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Reducing species extinction by connecting fragmented habitats: Insights from the contact process

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  • Ibagon, I.
  • Furlan, A.P.
  • Dickman, Ronald

Abstract

Motivated by recent findings of enhanced species survival when fragmented habitats are reconnected through narrow strips of land (Pimm and Jenkins, 2019), we study the effect of a corridor connecting two regions on the lifetime of three models exhibiting extinction/survival phase transitions: the basic contact process (CP), the diffusive contact process, and the two-species contact process (2SCP) using Monte Carlo simulations. For the basic contact process we also present semianalytic solutions on complete graphs. We find that connecting two regions increases the lifetime when the reproduction rate is greater than its critical value. The lifetime enhancement increases with the reproduction rate; for square regions, wide and short corridors provide the best enhancement.

Suggested Citation

  • Ibagon, I. & Furlan, A.P. & Dickman, Ronald, 2022. "Reducing species extinction by connecting fragmented habitats: Insights from the contact process," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 603(C).
    • Handle: RePEc:eee:phsmap:v:603:y:2022:i:c:s0378437122004186
    DOI: 10.1016/j.physa.2022.127614
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    References listed on IDEAS

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    1. Ilkka Hanski & Otso Ovaskainen, 2000. "The metapopulation capacity of a fragmented landscape," Nature, Nature, vol. 404(6779), pages 755-758, April.
    2. Cushman, Samuel A. & Landguth, Erin L., 2012. "Multi-taxa population connectivity in the Northern Rocky Mountains," Ecological Modelling, Elsevier, vol. 231(C), pages 101-112.
    3. de Lima Filho, José A. & Vieira, Raphael J.A.G. & de Souza, Carlos A.M. & Ferreira, Fernando F. & de Oliveira, Viviane M., 2021. "Effects of habitat fragmentation on biodiversity patterns of ecosystems with resource competition," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 564(C).
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