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	Provedor de dados Neotropical Ichthyology (1) Autor Dias,Alesandra Martins (1) Tejerina-Garro,Francisco Leonardo (1) Palavra-chave Altamiro de Moura Pacheco (1) Anthropogenic impacts (1) Conservation unit (1) Meia Ponte River (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2010 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Changes in the structure of fish assemblages in streams along an undisturbed-impacted gradient, upper Paraná River basin, Central Brazil Neotropical Ichthyology Dias,Alesandra Martins; Tejerina-Garro,Francisco Leonardo. The João Leite River is located in the upper Paraná basin, Central Brazil. It drains areas covered by Cerrado vegetation interspersed with urban and agricultural areas. This study aims to asses changes of the fish assembleges structure along a undisturbed-impacted gradient in ten stream stretches using ecological descriptors, a similarity index and the abundance-biomass relationship (ABC curves). The fish were collected during the dry period using electrofishing gear in stretches of 50 m. Results show that the environmental variation observed along the undisturbed-impacted gradient considered influences on fish assemblage structure. Both richness and diversity differences between fish assemblages are partially influenced by stream stretch orthonian order... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthropogenic impacts; Conservation unit; Meia Ponte River; Altamiro de Moura Pacheco. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300003 Registros recuperados: 1 Primeira ... 1 ... Última

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