Application of mass-balance modelling to assess the effects of ecological restoration on energy flows in a subtropical reservoir, China

Wang, Qianqian; Wang, Lin; Zheng, Yu; Chen, Zhongbing; Yang, Yang; Lin, Hsing‐Juh; Yang, Xiaoqin; Wang, Tuan‐Tuan

doi:10.1016/j.scitotenv.2019.01.334

Cited by 13 publications

(7 citation statements)

References 38 publications

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“…A four-year ecological restoration project was initiated at Yantian Reservoir in October 2014, and completed in December 2017. During this period, a 10,000-m 2 ecological restoration area was constructed to reduce nutrient loading and mitigate the consequences of eutrophication and to provide food and habitat for fish and mollusks ( Wang et al, 2019 ). Fish were harvested to maintain system stability.…”

Section: Discussionmentioning

confidence: 99%

“…The reservoir draws water from the Shima River Basin, a tributary of the Dongjiang River in the tropical and subtropical regions of Guangdong. The reservoir has an area of 25.6 km 2 and a storage capacity of 8.99 million m 3 ; it provides potable water for residents of the Pearl River Delta ( Wang et al, 2019 ). The reservoir provides drinking water for 1.3 million people and supplies 350,000 m 3 of water per day.…”

Section: Introductionmentioning

confidence: 99%

“…It also plays an important role in flood control. Nutrient concentrations in adjacent inflow rivers have increased because of the rapid development of township corporations over the last few decades ( Wang et al, 2019 ). The reservoir’s waters are vulnerable to eutrophication and algal blooms, and the aquatic ecosystem is deteriorating into simplified food networks with inferior water quality ( Wang et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

“…Nutrient concentrations in adjacent inflow rivers have increased because of the rapid development of township corporations over the last few decades ( Wang et al, 2019 ). The reservoir’s waters are vulnerable to eutrophication and algal blooms, and the aquatic ecosystem is deteriorating into simplified food networks with inferior water quality ( Wang et al, 2019 ). Given this situation, a 10-km 2 restoration project was initiated in 2015 to remove excess nutrients and inhibit algal blooms in the eutrophic bay of the reservoir, which involved stocking fish and increasing areal coverage of submerged vegetation ( Wang et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

“…The reservoir’s waters are vulnerable to eutrophication and algal blooms, and the aquatic ecosystem is deteriorating into simplified food networks with inferior water quality ( Wang et al, 2019 ). Given this situation, a 10-km 2 restoration project was initiated in 2015 to remove excess nutrients and inhibit algal blooms in the eutrophic bay of the reservoir, which involved stocking fish and increasing areal coverage of submerged vegetation ( Wang et al, 2019 ). Planting submerged hydrophytes and stocking herbivorous, planktivorous, and molluscivorous fish enhanced water quality by stabilizing plankton micro-ecosystems and reducing the content of nutrients.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of environmental factors and microbial community structure in an important drinking-water reservoir across seasons

Feng¹,

Zhou²,

Zhao³

et al. 2023

Front. Microbiol.

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The composition of microbial communities varies in water and sediments, and changes in environmental factors have major effects on microbiomes. Here, we characterized variations in microbial communities and physicochemical factors at two sites in a large subtropical drinking water reservoir in southern China. The microbiomes of all sites, including the diversity and abundance of microbial species, were determined via metagenomics, and the relationships between microbiomes and physicochemical factors were determined via redundancy analysis. The dominant species in sediment and water samples differed; Dinobryon sp. LO226KS and Dinobryon divergens were dominant in sediment samples, whereas Candidatus Fonsibacter ubiquis and Microcystis elabens were dominant in water. The diversity was also significantly different in microbial alpha diversity between water and sediment habitats (p < 0.01). The trophic level index (TLI) was the major factor affecting the microbial community in water samples; Mycolicibacterium litorale and Mycolicibacterium phlei were significantly positively related to TLI. Furthermore, we also studied the distribution of algal toxin-encoding genes and antibiotic-resistant genes (ARGs) in the reservoir. It found that water samples contained more phycotoxin genes, with the cylindrospermopsin gene cluster most abundant. We found three genera highly related to cylindrospermopsin and explored a new cyanobacteria Aphanocapsa montana that may produce cylindrospermopsin based on the correlation through network analysis. The multidrug resistance gene was the most abundant ARG, while the relationship between ARGs and bacteria in sediment samples was more complicated than in water. The results of this study enhance our understanding of the effects of environmental factors on microbiomes. In conclusion, research on the properties, including profiles of algal toxin-encoding genes and ARGs, and microbial communities can aid water quality monitoring and conservation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evaluation of environmental factors and microbial community structure in an important drinking-water reservoir across seasons

Feng¹,

Zhou²,

Zhao³

et al. 2023

Front. Microbiol.

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Application of environmental DNA metabarcoding to identify fish community characteristics in subtropical river systems

Wang,

Wu,

Song

et al. 2024

Ecology and Evolution

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Fish are vital in river ecosystems; however, traditional investigations of fish usually cause ecological damage. Extracting DNA from aquatic environments and identifying DNA sequences offer an alternative, noninvasive approach for detecting fish species. In this study, the effects of environmental DNA (eDNA), coupled with PCR and next‐generation sequencing, and electrofishing for identifying fish community composition and diversity were compared. In three subtropical rivers of southern China, fish specimens and eDNA in water were collected along the longitudinal (upstream–downstream) gradient of the rivers. Both fish population parameters, including species abundance and biomass, and eDNA OTU richness grouped 38 sampling sites into eight spatial zones with significant differences in local fish community composition. Compared with order‐/family‐level grouping, genus‐/species‐level grouping could more accurately reveal the differences between upstream zones I−III, midstream zones IV−V, and downstream zones VI–VIII. From the headwaters to the estuary, two environmental gradients significantly influenced the longitudinal distribution of the fish species, including the first gradient composed of habitat and physical water parameters and the second gradient composed of chemical water parameters. The high regression coefficient of alpha diversity between eDNA and electrofishing methods as well as the accurate identification of dominant, alien, and biomarker species in each spatial zone indicated that eDNA could characterize fish community attributes at a level similar to that of traditional approaches. Overall, our results demonstrated that eDNA metabarcoding can be used as an effective tool for revealing fish composition and diversity, which is important for using the eDNA technique in aquatic field monitoring.

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Dynamics of dissolved greenhouse gas response to seasonal water mixing in subtropical reservoirs

Yang

Tang

et al. 2019

Environ Monit Assess

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Application of mass-balance modelling to assess the effects of ecological restoration on energy flows in a subtropical reservoir, China

Cited by 13 publications

References 38 publications

Evaluation of environmental factors and microbial community structure in an important drinking-water reservoir across seasons

Evaluation of environmental factors and microbial community structure in an important drinking-water reservoir across seasons

Application of environmental DNA metabarcoding to identify fish community characteristics in subtropical river systems

Dynamics of dissolved greenhouse gas response to seasonal water mixing in subtropical reservoirs

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