Fig. S1. The Bioclimatic Envelope of the Wolverine (Gulo gulo) – North America. The wolverine’s hypothesized bioclimatic envelope as defined by the distribution of persistent spring snow cover (blue gradient). The gradient depicts the number of years out of 7 (2000-2006) in which snow cover was present throughout the period from April 24 to May 15.

Eurasia

Fig. S2. The Bioclimatic Envelope of the Wolverine (Gulo gulo) – Eurasia.
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