Utilisation des peuplements de la macrofaune benthique pour déceler les signes de perturbation du milieu : exemple du golfe du Morbihan (Bretagne, France)

2024/12/30 by AFLI, Ahmed
#ANE #Brittany #Eutrophication #France #Man-induced effects #Marine #Marine pollution #Pollution indicators #Pollution monitoring #Zoobenthos

paper · doi:10.71754/instm.bulletin.v26.887

Abstract

The coastal area are more and more affected by the increasing anthropic activities and nutriment inputs, coming from the catchment area. Macrofauna populations show different reactions in front of such conditions, and therefore constitute an effective tool to detect the first signs of eutrophication and perturbation of the area The model of « écologie groups and biotic indices » was used It shows that the whole eastern part of the Morbihan gulf is impacted by the perturbation, and its benthic macrofauna assemblages are perturbed as shown by the increasing dominance of, firstly, tolerent species and. secondly, opportunistic species. This indicates strong unballance of the macrofauna assemblages.

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