UDTR — Radar mondial des droits de la Nature

Indigenous territories and protected areas are crucial for ecosystem connectivity in the Amazon basin

Identification

Clé publique

radar:r-acf6b0e56fbffe91e4a88575f3d847fb

Auteurs

Camila Duarte Ritter · Jesús Muñoz · Arielli Fabrício Machado · James S. Albert · CAMILA CHEREM RIBAS · Ana Carolina Carnaval · Carmen Ulloa Ulloa · Juan D. Carrillo · Hanna Tuomisto · Dolors Armenteras · Juan M. Guayasamin

Année déclarée

2025

Langue déclarée

en

Type source

article

Première détection

2026-11-14T09:36:59.595262+00:00

Dernière observation des métadonnées

2026-11-14T09:36:59.595262+00:00

Dernière vérification HTTP

Non effectuée

Institutions déclarées par la source

Instituto Nacional de Pesquisas da Amazônia · Consejo Superior de Investigaciones Científicas · Real Jardín Botánico · Harvard University · Universidade Federal do Pampa · Amazon (United States) · University of Louisiana at Lafayette · The Graduate Center, CUNY · City College of New York · City University of New York · Missouri Botanical Garden · SIB Swiss Institute of Bioinformatics · University of Fribourg · University of Turku · Aarhus University · Universidad Nacional de Colombia · Universidad San Francisco de Quito

Pays d’affiliation déclarés

BR · CH · CO · DK · EC · ES · FI · US

Résumé documentaire — langue originale

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 ( P < 0.01). Wetlands and riverine ecosystems also face severe fragmentation, particularly from dams and illegal mining—but maintain stronger connectivity within ITPAs (wetlands: P < 0.01; rivers: P < 0.001), with the few remaining free-flowing Andean rivers increasingly isolated from the lowland Amazon. Strengthening governance and sustainable initiatives in ITPAs, in partnership with local inhabitants, represents an expedient, efficient, and cost-effective strategy for conserving ecosystem connectivity in the Amazon basin.

Identifiants

OPENALEX

https://openalex.org/W4412704388

DOI

10.1073/pnas.2418189122

PMID

https://pubmed.ncbi.nlm.nih.gov/40720645

PMCID

https://www.ncbi.nlm.nih.gov/pmc/articles/12337320

Repères documentaires

Famille documentaire

article

Types déclarés par les sources

article

Éditeurs

National Academy of Sciences

Les mentions d’entités ne constituent pas une preuve de reconnaissance juridique. La juridiction étudiée est distincte du pays d’affiliation des auteurs.

Sources

OpenAlex · Document 1

• Document · https://doi.org/10.1073/pnas.2418189122

Statut documentaire

Pertinence à examiner

Bibliothèque

Cette identité n’est pas encore intégrée à la Bibliothèque juridique.