Data/hora: 16/06/2024 09:45:01

Provedor de dados: | Revista Brasileira de Botânica
País: | Brazil
Título: | Dispersal modes and fruiting periods in hyperseasonal and seasonal savannas, central Brazil
Autores: | Silva,Igor Aurélio; Cianciaruso,Marcus Vinicius; Batalha,Marco Antônio.
Data: | 2009-03-01
Ano: | 2009
Palavras-chave: | Cerrado; Dispersal modes; Guilds; Phenology; Waterlogging.
Resumo: | Seasonal savannas are characterized by an intense drought that influences their functioning. Hyperseasonal savannas experience additionally a waterlogging during the rainy season. In South America, the largest savanna environment is the Brazilian cerrado. To assess whether a particular dispersal mode or fruiting period is associated to the waterlogging, we examined dispersal and phenological groups in hyperseasonal and seasonal cerrado plant species. We compared the proportion of species and individuals in these groups with G-tests for independence in contingency tables. We did not find differences in the proportion of species; however, based on the proportion of individuals, the main dispersal strategy was anemochory in the hyperseasonal cerrado and zoochory in the seasonal cerrado. Phenological strategies of fruiting in safe periods of the year were differently selected in both cerrados. In the hyperseasonal cerrado, most individuals fruited in non-waterlogged periods, whereas in the seasonal cerrado, most individuals fruited in wetter periods. Thus, waterlogging may drive important modifications in the efficiency of the dispersal and phenological strategies of hyperseasonal savannas plants.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000100015
Editor: | Sociedade Botânica de São Paulo
Relação: | 10.1590/S0100-84042009000100015
Formato: | text/html
Fonte: | Brazilian Journal of Botany  v.32 n.1 2009
Fonte: | info:eu-repo/semantics/openAccess