River Confluence
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. The influence of a large reservoir on the reproductive activity of the white piranha, Serrasalmus brandtii (Lütken, 1875) in Southeast Brazil
Resumo: Com o objetivo de avaliar a influência da barragem de Três Marias na reprodução da piranha branca, Serrasalmus brandtii, foram analisados 1569 exemplares capturados de junho de 2011 a maio de 2012 em três trechos da bacia do rio São Francisco: seção 1 = reservatório de Três Marias (RTM); seção 2 = segmento do rio São Francisco (SRF) imed
Biota Neotrop.. Publicado em: 25/02/2019
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2. GEOCHEMISTRY OF SUSPENDED PARTICULATE MATTER IN A TROPICAL ESTUARINE SYSTEM, SOUTHEASTERN BRAZIL
The aim of this study is to assess the variation of the geochemistry of suspended particulate matter (SPM) in the tropical estuarine system composed of the adjacent Piraquê-Açu and Piraquê-Mirim (ES) rivers using SPM sampled with sediment traps (45 µm mesh) installed in the drainage channels. We collected SPM during different tidal stages and seasonal pe
Quím. Nova. Publicado em: 2017-09
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3. Modelo de simulação em base horária da vazão na estação fluviométrica da régua-11 = : Simulation model in hourly basis of the flow at the fluviometric station R-11 / Simulation model in hourly basis of the flow at the fluviometric station R-11
The fluviometric station of rule 11, or simply R-11, is situated downstream from the confluence of the Paraná, Iguaçu, Acaray and Monday rivers, about 20 km away from Itaipu Hydroelectric Power Plant on the border between Brazil, Paraguay and Argentina. This region is subject to restrictions imposed by international agreements such as the implementation of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012
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4. IdentificaÃÃo de Ãreas de preservaÃÃo permanente e de conflitos potenciais de uso no setor centro-leste do planalto de Francisco BeltrÃo â SW/PR / Identification of areas for permanent preservation and potential conflicts of use sector in central eastern highlands of Francisco BeltrÃo â SW/PR
The survey shows permanent preservation areas and use of potential conflicts in the sector East-Central Plateau of Francisco BeltrÃo, Southwest of ParanÃ. The analysis was performed based on the recognition of the physical topography and hydrography characteristics as well as the existing land use in the area using geoprocessing techniques. The sectors of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/10/2011
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5. Acute and chronic toxicity evaluation at Jundiaí river, influent and effluent from Novo Horizonte Wastewater Treatment Plant (NHWWP), Jundiaí, São Paulo / Avaliação de toxicidade aguda e crônica em águas do Rio Jundiaí e em afluentes e efluentes da ETE Novo Horizonte,Jundiaí, São Paulo
Jundiaí is located approximately 60 kilometers from São Paulo and has a population of 342,983 habitants which 94.37% lives in urban areas. Jundiaí is included in the Jundiaí River basin witch is formed from the confluence of River Jundiaizinho with Ribeirão das Taipas, it has a length of 123 kilometers and its mouth is located in Salto, at the confluenc
Publicado em: 2009
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6. Aplicação do modelo do ligante biótico-BLM-para a predição da biodisponibilidade de zinco nas águas do Rio São Francisco
The São Francisco River, in Brazil, has been impacted by many activities located along its watershed, such as: electricity generation, industry, sewer discharge, agriculture. A zinc metallurgical plant that belongs to Votorantim Metais Zinco S.A., located aside São Francisco bank, in the city of Três Marias (Minas Gerais State) has been studying the influ
Publicado em: 2007
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7. Análise de dinâmica de fluxo e da morfologia na confluência dos Rios Ivaí e Paraná, PR/MS
Confluências de rios aluviais são locais de complexa hidráulica, cujos canais competem pela força, estrutura e condições de escoamento do fluxo ao constituírem um canal único. O presente trabalho analisa a dinâmica e a estrutura dos fluxos na confluência de dois importantes rios tropicais: o Paraná (Qmédia = 8.912 m3.s-1) e o Ivaí (Qmédia = 728
Publicado em: 2007
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8. Critérios para avaliação da qualidade de sedimentos - Estudo de caso: Sub-bacia do Ribeirão Espírito Santo, afluente do Rio São Francisco / Criteria for evaluating sediment quality - Case Study: Sub-Watershed of Espírito Santo Stream; Affluent of the São Francisco River
Sediment Quality Values Guidelines (SQVG) have been used for evaluating ecological risk associated with the sediment contamination for benthonic organisms. The main objective of this work was to develop methodologies and to collect data that allowed the application of SQVG for the following metals: Cd, Cu, Pb, Ni and Zn. The location chosen for the case stud
Publicado em: 2007
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9. A planície aluvial do médio rio araguaia: processos geomorfológicos e suas implicações ambientais / The alluvial plain of the middle Araguaia River: geomorphological processes and their environmental implications
The Araguaia River is the most important fluvial system of South America. With an area of 380.000Km, its includes two phytogeography regions that have a good part of planet biodiversity: Cerrado, in the south, and Amazonia Forest, in the north of Brazil. The high level of Cerrado ecosystem destruction and changes in the land using, after 1965, promoted an in
Publicado em: 2006
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10. O cidadão como sujeito de governo: planejamento e gestão pública compartilhada na Bacia do rio Caraiva
It is only a citizen the one that effectively governs. The revitalization of the Aristotelian definition leads this investigation about viability of autonomy in processes of shared public administration. It accompanies the implementation of a citizenship chain for administration of the Caraíva river basin, in the Atlantic Forest Central Corridor, in extreme
Publicado em: 2006
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11. Study of amazon floodplain water composition using hyperion/EO-1 and field reflectance data for the comprehension of temporal variability of optically active constituents / Estudo da composição das águas da planície amazônica por meio de dados de reflectância do sensor hyperion/EO-1 e de espectrômetro de campo visando a compreensão da variação temporal dos seus constituintes opticamente ativos
Two methodological approaches were evaluated to study the reflectance of optically active constituents using hyperspectral imagery of EO-1 Hyperion orbital sensor: a) Linear Spectral Mixture Model; and b) derivative analysis. Two Hyperion images acquired over an area located upstream of the confluence between the Amazon and the Tapajós rivers were analysed,
Publicado em: 2006
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12. Avaliação da qualidade de sedimentos dos rios Tietê e Piracicaba nos seus compartimentos de entrada no reservatório de Barra Bonita, SP / Sediments quality evaluation of Tietê and Piracicaba rivers in the entrance compartments of Barra Bonita reservoirs
Along the last decades, Barra Bonita reservoir has been suffering with its water quality degradation, once its majors tributaries (Piracicaba and Tietê rivers) are inserted in high anthropic development regions. The monitoring of the water quality has suffered substancial changes, when considering the sediment as an integrator site of the processes ocurred
Publicado em: 2004