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Computational Ecology and Software, 2015, 5(4): 354-366
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Article

Modelling spread with context-based dispersal strategies

Andriamihaja Ramanantoanina, Cang Hui
Department of Mathematical Sciences, Stellenbosch University, Matieland 7602, and African Institute for Mathematical Sciences, Cape Town 7945, South Africa

Received 25 July 2015;Accepted 3 August 2015;Published online 1 December 2015
IAEES

Abstract
Dispersal is a context-dependent adaptive trait. Different dispersal strategies arise as species need to optimize their fitness in the ever changing quality of habitats further imposed by abiotic and biotic factors. This work reviews the spread of populations under different dispersal strategies. Namely, we address the spread of a population when dispersal is driven by habitat fragmentations, density-dependent predation and mixed propagules. The context-based dispersal can explain a variety of range dynamics. It is of common accord however that the cause and effect of dispersal could have a wider effect on population dynamics that goes beyond purely ecological nature.

Keywords dispersal strategy;density dependence;habitat fragmentation;propagule pressure;range expansion.



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