How Scientists Mapped the Amazon’s Best Species Survival Routes
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📰 The quick summary: Scientists have published the first region-wide map of climate-resilient upslope corridors in the Amazon, identifying western Peru and the Andean spine as the most viable pathways for species to migrate to cooler elevations as temperatures rise.
📈 One key stat: Over 62% of tropical forests are no longer connected to future climate ecosystem analogues due to deforestation and habitat fragmentation, making the identification of viable upslope corridors critically urgent.
💬 One key quote: “These connected corridors are our lifeboats; we need the policy world to protect those corridors that are strong and healthy,” said Andrew Whitworth, a tropical wildlife ecologist and co-author of the study.
1️⃣ The big picture: As global temperatures rise, countless Amazon species face an urgent need to migrate to cooler, higher elevations just to survive. For the first time, scientists have mapped the most viable upslope corridors across the entire Amazon biome, pinpointing western Peru and the Andean spine as the strongest candidates. Researchers overlaid elevational gradients, forest cover, fragmentation data, and protected area boundaries across 11 ecological provinces spanning eight countries. The study, published in Global Ecology and Conservation, also flags secondary corridor opportunities in southwestern Colombia, northern Bolivia, and parts of Guyana and Suriname. Deforestation, oil and gas drilling, roads, and settlements continue to fragment many of these potential pathways, making targeted conservation action essential.
2️⃣ Why is this good news: For the first time, conservationists and policymakers across tropical South America have a concrete, science-backed map to guide where protection efforts can deliver the greatest benefit for biodiversity survival. Areas like Peru’s Manu National Park already demonstrate that well-protected, large elevational gradients can support real-time upslope species migration, offering a proven model to replicate elsewhere. Roughly 60% of the highest-priority corridor areas identified in the study are already under some form of protection, giving conservation efforts a strong foundation to build on. Identifying these corridors now gives nations, NGOs, and international donors a clear window of opportunity to act before further habitat loss closes off these natural lifelines. Protecting these routes does more than help individual species: it preserves the ecosystem services that intact tropical forests provide to billions of people globally.
3️⃣ What’s next: Researchers are calling for country-level and sub-national conversations to translate this broad-brush map into concrete land protection priorities. International donors and conservation organizations need to align funding with the elevational gradient areas the study has flagged as most critical. Further research is also needed to better understand the ecological complexities species face as they migrate upslope, including new predators, unfamiliar soils, and shifting insect communities.
Read the full story here: Mongabay – Study offers first map of Amazon’s climate-resilient upslope corridors
