Fig. 3

Result of the overall ENFA carried out to determine the relationship between environmental variables and the distribution of edible dormice in the study area (years 2006–2014). The eigenvalue diagram of the analysis in the upper right corner shows the contribution of each specialization axis to the overall specialization, were each barplot represents one specialization axis (Spe 1–6; only). The biplot for the analysis is formed by the marginality (x-Axis; Mar) and the first of these specialization axes (y-Axis, Spe1), which explains most of the variance. The light grey area represents the minimum convex polygon enclosing all the projections of the available habitat, whereas the dark grey area corresponds to the habitat used by the animals. The white dot represents the centroid of the used habitat, while the origin of the plot is the centroid of the available sites. The environmental variables are projected via the arrows. The longer an arrow, the more important it is for the explanation of the marginality axis. The arrows that have the biggest angle from the marginality axis have the highest specialization, signs are arbitrary in this case. Environmental variable abbreviations: alt = Altitude; age = Forest age; fag = Fagus sylvatica density; conifers = Conifer density; slope = Slope; can = Canopy closure; girth = Girth of the nest-box tree. For further explanations of the variables see Table 1