Floristic and ecological diversity of Ranunculus aquatic habitats in the sub-atlantic range: Implications for conservation. - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Biodiversity and Conservation Année : 2006

Floristic and ecological diversity of Ranunculus aquatic habitats in the sub-atlantic range: Implications for conservation.

Résumé

Ranunculus communities have been identified by the European Community Directive on Conservation of Natural and Semi-Natural Habitats as a key habitat in need of protection. The ecological requirements and floristic composition of three Ranunculus communities were investigated in North-Eastern France. We also aimed to determine the relationships between environmental parameters, Ranunculus abundance and species richness. R. fluitans communities clearly differed from the other communities by a higher evenness and species richness and by the occurrence of specific species. In contrast, R. penicillatus and R. peltatus communities displayed similar floristic content. Three different sub-associations were however identified within these communities. If alkalinity was determinant in isolating R. fluitans communities from the other stretches, the ecological ranges of the three communities strongly overlapped while considering parameters linked with other resources or with physical constraints. Further, no significant correlations were highlighted between environmental parameters, Ranunculus abundance and species richness. With respect to conservation, these observations may indicate the particular difficulty in defining each Ranunculus habitat on a European scale, and identify several key points which need to be taken into account when evaluating their status.

Dates et versions

hal-00132884 , version 1 (22-02-2007)

Identifiants

Citer

Cendrine Mony, Jean-François Mony, Gabrielle Thiebaut, Serge Muller. Floristic and ecological diversity of Ranunculus aquatic habitats in the sub-atlantic range: Implications for conservation.. Biodiversity and Conservation, 2006, 15(11), pp.3383-3400. ⟨10.1007/s10531-005-2431-7⟩. ⟨hal-00132884⟩
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