Chinese mountain songbirds lose nearly half genetic diversity in 50 years

A study of common songbird species in China's mountains reveals a nearly 50% loss of genetic diversity over five decades, likely due to habitat fragmentation and climate change. This erosion of the evolutionary safety net reduces adaptive capacity, posing a long-term extinction risk. The findings highlight a broader biodiversity crisis in the region, though the exact drivers and species-specific impacts remain to be fully quantified.

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