Trends in Mean Annual Streamflows in Serra da Mantiqueira Environmental Protection Area



Título del documento: Trends in Mean Annual Streamflows in Serra da Mantiqueira Environmental Protection Area
Revista: Brazilian archives of biology and technology
Base de datos: PERIÓDICA
Número de sistema: 000392659
ISSN: 1516-8913
Autores: 1
Instituciones: 1Universidade Estadual Paulista "Julio de Mesquita Filho", Programa de Pos-Graduacao em Engenharia Mecanica, Guaratingueta, Sao Paulo. Brasil
Año:
Periodo: Nov-Dic
Volumen: 57
Número: 6
Paginación: 1004-1012
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, descriptivo
Resumen en inglés The aim of this study was to detect trends in the mean annual streamflow in watersheds of Serra da Man tiqueira Environmental Protection Area, an important Brazilian conservation area located between Minas Gerais, São Paulo and Rio de Janeiro States. Historical series of four selected streamgage stations were analyzed for the periods of 1980-1998 and 1980-2009, using the Mann- Kendall and Regional Mann-Kendall tests. The result s showed that the mean annual streamflows of Serra da Mantiqueira Environmental Protection Area watersheds did not change during the complete period of 1980-2009. The tests detected statistically significant trend s of reduction of mean annual streamflow during the 1980-1998 period. The confrontation of this result with the inexistence of rainfall trends during the same period suggested th at the streamflow changes detected were consequence s of changes in the watersheds physical characteristics, and/or increases in water abstraction for multiple uses
Disciplinas: Geociencias,
Biología
Palabras clave: Hidrología,
Ecología,
Matemáticas aplicadas,
Flujo,
Precipitación,
Serra da Mantiqueira,
Prueba de Mann-Kendall
Keyword: Earth sciences,
Biology,
Hydrology,
Ecology,
Applied mathematics,
Flow,
Serra da Mantiqueira,
Mann-Kendall test,
Rainfall
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