Dynamic performance assessment of protected areas

► Brazil's Amazonian protected area network has lost only 1.4% of natural forest. ► Fine-scale analysis in the context of human pressure reveals a range of efficacy. ► Forty-six percent of area protected since 2000 has not experienced development pressure. ► Thirty-four percent of area protected has been highly effective at preserving natural forest cover. ► Sixty-one individual protected areas have been marginally effective or are failing.