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	Provedor de dados Neotropical Ichthyology (4) BABT (1) Autor Tejerina-Garro,Francisco Leonardo (5) Carvalho,Rodrigo Assis (1) Dias,Alesandra Martins (1) Ibañez,Carla (1) Maldonado,Mabel (1) Melo,Cesar Enrique de (1) Melo,Tatiana Lima de (1) Mérona,Bernard de (1) Oberdorff,Thierry (1) Pont,Didier (1) Roset,Nicolas (1) Mais... Palavra-chave ANOSIM (1) Altamiro de Moura Pacheco (1) Amazon region (1) Anthropogenic impacts (1) Biological indices (1) Community ecology (1) Comté River (1) Conservation unit (1) Ecological interactions (1) Environmental parameters (1) Fish community (1) Functional descriptors (1) Functional ecology (1) Habitat (1) Hydromorphology (1) Meia Ponte River (1) Physicochemical variables (1) RLQ analysis (1) Tocantins-Araguaia river basin (1) Mais... Tipo do documento Info:eu-repo/semantics/article (5) Ano 2015 (1) 2010 (2) 2009 (1) 2005 (1) País Brazil (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Flow seasonality and fish assemblage in a tropical river, French Guiana, South America Neotropical Ichthyology Tejerina-Garro,Francisco Leonardo; Mérona,Bernard de. The objective of this study is to verify the existence of a seasonal pattern of variation in the fish assemblages of a tropical river using taxonomic and functional descriptors. Fish were sampled using gillnets at two sites on the Comté River, a large-sized river 254.8 km long, flowing entirely through rainforest areas of French Guiana. Samplings were conducted every other month from August 1998 to July 2000. Four types of fish assemblage descriptors were used: the species descriptor (number of individual fish of each species in the sample); the family descriptor (number of individual fish of each family in the sample); the trophic descriptor (distribution of the fish biomass in each feeding guild) and the specific maximum observed size - MOS (number of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Comté River; Amazon region; Functional descriptors. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100017 Influence of environmental parameters on fish assemblage of a neotropical river with a flood pulse regime, Central Brazil Neotropical Ichthyology Melo,Tatiana Lima de; Tejerina-Garro,Francisco Leonardo; Melo,Cesar Enrique de. This study aims to determine which of twelve environmental parameters (five physicochemical and seven hydromorphological) influence on the fish assemblage structure of the lower Mortes River basin located in the Bananal floodplain of the Araguaia River basin, Central Brazil. Sampling was conducted in six stretches of 1000 m each during the high and low waters. Fish were captured using gill nets and environmental parameters were measured by portable equipment or determined visually. The co-inertia analysis indicated that two physicochemical (dissolved oxygen and water transparency), and four hydromorphological (channel width and depth, riparian vegetation cover and type of the riverside substrate) parameters structure the fish assemblages, both driven by... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecological interactions; Physicochemical variables; Hydromorphology. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300009 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 The influence of environmental variables on the functional structure of headwater stream fish assemblages: a study of two tropical basins in Central Brazil Neotropical Ichthyology Carvalho,Rodrigo Assis; Tejerina-Garro,Francisco Leonardo. We investigated functional patterns of fish assemblages of two adjacent basins (Araguaia and Tocantins) to test whether their headwater stream fish assemblages are more functionally (dis)similar than expected by chance and whether these (dis)similarities are related to differences of environmental conditions between basins. We used an analysis of similarities (ANOSIM) on a functional dissimilarity matrix to test for (dis)similarities between fish assemblages of both basins. We performed RLQ and fourth-corner analyses to determine fish species trait-environment relationship. Our results revealed functional dissimilarities between fish assemblages of both basins and significant species trait-environment relationships, suggesting that environmental conditions... Tipo: Info:eu-repo/semantics/article Palavras-chave: ANOSIM; Community ecology; Functional ecology; RLQ analysis; Tocantins-Araguaia river basin. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200349 Effects of natural and anthropogenic environmental changes on riverine fish assemblages: a framework for ecological assessment of rivers BABT Tejerina-Garro,Francisco Leonardo; Maldonado,Mabel; Ibañez,Carla; Pont,Didier; Roset,Nicolas; Oberdorff,Thierry. Freshwater is a basic need for the mankind. Effective biological tools (ecologically based, efficient, rapid and consistently applicable to different ecological regions) are needed to measure the "health" of rivers. Adapting such tools over a broad geographic area requires a detailed understanding of both the patterns of organisms assemblage composition and distribution within and among water bodies under natural conditions, and the nature of the major environmental gradients that cause or explain these patterns. A comprehensive review of the available litterature dealing with the identification of environmental factors structuring riverine fish assemblages under natural conditions permits to identify the most consistent ones. Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological indices; Fish community; Environmental parameters; Habitat. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100013 Registros recuperados: 5 Primeira ... 1 ... Última

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