Diversity of frontier processes in Amazonian subnational jurisdictions: Frontier metrics reveal major patterns of human–nature interactions

Deforestation, degradation and regrowth of the tropical forests of the Amazon clearly alter forest cover. These changes in space and over time generate diverse landscape use (archetypes). Identifying the differences and similarities between units and associated changes in forest cover due to defores...

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Main Authors: Guido Briceño, Julie Betbeder, Agnès Bégué, Guillaume Cornu, David Katz-Asprilla, Marie-Gabrielle Piketty, Solen Le Clech, Vinicius Silgueiro, Hélène Dessard, Lilian Blanc
Format: Article
Language:English
Published: Elsevier 2025-02-01
Series:Ecological Indicators
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Online Access:http://www.sciencedirect.com/science/article/pii/S1470160X2500127X
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author Guido Briceño
Julie Betbeder
Agnès Bégué
Guillaume Cornu
David Katz-Asprilla
Marie-Gabrielle Piketty
Solen Le Clech
Vinicius Silgueiro
Hélène Dessard
Lilian Blanc
author_facet Guido Briceño
Julie Betbeder
Agnès Bégué
Guillaume Cornu
David Katz-Asprilla
Marie-Gabrielle Piketty
Solen Le Clech
Vinicius Silgueiro
Hélène Dessard
Lilian Blanc
author_sort Guido Briceño
collection DOAJ
description Deforestation, degradation and regrowth of the tropical forests of the Amazon clearly alter forest cover. These changes in space and over time generate diverse landscape use (archetypes). Identifying the differences and similarities between units and associated changes in forest cover due to deforestation, degradation and regrowth is crucial for context-specific management and planning. Methods for quantitatively characterizing this complexity across large agricultural frontiers are still underdeveloped. This article presents a new method to study the archetypes resulting from forest cover changes in Amazonian subnational jurisdictions by integrating spatial and temporal analysis techniques for deforestation, degradation and regrowth. The weighted k-means approach was linked to nine metrics covering the period 1990–2021 in three subnational jurisdictions of the Brazilian and Colombian Amazon: 1. baseline forest, 2. percentage forest loss, 3. remaining forest, 4. speed of forest loss, 5. active deforestation, 6. percentage forest degradation, 7. speed of forest degradation, 8. active degradation, and 9. percentage regrowth. Four optimal archetypes were chosen using k-means classification: a. consolidated frontier, b. vulnerable frontier, c. past gradual frontier and d. rampant frontier. Consolidated frontiers are areas with high and long term deforestation. Vulnerable frontiers have high forest cover but show signs of previous or recent deforestation and degradation. Past gradual and rampant frontiers show medium to high levels of deforestation associated with degradation. The importance and spatial distribution of each archetype varies at a territorial scale depending on colonization history and on the drivers of deforestation and degradation. This approach provides valuable insights for stakeholder to target interventions and policies adapted to each archetype, for example, payment for ecosystem services, command and control policies, land tenure regulations, land restoration strategies or land use intensification.
