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Fig. 4 | BMC Ecology

Fig. 4

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

Fig. 4

Proportion of active dens in relationship to small rodent abundance and availability of reindeer carcasses. Observed proportion of active Arctic fox dens (breeding) in relation to the small rodent trapping index in June for years with and without high availability of reindeer carcasses for the years 2007 to 2016. Open symbols refer to 2007 and 2014, the years with high availability of reindeer carcasses, whereas filled symbols refer to the other years. Lines show the predicted probability for a den to be active as estimated from a generalized linear mixed model (additive effect of small rodents and reindeer on the logit scale), and polygons show 95% confidence intervals. The thin line and doted polygon refer to years with high availability of reindeer carcasses whereas the thick line and grey polygon refer to the other years

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