The biodiversity of dictyostelids in mountain forests: a case study in the French Alps
Résumé
Forest management can seriously modify the biodiversity of forest dwelling species, but the consequences are poorly known for certain taxa, particularly soil fauna, for which few studies have been published. We compared the biodiversity of dictyostelids cellular slime moulds in a managed and an unmanaged forest in the French Alps and analysed the influence of environmental factors on species richness and abundance of dictyostelids. To our knowledge, this study is the first one undertaken in the European Alps. We must better understand the influence of various environmental factors on the biodiversity of these organisms if we want to accurately define their functional role in the soil. In our study, dictyostelids showed lower levels of diversity compared to previously published results. The mean species richness of dictyostelids was marginally higher in unmanaged than in managed forests and biodiversity indices were significantly correlated with elevation and pH. This suggests that environmental factors have a predominant effect on the biodiversity of dictyostelids and that the effect of forest management is secondary.
Mots clés
FORET DE MONTAGNE
BIODIVERSITE
RICHESSE SPECIFIQUE
ABONDANCE D'ESPECE
MICROFAUNE
GESTION FORESTIERE
EXPLOITATION FORESTIERE
FORET VIERGE
FACTEUR DE L'ENVIRONNEMENT
SOL DE FORET
SOL DE MONTAGNE
PH
FAGUS SYLVATICA
ABIES ALBA
PICEA ABIES
CHAMPIGNON
ALPES FRANCAISES
DICTYOSTELIDS
FOREST MANAGEMENT
MIXED BEECH-FIR-SPRUCE STANDS
ELEVATION
Origine : Fichiers produits par l'(les) auteur(s)
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