Life-history traits evolved jointly with climatic niche and disturbance regime in the genus leucadendron (proteaceae)

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dc.contributor.authorTonnabel, Jeanneen_ZA
dc.contributor.authorSchurr, Frank M.en_ZA
dc.contributor.authorBoucher, Florianen_ZA
dc.contributor.authorThuiller, Wilfrieden_ZA
dc.contributor.authorRenaud, Julienen_ZA
dc.contributor.authorDouzery, Emmanuel J. P.en_ZA
dc.contributor.authorRonce, Ophelieen_ZA
dc.date.accessioned2019-09-02T07:37:12Z
dc.date.available2019-09-02T07:37:12Z
dc.date.issued2017-12-05
dc.descriptionCITATION: Tonnabel, J., et al. 2018. Life-history traits evolved jointly with climatic niche and disturbance regime in the genus leucadendron (proteaceae). American Naturalist, 191(2):220-234, doi:10.1086/695283.en_ZA
dc.descriptionThe original publication is available at https://www.journals.uchicago.eduen_ZA
dc.description.abstractENGLISH ABSTRACT: Organisms have evolved a diversity of life-history strategies to cope with variation in their environment. Persistence as adults and/or seeds across recruitment events allows species to dampen the effects of environmental fluctuations. The evolution of life cycles with overlapping generations should thus permit the colonization of environments with uncertain recruitment. We tested this hypothesis in Leucadendron (Proteaceae), a genus with high functional diversity native to fire-prone habitats in the South African fynbos. We analyzed the joint evolution of life-history traits (adult survival and seed-bank strategies) and ecological niches (climate and fire regime), using comparative methods and accounting for various sources of uncertainty. In the fynbos, species with canopy seed banks that are unable to survive fire as adults display nonoverlapping generations. In contrast, resprouters with an underground seed bank may be less threatened by extreme climatic events and fire intervals, given their iteroparity and long-lasting seed bank. Life cycles with nonoverlapping generations indeed jointly evolved with niches with less exposure to frost but not with those with less exposure to drought. Canopy seed banks jointly evolved with niches with more predictable fire return, compared to underground seed banks. The evolution of extraordinary functional diversity among fynbos plants thus reflects, at least in part, the diversity of both climates and fire regimes in this region.en_ZA
dc.description.urihttps://www.journals.uchicago.edu/doi/abs/10.1086/695283
dc.description.versionPublisher's versionen_ZA
dc.format.extent15 pages : illustrationsen_ZA
dc.identifier.citationTonnabel, J., et al. 2018. Life-history traits evolved jointly with climatic niche and disturbance regime in the genus leucadendron (proteaceae). American Naturalist, 191(2):220-234, doi:10.1086/695283en_ZA
dc.identifier.issn1537-5323 (online)
dc.identifier.issn0003-0147 (print)
dc.identifier.otherdoi:10.1086/695283
dc.identifier.urihttp://hdl.handle.net/10019.1/106411
dc.language.isoen_ZAen_ZA
dc.publisherUniversity of Chicago Pressen_ZA
dc.rights.holderThe University of Chicagoen_ZA
dc.subjectUnderground seed banksen_ZA
dc.subjectLeucadendron (Proteaceae)en_ZA
dc.subjectCanopy seed banksen_ZA
dc.subjectLife-history strategies of Leucadendron (Proteaceae)en_ZA
dc.subjectOrganisms -- Environmental aspectsen_ZA
dc.titleLife-history traits evolved jointly with climatic niche and disturbance regime in the genus leucadendron (proteaceae)en_ZA
dc.typeArticleen_ZA
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