Data/hora: 09/06/2024 05:22:45

Provedor de dados: 	Acta Botanica Brasilica	
País: 	Brazil	
Título: 	Spatial distribution, association patterns and richness of tree species in a seasonal forest from the Serra Geral formation, southern Brazil	
Autores: 	Sühs,Rafael Barbizan; Budke,Jean Carlos.	
Data: 	2011-09-01	
Ano: 	2011	
Palavras-chave: 	Rarefaction; Diversity metrics; Spatial association; Aggregation.	
Resumo: 	This study aimed to determine the spatial distribution of the most abundant tree species, to look for relationships that may be responsible for their distribution and to compare the expected richness along the Serra Geral formation in the state of Rio Grande do Sul , Brazil. An one-hectare plot was divided in 100 contiguous 10 x 10 m sampling units and all individuals with at least 4.8 cm diameter at breast high were measured and identified. Each sampling unit received a description of the spatial position through metric coordinates (x,y) in order to quantify the spatial pattern. Later, an association index among species was applied. The observed richness was rarefied and compared to other surveys located on the slopes of Serra Geral in Rio Grande do Sul. We surveyed 1,063 individuals belonging to 69 species and 33 families, and the Shannon's diversity index showed a diversity of 3.35 nats (Pielou's species evenness - J' = 0.79). Most species showed an aggregated distribution. Both association and dissociation patterns occurred among species leading to distinct forest patches. The rarefaction results showed a decrease of Atlantic species, which were replaced by typical seasonal forest species, when analyzing floristic contingents towards the west.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300014	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/S0102-33062011000300014	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.25 n.3 2011	
Fonte: 	info:eu-repo/semantics/openAccess