Analysis of the Seasonal Variation of the Physical and Chemical Characteristics of the Water of the Roosevelt River, Amazonas, Brazil

Marcelo Rodrigues dos Anjos, João Ânderson Fulan, Nadja Gomes Machado, Paulo André Martins da Silva, Maria Clécia Gomes Sales, Elder Leite Barbosa and Harumy Sales Noguchi
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Marcelo Rodrigues dos Anjos: Federal University of Amazonas, Brazil
João Ânderson Fulan: Universidade Federal de São Carlos, Brazil
Nadja Gomes Machado: Federal Institute of Mato Grosso, Brazil
Paulo André Martins da Silva: Federal University of Amazonas, Brazil
Maria Clécia Gomes Sales: Federal University of Amazonas, Brazil
Elder Leite Barbosa: Federal University of Amazonas, Brazil
Harumy Sales Noguchi: Federal University of Amazonas, Brazil

International Journal of Social Ecology and Sustainable Development (IJSESD), 2021, vol. 13, issue 7, 1-14

Abstract: The goal of this work was to perform preliminary surveys over the abiotic factors of Roosevelt river, Amazonas, Brazil in four different periods: rising, flood, lowing, and dry. Four sites were monitored: P1, P2, P3 and P4. There were measured: depth, water transparency, conductivity, pH, surface water temperature and dissolved oxygen. Results showed a seasonality at the four sampling stations. The conductivity always showed high values in the flood at all sampling stations, except for P4. The pH showed low variation in all periods and sampling stations. Only depth and transparency were significant in P2. We conclude that studies are required that indicate the potential causes of conductivity variation: autochthonous or human activities. The explanation of the conductivity source is necessary since the studied area is located near a conservation area.

Date: 2021
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