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A Voronoi diagram based population model for social species of wildlife

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  • Stewart, Christopher William
  • van der Ree, Rodney

Abstract

A population model is presented that accounts for spatial structure within habitat patches. It is designed for social species of wildlife that form social group home ranges that are much smaller than patch size. The model represents social group home ranges by Voronoi regions that tessellate a patch to form a Voronoi diagram. Neighbouring social groups are linked with habitat-confined shortest paths and form a dispersal network. The model simulates population dynamics and makes use of Voronoi diagrams and dispersal networks as a spatial component. It then produces density maps as outputs. These are maps that show predicted animal densities across the patches of a landscape. A construction procedure for the particular Voronoi diagram type used by the model is described. As a test case, the model is run for the squirrel glider (Petaurus norfolcensis), a small arboreal marsupial native to Australia. A time series of density maps are produced that show squirrel glider density changing across a landscape through time.

Suggested Citation

  • Stewart, Christopher William & van der Ree, Rodney, 2010. "A Voronoi diagram based population model for social species of wildlife," Ecological Modelling, Elsevier, vol. 221(12), pages 1554-1568.
    • Handle: RePEc:eee:ecomod:v:221:y:2010:i:12:p:1554-1568
    DOI: 10.1016/j.ecolmodel.2010.03.019
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    References listed on IDEAS

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    1. Drielsma, Michael & Ferrier, Simon & Manion, Glenn, 2007. "A raster-based technique for analysing habitat configuration: The cost–benefit approach," Ecological Modelling, Elsevier, vol. 202(3), pages 324-332.
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