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Provedor de dados:  Acta Botanica
País:  Brazil
Título:  Post-fire resprouting strategies of woody vegetation in the Brazilian savanna
Autores:  Souchie,Fabiane Furlaneto
Pinto,Jose Roberto Rodrigues
Lenza,Eddie
Gomes,Letícia
Maracahipes-Santos,Leonardo
Silvério,Divino Vicente
Data:  2017-06-01
Ano:  2017
Palavras-chave:  Bark thickness
Cerrado sensu stricto
Disturbance
Fire
Resilience
Resumo:  ABSTRACT Post-fire response by vegetation may reflect the severity of the damage suffered, but we still know little about the species-specific nature of responses to fire or their predictors. Here, we evaluated 26 woody species before and after a fire event in an Cerrado sensu stricto area (typical Brazilian savanna-type) in order to evaluate mortality rates and the type of resprouting (epigeal, hypogeal or epigeal + hypogeal). We evaluated the relative importance of stem diameter, height, and bark thickness as predictors of the type of post-fire resprouting, using a sequential logistic regression model (SLRM). Mortality was 4 %, while epigeal resprouting was recorded in 57 % of the individuals, hypogeal resprouting was recorded in 24 %, and epigeal + hypogeal resprouting in 15 %. Our SLRM analysis indicated that bark thickness, followed by stem diameter, were the best predictors of the type of resprouting. There was a greater than 60 % probability that individuals with bark thicker than 1.6 cm resprouted only epigeally. Our results confirm the resistance (low mortality) and resilience (high resprouting capacity) of the woody vegetation of the Cerrado sensu stricto to fire, and that thick bark is an effective protection against fire damage.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200260
Editor:  Sociedade Botânica do Brasil
Relação:  10.1590/0102-33062016abb0376
Formato:  text/html
Fonte:  Acta Botanica Brasilica v.31 n.2 2017
Direitos:  info:eu-repo/semantics/openAccess
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