Effects of Aquaculture on Lakes in the Central Yangtze River Basin, China, I. Water Quality

Wang, Rui; Zhang, Yingxue; Xia, Wentong; Xiao, Qiong; Wei, Xiaoyang; Guo, Chuanbo; Bowker, Jim; Chen, Yushun

doi:10.1002/naaq.10038

Cited by 22 publications

(12 citation statements)

References 48 publications

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“…In our study lakes, the water was alkaline, with mean pH values ranging from 7.95 to 8.87 (Wang et al. ). Heavy metals are easily mobilized under acidic conditions (Navarro et al.…”

Section: Discussionmentioning

confidence: 79%

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Effects of Aquaculture on Lakes in the Central Yangtze River Basin, China, III: Heavy Metals

et al. 2018

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Fish culture in lakes is an important component of aquaculture in some countries, but little is known about its impact on the ecosystem of the impacted lake. In summer 2015, we measured concentrations of 11 heavy metals, including copper (Cu), zinc (Zn), lead (Pb), arsenic (As), and manganese (Mn), in water and sediment from 23 lakes of different aquaculture classifications in the middle reach of the Yangtze River basin, China. These lakes represented the following four lake aquaculture management strategies: fish ranching in lakes classified as receiving low (LOW; used for backup drinking water and irrigation), medium (MEDIUM), or high (HIGH; fish fed commercial feed) stocking rates or as fallow (FALLOW), in which previously ranched HIGH lakes had not been stocked for 2 years. Results showed a positive relationship between most heavy metal concentrations and fish culture intensity. Concentrations of Cu, Zn, and aluminum (Al) in the water column were significantly greater in the HIGH lakes than in the LOW lakes. Heavy metals in the FALLOW lakes did not appear to fully recover from past aquaculture activities. In sediment, the concentration of As in LOW lakes was significantly lower than those in MEDIUM and HIGH lakes, whereas no among‐group significant differences in the other heavy metal concentrations were detected. Metals in sediments of all four lake types were at the low ecological risk level. We speculate that these results may be applied to lakes in other regions globally with similar fish stocking and management strategies.

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“…In our study lakes, the water was alkaline, with mean pH values ranging from 7.95 to 8.87 (Wang et al. ). Heavy metals are easily mobilized under acidic conditions (Navarro et al.…”

Section: Discussionmentioning

confidence: 79%

“…Among those physicochemical properties, water pH was found to play the most important role in metal speciation, movement, and bioavailability. In our study lakes, the water was alkaline, with mean pH values ranging from 7.95 to 8.87 (Wang et al 2018). Heavy metals are easily mobilized under acidic conditions (Navarro et al 2008).…”

Section: Heavy Metals In Watermentioning

confidence: 85%

Effects of Aquaculture on Lakes in the Central Yangtze River Basin, China, III: Heavy Metals

et al. 2018

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“…Our study lakes (MEDIUM, HIGH, and FALLOW lakes) were eutrophic (based on water quality analysis; Wang et al. ). The sediment of lakes in this region mainly comprises silty and clay particles (mean size = 16 μm; Meng et al.…”

Section: Discussionmentioning

confidence: 99%

“…At each sampling station, water samples were taken at 0.5 m below the surface and were kept in a cooler for laboratory analyses within 24 h. Water quality variables (e.g., turbidity, total suspended solids, chemical oxygen demand, total alkalinity, total hardness, chloride, total nitrogen, nitrate, ammonia, total phosphorus, and phosphate) were measured in accordance with standard methods (APHA et al 2005). Water quality analysis details were presented by Wang et al (2018).…”

Section: Methodsmentioning

confidence: 99%

“…Wolfram (1996) also found that Tanypus punctipennis largely appeared in sediment that was rich in organic matter. Our study lakes (MEDIUM, HIGH, and FALLOW lakes) were eutrophic (based on water quality analysis; Wang et al 2018). The sediment of lakes in this region mainly comprises silty and clay particles (mean size = 16 μm; Meng et al 2004;Shi and Qing 2009).…”

Section: Dominant Taxamentioning

confidence: 96%

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Effects of Aquaculture on Lakes in the Central Yangtze River Basin, China,II: Benthic Macroinvertebrates

et al. 2018

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There is limited information available on the effects of extensive aquaculture or “fish ranching” operations on lake ecosystems. To study the effects of aquaculture on lake ecosystems, benthic macroinvertebrate communities were investigated from July to September 2015 in 23 lakes within the middle reach of the Yangtze River basin. The lakes represented four lake management strategies: fish ranching supported by low (LOW), medium (MEDIUM), or high (HIGH) stocking rates; or fallowing (FALLOW) in which previously ranched HIGH lakes had not been stocked for 2 years. Total macroinvertebrate densities did not vary significantly but were highest in the FALLOW lakes (2,352 individuals/m2), lowest in the LOW lakes (544 individuals/m2), and intermediate in the HIGH (1,734 individuals/m2) and MEDIUM lakes (1,208 individuals/m2). Chironomid densities were significantly lower in LOW lakes compared to all others, and mollusks were not observed in LOW lakes. Chironomid and total macroinvertebrate biomasses were also significantly lower in LOW lakes than in the other lakes. The FALLOW lakes had significantly greater biomasses of mollusks, oligochaetes, and total macroinvertebrates than all other lakes. Two pollution‐tolerant taxa, Tubificidae and Chironomidae, were dominant in all lakes regardless of management strategy, indicating that all study lakes were experiencing some degree of eutrophication. Results indicated that fish ranching does not affect macroinvertebrate communities in a predictable manner based on stocking density, but allowing for a fallowing period could potentially benefit lake macroinvertebrates. Canonical correspondence analysis indicated that chlorophyll a, chloride, conductivity, and total nitrogen were affecting macroinvertebrate density in these lakes, while total suspended solids, alkalinity, turbidity, total hardness, and water depth affected macroinvertebrate biomass.

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The Effects of Shaking Duration on the Abundance and the Community of Aerobic Denitrifying Bacteria in Shrimp Pond Water and Sediment Samples

et al. 2023

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Effects of Aquaculture on Lakes in the Central Yangtze River Basin, China, I. Water Quality

Cited by 22 publications

References 48 publications

Effects of Aquaculture on Lakes in the Central Yangtze River Basin, China, III: Heavy Metals

Effects of Aquaculture on Lakes in the Central Yangtze River Basin, China, III: Heavy Metals

Effects of Aquaculture on Lakes in the Central Yangtze River Basin, China,II: Benthic Macroinvertebrates

The Effects of Shaking Duration on the Abundance and the Community of Aerobic Denitrifying Bacteria in Shrimp Pond Water and Sediment Samples

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