"Almost 1,000 oyamel firs ( Abies religiosa ) have been transplanted to a mountain in Michoacán, where they are growing at elevations beyond what was considered the species’ upper limit. If the trees survive over the next few decades, they could help to shield the migratory eastern population of monarch butterflies ( Danaus plexippus ), which spend the winter roosting in oyamel fir forests, from the impacts of climate change. This population of monarchs, which migrates up to 4,500 kilometres from the United States and Canada to Mexico, has declined dramatically since the 1990s, owing to climate change and habitat destruction."
https://www.nature.com/articles/d41586-024-03377-3
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