Landscape connectivity and predator-prey population dynamics

Jacopo A. Baggio, Kehinde Salau, Marcus Janssen, Michael Schoon, Örjan Bodin

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Landscapes are increasingly fragmented, and conservation programs have started to look at network approaches for maintaining populations at a larger scale. We present an agent-based model of predator-prey dynamics where the agents (i. e. the individuals of either the predator or prey population) are able to move between different patches in a landscaped network. We then analyze population level and coexistence probability given node-centrality measures that characterize specific patches. We show that both predator and prey species benefit from living in globally well-connected patches (i. e. with high closeness centrality). However, the maximum number of prey species is reached, on average, at lower closeness centrality levels than for predator species. Hence, prey species benefit from constraints imposed on species movement in fragmented landscapes since they can reproduce with a lesser risk of predation, and their need for using anti-predatory strategies decreases.

Original languageEnglish (US)
Pages (from-to)33-45
Number of pages13
JournalLandscape Ecology
Volume26
Issue number1
DOIs
StatePublished - Jan 1 2011

Keywords

  • ABM
  • Coexistence
  • IBM
  • Landscape
  • Networks
  • Predator-prey
  • Survival probabilities

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Ecology
  • Nature and Landscape Conservation

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