader densities in the reef were on average 46.6 times higher than in non-reef areas. According to faecal analyses, waders in the reef mainly selected the accompanying fauna and especially crustaceans. The attractiveness of the reef to feeding birds may be largely explained by the high abundance, richness and biomass of macrobenthic species in the reef compared with the rest of the BMSM.

Keywords

Faecal Sample Bird Species Polychaete Tidal Flat Benthic Macrofauna 

Notes

Acknowledgments

We thank Matthieu Beaufils (Bretagne-Vivante/SEPNB, La société pour l’Etude et la Protection de la Nature en Bretagne, and GONm, Groupe Ornithologique Normand), Sébastien Provost (GONm) and Régis Morel (Bretagne-Vivante/SEPNB) for coordinating and providing the bird counts at the scale of the BMSM for 2009. Both Bretagne-Vivante/SEPNB and the GONm are acknowledged for funding the counts at the scale of the BMSM. Thanks to Thomas Brey for providing and helping with the empirical model to estimate benthic production and to Andrea Moore for help with the faecal analysis. We also thank the anonymous reviewers who improved earlier versions of the manuscript. The first author acknowledges a PhD scholarship provided by the Special Research Fund (BOF), Ghent University, Belgium. The second author acknowledges the ‘Centre National de la Recherche Scientifique’ for his Post Doc Grant.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Bart De Smet
    • 1
  • Laurent Godet
    • 2
  • Jérôme Fournier
    • 3
    • 4
  • Nicolas Desroy
    • 5
  • Mikaël Jaffré
    • 6
  • Magda Vincx
    • 1
  • Marijn Rabaut
    • 1
  1. 1.Department of Biology, Marine Biology SectionGhent UniversityGhentBelgium
  2. 2.CNRS, UMR 6554 LETG-Nantes GéolittomerUniversité de NantesNantes Cedex 3France
  3. 3.CNRS, UMR 7208 BOREAMuséum National d’Histoire NaturelleParis Cedex 05France
  4. 4.Station Marine de Dinard, USM 404 Muséum National d’Histoire NaturelleDinardFrance
  5. 5.IFREMER Laboratoire Environnement et Ressources FBNCRESCODinardFrance
  6. 6.Université de Lille 1, UMR 8187 LOG, Station Marine de WimereuxWimereuxFrance

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