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	Provedor de dados Neotropical Ichthyology (1) Autor Amaro,Ahyran (1) Coronel,Jorge (1) Rodríguez-Olarte,Douglas (1) Taphorn B.,Donald C. (1) Palavra-chave Habitat characterization (1) Index of Biotic Integrity (1) Multivariate analysis (1) National Park (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2006 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Integrity of fluvial fish communities is subject to environmental gradients in mountain streams, Sierra de Aroa, north Caribbean coast, Venezuela Neotropical Ichthyology Rodríguez-Olarte,Douglas; Amaro,Ahyran; Coronel,Jorge; Taphorn B.,Donald C.. We examined physical habitat and fish assemblages in rivers of the Aroa Mountains (Venezuela) with different levels of environmental protection due to the creation of Yurubí National Park within the drainage. We developed an Index of Biotic Integrity (IBI) and evaluated it using principal components analysis (PCA) and canonical correspondence analysis (CCA). Tributary rivers were divided into classes according to their origin (protected by the park) and physical characteristics of each, including substrate. Fishes were captured using standardized electrofishing. Fish communities showed greater species richness in heterogeneous habitat and protected rivers but overall abundance was higher in unprotected and impacted rivers. The IBI was sensitive to these... Tipo: Info:eu-repo/semantics/article Palavras-chave: Index of Biotic Integrity; Habitat characterization; Multivariate analysis; National Park. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000300003 Registros recuperados: 1 Primeira ... 1 ... Última

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