This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: New Monash University research has revealed how countries could strengthen their conservation networks by looking beyond the boundaries of national parks and protected areas—and focusing on how these areas connect. As the world races toward its commitment to conserve 30% of land and sea by 2030, researchers warn that simply adding more protected areas will not be enough to safeguard biodiversity.
Published in Nature Ecology & Evolution, the study analyzed 6,234 conservation sites across 14 countries, revealing significant opportunities to build larger, better-connected conservation networks using areas outside traditional protected reserves. The research examined other effective area-based conservation measures (OECMs): areas outside formally designated protected areas that deliver sustained, positive outcomes for biodiversity. The researchers found 27% of these sites already directly adjoin protected areas, helping to enlarge existing reserves, connect otherwise isolated habitats, buffer protected areas from surrounding pressures and bring fragmented conservation sites together into larger networks.
Meanwhile, 67% are located close by, presenting substantial opportunities to strengthen conservation networks. Monash University conservation scientist and co-author Carly Cook, an associate professor from the School of Biological Sciences, said the findings highlighted a fundamental challenge in global conservation planning. "Protecting 30% of the planet is an important ambition, but the number alone doesn't tell us whether we're protecting biodiversity effectively," Cook said.
"We need to look beyond how much land or sea is conserved and ask whether these areas work together to support species and ecosystems. If we want to create functioning conservation networks, then where we protect nature and how those areas connect are potentially more important than how much we protect." The researchers found that OECMs directly adjoining protected areas contribute approximately 1.4 million square kilometers (540,000 square miles) to existing conservation networks across the countries studied. However, just 2% of the sites directly connected otherwise isolated protected areas, demonstrating the untapped potential for more strategic conservation planning.
Cook said the findings provided governments with a practical framework for making conservation investments count. "Our research shows that areas outside national parks and reserves can play a much bigger role in conservation than simply adding hectares to a national target. They can help make existing protected areas larger, bridge gaps between isolated sites and create more cohesive conservation networks across landscapes and seascapes.
"But these benefits don't happen automatically. Governments need to think strategically about which areas they recognize and protect, and how those areas contribute to the broader conservation network." The study also found that 1,028 previously isolated protected areas or groups of protected areas could be consolidated into 242 larger clusters when OECMs were included. With less than four years remaining until the 2030 biodiversity deadline, Cook said the research offered an important opportunity to rethink how countries measure conservation progress.
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