ArticleCommunications earth & environment2026
Environmental variability shapes biodiversity and protected area priorities in Canada.
Article in Communications earth & environment, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Priority areas are typically identified based on mean conditions, while ignoring variance around the mean (i.e., "stochasticity'). This is problematic as high environmental stochasticity can increase extinction risk and reduce the effectiveness of protected areas. Here we use daily Normalized Difference Vegetation Index data from 1981 to 2025 to generate spatially-explicit estimates of both the mean and variance in environmental productivity across Canada. From these models, we found that environmental stochasticity shows strong spatial structure and has been steadily increasing over the past four decades. Additionally, stochasticity had a negative effect on species richness. We found no clear relationship between stochasticity and protection status, suggesting that Canada's network of protected areas are not well-buffered against a climate-change induced increase in stochasticity. Promisingly, we identified 2,709,580 km
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