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Varying effects of connectivity and dispersal on interacting species dynamics

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  • Salau, Kehinde
  • Schoon, Michael L.
  • Baggio, Jacopo A.
  • Janssen, Marco A.

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.

Suggested Citation

  • Salau, Kehinde & Schoon, Michael L. & Baggio, Jacopo A. & Janssen, Marco A., 2012. "Varying effects of connectivity and dispersal on interacting species dynamics," Ecological Modelling, Elsevier, vol. 242(C), pages 81-91.
    • Handle: RePEc:eee:ecomod:v:242:y:2012:i:c:p:81-91
    DOI: 10.1016/j.ecolmodel.2012.04.028
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    References listed on IDEAS

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    Cited by:

    1. Thierry, Hugo & Sheeren, David & Marilleau, Nicolas & Corson, Nathalie & Amalric, Marion & Monteil, Claude, 2015. "From the Lotka–Volterra model to a spatialised population-driven individual-based model," Ecological Modelling, Elsevier, vol. 306(C), pages 287-293.
    2. Aliyu, Murtala Bello & Mohd, Mohd Hafiz, 2021. "The interplay between mutualism, competition and dispersal promotes species coexistence in a multiple interactions type system," Ecological Modelling, Elsevier, vol. 452(C).
    3. Mohd, Mohd Hafiz & Murray, Rua & Plank, Michael J. & Godsoe, William, 2017. "Effects of biotic interactions and dispersal on the presence-absence of multiple species," Chaos, Solitons & Fractals, Elsevier, vol. 99(C), pages 185-194.
    4. Pérez, Irene & Janssen, Marco A., 2015. "The effect of spatial heterogeneity and mobility on the performance of social–ecological systems," Ecological Modelling, Elsevier, vol. 296(C), pages 1-11.

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