Old-growth forests: An ecosystem approach
Saproxylic beetle biodiversity in old-growth forests of the south-east of France
This study compared the richness of saproxylic beetle species and the composition of species assemblages between the major forests types of the south-east of France. The forests differed by their geographical position and their composition in tree species. The results confirmed the existence of a clear local identity of the saproxylic beetles communities. This identity combined three geographical and ecological factors: the geographical position, the altitude and the dominant species of trees. Surprisingly, the period length since the last important perturbation of the stand was not a determinant factor to explain the composition of the saproxylic communities. Selective logging and deadwood retention favoured the increase of the diversity of saproxylic species. This diversity reached a maximum during the first 10 years following the perturbation, was the lowest 30 years after the stand perturbation, but increased again after 50 years with a different species composition.
Biogeography, host tree, old-growth forest, perturbation, saproxylic beetles, selective logging
Címszavazva - GE