Effects of rainfall patterns on water quality in a stratified reservoir subject to eutrophication: Implications for management

Li, Xuan; Huang, Tinglin; Wei-xing, MA; Sun, Xin; Zhang, Haihan

doi:10.1016/j.scitotenv.2015.03.062

Cited by 85 publications

(46 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The metalimnion was determined to be where the temperature decreased by 0.5 °C over 1 m depth or less [24][25][26]. Water chemical parameters were analyzed as previously described [1,27]. Concentrations of total nitrogen (TN) and total phosphorus (TP) were measured using ultraviolet spectrophotometry and ammonium molybdate spectrophotometry after alkaline potassium persulfate digestion under high temperature (DR5000 spectrophotometer, Hach).…”

Section: Water Physical and Chemical Analysismentioning

confidence: 99%

Effects of Seasonal Thermal Stratification on the Functional Diversity and Composition of the Microbial Community in a Drinking Water Reservoir

Yang

Zhang

2015

Water

Self Cite

View full text Add to dashboard Cite

Abstract:The microbial communities within reservoir ecosystems are shaped by water quality and hydrological characteristics. However, there are few studies focused on the effects of thermal stratification on the bacterial community diversity in drinking water reservoirs. In this study, we collected water samples from the Jinpen Reservoir around the re-stratification period. To explore the functional diversity and bacterial community composition, we used the Biolog method and 16S rRNA-based 454 pyrosequencing combined with flow cytometry. The results indicated that stratification of the reservoir had great effects on temperature and oxygen profiles, and both the functional diversity and the composition of the bacterial community strongly reflected the significant vertical stratification in the reservoir. The results of the Biolog method showed a significantly higher utilization of carbon sources in the hypolimnion than in the epilimnion. The result of pyrosequencing also showed a significantly higher species diversity and richness in the hypolimnion than in the epilimnion with different dominant phylum. Redundancy analysis also indicated that the majority of environmental variables, especially pH and dissolved oxygen, played key roles in shaping bacterial community composition. Our study provides a better understanding of the functional diversity of bacterial communities, and the response of microorganisms to seasonal thermal stratification. OPEN ACCESSWater 2015, 7 5526

show abstract

Section: Water Physical and Chemical Analysismentioning

confidence: 99%

Effects of Seasonal Thermal Stratification on the Functional Diversity and Composition of the Microbial Community in a Drinking Water Reservoir

Yang

Zhang

2015

Water

Self Cite

View full text Add to dashboard Cite

show abstract

“…The water quality of reservoirs has been observed to vary seasonally in tandem with changes in temperature and rainfall [17][18][19]. The low and high precipitation during dry and wet seasons in a tropical country like Malaysia can greatly change the water quality of the reservoir.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, high volume of inflow following heavy rainfall promotes mixing and disturbs stratification in the reservoir. The increase of bottom dissolved oxygen level in the well-mixed reservoir inhibits the release of nutrients from sediments causing a rapid reduction of phytoplankton concentration in the reservoir [17].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Changes and Spatial Variation in Water Quality of a Large Young Tropical Reservoir and Its Downstream River

Ling

Gerunsin

Soo

et al. 2017

Journal of Chemistry

View full text Add to dashboard Cite

This study examined the water quality of the large young tropical Bakun hydroelectric reservoir in Sarawak, Malaysia, and the influence of the outflow on the downstream river during wet and dry seasons. Water quality was determined at five stations in the reservoir at three different depths and one downstream station. The results show that seasons impacted the water quality of the Bakun Reservoir, particularly in the deeper water column. Significantly lower turbidity, SRP, and TP were found during the wet season. At 3-6 m, the oxygen content fell below 5 mg/L and hypoxia was also recorded. Low NO 2 − -N, NO 3 − -N, and SRP and high BOD 5 , OKN, and TP were observed in the reservoir indicating organic pollution. Active logging activities and the dam construction upstream resulted in water quality deterioration. The outflow decreased the temperature, DO, and pH and increased the turbidity and TSS downstream. Elevated organic matter and nutrients downstream are attributable to domestic discharge along the river. This study shows that the downstream river was affected by the discharge through the turbines, the spillway operations, and domestic waste. Therefore, all these factors should be taken into consideration in the downstream river management for the health of the aquatic organisms.

show abstract

“…The water content in heavy metals depends on the water depth. In warm seasons, water is stratified due to the incomplete or lower recirculation between the superficial layer of water, the epilimnion, and the deeper layer hypolimnion [17]. Thus, the deeper layer is excluded from gas exchange with the atmosphere, leading to anoxic conditions at the bottom of the reservoir.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the deeper layer is excluded from gas exchange with the atmosphere, leading to anoxic conditions at the bottom of the reservoir. In these anaerobic conditions, reduced chemical species, especially Fe and Mn are released from the sediments and enter the hypolimnion [2,17].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Evolution and Depth Variability of Heavy Metal Concentrations in the Water of Firiza-Strîmtori Lake, NW of Romania

Dippong¹,

Mihali²,

Goga³

et al. 2017

Studia UBB Chemia

View full text Add to dashboard Cite

ABSTRACT. The paper follows the spatial variability and seasonal evolution of the heavy metal content of the Firiza-Strîmtori Reservoir that is the main source of drinking water for Baia Mare city located in the northwestern part of Romania. Water samples were collected from 10 sampling points located along the median line of the lake at different depths (at surface, at 5 m, 10 m, 15 m and 20 m). The experiments were carried out in the winter, spring, summer and autumn of 2015. We determined the concentration -depth profiles, both for the heavy metals iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), cadmium (Cd), lead (Pb) and also for sodium (Na), potassium (K), calcium (Ca) and magnesium (Mg). We determined the concentrations of heavy metals by atomic absorption spectrometry. We found that concentrations of heavy metals increase with depth. Generally, the concentrations of heavy metals are within the legal limits for the water used as drinking water sources. Mathematical models with high correlation coefficients were obtained in the case of heavy metal concentrations depending on depth and also for the seasonality of heavy metals upload.

show abstract

Effects of rainfall patterns on water quality in a stratified reservoir subject to eutrophication: Implications for management

Cited by 85 publications

References 32 publications

Effects of Seasonal Thermal Stratification on the Functional Diversity and Composition of the Microbial Community in a Drinking Water Reservoir

Effects of Seasonal Thermal Stratification on the Functional Diversity and Composition of the Microbial Community in a Drinking Water Reservoir

Seasonal Changes and Spatial Variation in Water Quality of a Large Young Tropical Reservoir and Its Downstream River

Seasonal Evolution and Depth Variability of Heavy Metal Concentrations in the Water of Firiza-Strîmtori Lake, NW of Romania

Contact Info

Product

Resources

About