Fire has little to no effect on the enhancement of germination, but buried seeds may survive in a Neotropical wetland

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de Mato Grosso do Sul (UFMS)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniv Florida-
Autor(es): dc.creatorSoares, Vanessa C.-
Autor(es): dc.creatorScremin-Dias, Edna-
Autor(es): dc.creatorFelipe Daibes, L. [UNESP]-
Autor(es): dc.creatorDamasceno-Junior, Geraldo A.-
Autor(es): dc.creatorPott, Arnildo-
Autor(es): dc.creatorLima, Liana B. de-
Data de aceite: dc.date.accessioned2022-02-22T00:59:16Z-
Data de disponibilização: dc.date.available2022-02-22T00:59:16Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.flora.2021.151801-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/210249-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/210249-
Descrição: dc.descriptionContrasting responses of seed germination to fire have been reported in different vegetation worldwide. In Brazil, the Pantanal harbors one of the world?s most extensive floodplains, marked by flooding periods alternating with a dry fire-prone season. The present study aimed to understand the role of fire on regeneration from seed in the Pantanal wetland, using two pioneer species displaying physically dormant seeds as study models: Sesbania virgata (Cav.) Pers. and Guazuma ulmifolia Lam. Seeds were subjected to (1) heat shocks and (2) experimental burns, besides the controls. In Experiment 1, heat shocks of 65, 85, 105, 125, and 145?C (all treatments ? 5?C), were applied for 5 minutes of exposure. In Experiment 2, seeds and corky fruits were placed upon the soil surface, and seeds were buried at 2 cm belowground, then subjected to experimental burns. Germination trials were conducted under optimal conditions and recorded the proportions of germinated, hard, and dead seeds. Increasing temperature of heat shocks had an increasingly negative effect on seed water content and germination of both species as well as increasing the proportion of dead seeds. A slight enhancement in germination of buried seeds (18%) was found in the experimental burns for S. virgata seeds. Moreover, buried seeds remained hard (dormant) up to 80 and 40% for S. virgata and G. ulmifolia, respectively. Inside the corky fruits, seed germination was not promoted, and there was a decrease in the proportion of hard seeds after burning, while direct exposure to fire killed nearly all seeds placed upon the soil surface. Fire has little to no effect on the enhancement of seed germination, but seeds mainly survive when buried belowground. Our study provides crucial information to understand seed tolerance to increased fire occurrence in disturbed tropical wetlands.-
Descrição: dc.descriptionNational Institute of Science and Technology of Wetlands (INAU)-
Descrição: dc.descriptionFoundation for Support of the Development of Education, Science and Technology of the State of Mato Grosso do Sul (FUNDECT)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionUniv Fed Mato Grosso do Sul UFMS, Programa Posgrad Biol Vegetal, Inst Biociencias, Lab Sementes Bot, Cidade Univ,Caixa Postal 549, BR-79070900 Campo Grande, MS, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Biociencias, Dept Bot, UNESP, Av 24-A 1515, BR-13506900 Rio Claro, SP, Brazil-
Descrição: dc.descriptionUniv Fed Mato Grosso do Sul UFMS, Programa Posgrad Biol Vegetal, Inst Biociencias, Lab Ecol Vegetal, Cidade Univ,Caixa Postal 549, BR-79070900 Campo Grande, MS, Brazil-
Descrição: dc.descriptionUniv Florida, Sch Forest Resources & Conservat, Ecol Restorat Grad Certificate Program, Gainesville, FL 32603 USA-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Biociencias, Dept Bot, UNESP, Av 24-A 1515, BR-13506900 Rio Claro, SP, Brazil-
Descrição: dc.descriptionNational Institute of Science and Technology of Wetlands (INAU): 610033/2009-3-
Descrição: dc.descriptionFoundation for Support of the Development of Education, Science and Technology of the State of Mato Grosso do Sul (FUNDECT): 23/200.028/2009-
Descrição: dc.descriptionCNPq: 303191/2017-1-
Descrição: dc.descriptionCNPq: 307429/2019-9-
Formato: dc.format9-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationFlora-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectGuazuma-
Palavras-chave: dc.subjectHeat shock-
Palavras-chave: dc.subjectPhysical dormancy-
Palavras-chave: dc.subjectPantanal-
Palavras-chave: dc.subjectRiparian forest-
Palavras-chave: dc.subjectSesbania-
Título: dc.titleFire has little to no effect on the enhancement of germination, but buried seeds may survive in a Neotropical wetland-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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