In Papua New Guinea, village elders in the tiny coastal community of Muluk periodically close stretches of reef to fishing — a generations-old practice that, researchers discovered in 2001, appeared to be keeping those underwater ecosystems unusually healthy. That observation sparked a global search, and a new study now argues that such places, where nature is beating the odds, hold practical lessons for conservation worldwide.
The study, published by researchers who analyzed more than 70 studies across ecology, conservation, sustainability and development, formalizes what scientists call the “bright spots” approach: identifying ecosystems or species that are faring significantly better than expected given the pressures they face, including overfishing, habitat destruction, and climate change. The concept was first applied to coral reefs in 2016, when a survey of nearly 1,700 reefs worldwide found more than a dozen sites with far more fish than models predicted. Since then, other researchers have extended the framework to species and habitats on land.
Examples span the globe. In West Africa, several critically endangered chimpanzee communities are thriving despite steep regional population declines — in some cases because nearby villagers maintain traditions discouraging hunting, such as in Boé, Guinea-Bissau. In Canada’s Great Bear Rainforest, First Nations communities have helped grizzly bear populations recover by centering Indigenous stewardship in conservation policy, including a trophy hunting ban backed by both Indigenous and provincial law. Off Tasmania, an alliance of scientists, wildlife managers, and policymakers has protected the vulnerable shy albatross through targeted interventions such as treating chicks for parasites and constructing artificial nests.
Across these varied cases, the new analysis identified three recurring factors. First, successful bright spots tend to involve a specific intervention that is well-suited to local conditions — the reef closure system in Papua New Guinea being one example. Second, they occur where communities have the capacity to adapt, including the ability to pass knowledge and practices across generations. Third, the broader social and environmental context matters: in Papua New Guinea, the national constitution formally recognizes coastal communities’ rights to manage marine resources, giving villagers the legal standing to exclude outside fishers.
The researchers are careful to note that the existence of bright spots does not diminish the severity of the broader extinction crisis, in which the risk of species loss is estimated to be hundreds of times higher than pre-human baselines. Rather, they argue the positive deviance approach — borrowed from medicine and public health — complements the more common focus on documenting threats. Understanding where and why nature is succeeding, the study suggests, can provide conservationists with transferable models rather than leaving practitioners only with a catalog of failure.