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publishDate 2025-02-01
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series Ecological Indicators
spelling doaj-art-4e5b95b0b34540a4a4962942de82d4e72025-02-09T04:59:50ZengElsevierEcological Indicators1470-160X2025-02-01171113198Diversity of frontier processes in Amazonian subnational jurisdictions: Frontier metrics reveal major patterns of human–nature interactionsGuido Briceño0Julie Betbeder1Agnès Bégué2Guillaume Cornu3David Katz-Asprilla4Marie-Gabrielle Piketty5Solen Le Clech6Vinicius Silgueiro7Hélène Dessard8Lilian Blanc9CIRAD, UR Forêts et Sociétés F-34398 Montpellier, France; Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, France; Corresponding author.CIRAD, UR Forêts et Sociétés F-34398 Montpellier, France; Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, FranceCIRAD, UMR TETIS F-34398 Montpellier, France; CIRAD, UMR TETIS, Univ Montpellier, AgroParisTech, CNRS, INRAE, Montpellier, FranceCIRAD, UR Forêts et Sociétés F-34398 Montpellier, France; Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, FranceCIRAD, UMR SENS F-34398 Montpellier, France; SENS, CIRAD, IRD, Université Paul Valery Montpellier 3, Montpelier, FranceCIRAD, UMR SENS F-34398 Montpellier, France; SENS, CIRAD, IRD, Université Paul Valery Montpellier 3, Montpelier, FranceEarth Systems and Global Change Group, Wageningen University & Research, Wageningen, the NetherlandsInstituto Centro de Vida (ICV), Alta Floresta, Mato Grosso, BrazilCIRAD, UR Forêts et Sociétés F-34398 Montpellier, France; Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, FranceCIRAD, UR Forêts et Sociétés F-34398 Montpellier, France; Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, FranceDeforestation, degradation and regrowth of the tropical forests of the Amazon clearly alter forest cover. These changes in space and over time generate diverse landscape use (archetypes). Identifying the differences and similarities between units and associated changes in forest cover due to deforestation, degradation and regrowth is crucial for context-specific management and planning. Methods for quantitatively characterizing this complexity across large agricultural frontiers are still underdeveloped. This article presents a new method to study the archetypes resulting from forest cover changes in Amazonian subnational jurisdictions by integrating spatial and temporal analysis techniques for deforestation, degradation and regrowth. The weighted k-means approach was linked to nine metrics covering the period 1990–2021 in three subnational jurisdictions of the Brazilian and Colombian Amazon: 1. baseline forest, 2. percentage forest loss, 3. remaining forest, 4. speed of forest loss, 5. active deforestation, 6. percentage forest degradation, 7. speed of forest degradation, 8. active degradation, and 9. percentage regrowth. Four optimal archetypes were chosen using k-means classification: a. consolidated frontier, b. vulnerable frontier, c. past gradual frontier and d. rampant frontier. Consolidated frontiers are areas with high and long term deforestation. Vulnerable frontiers have high forest cover but show signs of previous or recent deforestation and degradation. Past gradual and rampant frontiers show medium to high levels of deforestation associated with degradation. The importance and spatial distribution of each archetype varies at a territorial scale depending on colonization history and on the drivers of deforestation and degradation. This approach provides valuable insights for stakeholder to target interventions and policies adapted to each archetype, for example, payment for ecosystem services, command and control policies, land tenure regulations, land restoration strategies or land use intensification.http://www.sciencedirect.com/science/article/pii/S1470160X2500127XDeforestationForest degradationRegrowthAmazonArchetypes
spellingShingle Guido Briceño
Julie Betbeder
Agnès Bégué
Guillaume Cornu
David Katz-Asprilla
Marie-Gabrielle Piketty
Solen Le Clech
Vinicius Silgueiro
Hélène Dessard
Lilian Blanc
Diversity of frontier processes in Amazonian subnational jurisdictions: Frontier metrics reveal major patterns of human–nature interactions
Ecological Indicators
Deforestation
Forest degradation
Regrowth
Amazon
Archetypes
title Diversity of frontier processes in Amazonian subnational jurisdictions: Frontier metrics reveal major patterns of human–nature interactions
title_full Diversity of frontier processes in Amazonian subnational jurisdictions: Frontier metrics reveal major patterns of human–nature interactions
title_fullStr Diversity of frontier processes in Amazonian subnational jurisdictions: Frontier metrics reveal major patterns of human–nature interactions
title_full_unstemmed Diversity of frontier processes in Amazonian subnational jurisdictions: Frontier metrics reveal major patterns of human–nature interactions
title_short Diversity of frontier processes in Amazonian subnational jurisdictions: Frontier metrics reveal major patterns of human–nature interactions
title_sort diversity of frontier processes in amazonian subnational jurisdictions frontier metrics reveal major patterns of human nature interactions
topic Deforestation
Forest degradation
Regrowth
Amazon
Archetypes
url http://www.sciencedirect.com/science/article/pii/S1470160X2500127X
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