<b>Data from: </b><b>Expansion limits of the Yellow-legged hornet-mediated beekeeping risk in Western Europe</b>

This dataset result from the large-scale citizen science program aiming at accurately mapping the distribution of V. velutina in apiaries across France and Germany. Overall, a total of 1697 responses from beekeepers on the presence or absence of V. velutina predating in the apiaries across France (n=1368 responses) and Germany (n=329 responses). The responses were widely distributed throughout France and Germany. The hornet was established throughout the French territory as expected, and mostly detected near the French border in Germany. We found that HBR was substantially lower in Germany than in France. Temperature had a positive effect on both the hornet presence and HBR whereas the distance to the introduction point had a negative effect, both in France and Germany. These results suggest that the expansion of V. velutina in Western Europe could be reduced on the eastern front due to continental climate. The spatial variability in HBR suggests that the impact of V. velutina on beekeeping is not homogenous throughout the invasion range, in particular in Germany. Considering HBR spatial variability could help formulating regionally adapted management plans to limit V. velutina impacts on biodiversity, human health and economic sectors. The data are related to the scientific paper "Requier, F., et al. (under review) Expansion limits of the Yellow-legged hornet-mediated beekeeping risk in Western Europe. NeoBiota ».Data are available as a csv file titled "Requier et al._data Yellow-legged hornet in France and Germany.csv". To keep the data anonymous, we removes the Latitude and Longitude informations. # METADATA#'data.frame':1697 obs. of 8 variables:# ID : Factor variable ; a unique identity for the reponse to the survey# Year : Factor variable ; two factors are available, representing the year when the response was collected, with "2018" for the first year of the survey and "2019" for the second year of the survey # Country : Factor variable ; two factors are available (France and Germany), representing the country name were the response was collected# Presence : Numeric variable; the absence (0) or the presence (1) of V. velutina at the observation point# Number : Numeric variable; the maximum number of hornet individuals observed at the same time predating in front of a beehive# Distance : Numeric variable; the distance (in km) to the introduction site as an euclidean distance in kilometers considering the location of accidental introduction in 2004 in the south-western France in the Lot et Garonne department # Temperature : Numeric variable; the annual ambient mean temperature (in °C) at the observation point# Urban_habitat : Numeric variable; the proportion of urbanized areas around the observation point in an area of 10 km2 around the GPS coordinates </p