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Effects of management on aquatic tree-hole communities in temperate forests are mediated by detritus amount and water chemistry [Journal of Animal Ecology]

Keywords : aquatic larvae, biodiversity exploratories, community composition, dispersal, diversity, habitat filter, land-use intensity, metacommunity, phytotelmata, species sorting

par Frédéric Magné - publié le

1.Arthropod communities in water-filled tree holes may be sensitive to impacts of forest management, for example via changes in environmental conditions such as resource input.
2.We hypothesized that increasing forest management intensity (ForMI) negatively affects arthropod abundance and richness and shifts community composition and trophic structure of tree hole communities. We predicted that this shift is caused by reduced habitat and resource availability at the forest stand scale as well as reduced tree hole size, detritus amount and changed water chemistry at the tree holes scale.
3.We mapped 910 water-filled tree holes in two regions in Germany and studied 199 tree hole inhabiting arthropod communities.(...)

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