Historical biogeography of tree species in the pacific northwest: a niche modeling approach

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Genetic diversity and geographic patterns of genetic variation in tree species today are to a large extent the result of their recent evolutionary history. Above all, recurring ice ages and warm-periods have had profound effects on the geographical distributions and patterns of genetic diversity in tree species in Canada. Knowledge of these dynamic histories and the resulting patterns of genetic variation helps us to manage genetic resources of tree species in tree improvement programs and to conserve genetic diversity and evolutionary potential in natural tree populations. Further, understanding how species have responded to climate change in the past through migration, adaptation, range expansion, and/or extirpation of populations will help us to predict their vulnerability to anthropogenic climate change in the future.