Detalhes bibliográficos
| Ano de defesa: |
2007 |
| Autor(a) principal: |
CAMPOS, Antonio Eduardo Lopes
 |
| Orientador(a): |
NUNES, Gilvanda Silva |
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal do Maranhão
|
| Programa de Pós-Graduação: |
PROGRAMA DE PÓS-GRADUAÇÃO EM BIODIVERSIDADE CONSERVAÇÃO/CCBS
|
| Departamento: |
DEPARTAMENTO DE BIOLOGIA/CCBS
|
| País: |
Brasil
|
| Palavras-chave em Português: |
|
| Palavras-chave em Inglês: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
http://tedebc.ufma.br:8080/jspui/handle/tede/1855
|
Resumo: |
This study aims to perform a physical characterization and to evaluate the environmental impacts provoked by the Ribeira landfill in the Sabino’s bayou, which is part of the basin of Tibiri, in São Luís, state of Maranhão. Physical-chemical and morphometrical analyses have been made, and also bibliographical and cartographical surveys on the sub-basin of Sabino (Sabino’s bayou). As field parameter, pH, water temperature, conductivity, flow velocity of channel, sinuosity, shape of transversal section, area of transversal section and river discharge have been measured. By means of laboratory analyses, oxygen dissolved in water, oxygen biochemical demand and tenors of heavy metals (Pb, Hg, Zn, Cu, Cd, Ni and Fe) have been determined. The results obtained to the circularity index, factor of form and coefficient of compactness show that the sub-basin has an enlongated form being little susceptible to floodings. The concentration of dissolved oxygen is below the level permitted by CONAMA legislation (up to 5 mg/l) in almost all sampled areas. In the first sampled area, it has been detected a high DB05 in several months of the year and the tenors of Hg, Pb, Zn, Cu, and Fe are above the levels permitted by CONAMA legislation, which shows various impacts in the area studied. |
