Modeling Avifaunal Responses Executive Summary

Climate models project the rapid warming of boreal and arctic regions of NorthAmerica. This has led to predictions that boreal forest vegetation and fauna will track these changes andshift northward into the arctic over the next century. We used a comprehensive dataset of avian pointcountsurveys from across boreal Canada and Alaska, combined with the best-available interpolatedclimate data, to develop bioclimatic niche models of current avian distribution and density for 102 nativespecies of forest songbirds. We then used a downscaling of projected climates in future periods (2011–2040, 2041–2070, 2071–2100) to assess the potential for these species to shift their ranges and increasetheir abundance across North...

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