Tocantins River
Mostrando 25-36 de 60 artigos, teses e dissertações.
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25. Caracterização citogenética de populações alopátricas do gênero Hoplias (Characiformes, Erythrinidae), com enfoque nos grupos malabaricus e lacerdae
Erythrinidae represents a relatively small family of Neotropical fish, presenting a great geographical distribution. It is composed only by three genera, Hoplias, Hoplerythrinus and Erythrinus. The genus Hoplias is most widespread in the South American continent. Two great groups, H. malabaricus and H. lacerdae are described for the Southeast Brazil, showing
Publicado em: 2010
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26. Características biológicas do peixe amazônico Cichla piquiti (Cichlidae:Perciformes) introduzido no reservatório de Cachoeira Dourada no rio Paranaíba, Brasil
The Basin of the river Tocantins-Araguaia is the natural habitat of the Cichla piquiti species, however, currently it meets widely distributed in dams of the river Paraná especially in the Minas Gerais and São Paulo states. In these subject to flooding plain ecosystems, the trophic ecology of the communities of fish is influenced by some factors that can b
Publicado em: 2010
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27. Genetic structure of red-handed howler monkey populations in the fragmented landscape of Eastern Brazilian Amazonia
We genotyped 15 microsatellite loci in order to evaluate the effects of habitat fragmentation, caused by flooding of the Tucuruí reservoir, on the genetic structure of Alouatta belzebul in eastern Amazonia. The analysis included two populations sampled in 1984, representing both margins of the Tocantins river, and three populations sampled 18 years later. M
Genetics and Molecular Biology. Publicado em: 2010
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28. Alteração no uso e cobertura do solo na bacia do médio rio Araguaia, Brasil central / Land use land and cover changes in the middle Araguaia river basin, central Brazil
The central region of the Araguaia river basin encompasses a transition area between the Tropical Rain Forest and the Cerrado in Brazil. Despite of the fact that during the last four decades, this area has undergone an intense deforestation process, the quantification and impact of these changes are still unknown. Thus this study aimed to evaluate the dynami
Publicado em: 2010
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29. Estudos de sistemática molecular e de biogeografia histórica do bagre de água doce Pseudoplatystoma Bleeker, 1862 (Pimelodidae) na América do Sul
The catfishes of the Pseudoplatystoma genus are carnivore pimelodids, migratory and important for fisheries in all major river basins from South America. Only three species were recognized for the genus (P. corruscans, P. fasciatum and P. tigrinum), but a new revision raised to eight the number of species (P. fasciatum, P. punctifer, P. orinocoense, P. magda
Publicado em: 2010
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30. Genetic characterization of native and introduced populations of the neotropical cichlid genus Cichla in Brazil
A molecular phylogenetic analysis based on mitochondrial 16S ribosomal DNA and Control Region sequences from native and introduced populations was undertaken, in order to characterize the introduction of Cichla (peacock bass or tucunaré) species in Brazil. Mitochondrial DNA haplotypes found in introduced fish from Minas Gerais state (southeastern Brazil) cl
Genetics and Molecular Biology. Publicado em: 10/07/2009
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31. A preliminary list of the Herpetofauna from termite mounds of the cerrado in the Upper Tocantins river valley
Termiteiros são conhecidos por oferecer refúgio e micro habitats para uma grande variedade de invertebrados e vertebrados. Aproveitando trabalhos realizados na área de influência de usinas hidrelétricas no vale do rio Tocantins, inspecionamos avaliamos 4.000 termiteiros visando determinar os anfíbios e répteis que se utilizam desses ambientes. Resulta
Papéis Avulsos de Zoologia (São Paulo). Publicado em: 2009
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32. PORTO NACIONAL: De Porto Real a Espaço Periférico de Palmas (TO) / PORTO NACIONAL: From the Port Royal Space Peripheral Palmas (TO)
In 1988 the old North of Goiás starts to belong to the State of Tocantins by act of the National Constituent Assembly. After long political arena of the creation of the State, immediately the geopolitical dispute of the setting of the Capitals final site starts. In deciding the location of the Capital, on the right bank of the Tocantins river, near Porto Na
Publicado em: 2009
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33. AVALIAÇÃO AMBIENTAL DA OCUPAÇÃO ESPACIAL DO VALE DO RIO TOCANTINS POR USINAS HIDRELÉTRICAS
In Brazil, due to its enormous quantity of rivers, most part of the electric energy available comes from large hydroelectric power plants. The construction of these hydroelectric enterprises involve a series of social-environmental changes on the site of location but are essential to supply the energy demand of the Country. The necessity of mitigation of the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2008
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34. Fatoração QR como ferramenta para a determinação de poços principais em redes de monitoramento de aqüíferos freáticos
Monitoring networks of piezometric motion are increasingly used for evaluation and management of aquifers. A pivoted version of the QR factorization was used in four networks, with the purpose of determining principal wells. One network is located at river Jardim watershed, at the east portion of Distrito Federal, Brazil, and the other three are located in s
Publicado em: 2008
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35. Taxonomia de Psophia viridis (Aves: Gruiformes: Psophiidae) com base em caracteres morfológicos / Taxonomy of Psophia viridis (Aves: Gruiformes: Psophiidae) based on morphological characters
The dark-winged trumpeters, Psophia viridis (Gruiformes, Psophiidae) are endemic of the Brazilian Amazônia, featuring three recognizable subspecies: Psophia viridis viridis Spix, 1825; Psophia v. dextralis Conover, 1934, and Psophia v. obscura Pelzeln, 1857, as well as P. v. interjecta Griscom &Greenway, 1937, whose validity has been questioned. These taxa
Publicado em: 2008
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36. The Eastern Amazonic Tupi complex / O complexo Tupi da Amazônia Oriental
The main aim of this study is the analysis of the ceramic material from the Cavalo Branco site, a highland Tupi site, located in the Amazon periphery, near the Tocantins River. Comparing the results obtained from this material with those from other nearby sites it was possible to make inferences about several aspects of the eastern Amazonic Tupi. The archaeo
Publicado em: 2008