Affiliation: | 1. Norwegian Polar Institute, Fram Centre, 9296, Troms?, Norway 2. University of Troms?, Breivika, 9037, Troms?, Norway 3. Holte, 4760, Birkeland, Norway 4. Department of Forestry and Wildlife Management, Hedmark University College, Campus Evenstad, 2418, Elverum, Norway
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