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Long-term spatio-temporal changes of the muddy fine sand benthic community of the Bay of Seine (eastern English Channel)
Bacouillard, L.; Baux, N.; Dauvin, J.-C.; Desroy, N.; Geiger, K.J.; Gentil, F.; Thiebaut, E. (2020). Long-term spatio-temporal changes of the muddy fine sand benthic community of the Bay of Seine (eastern English Channel). Mar. Environ. Res. 161: 105062. https://dx.doi.org/10.1016/j.marenvres.2020.105062
In: Marine Environmental Research. Applied Science Publishers: Barking. ISSN 0141-1136; e-ISSN 1879-0291
Peer reviewed article  
Available in  Authors 
Keyword
    Marine/Coastal
Author keywords
    Benthic ecology; Coastal zone; Temporal variability; Species composition Macrofauna; a-diversity; ß-diversity; ?-diversity
Authors  Top 
  • Bacouillard, L.
  • Baux, N.
  • Dauvin, J.-C., more
  • Desroy, N.
  • Geiger, K.J.
  • Gentil, F.
  • Thiebaut, E.
Abstract
    In the English Channel, the eastern Bay of Seine is exposed to numerous anthropogenic disturbances, in particular major changes in sediment dynamics, which are expected to greatly impact benthic communities. To assess the long-term effects of these stressors on the muddy fine sand benthic community, an original long-term monitoring program has been implemented since 1988. It is based on the sampling of a network of 60 stations during seven surveys over 28 years from 1988 to 2016. We investigate changes of species density, species composition and species diversity at different scales (α-diversity, β-diversity and γ-diversity). Contrary to results obtained in many coastal areas, our results showed a long-term persistence of the community in terms of species composition and structure although a general shift towards muddy sediment has resulted in increased colonisation by species associated with muddy habitats and a decrease in spatial beta diversity.
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