In south France: A successfull bat sampling in the National Park of Cevennes by Dynafor and first steps in landscape connectivity modelling for bats
Bats have been acoustically sampled during the summer 2019 in 42 sites, selected to cover a range of deciduous-coniferous degree of mixture and a range of the proportion of set-aside forests in the landscape. At each site, we used two passive acoustic sampling devices (Batlogger and Audiomoth) to simultaneously sample the understory and the canopy levels. Overall, we recorded 17 species with 32.677 bat passes. The local species richness ranged from 0 to 10 (mean=6). We also collected 126,329 bush cricket passes belonging to 10 species.
Different connectivity scenarios have been computed both for Cevennes National park and for the Gasconny area, including Euclidian distances and least cost pathways. Preliminary analyses for bats in the Cevennes National park suggest that the dPC connectivity fractions contribute to explain the focal species presence. The same analyses remain to be done in the Gasconny sites for other taxa that will be sampled in 2020.