Post-fire regeneration strategies in a frequently burned Cerrado community

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorInstituto Nacional Mata Atlântica-
Autor(es): dc.contributorCentro de Investigaciones sobre Desertificación (CIDE/CSIC)-
Autor(es): dc.creatorZupo, Talita [UNESP]-
Autor(es): dc.creatorDaibes, Luis Felipe [UNESP]-
Autor(es): dc.creatorPausas, Juli G.-
Autor(es): dc.creatorFidelis, Alessandra [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:44:34Z-
Data de disponibilização: dc.date.available2022-02-22T00:44:34Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1111/jvs.12968-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205526-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205526-
Descrição: dc.descriptionAim: Fire is a natural disturbance in many ecosystems throughout the world where plant populations can persist by the resprouting of individuals and/or by recruiting from seeds. We evaluated the post-fire regeneration response for 41 coexisting species, including grasses, forbs, and shrubs, from an open Cerrado community (campo sujo) in Central Brazil. Location: The study was conducted at the Reserva Natural Serra do Tombador (RNST) in Central Brazil. The vegetation of the study area is characterized by a continuous herbaceous layer dominated by grasses and scattered shrubs, which produces fine fuel loads that can burn frequently. Methods: We examined both resprouting ability after experimental fires, accounting for bud location, and seed response to heat shocks caused by fire, where seeds were subjected to heat shocks of 100°C for one and three minutes, 200°C for one minute, and a control (untreated seeds). Results: All species were able to resprout (R+) after fire, mainly from buds located in underground structures, but also from aerial and basal buds. Seeds of most species tolerated heat shocks of 100°C for one and three minutes, but heat treatments of 200°C decreased seed viability of nearly 50% of species. Seven species, all of which had dormant seeds, showed heat-stimulated germination. In sum, 81% of the community was classified as R+PT (resprouters with heat-tolerant propagules) and 17% was R+PS (resprouters with heat-stimulated propagules). The remaining 2% (one species) was classified as R+P−, showing heat-sensitive seeds. Conclusions: Resprouting is the main post-fire regeneration strategy in Cerrado open savannas, while fire-stimulated germination, although possible, is less common in comparison to the frequency in other fire-prone ecosystems. However, in Cerrado open savannas, heat tolerance is an important trait that enables germination when favorable conditions arise.-
Descrição: dc.descriptionFundação Grupo Boticário de Proteção à Natureza-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionLab of Vegetation Ecology Instituto de Biociências Universidade Estadual Paulista (UNESP)-
Descrição: dc.descriptionPrograma de Capacitação Institucional (PCI) Instituto Nacional Mata Atlântica-
Descrição: dc.descriptionCentro de Investigaciones sobre Desertificación (CIDE/CSIC)-
Descrição: dc.descriptionLab of Vegetation Ecology Instituto de Biociências Universidade Estadual Paulista (UNESP)-
Descrição: dc.descriptionFundação Grupo Boticário de Proteção à Natureza: 0153_2011_PR-
Descrição: dc.descriptionCNPq: 303988/2018-5-
Descrição: dc.descriptionCNPq: 455183/2014-7-
Idioma: dc.languageen-
Relação: dc.relationJournal of Vegetation Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectgermination-
Palavras-chave: dc.subjectheat shocks-
Palavras-chave: dc.subjectNeotropical savanna-
Palavras-chave: dc.subjectpost-fire resprouting-
Palavras-chave: dc.subjectpost-fire seeding-
Título: dc.titlePost-fire regeneration strategies in a frequently burned Cerrado community-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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