Trophic degradation predispositions and intensity in a high-flow, silted reservoir

Bartoszek, Lilianna; Miąsik, Małgorzata; Koszelnik, Piotr

doi:10.7717/peerj.9374

Cited by 5 publications

(4 citation statements)

References 38 publications

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“…Wang et al [11] reported that both water temperature (25.3 • C in July) and pH (8.00-8.73 pH) significantly influenced the rate of phosphorus release from the sediment, but the effect of water temperature was more significant. In addition, Bartoszek et al [15] noted that the water in the reservoir does not have to be alkaline. As further emphasized by Wang et al [11], acid-base conditions favored the release of phosphorus from sediments, whereas the neutral environment did not.…”

Section: Summary Statistics Of Water Quality Parametersmentioning

confidence: 99%

“…In many cases, dam construction results in the retention of the phosphorus fraction [10,11] and nitrogen fraction in reservoir sediments [12,13]. However, due to seasonal changes, in the summer, the reservoir sediments may act as a source of surface water pollution [12,14,15]. In addition, high water pollution is observed during dry periods and intensive rainfall [16].…”

Section: Introductionmentioning

confidence: 99%

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Determination of Changes in the Quality of Surface Water in the River—Reservoir System

et al. 2021

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Assessing the changing parameters of water quality at different points in the river–reservoir system can help prevent river pollution and implement remedial policies. It is also crucial in modeling water resources. Multivariate statistical analysis is useful for the analysis of changes in surface water quality. It helps to identify indicators that may be responsible for the eutrophication process of a reservoir. Additionally, the analysis of the water quality profile and the water quality index (WQI) is useful in assessing water pollution. These tools can support and verify the results of a multivariate statistical analysis. In this study, changes in water quality parameters of the Turawa reservoir (TR), and the Mała Panew river at the point below the Turawa reservoir (bTR) and above the Turawa reservoir (aTR), were analyzed. The analyzed period was from 2019 to 2020 (360 samples were analyzed). It was found that TN, NO2-N, and NO3-N decreased after passing through the Turawa reservoir. Nevertheless, principal component analysis (PCA) and redundancy analysis (RDA) showed that NO2-N and NO3-N contribute to the observed variability of the water quality in the river-reservoir system. PCA showed that pH and PO4-P had a lower impact on the water quality in the reservoir than nitrogen compounds. Additionally, RDA proved that the values of the NO3-N and NO2-N indicators obtained the highest values at the aTR point, PO4-P at the bTR, and pH at the TR. This allows the conclusion that the Turawa reservoir reduced the concentration of NO2-N and NO3-N in comparison with the concentration of these compounds flowing into the reservoir. PCA and RDA showed that both parameters (NO2-N and NO3-N) may be responsible for the eutrophication process of the Turawa reservoir. The analysis of short-term changes in water quality data may reveal additional sources of water pollution. High temperatures and alkaline reaction may cause the release of nitrogen and phosphorus compounds from sediments, which indicates an increased concentration of TP, PO4-P, and Norg in the waters at the TR point, and TP, PO4-P, and NH4-N concentrations at the bTR point. The water quality profile combined with PCA and RDA allows more effective monitoring for the needs of water management in the reservoir catchment area. The analyzed WQI for water below the reservoir (bTR) was lower than that of the reservoir water (TR), which indicates an improvement in water after passing through the reservoir.

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Section: Summary Statistics Of Water Quality Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of Changes in the Quality of Surface Water in the River—Reservoir System

et al. 2021

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“…Rainwater may be contaminated with microorganisms already at the stage of precipitation formation, during the runoff from the surface from which it is collected or at rainwater harvesting systems [19].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Microbiological Quality Changes of Roof-Harvested Rainwater Stored in the Tanks

