Fire cues and germination of invasive and native grasses in the Cerrado

Página do item simplificado
dc.contributor.authorGorgone-Barbosa, Elizabeth [UNESP]
dc.contributor.authorDaibes, Luis Felipe [UNESP]
dc.contributor.authorNovaes, Rafael B. [UNESP]
dc.contributor.authorPivello, Vania Regina
dc.contributor.authorFidelis, Alessandra [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2020-12-10T19:54:01Z
dc.date.available2020-12-10T19:54:01Z
dc.date.issued2020-01-01
dc.description.abstractFire-related cues may enhance seed recruitment in flammable ecosystems and differences in fire-germination responses of invasive vs. native species can drive the invasion process. We evaluated the effects of heat shock and smoke water solution treatment on seed germination of invasive (Melinis minutiflora, Urochloa decumbens, U. brizantha) and native grasses (Axonopus pressus, Aristida setifolia, Gymnopogon foliosus) of the Cerrado. The effect of fire temperature was tested by exposing seeds to heat shock treatments of 60, 100, and 200 degrees C for one minute, comparing them to untreated seeds. The effect of smoke was tested by soaking seeds for 24-h in an aqueous smoke comparing them to seeds soaked in distilled water. Differences among treatments were evaluated by ANOVA and randomization tests. None of the tested species had germination stimulated by the temperature or smoke. Both species of Urochloa experienced decreased viability with increasing temperature, while seeds of native species and M. minutiflora tolerated heat shock up to 200 degrees C. The invasive grasses usually germinated faster than the native grasses. Germination time is therefore a crucial trait driving the invasion process, irrespective of fire-related cues. Other seed traits (e.g. dormancy) and higher resprouting capacity may help invasive species to persist in frequently burned savannas.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Lab Ecol Vegetacao, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Inst Biociencias, Dept Ecol, BR-05508090 Sao Paulo, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Lab Ecol Vegetacao, BR-13506900 Rio Claro, SP, Brazil
dc.description.sponsorshipFundacao Grupo Boticario de Protecao a Natureza
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFundacao Grupo Boticario de Protecao a Natureza: 0153_2011_PR
dc.description.sponsorshipIdFundacao Grupo Boticario de Protecao a Natureza: 0106_ 2011_PR
dc.description.sponsorshipIdCNPq: 476334/2011-0
dc.description.sponsorshipIdCNPq: 455183/2014-7
dc.description.sponsorshipIdFAPESP: 2015/06743-0
dc.description.sponsorshipIdCNPq: 305253/2015-8
dc.description.sponsorshipIdCNPq: 306170/2015-9
dc.format.extent185-191
dc.identifierhttp://dx.doi.org/10.1590/0102-33062019abb0337
dc.identifier.citationActa Botanica Brasilica. Sao Paulo Sp: Soc Botanica Brasil, v. 34, n. 1, p. 185-191, 2020.
dc.identifier.doi10.1590/0102-33062019abb0337
dc.identifier.fileS0102-33062020000100185.pdf
dc.identifier.issn0102-3306
dc.identifier.scieloS0102-33062020000100185
dc.identifier.urihttp://hdl.handle.net/11449/196718
dc.identifier.wosWOS:000521733100018
dc.language.isoeng
dc.publisherSoc Botanica Brasil
dc.relation.ispartofActa Botanica Brasilica
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectAfrican grasses
dc.subjectCerrado grasses
dc.subjectfire temperature
dc.subjectMelinis minutiflora
dc.subjectsmoke solution
dc.subjectUrochloa brizantha
dc.subjectUrochloa decumbens
dc.titleFire cues and germination of invasive and native grasses in the Cerradoen
dc.typeArtigo
dcterms.rightsHolderSoc Botanica Brasil
unesp.author.orcid0000-0001-9545-2285[5]

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
S0102-33062020000100185.pdf
Tamanho:
2.85 MB
Formato:
Adobe Portable Document Format
Baixar

Coleções

Artigos - Ecologia - IBRC