IESA - Instituto de Estudos Socioambientais
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O IESA - Instituto de Estudos Socioambientais, da Universidade Federal de Goiás, oferece Graduação em: Bacharelado em Geografia; Licenciatura em Geografia; e, Ciências Ambientais. Além de Especialização (Lato Sensu) em: Educação Ambiental; e, Turismo.
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Navegando IESA - Instituto de Estudos Socioambientais por Autor "Almeida, Rejane Freitas Benevides"
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Item Análise da cobertura e uso da terra da bacia hidrográfica do Rio do Coco e suas implicações sobre as áreas de preservação permanente como instrumento na gestão dos recursos hídricos(2018-12) Almeida, Rejane Freitas Benevides; Ferreira Júnior, Laerte Guimarães; Bayer, MaximilianoStudies focused on the diagnosis of the permanent preservation areas (PPAs) in relation to the attendance of the legislation are important for the management of the water resources. In this way, the present work was aimed at the evaluation of the coverage, land use and conflicts of use in the areas of permanent preservation (PPAs) of watercourses in the Coco River basin, located on the right bank of the Araguaia River basin in the state of Tocantins. To do so, the basin's land cover and use was mapped using images from Landsat 8 (OLI - Operational Land Imager) satellite for the year 2015. For the delimitation of the PPAs, the drainage network was manually vectorized in the 1: 5000 scale, using images from the RapidEye satellite. In possession of the hydrography, PPA buffers were created, which obeyed the protection ranges defined by the legislation for each watercourse. Land use conflicts were obtained by overlapping the generated map with the image classification and PPA map. The results of the research indicated that the Coco River basin presents 56.91% of its total area covered by anthropic activities, with a deficit of 32.8% of PPA, with pasture being the dominant use. The Upper Coco River, Ribeirão Piedade and Ribeirão Surubim sub-basins presented the highest percentage of conflict, compared to the other analyzed basins, with 46.03%, 40.1% and 39.35%, respectively. Finally, it was possible to understand, from the study, the distribution of uses throughout the basin, their conflicts and its possible consequences on legally protected areas, can be an effective tool in decision making for investments in conservation actions in the Rio do Coco river basin.Item Compartimentação morfométrica da bacia do rio Coco como subsídio a análise de fragilidade ambiental(2016-12) Almeida, Rejane Freitas Benevides; Bayer, Maximiliano; Ferreira Júnior, Laerte GuimarãesThis study had as its object realizes the morphometric compartmentation of the Coco River basin. For this, it was performed the manual digitization of the drainage at scale 1:5,000 from RapidEye satellite images using ArcGIS 10.1, being used the methodology proposed by Strahler (1952) for the hierarchy of the drainage. The compartmentalization the basin it was performed in ArcGis 10.1 based on drainage analysis in the landscape (hydrograph and relief). Were defined 05 compartments (sub-basins), being: Sub-basin the Ribeirão Prata, Sub-basin the Ribeirão Piedade, Sub-basin the Ribeirão Surubim, Sub-basin the High Coco River and Sub-basin the Low Coco River, in which were applied morphometric parameters, according the methodologies described by Horton (1945), Christofoletti (1969) and Strahler (1952). From the analysis performed can be observed that the sub-basins the High Coco River and Ribeirão Piedade were the compartments that showed largest natural fragility in relation the other compartments, considering the results obtained in the morphometric analysis, suggesting a special attention to them in relation the use and occupation of soil.Item Efeitos dos conflitos de uso do solo em áreas de preservação permanente sobre a produção e transporte de sedimentos em bacias hidrográficas: o caso da bacia do Rio do Coco, Tocantins, Brasil(2020) Almeida, Rejane Freitas Benevides; Ferreira Junior, Laerte Guimaraes; Bayer, Maximiliano; Silva Junior, José Luiz Cabral daAimed at evaluate soil use conflicts in permanent preservation areas and their relationship with the production and transport of sediments in the Coco River basin. For that, were analized liquid and solid discharges carried out in the mouth of the main sub-basins, as well mapping of the uses in the PPA areas. The solid discharges were analyzed by collecting water samples to determine suspended solids using vertical integration sampling technique with samplers (DH-48 and DH-59). Flow measurements were performed through flow meters ADV and ADCP. For the mapping of land use and coverage in PPAs, were used images the Landsat 8 satellite, year 2015, being the segmentation of the images realized in the ENVI, with subsequent classification through visual inspection. The results indicated that the region of the high basin presented more irregularities in the PPAs, being also responsible for the higher production and transport of sediments, which suggests a relation with the use activities in the basin.