et al. 2021

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Rainwater has been found to be a valuable source of drinking water in Europe, especially in such crisis situations as those caused by contamination of water uptake into water supply systems, large-scale floods or terrorist attacks (e.g., biological weapons). The microbiological quality of water plays a significant role, which is directly related to the potential health risks associated with harvested rainwater (including rainwater stored in the tanks). Microbial contamination is commonly found in rainwater. However, in the literature, detailed results of qualitative and quantitative microbiological assessments are sparse and remain unexplored. Therefore, the aim of this study was to investigate and analyze changes in the microbiological quality of roof-harvested rainwater stored in the tanks, depending on the collection conditions (type of roof surface), storage duration and season. Authors elucidate that conditions such as storage duration, the season in which rainwater is collected, the roof-like surface types and morphology of the catchment area highly affect rainwater quality. This study showed that rainwater harvested from a galvanized steel sheet roof had the best microbial quality, regarding the lowest number of bacteria, while rainwater from a flat roof covered with epoxy resin was the worst. Further, it was detected that rainwater collected in autumn and spring obtained the best microbiological quality. Moreover, a decrease in the number of bacteria was observed in correlation to storage duration. The water became sanitary safe after six weeks of storage at 12 °C. Its use for purposes requiring drinking water quality before six weeks of storage required disinfection.

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“…Brodie [19] in a study reported that E. coli and other pathogens can enter roofharvested rainwater through aerosol deposition, tree litter, and animal faecal matter. Rainwater may be contaminated with microorganisms already at the stage of precipitation formation, during the runoff from the surface from which it is collected or at rainwater harvesting systems [20]. Thus, this could have influenced the coliforms and other microorganisms in the water samples.…”

Section: Discussionmentioning

confidence: 99%

Microbiological Assessment of Rainwater and Air Quality of Some Areas in Port Harcourt

Owhonka,

Otokin,

Victor K.

et al. 2023

SAJRM

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The microbiological quality of Rainwater and air of the market, hospital, and residential area was evaluated. Roof-harvested and direct rainwater samples were collected from the three aforementioned locations. The air quality was investigated using the plate sedimentation method. Culture-based techniques were used for the enumeration and isolation of microorganisms in water samples, while the identities were confirmed using morphological, microscopic, and biochemical tests. The range of the total heterotrophic bacterial counts (THBC) of rainwater was 1.2±7.1x106 to 6.1±1.1 x106 cfu/ml, total coliform count (TCC) ranged between 8.0±0.00 x103 to 30.5 ±2.1 x103 cfu/ml, faecal coliform counts (FCC) ranged between 1.0±0.00×103 to 6.0±0.00×103 cfu/ml, fungal counts ranged from 2.0±0.00x103 to 11.0±0.00x103 cfu/ml. The THB, TCC, and FCC of the air samples, ranged between 0.04±0.02 to 0.13±0.04 cfu/min-m2, 0.01±0.00to 0.03±0.00 cfu/min-m2, and 0.01±0.00 to 0.02±0.00 cfu/min-m2, respectively. There was a significant difference (P≤ 0.05) in the total heterotrophic bacterial load of the roof-harvested rainwater and the direct rainwater of the residential area, roof-harvested and direct rainwater of the hospital. Statistically, there was a significant difference (P≤ 0.05) in the total coliform counts of the water with the coliform counts of the roof-harvested rainwater of the market being significantly higher than the coliform counts recorded in other locations. Seven bacterial genera belonging to Micrococcus sp, Staphylococcus, Escherichia coli, Proteus sp, Pseudomonas sp, Enterobacter sp, and Bacillus sp were isolated. The fungal isolates were Candida sp, Mucor sp, Rhizopus sp, Penicillium sp, Aspergillus niger, and Aspergillus flavus. The results showed that rainwater is not fit for consumption due to its components and can cause harm to individuals if consumed without treatment. proper treatment is recommended before consumption. The results also showed that the microbiological quality of the air samples was influenced by their environment.

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Trophic degradation predispositions and intensity in a high-flow, silted reservoir

Cited by 5 publications

References 38 publications

Determination of Changes in the Quality of Surface Water in the River—Reservoir System

Determination of Changes in the Quality of Surface Water in the River—Reservoir System

Investigation of Microbiological Quality Changes of Roof-Harvested Rainwater Stored in the Tanks

Microbiological Assessment of Rainwater and Air Quality of Some Areas in Port Harcourt

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