The devil in citizen science data: observation processes invalidate the causal inference that photovoltaic policy reduces bird diversity
Yangkang Chen, Wenyuan Zhang, Heng‐Xing Zou, Xu Shi, Yang Liu
The paper shows that citizen science data on bird diversity are confounded by sampling effort, invalidating claims that photovoltaic policy reduces bird diversity.
bioRxiv · Aug 27, 2026 · PreprintEcology