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

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Type
Article: article from journal or magazin.
Collection
Publications
Title
Landscape structure affects dispersal in the greater white-toothed shrew: inference between genetic and simulated ecological distances
Journal
Ecological Modelling
Author(s)
Vuilleumier S, Fontanillas P.
ISSN
0304-3800
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
201
Number
3-4
Pages
369-376
Language
english
Abstract
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
Keywords
landscape model, animal movement, dispersal behavior modelling, landscape feature, object-oriented design, spatially explicit model
Web of science
Open Access
Yes
Create date
15/07/2008 14:11
Last modification date
20/08/2019 16:04
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