Digest: Gene flow timing uncovers a cloud forest downslope shift in warmer times.

Are the distributions of mountain species shifting up or downslope under climate change? Contrary to the long-held view of global warming forcing an upslope shift of montane ecosystems, Salces-Castellano et al. (2020) found that populations of a beetle tightly associated to cloud forests were isolated through the ice ages but in contact during interglacial periods, suggesting downslope shifts of cloud forest when temperature increases. This article is protected by copyright. All rights reserved.