Manipulation of fish community structure effectively restores submerged aquatic vegetation in a shallow subtropical lake

Guo, Chao; Li, Wei; Li, Shiqi; Mai, Zhan; Zhang, Tanglin; Liu, Jiashou; Hansen, Adam G.; Lin, Li; Cai, Xıngweı; Hicks, Brendan J.

doi:10.1016/j.envpol.2021.118459

Cited by 8 publications

(7 citation statements)

References 55 publications

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“…These four distinct purification zones are separated by sluices, which act as obstacles to fish movement among zones. The main characteristics of the five different zones (MR, PZ, EZ, SZ, and DZ) are shown in Table 1 (Ren, 2021;Guo et al, 2022).…”

Section: Study Areamentioning

confidence: 99%

“…Chlorophyll-α concentration (Chlα; µg/L) was determined using a fluorimeter with methanol extraction of the filtrate (Holm-Hansen and Riemann, 1978). The biomass of aquatic vegetation (BAV; g/m 2 ) was recorded using a grass collection sampler (Guo et al, 2022). Familyspecific zooplankton (NZ; ind./L) and phytoplankton density (NP; ind./L) were estimated following the standard methods described in Dumont (2002) and Paredes and Montecino (2011), respectively.…”

Section: Environmental Variablesmentioning

confidence: 99%

“…Because small-bodied fish were already well established before stocking was initiated, they could have limited the early growth and survival of piscivorous fish, necessitating the need for repeated stocking efforts. In addition, previous studies demonstrated that repeated biomanipulation (such as stocking piscivorous fish or removing benthivorous and zooplanktivorous fishes) was necessary for achieving and maintaining desired effects over the long-term in shallow eutrophic lakes (Søndergaard et al, 2008;Li et al, 2018;Setubal and Riccardi, 2020;Guo et al, 2022).…”

Section: Strategies For Manipulating Fish Community Composition In Ar...mentioning

confidence: 99%

“…Filter-feeding fish can also control undesirable cyanobacterial blooms by grazing phytoplankton directly (Xie and Liu, 2001). Alternatively, an unbalanced fish community can have a negative impact on water quality and lake ecosystem function (Cai, 2017;Guo et al, 2022). For example, the overabundance of herbivorous fish can precipitate submerged macrophyte loss in shallow lakes through over-grazing (Zhen et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Spatial Variation in the Composition and Diversity of Fishes Inhabiting an Artificial Water Supply Lake, Eastern China

Guo

et al. 2022

Front. Ecol. Evol.

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With the intensification of eutrophication, many artificial water supply lakes that act as a biological filter for water diverted from rivers have been built to alleviate water scarcity in Eastern China. In this study, we selected Lake Yanlong, a representative artificial water supply lake in Yancheng City, as our experimental lake to explore how the community composition of fishes changed among different habitat types and assess potential consequences for effective water treatment. From October 2015 to October 2020, we conducted quarterly surveys of fish communities and environmental factors in the Mangshe River (MR; water for lake) compared to four different water treatment zones of Lake Yanlong (PZ, the pretreatment zone with inlet from the MR; EZ, the emergent macrophyte zone; SZ, the submerged macrophyte zone; DZ, the deep purification zone with outlet to urban waterworks). A total of 16,339 individual fish belonging to 11 families and 49 species were collected. Six of the eight dominant species observed across zones were small-bodied fishes. Despite reduced fish species richness, the relative abundance and biomass of fishes tended to be higher in Lake Yanlong relative to the MR. The Shannon-Wiener diversity index, Pielou evenness index, Simpson’s diversity index all decreased from the MR to the DZ in the following sequence: MR < PZ < EZ < SZ < DZ. Analysis of similarities and similarity percentage analysis confirmed that fish communities differed significantly among zones and Coilia ectenes, Carassius auratus, Pseudobrama simony, Hemiculter leucisculus, and Hemiculter bleekeri were the major differentiating species. Mantel’s test and redundancy analysis revealed that water depth, aquatic vegetation coverage, and phytoplankton concentrations were the major factors determining the spatial distribution of fishes when moving from the MR to the DZ of Lake Yanlong. Stocking piscivorous fish can be used as an effective measure to control the abundance of prolific small-bodied fishes in Lake Yanlong. The details backing these findings are important for understanding how the community composition of fishes among habitat types in Lake Yanlong influence water quality, and to develop suitable biomanipulation strategies for the management of fish resources and maintaining proper function of these artificial water supply lakes.

