Data/hora: 09/06/2024 08:39:17

Provedor de dados: 	76	
País: 	Brazil	
Título: 	Assessment of fish assemblages in streams of different orders in the Upper Paraná River basin, Central Brazil	
Autores: 	Vieira,Thiago B.; Tejerina-Garro,Francisco L.	
Data: 	2014-06-01	
Ano: 	2014	
Palavras-chave: 	Trophic guilds; Omnivores; Richness; Biomass.	
Resumo: 	The aim of this study was to test whether the richness observed and the biomass per trophic group of fish assemblages vary depending on the order (1st and 2nd) of the streams located in three different basins of the Upper Paraná River Basin, Central Brazil. Samples were collected between April and September, 2009, in 27 streams of the Meia Ponte, Piracanjuba and Santa Maria River basins. A total of 4,879 specimens were collected distributed in 59 species and 19 families. The statistical analyses carried out indicate that the observed richness and biomass of omnivore fish were influenced by the interaction of two factors: stream order and basin. The 2nd order streams located in the Santa Maria basin presented significant differences in the observed richness and omnivore biomass when compared to i) 1st order streams in the same basin (only richness) or in the Piracanjuba and Meia Ponte basin; ii) 2nd order streams in the Piracanjuba (only omnivore biomass) and Meia Ponte Rivers basins. Results are discussed considering the influence of geomorphic processes on fish assemblages and food availability.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000200007	
Editor: 	Museu de Ciências Naturais	
Relação: 	10.1590/1678-476620141042175183	
Formato: 	text/html	
Fonte: 	Iheringia. Série Zoologia  v.104 n.2 2014	
Fonte: 	info:eu-repo/semantics/openAccess