Abstract

Increased landscape fragmentation can have deleterious effects on terrestrial biodiversity. The use of protected areas, as islands of conservation, has limits to the extent of biodiversity conservation due to isolation and scale. As a result, there is a push to transition from solely developing protected areas to policies that also support corridor management. Given the complexities of multi-species interaction on a fragmented landscape, managers need additional tools to aid in decision-making and policy development. We develop an agent-based model (ABM) of a two-patch metapopulation with local predator-prey dynamics and variable, density-dependent species dispersal. The goal is to assess how connectivity between patches, given a variety of dispersal schema for the targeted interacting populations, promotes coexistence among predators and prey. The experiment conducted suggests that connectivity levels at both extremes, representing very little risk and high risk of species mortality, do not augment the likelihood of coexistence while intermediate levels do. Furthermore, the probability of coexistence increases and spans a wide range of connectivity levels when movement is less probabilistic and more dependent on population feedback. Knowledge of these connectivity tradeoffs is essential for assessing the value of habitat corridors, and can be further elucidated under the agent-based framework.

Original languageEnglish (US)
Pages (from-to)81-91
Number of pages11
JournalEcological Modelling
Volume242
DOIs
StatePublished - Sep 10 2012

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connectivity
coexistence
protected area
habitat corridor
predator
biodiversity
metapopulation
policy development
aid
fragmentation
decision making
mortality
effect
experiment

Keywords

  • Agent-based model
  • Density-dependent dispersal
  • Habitat connectivity
  • Landscape fragmentation
  • Metapopulation
  • Predator-prey

ASJC Scopus subject areas

  • Ecological Modeling

Cite this

Varying effects of connectivity and dispersal on interacting species dynamics. / Salau, Kehinde; Schoon, Michael; Baggio, Jacopo A.; Janssen, Marcus.

In: Ecological Modelling, Vol. 242, 10.09.2012, p. 81-91.

Research output: Contribution to journalArticle

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