Fragmentation modulates the response of dichotomous landscapes to fire and seed dispersal

Juan H. Gowda, Florencia Tiribelli, Mónica Mermoz, Thomas Kitzberger and Juan Manuel Morales

Ecological Modelling, 2019, vol. 392, issue C, 22-30

Abstract: Contagious processes such as fire and seed dispersal may affect landscape structure, composition and dynamics, and are in turn modulated by structural landscape attributes. Vegetation-fire self-reinforcing processes that lead to the dominance of either pyrophyllic or pyrophobic vegetation are well documented worldwide, but it remains unclear how the interaction between spatial aggregation and contagious processes influences the dynamics of dichotomous landscapes. We subjected landscapes composed by patches of pyrophyllic and pyrophobic cells to increasing frequencies of random ignitions to assess which spatial configuration may promote long-term coexistence (i.e. resilient landscapes), and which ones may lead to dominance by either community (i.e. alternative states).

Keywords: Cross-scale interactions; Contagious processes; Spatially explicit modeling; Alternative states; Resilience (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:392:y:2019:i:c:p:22-30

DOI: 10.1016/j.ecolmodel.2018.10.014

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