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Erschienen in: Environmental Earth Sciences 9/2024

01.05.2024 | Original Article

Environmental impacts due to the behavior of limnological variables in water reservoirs of hydroelectric power plants

verfasst von: Assunção Andrade de Barcelos, Patrícia da Silva Gomes, Fernanda Luíza Ramalho, Hudson Moraes Rocha, João Batista Pereira Cabral, Alexandre Tadeu Paulino

Erschienen in: Environmental Earth Sciences | Ausgabe 9/2024

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Abstract

Reservoirs are artificial systems that alter the natural conditions of the environment. This transformation process affects the chemical, physical and biological properties of the water body. The objective of this study was to assess the environmental impacts due to the spatial behavior of limnological variables in water reservoirs, using the Espora Hydroelectric Power Plant (HPP) water reservoir as environmental system model. The parameters analyzed were: hydrogen potential (pH), water temperature, turbidity, transparency and chlorophyll-a content. Thirty-four collection points were selected in the model reservoir in four different periods (winter, spring, summer, and autumn). The results were compared to Brazilian legislation standards for fresh water, according to resolution no 357/2005 of the national council for the environment (Conama), and statistically evaluated through principal component analysis (PCA). The limnological parameters indicated that the water body can be classified as class 2. The first two axes of the PCA explain 62.59% of the total variation of the correlations among the physical, chemical, and biological variables, during the four sampling campaigns in the climatic seasons of the study cerrado region. Transparency, water temperature, pH, and chlorophyll-a content were the most significant variables, with correlation coefficients of 0.614, − 0.677, 0.755, and − 0.484, indicating a gradient related to the increase of the primary productivity of aquatic organisms in the reservoir. This work has useful results that can be used for the environmental monitoring of HPP water reservoirs around the world.

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Metadaten
Titel
Environmental impacts due to the behavior of limnological variables in water reservoirs of hydroelectric power plants
verfasst von
Assunção Andrade de Barcelos
Patrícia da Silva Gomes
Fernanda Luíza Ramalho
Hudson Moraes Rocha
João Batista Pereira Cabral
Alexandre Tadeu Paulino
Publikationsdatum
01.05.2024
Verlag
Springer Berlin Heidelberg
Erschienen in
Environmental Earth Sciences / Ausgabe 9/2024
Print ISSN: 1866-6280
Elektronische ISSN: 1866-6299
DOI
https://doi.org/10.1007/s12665-024-11624-z

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