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Aim
The Arctic is the coldest inhabited region on Earth, and it supports few terrestrial species. The tropical‐climate origin of many angiosperm clades, along with strong phylogenetic niche conservatism, likely constrained colonization of cold environments for many plants. However, invasion of the Arctic by many lineages might also have opened up a new adaptive landscape that facilitated subsequent...
Aim
The tropical niche conservatism (TNC) hypothesis predicts that species in colder or drier climates should on average be more closely related to each other (more phylogenetically clustered) than those in warmer or wetter climates, but a global test of this prediction for local forest communities is lacking. In this study, we test this prediction by analysing a comprehensive dataset of forest communities...
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