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Fire and life history affect the distribution of plant species in a biodiversity hotspot

dc.contributor.authorMagadzire, Nyashaen_ZA
dc.contributor.authorDe Klerk, Helen M.en_ZA
dc.contributor.authorEsler, Karen J.en_ZA
dc.contributor.authorSlingsby, Jasper A.en_ZA
dc.date.accessioned2019-04-25T12:10:21Z
dc.date.available2019-04-25T12:10:21Z
dc.date.issued2019
dc.identifier.citationMagadzire, N., et al. 2019. Fire and life history affect the distribution of plant species in a biodiversity hotspot. Diversity and Distributions, 25(4):1-12, doi:10.1111/ddi.12921
dc.identifier.issn1472-4642 (online)
dc.identifier.issn1366-9516 (print)
dc.identifier.otherdoi:10.1111/ddi.12921
dc.identifier.urihttp://hdl.handle.net/10019.1/106257
dc.descriptionCITATION: Magadzire, N., et al. 2019. Fire and life history affect the distribution of plant species in a biodiversity hotspot. Diversity and Distributions, 25(4):1-12, doi:10.1111/ddi.12921.
dc.descriptionThe original publication is available at https://onlinelibrary.wiley.com
dc.description.abstractAim: Species distribution models (SDMs) provide valuable insights into species–environment relationships and potential climate change impacts on diversity. Most SDMs do not account for the role of natural disturbance regimes such as fire in determining current and future species distributions, or how species traits mediate their response to these stressors. Here, we investigate the importance of fire in determining the distributions of species in fire‐prone fynbos vegetation, and how this varies in relation to different life history traits (growth form and fire‐response strategy). Location: Cape Floristic Region, South Africa. Methods: We modelled the distribution of 104 plant species with different life history traits, using Maxent. The model included five climatic variables, one edaphic and one fire variable. Post hoc analyses of model output and permutation procedures were conducted to assess variable importance across different life history traits. We accounted for phylogenetic autocorrelation using sister species comparisons. Results: Permutation importance scores identified fire return interval as a major determinant of fynbos species’ distributions. Linear mixed effect analyses revealed that seeder species were significantly more sensitive to fire than resprouters. Coefficients from the (linear) response curves of the different predictors indicated that the occurrence of species across all life histories was negatively associated with longer fire return intervals. Main conclusions: Fire and life history traits governing species’ response to fire are key factors determining species distributions in our study system. SDMs that ignore the role of fire in driving species distributions, and how this varies across different life history types, compromise our ability to understand species–environment relationships in fire‐prone ecosystems. There is great need for better spatial data describing historical, current and future fire regimes and for models that can incorporate different responses based on species life histories, to improve vulnerability assessments for fire‐prone ecosystems.en_ZA
dc.description.urihttps://onlinelibrary.wiley.com/doi/abs/10.1111/ddi.12921
dc.format.extent12 pages
dc.language.isoen_ZAen_ZA
dc.publisherWiley
dc.subjectFynbosen_ZA
dc.titleFire and life history affect the distribution of plant species in a biodiversity hotspoten_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's version
dc.rights.holderAuthors retain copyright


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