Human-environment feedback and the consistency ...
Document type :
Article dans une revue scientifique: Article original
Title :
Human-environment feedback and the consistency of proenvironmental behavior
Author(s) :
Ecotière, Claire [Auteur]
Centre de Mathématiques Appliquées de l'Ecole polytechnique [CMAP]
Billiard, Sylvain [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
André, Jean-Baptiste [Auteur]
Institut Jean-Nicod [IJN]
Collet, Pierre [Auteur]
Centre de Physique Théorique [CPHT]
Ferrière, Régis [Auteur]
Eco-évolution mathématique - IBENS
Méléard, Sylvie [Auteur]
Centre de Mathématiques Appliquées de l'Ecole polytechnique [CMAP]
Billiard, Sylvain [Auteur]

Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
André, Jean-Baptiste [Auteur]
Institut Jean-Nicod [IJN]
Collet, Pierre [Auteur]
Centre de Physique Théorique [CPHT]
Ferrière, Régis [Auteur]
Eco-évolution mathématique - IBENS
Méléard, Sylvie [Auteur]
Journal title :
PLoS Computational Biology
Pages :
e1011429
Publisher :
PLOS
Publication date :
2023
ISSN :
1553-734X
HAL domain(s) :
Mathématiques [math]/Probabilités [math.PR]
Sciences du Vivant [q-bio]/Ecologie, Environnement
Sciences du Vivant [q-bio]/Ecologie, Environnement
English abstract : [en]
Addressing global environmental crises such as anthropogenic climate change requires the consistent adoption of proenvironmental behavior by a large part of a population. Here, we develop a mathematical model of a simple ...
Show more >Addressing global environmental crises such as anthropogenic climate change requires the consistent adoption of proenvironmental behavior by a large part of a population. Here, we develop a mathematical model of a simple behavior-environment feedback loop to ask how the individual assessment of the environmental state combines with social interactions to influence the consistent adoption of proenvironmental behavior, and how this feeds back to the perceived environmental state. In this stochastic individual-based model, individuals can switch between two behaviors, ‘active’ (or actively proenvironmental) and ‘baseline’, differing in their perceived cost (higher for the active behavior) and environmental impact (lower for the active behavior). We show that the deterministic dynamics and the stochastic fluctuations of the system can be approximated by ordinary differential equations and a Ornstein-Uhlenbeck type process. By definition, the proenvironmental behavior is adopted consistently when, at population stationary state, its frequency is high and random fluctuations in frequency are small. We find that the combination of social and environmental feedbacks can promote the spread of costly proenvironmental behavior when neither, operating in isolation, would. To be adopted consistently, strong social pressure for proenvironmental action is necessary but not sufficient—social interactions must occur on a faster timescale compared to individual assessment, and the difference in environmental impact must be small. This simple model suggests a scenario to achieve large reductions in environmental impact, which involves incrementally more active and potentially more costly behavior being consistently adopted under increasing social pressure for proenvironmentalism.Show less >
Show more >Addressing global environmental crises such as anthropogenic climate change requires the consistent adoption of proenvironmental behavior by a large part of a population. Here, we develop a mathematical model of a simple behavior-environment feedback loop to ask how the individual assessment of the environmental state combines with social interactions to influence the consistent adoption of proenvironmental behavior, and how this feeds back to the perceived environmental state. In this stochastic individual-based model, individuals can switch between two behaviors, ‘active’ (or actively proenvironmental) and ‘baseline’, differing in their perceived cost (higher for the active behavior) and environmental impact (lower for the active behavior). We show that the deterministic dynamics and the stochastic fluctuations of the system can be approximated by ordinary differential equations and a Ornstein-Uhlenbeck type process. By definition, the proenvironmental behavior is adopted consistently when, at population stationary state, its frequency is high and random fluctuations in frequency are small. We find that the combination of social and environmental feedbacks can promote the spread of costly proenvironmental behavior when neither, operating in isolation, would. To be adopted consistently, strong social pressure for proenvironmental action is necessary but not sufficient—social interactions must occur on a faster timescale compared to individual assessment, and the difference in environmental impact must be small. This simple model suggests a scenario to achieve large reductions in environmental impact, which involves incrementally more active and potentially more costly behavior being consistently adopted under increasing social pressure for proenvironmentalism.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Source :
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