Autores
John D Reeve, James T Cronin, Kyle J Haynes
Fecha de publicación
2008/9
Revista
Journal of Animal Ecology
Volumen
77
Número
5
Páginas
898-904
Editor
Blackwell Publishing Ltd
Descripción
- 1Animals move commonly through a variety of landscape elements and edges in search of food, mates and other resources. We developed a diffusion model for the movement of an insect herbivore, the planthopper Prokelisia crocea, that inhabits a landscape composed of patches of its host plant, prairie cordgrass Spartina pectinata, embedded in a matrix of mudflat or smooth brome Bromus inermis.
- 2We used mark–release–resight experiments to quantify planthopper movements within cordgrass–brome and cordgrass–mudflat arenas. A diffusion model was then fitted that included varying diffusion rates for cordgrass and matrix, edge behaviour in the form of a biased random walk and heterogeneity among planthoppers (sessile vs. mobile). The model parameters were estimated by maximum likelihood using the numerical solution of the diffusion model as a probability density. Akaike's information criterion …
Citas totales
Artículos de Google Académico
JD Reeve, JT Cronin, KJ Haynes - Journal of Animal Ecology, 2008