ArticleProceedings of the National Academy of Sciences of the United States of America2025
Indigenous territories and protected areas are crucial for ecosystem connectivity in the Amazon basin.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Rapid and Intense Declines of Forest Connectivity in the Amazon Arc of Deforestation Over Four Decades.Global change biology · 2026Article
- Patterns in the distribution of Ecuadorian amphibian type localities.Scientific reports · 2026Article
- Indigenous territories and protected areas are crucial for ecosystem connectivity in the Amazon basin.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
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11 authors.
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Abstract
Ecosystem connectivity-the uninterrupted flow of natural processes within and among ecosystems-is critical for maintaining healthy ecosystem functions. However, in the Amazon drainage basin, multiple anthropogenic activities are rapidly disrupting connectivity. To assess the severity of this problem, we analyzed the spatial distributions of six major anthropogenic activities: dam construction, deforestation, fire, mining, oil and gas exploitation, and roads. We examined their impacts across four key landscapes: Amazonian Andes, lowland nonflooded forests, wetlands, and rivers. Using a resistance-based connectivity model, we quantified connectivity across terrestrial, wetland, and river ecosystems and found a marked decline in connectivity across the basin. A central focus of our study was the role of Indigenous Territories and Protected Areas (ITPAs), which collectively cover over 50% of the basin. Our findings show that ITPAs sustain significantly high levels of ecosystem connectivity. Only 14 to 16% of ITPA land is impacted by anthropogenic activities, compared to 38% in unprotected areas. Terrestrial ecosystems in the southern and eastern Amazon are heavily impacted by deforestation, mining, and fires, with significantly higher connectivity inside ITPAs than in unprotected areas (
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