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21.127  Articles
1 of 2.114 pages  |  10  records  |  more records»
The Sono river basin (SRB) is an important ecological area located at the Cerrado biome, which encompasses several environmental protection units, highlighting the Jalapão State Parque. In order to assist the water resource management, this paper develope... see more

Mudanças promovidas pelo clima e por ações antrópicas podem gerar significativos impactos sobre o regime hidrológico de uma bacia hidrográfica. Neste estudo, avaliou-se a ocorrência de tendências em séries temporais anuais de precipitação pluviométrica, t... see more

The South American river dolphins of genus Inia are distributed throughout the Amazon, Orinoco and Araguaia-Tocantins basins.  They are categorized as Endangered and the knowledge on their basic ecology is still scarce.  Therefore, investigation... see more

Termite mounds are known to offer refuge and microhabitats to a great variety of invertebrates and vertebrates. In the valley of the upper Tocantins River, within areas of influence of hydroelectric power plants 4,000 termite mounds were surveyed to evalu... see more

Current paper examines the space-time dynamics of yearly rainfall of the Tocantins-Araguaia Hydrographic Region (TAHR), foregrounded on rainfall volume from isohyet maps and interpolated by Kriging geo-statistical method.  Rainfall space dynamics was... see more

The Araguaia River is an important watercourse located in Central Brazil and well known for its diversity of fish fauna. Differences between landscape and resources in the distinct environments existing in a floodplain can determine the success of a speci... see more

The Orinoco goose, (Neochen jubata) is a grazing herbivore of open habitats that was once widely distributed in tropical South America. Centuries of overhunting and habitat loss have reduced it to widely scattered remnant populations; it is categoriz... see more

This article presents some of the results collected at the Água Fria basin, located in the middle Tocantins river valley, TO, Brazil. The main target is to identify the settlement systems set up by the social groups that have lived in the area since remot... see more

O objetivo desse estudo foi estimar a precipitação media quinzenal na bacia do Rio Tocantins a partir de dados observados simultaneamente de ocorrência de raios, incidentes em área a montante da represa da Hidroelétrica de Tucuruí. Em geral, a relação ent... see more

1 of 2.114 pages  |  10  records  |  more records»