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Section: Study Areamentioning

confidence: 99%

Section: Environmental Variablesmentioning

confidence: 99%

Section: Strategies For Manipulating Fish Community Composition In Ar...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatial Variation in the Composition and Diversity of Fishes Inhabiting an Artificial Water Supply Lake, Eastern China

Guo

et al. 2022

Front. Ecol. Evol.

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“…In many subtropical shallow lakes (e.g., Wuli Lake and Huizhou West Lake in China), the fish community is dominated by benthi-omnivorous fish (e.g., crucian carp and common carp) (Xu et al, 2016;Yu et al, 2021;Guo et al, 2022). Due to the higher temperature, they have higher metabolic and excretion rates, earlier and more frequent reproduction, and smaller sizes than temperate fish species (Teixeira-de Mello et al, 2009;Jeppesen et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Effects of two subtropical piscivorous fish species on sediment disturbance and water quality: Implication for restoration by stocking piscivores

Qian,

He,

et al. 2023

Knowl. Manag. Aquat. Ecosyst.

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Subtropical lakes are often dominated by benthi-omnivorous fish (e.g., crucian carp) that may substantially disturb sediments and thereby increase water turbidity and nutrient concentrations. Piscivores stocking is sometimes used to control these benthi-omnivores in the expectation that they will reduce their adverse effects on the water quality. However, in shallow subtropical lakes the benthic foraging activities of piscivorous fish may also disturb sediments, a topic that has not yet been well elucidated. Here, we conducted a 6-day mesocosm experiment to explore the bioturbation effects of two native subtropical piscivorous fish (i.e., snakehead, Channa argus and mandarin fish, Siniperca chuatsi) in prey fish (crucian carp, Carassius carassius) present and absent scenarios. Our results showed that in mesocosms without prey, both snakehead and mandarin fish greatly increased the concentrations of suspended solids. However, the concentrations of total, organic and inorganic suspended solids were significantly higher in the mesocosms with snakehead than in those with mandarin fish, suggesting that snakehead has higher bioturbation effects than mandarin fish. When crucian carp were present, we found that both snakehead and mandarin fish significantly reduced prey abundance, whereas piscivore stocking did not significantly decrease the suspended solids and nutrient concentrations. Our study revealed differential effects of two subtropical piscivorous fish species on sediment disturbance and water quality, and we suggest that for lake restoration with piscivores stocking, mandarin fish are a better option than snakehead fish as their predation effect was equal but the strength of sediment disturbance by mandarin fish was lower than that of snakehead.

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Effects of combined ecological restoration measures on water quality and underwater light environment of Qingshan Lake, an urban eutrophic lake in China

Lin,

Wu,

Chao

et al. 2024

Ecological Indicators

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Manipulation of fish community structure effectively restores submerged aquatic vegetation in a shallow subtropical lake

Cited by 8 publications

References 55 publications

Spatial Variation in the Composition and Diversity of Fishes Inhabiting an Artificial Water Supply Lake, Eastern China

Spatial Variation in the Composition and Diversity of Fishes Inhabiting an Artificial Water Supply Lake, Eastern China

Effects of two subtropical piscivorous fish species on sediment disturbance and water quality: Implication for restoration by stocking piscivores

Effects of combined ecological restoration measures on water quality and underwater light environment of Qingshan Lake, an urban eutrophic lake in China

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