Effectiveness of Parks in Protecting Tropical Biodiversity

This influential study assessed whether tropical protected areas actually work by surveying parks across many countries and comparing conditions inside their boundaries with the surrounding landscape. The authors found that, despite chronic underfunding and pressures, most parks were reasonably effective at stopping land clearing, logging, and hunting within their borders relative to adjacent unprotected land, and that even modest enforcement made a measurable difference. The result countered pessimism that paper parks were uniformly failing, while underscoring that performance depended on basic management capacity such as guards and boundary enforcement. The study became a foundational empirical defense of protected areas as a conservation tool. It matters for big cats because reserves are the backbone of carnivore protection, and the finding that enforcement, even imperfect, substantially reduces threats helped justify continued investment in protected-area staffing and management worldwide.