Invasions of ecological communities: Hints of impacts in the invader's growth rate

Arnoldi Jean-François, Barbier Matthieu, Kelly Ruth, Barabás György, Jackson Andrew. 2022. Invasions of ecological communities: Hints of impacts in the invader's growth rate. Methods in Ecology and Evolution, 13 (1) : 167-182.

https://doi.org/10.1111/2041-210X.13735

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Url - autres données associées : https://github.com/mrcbarbier/invasions

Résumé : Theory in ecology and evolution often relies on the analysis of invasion processes, and general approaches exist to understand the early stages of an invasion. However, predicting the long-term transformations of communities following an invasion remains a challenging endeavour. We propose a general analytical method that uses both resident community and invader dynamical features to predict whether an invasion causes large long-term impacts on the invaded community. This approach reveals a direction in which classic invasion analysis, based on initial invasion growth rate, can be extended. Indeed, we explain how the density dependence of invasion growth, if properly defined, synthetically encodes the long-term biotic transformations caused by an invasion, and therefore predicts its ultimate outcome. This approach further clarifies how the density dependence of the invasion growth rate is as much a property of the invading population as it is one of the invaded community. Our theory applies to any stable community model, and directs us towards new questions that may enrich the toolset of invasion analysis, and suggests that indirect interactions and dynamical stability are key determinants of invasion outcomes.

Mots-clés Agrovoc : espèce envahissante, modèle de simulation, écologie, technique de prévision, écologie des populations, dynamique des populations, interactions biologiques, modélisation

Mots-clés libres : Adaptive dynamics, Alternative stable states, Coexistence, Ecological stability, Extinctions, Feedback loops, Invasion fitness, Press perturbation

Classification Agris : P01 - Conservation de la nature et ressources foncières
U60 - Sciences de la vie et de la Terre
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement européennes : European Research Council, European Commission

Programme de financement européen : H2020

Projets sur financement : (EU) BIOdiversity, STAbility and sustainability in Spatial Ecological and social-ecological Systems

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