MOESM1 of Vole abundance and reindeer carcasses determine breeding activity of Arctic foxes in low Arctic Yamal, Russia

Additional file 1: Table S1. Candidate models evaluated for arctic fox den occupancy. Table S2. Candidate models evaluated for for the number of arctic fox pups per litter. Table S3. Estimated coefficients of two generalized linear mixed effects models for the minimum number of pups per den. Table S4. Estimated coefficients of a linear mixed effects model for the yearly variation in a) δ13C and b) δ15C values of winter fur of arctic foxes. Figure S1. Proportion of den visits each year during which remains of different categories of birds were recorded among prey remains. Figure S2. Proportion of den visits each year during which remains of different categories of mammalian prey remains were recorded. Figure S3. Results of a correspondence analysis of prey remains recorded at each visit on active dens or dens with clear signs of recent presence of foxes.