Landscape structure affects dispersal in the greater white-toothed shrew: inference between genetic and simulated ecological distances

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Ressource 1Télécharger: BIB_9DCEC6015E5B.P001.pdf (885.52 [Ko])
Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_9DCEC6015E5B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Landscape structure affects dispersal in the greater white-toothed shrew: inference between genetic and simulated ecological distances
Périodique
Ecological Modelling
Auteur(s)
Vuilleumier S, Fontanillas P.
ISSN
0304-3800
Statut éditorial
Publié
Date de publication
2007
Peer-reviewed
Oui
Volume
201
Numéro
3-4
Pages
369-376
Langue
anglais
Résumé
Animal dispersal in a fragmented landscape depends on the complex interaction between landscape structure and animal behavior. To better understand how individuals disperse, it is important to explicitly represent the properties of organisms and the landscape in which they move. A common approach to modelling dispersal includes representing the landscape as a grid of equal sized cells and then simulating individual movement as a correlated random walk. This approach uses a priori scale of resolution, which limits the representation of all landscape features and how different dispersal abilities are modelled.
We develop a vector-based landscape model coupled with an object-oriented model for animal dispersal. In this spatially explicit dispersal model, landscape features are defined based on their geographic and thematic properties and dispersal is modelled through consideration of an organism's behavior, movement rules and searching strategies (such as visual cues). We present the model's underlying concepts, its ability to adequately represent landscape features and provide simulation of dispersal according to different dispersal abilities. We demonstrate the potential of the model by simulating two virtual species in a real Swiss landscape. This illustrates the model's ability to simulate complex dispersal processes and provides information about dispersal such as colonization probability and spatial distribution of the organism's path
Mots-clé
landscape model, animal movement, dispersal behavior modelling, landscape feature, object-oriented design, spatially explicit model
Web of science
Open Access
Oui
Création de la notice
15/07/2008 13:11
Dernière modification de la notice
20/08/2019 15:04
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