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The objective of the work is to analyze the quantity and the physical-chemical and biological quality of the water of the Espírito Santo stream and also to better understand phytoplankton density and species 1Universidade Federal de Juiz de Fora UFJF, Brasil. Institucional de Bolsas de Iniciação Científica: IX PIBIC/CNPQ/UFJF nas Ações Afirmativas 2017/2018. Mestranda em Biodiversidade e Conservação da Natureza. Contato: emilia.brovini@engenharia.ufjf.br 2 UFJF, Brasil. Institucional de Bolsas de Iniciação Científica: IX PIBIC/CNPQ/UFJF nas Ações Afirmativas – 2017/2018. Engenheiro Ambiental e Sanitarista. 3 UFJF, Brasil.Mestranda em Biodiversidade e Conservação da Natureza. 4 UFJF, Brasil. Professora do Departamento de Zoologia Instituto de Ciências Biológicas. 5 UFJF, Brasil. Professora do Departamento de Engenharia Ambiental e Sanitária. 6 Orientadora.Endereço: Rua José Lourenço Kelmer, Martelos,telefone: (32) 2102-3419 (ramal: 211). Contato: mariahelena.gomes@ufjf.edu.br Principia – Caminhos da Iniciação Científica, Juiz de Fora, v. 19, n. 2, 2019   2 Universidade Federal de Juiz de Fora Pró-Reitoria de Pós-Graduação e Pesquisa (PROPP) www.ufjf.br/propp richness in water and its nutrient limitation. The study was carried out through during 10 sampling seasons over 5 years at 3 points along the basin. Point 1 located in a rural environment. Point 2 located after the water intake from the Water Treatment Station. Point 3 crosses the Industrial District of the Juiz de Fora. Point 1 had a greater influence on the physical-chemical parameters with increased in the flow in comparison with points 2 and 3. This fact can be explained by the contribution of the carrying of compounds by the rain. Some measured flow rates were lower than Q7.10, revealing the importance of a continuing monitoring. Points 2 and 3 were influenced by the discharge of effluents, which makes the water nutritionally richer than in point 1, forming a favorable environment to the dominance of phytoplankton. Even so, point 3 is the most degraded, having more parameters that do not comply with the standards.

Avaliação temporal da quantidade e da qualidade físico-química e biológica das águas do ribeirão Espírito Santo