Data/hora: 01/06/2024 18:51:36

Provedor de dados: | 88
País: | Brazil
Título: | Floristic and vegetation structure of a granitic grassland in Southern Brazil
Autores: | Ferreira,Pedro Maria de Abreu; Müller,Sandra Cristina; Boldrini,Ilsi Iob; Eggers,Lilian.
Data: | 2010-03-01
Ano: | 2010
Palavras-chave: | Campos; Diversity; Fire; Relict vegetation; Similarity; Threatened species.
Resumo: | A floristic and structural survey of a natural grassland community was conducted on Morro do Osso, a granitic hill in Porto Alegre, RS, Brazil. Structural data were surveyed in 39 one square meter plots placed over two major grassland areas. An accidental fire has occurred in one of the areas approximately one year prior to our survey, leading to further analysis of parameters differences between sites. The floristic list contains 282 species, whereas the structural survey has found 161 species. Families with highest accumulated importance values were Poaceae, Asteraceae and Fabaceae. The diversity and evenness indexes were 4.51 nats ind-1 and 0.86, respectively. Cluster analysis denoted two groups coinciding with the areas distinguished by the fire disturbance. A similarity analysis between our data and two other data sets from nearby granitic hills resulted in 28% to 35% similarity, with equivalent species-family distribution and many common dominant species, corroborating the concept of a continuous flora along the South Brazilian granitic hills.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000100004
Editor: | Sociedade Botânica de São Paulo
Relação: | 10.1590/S0100-84042010000100004
Formato: | text/html
Fonte: | Brazilian Journal of Botany  v.33 n.1 2010
Fonte: | info:eu-repo/semantics/openAccess