Post-fire regeneration strategies in a frequently burned Cerrado community
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1111/jvs.12968 http://hdl.handle.net/11449/205526 |
Resumo: | Aim: 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. |
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Post-fire regeneration strategies in a frequently burned Cerrado communitygerminationheat shocksNeotropical savannapost-fire resproutingpost-fire seedingAim: 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.Fundação Grupo Boticário de Proteção à NaturezaConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Lab of Vegetation Ecology Instituto de Biociências Universidade Estadual Paulista (UNESP)Programa de Capacitação Institucional (PCI) Instituto Nacional Mata AtlânticaCentro de Investigaciones sobre Desertificación (CIDE/CSIC)Lab of Vegetation Ecology Instituto de Biociências Universidade Estadual Paulista (UNESP)Fundação Grupo Boticário de Proteção à Natureza: 0153_2011_PRCNPq: 303988/2018-5CNPq: 455183/2014-7Universidade Estadual Paulista (Unesp)Instituto Nacional Mata AtlânticaCentro de Investigaciones sobre Desertificación (CIDE/CSIC)Zupo, Talita [UNESP]Daibes, Luis Felipe [UNESP]Pausas, Juli G.Fidelis, Alessandra [UNESP]2021-06-25T10:16:56Z2021-06-25T10:16:56Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1111/jvs.12968Journal of Vegetation Science, v. 32, n. 1, 2021.1654-11031100-9233http://hdl.handle.net/11449/20552610.1111/jvs.129682-s2.0-85096670450Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Vegetation Scienceinfo:eu-repo/semantics/openAccess2021-10-23T14:48:14Zoai:repositorio.unesp.br:11449/205526Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:39:54.598223Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Post-fire regeneration strategies in a frequently burned Cerrado community |
title |
Post-fire regeneration strategies in a frequently burned Cerrado community |
spellingShingle |
Post-fire regeneration strategies in a frequently burned Cerrado community Zupo, Talita [UNESP] germination heat shocks Neotropical savanna post-fire resprouting post-fire seeding |
title_short |
Post-fire regeneration strategies in a frequently burned Cerrado community |
title_full |
Post-fire regeneration strategies in a frequently burned Cerrado community |
title_fullStr |
Post-fire regeneration strategies in a frequently burned Cerrado community |
title_full_unstemmed |
Post-fire regeneration strategies in a frequently burned Cerrado community |
title_sort |
Post-fire regeneration strategies in a frequently burned Cerrado community |
author |
Zupo, Talita [UNESP] |
author_facet |
Zupo, Talita [UNESP] Daibes, Luis Felipe [UNESP] Pausas, Juli G. Fidelis, Alessandra [UNESP] |
author_role |
author |
author2 |
Daibes, Luis Felipe [UNESP] Pausas, Juli G. Fidelis, Alessandra [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Instituto Nacional Mata Atlântica Centro de Investigaciones sobre Desertificación (CIDE/CSIC) |
dc.contributor.author.fl_str_mv |
Zupo, Talita [UNESP] Daibes, Luis Felipe [UNESP] Pausas, Juli G. Fidelis, Alessandra [UNESP] |
dc.subject.por.fl_str_mv |
germination heat shocks Neotropical savanna post-fire resprouting post-fire seeding |
topic |
germination heat shocks Neotropical savanna post-fire resprouting post-fire seeding |
description |
Aim: 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. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:16:56Z 2021-06-25T10:16:56Z 2021-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1111/jvs.12968 Journal of Vegetation Science, v. 32, n. 1, 2021. 1654-1103 1100-9233 http://hdl.handle.net/11449/205526 10.1111/jvs.12968 2-s2.0-85096670450 |
url |
http://dx.doi.org/10.1111/jvs.12968 http://hdl.handle.net/11449/205526 |
identifier_str_mv |
Journal of Vegetation Science, v. 32, n. 1, 2021. 1654-1103 1100-9233 10.1111/jvs.12968 2-s2.0-85096670450 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Vegetation Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129104039378944 |