|   | 
Détails
   web
Enregistrement
Auteur Massol, F.; Dubart, M.; Calcagno, V.; Cazelles, K.; Jacquet, C.; Kefi, S.; Gravel, D.
Titre Island Biogeography of Food Webs Type Chapitre de livre
Année 2017 Publication Revue Abrégée
Volume Numéro Pages 183-262
Mots-Clés animal abundance; body-size; complex networks; coral-reef fishes; coupled chemical-reactions; ecological communities; experimental zoogeography; habitat loss; power-laws; species-area relationship
Résumé To understand why and how species invade ecosystems, ecologists have made heavy use of observations of species colonization on islands. The theory of island biogeography, developed in the 1960s by R.H. MacArthur and E.O. Wilson, has had a tremendous impact on how ecologists understand the link between species diversity and characteristics of the habitat such as isolation and size. Recent developments have described how the inclusion of information on trophic interactions can further inform our understanding of island biogeography dynamics. Here, we extend the trophic theory of island biogeography to assess whether certain food web properties on the mainland affect colonization/extinction dynamics of species on islands. Our results highlight that both food web connectance and size on the mainland increase species diversity on islands. We also highlight that more heavily tailed degree distributions in the mainland food web correlate with less frequent but potentially more important extinction cascades on islands. The average shortest path to a basal species on islands follows a hump-shaped curve as a function of realized species richness, with food chains slightly longer than on the mainland at intermediate species richness. More modular mainland webs are also less persistent on islands. We discuss our results in the context of global changes and from the viewpoint of community assembly rules, aiming at pinpointing further theoretical developments needed to make the trophic theory of island biogeography even more useful for fundamental and applied ecology.
Adresse
Auteur institutionnel Thèse
Editeur Elsevier Academic Press Inc Lieu de Publication San Diego Éditeur Bohan, D.A.; Dumbrell, A.J.; Massol, F.
Langue English Langue du Résumé Titre Original
Éditeur de collection Titre de collection Titre de collection Abrégé Networks of Invasion: A Synthesis of Concepts
Volume de collection 56 Numéro de collection Edition
ISSN ISBN 978-0-12-804331-8 978-0-12-804338-7 Médium
Région Expédition Conférence (up)
Notes Approuvé pas de
Numéro d'Appel MARBEC @ alain.herve @ collection 2174
Lien permanent pour cet enregistrement