Limnological researchs in a stretch of the Moji-Guaçu river. II. Chemical characteristics.

Authors

  • Maria Helena MAIER Pesquisador Cientí­­fico - Seção de Limnologia da Divisão de Pesca de Interior do Instituto de Pesca
  • Maria Amália BASILE-MARTINS Pesquisador Cientí­­fico - Seção de Limnologia da Divisão de Pesca de Interior do Instituto de Pesca
  • Márcia Navarro CIPÓLLI Pesquisador Cientí­­fico - Seção de Limnologia da Divisão de Pesca de Interior do Instituto de Pesca
  • Airton Luiz VIEIRA Técnico de Laboratório - Seção de Limnologia .Atualmente farmacêutico da Seção de Biologia Aquática da Divisão de Pesca Interior do Instituto de Pesca
  • Ercius Gerbi DE CHIARA Técnico de Laboratório - Seção de Limnologia da Divisão de Pesca Interior do Instituto de Pesca Atualmente Quí­­mico da PLASCAR Indústria de Plástico Reforçado - São Paulo - SP

Keywords:

NíO CONSTA

Abstract

In this research, developed during the period from October 1973 to September 1975, the main chemical features of the waters of a stretch of the Moji-Guaçu River were considered. This work is part of a study that includes also the investigation of physical and biological features as well the influence of the effluents of sugar-mil factories over limnological characteristics. The variables investigated through sampling and field works at five points, comprised: electrical conductivity, alcalinity, hydrogen potential, ammonia, nitrite, nitrate, phosphate, silica (soluble), iron (total) and oxygen (dissolved). The data show that values of the water characteristics change markedly according to the rainy and dry seasons but do not exhibit sensible variations among the points studied.

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Published

2018-06-06

Issue

Vol. 7 No. único (1980): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article