Caracterização hidrogeoquímica de água subterrânea em área de influência de futuras instalações de usinas hidrelétricas: bacia hidrográfica do rio Taquari-Antas/RS, Brasil

Scopel, Rejane Maria; Teixeira, Elba Calesso; Binotto, Raquel Barros

doi:10.1590/s0100-40422005000300004

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…For the determination of cations (Na + , K + , Mg 2+ , and Ca 2+ ) and anions (F − , Cl − , NO 3 − , PO 4 2− and SO The ionic balance was performed by calculating the product of the charges by the concentration (µeq L − 1 ) of each ion (Scopel et al, 2005). For this, we considered the major ionic species present in the samples.…”

Section: Device and Conditionsmentioning

confidence: 99%

Spatio-temporal study of water quality variables in the Rio de Ondas Hydrographic Basin, west of Bahia, Brazil using multivariate analysis

do Rego,

Portela,

de Lima Ribeiro

et al. 2023

Environ Monit Assess

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Water bodies are containers that receive a large load of pollutants through the release of domestic, industrial, and agricultural e uents. With this focus, this work aimed to conduct a temporal-spatial variability study in the Rio de Ondas Hydrographic Basin through multivariate statistical analysis. For this, seventeen collection sites were established in four stations along the Rio de Ondas and its tributaries between 2017 and 2018. Ionic chromatography with suppressed conductivity was used for ions determination, while ICP-OES determined metals' total concentrations. The land use and occupation assessment between 1985 and 2015 was conducted using images from Landsat 5 and 8 satellites and the descriptive and multivariate analysis of the data using version 10 of the Statistica software. The results showed that, in thirty years, there was a growth of 569% of agricultural activities in the watershed area, with signi cant suppression of native vegetation, favoring the transport of pollutants to rivers. Ca 2+ , PO 4 2− , Al, Cu, and Zn concentrations showed a statistically signi cant difference between the seasons, with higher medians in the rainy season. Rainy season in uenced the formation of three groups in the PCA, consisting of electrical conductivity, salinity, TDS, and PO 4 2− (group 1); temperature, Fe, SO 4 2− and Cl − (group 2); and Ca 2+ , Mg 2+ , Na + , and HCO 3 − (group 3). The strong correlation between parameters of each group indicates anthropic in uence on the watershed's water quality. However, levels are within the potability standard.

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Section: Device and Conditionsmentioning

confidence: 99%

Spatio-temporal study of water quality variables in the Rio de Ondas Hydrographic Basin, west of Bahia, Brazil using multivariate analysis

do Rego,

Portela,

de Lima Ribeiro

et al. 2023

Environ Monit Assess

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“…The study was carried out in the CERAN Complex, comprised of an approximately 100 km longitudinal extension located approximately 200 km upstream of the confluence of the Taquari River with the Jacuí River (Scopel et al, 2005). The CERAN Complex consists of three dams in sequence that were built and started operating in different years (Figure 1, Table S1).…”

Section: Study Areamentioning

confidence: 99%

Dam cascade in run‐of‐river systems promotes homogenisation of fish functional traits in a plateau river

Ticiani

Larentis

Carvalho

et al. 2022

Ecology of Freshwater Fish

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Impoundments caused by dams are often responsible for intense changes in physical, chemical, geomorphological and hydrological characteristics of rivers, and are one of the main causes in global freshwater biodiversity declines. When these changes derive from multiple cascading dams, the cumulative effect can amplify, causing more pronounced consequences than each individual reservoir, which may affect, among other factors, the biotic and functional conditions of fish fauna. We aim to evaluate the impact of dam cascades on fish functional diversity by applying trait‐based analysis. We evaluate the functional attributes (functional indices and community‐weighted means of trait values) and environmental variables at 11 sites, which encompassed different segments affected by the hydroelectric plants (transition, reservoir, reduced discharge section and tributary) in the Antas River Basin dam cascade system located in southern Brazil. The spatial differences of the functional indices (richness, evenness, divergence, dispersion and diversity) as well as the weighted averages of each functional trait were tested through analysis of variance. The most affected functional characteristics were those related to habitat exploration by detritivorous species, especially the use of food resources and body shape, as well as the type of swimming movement. These traits were more representative at the most downstream site of the complex. Thus, our results suggest that the cascade of dams acts in the functional homogenisation of the ichthyofauna in the intermediate stretches, mainly reflecting physical changes in habitat.

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Spatio-temporal Study of Pollutants in the Rio De Ondas Hydrographic Basin, West of Bahia, Brazil Using Multivariate Analysis

Rego

Portela

Ribeiro

et al. 2022

Preprint

View full text Add to dashboard Cite

Water bodies are containers that receive a large load of pollutants through the release of domestic, industrial, and agricultural effluents. With this focus, this work aimed to conduct a temporal-spatial variability study in the Rio de Ondas Hydrographic Basin through multivariate statistical analysis. For this, seventeen collection sites were established in four stations along the Rio de Ondas and its tributaries between 2017 and 2018. Ionic chromatography with suppressed conductivity was used for ions determination, while ICP-OES determined metals' total concentrations. The land use and occupation assessment between 1985 and 2015 was conducted using images from Landsat 5 and 8 satellites and the descriptive and multivariate analysis of the data using version 10 of the Statistica software. The results showed that, in thirty years, there was a growth of 569% of agricultural activities in the watershed area, with significant suppression of native vegetation, favoring the transport of pollutants to rivers. Ca2+, PO42−, Al, Cu, and Zn concentrations showed a statistically significant difference between the seasons, with higher medians in the rainy season. Rainy season influenced the formation of three groups in the PCA, consisting of electrical conductivity, salinity, TDS, and PO42− (group 1); temperature, Fe, SO42− and Cl− (group 2); and Ca2+, Mg2+, Na+, and HCO3− (group 3). The strong correlation between parameters of each group indicates anthropic influence on the watershed's water quality. However, levels are within the potability standard.

show abstract

Caracterização hidrogeoquímica de água subterrânea em área de influência de futuras instalações de usinas hidrelétricas: bacia hidrográfica do rio Taquari-Antas/RS, Brasil

Cited by 3 publications

References 3 publications

Spatio-temporal study of water quality variables in the Rio de Ondas Hydrographic Basin, west of Bahia, Brazil using multivariate analysis

Spatio-temporal study of water quality variables in the Rio de Ondas Hydrographic Basin, west of Bahia, Brazil using multivariate analysis

Dam cascade in run‐of‐river systems promotes homogenisation of fish functional traits in a plateau river

Spatio-temporal Study of Pollutants in the Rio De Ondas Hydrographic Basin, West of Bahia, Brazil Using Multivariate Analysis

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