Aguadé-Gorgorió Guim, Arnoldi Jean-François, Barbier Matthieu, Kéfi Sonia. 2024. A taxonomy of multiple stable states in complex ecological communities. Ecology Letters, 27 (4):e14413, 14 p.
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Url - autres données associées : https://github.com/GuimAguade/A-taxonomy-of-MSS-in-complex-ecological-communities
Résumé : Natural systems are built from multiple interconnected units, making their dynamics, functioning and fragility notoriously hard to predict. A fragility scenario of particular relevance concerns so-called regime shifts: abrupt transitions from healthy to degraded ecosystem states. An explanation for these shifts is that they arise as transitions between alternative stable states, a process that is well-understood in few-species models. However, how multistability upscales with system complexity remains a debated question. Here, we identify that four different multistability regimes generically emerge in models of species-rich communities and other archetypical complex biological systems assuming random interactions. Across the studied models, each regime consistently emerges under a specific interaction scheme and leaves a distinct set of fingerprints in terms of the number of observed states, their species richness and their response to perturbations. Our results help clarify the conditions and types of multistability that can be expected to occur in complex ecological communities.
Mots-clés Agrovoc : modèle mathématique, interactions biologiques, écologie, modèle de simulation, écologie microbienne, écosystème, biocénose
Mots-clés libres : Community ecology, Complex systems, Multiple stable states, Regime shifts
Classification Agris : U60 - Sciences de la vie et de la Terre
U10 - Informatique, mathématiques et statistiques
Champ stratégique Cirad : CTS 1 (2019-) - Biodiversité
Agences de financement hors UE : Fundación Ramón Areces, Agence Nationale de la Recherche
Projets sur financement : (FRA) Modèles statistiques avancés pour les réseaux écologiques
Auteurs et affiliations
- Aguadé-Gorgorió Guim, Université de Montpellier (FRA) - auteur correspondant
- Arnoldi Jean-François, CNRS (FRA)
- Barbier Matthieu, CIRAD-BIOS-UMR PHIM (FRA)
- Kéfi Sonia, Université de Montpellier (FRA)
Source : Cirad-Agritrop (https://agritrop.cirad.fr/610322/)
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