Fenced cultivation of water hyacinth for cyanobacterial bloom control

Qin, Hongjie; Zhang, Zhiyong; Liu, Haiqin; Li, Dunhai; Wen, Xuezheng; Zhang, Yingying; Shen, Yan

doi:10.1007/s11356-016-6799-6

Cited by 18 publications

(7 citation statements)

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“…At present, more than 70% of the major lakes in China have undergone severe eutrophication (Jin et al, 2005; Yu et al, 2018). For these reasons, there is increased demand for certain aquatic alien plant for water purification in China, such as E. crassipes , P. stratiotes , M. aquaticum , A. philoxeroides , T. dealbata , S. alterniflora , which all have excellent phytoremediation properties, with a high nutrient removal ability and allelopathic inhibition of harmful algae (Zuo et al, 2012; Qin et al, 2016a); consequently, water transparency and the control of cyanobacterial blooms could increase.…”

Section: Eutrophication Promotes the Applicability And Invasion Risksmentioning

confidence: 99%

“…in China, further benefiting the spread and diffusion of aquatic alien plants (Wang et al, 2016). For example, the water hyacinth, Eichhornia crassipes , a free-floating aquatic macrophyte native to South America, was initially introduced into China for its ornament value (Qin et al, 2016a), and it also has water purifying properties in many large freshwater bodies of China (Wang et al, 2012, 2013; Liu et al, 2015). However, due to the booming economy and industrial development of China, high amounts of nutrients have been largely deposited into freshwater, accelerating eutrophication (Ding et al, 2008) and facilitating E. crassipes growth, which has made this plant the most important aquatic invasive plant in South China (Ding et al, 2006; You et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Global Change Sharpens the Double-Edged Sword Effect of Aquatic Alien Plants in China and Beyond

Ding

2019

Front. Plant Sci.

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Many alien aquatic plants are deliberately introduced because they have economic, ornamental, or environmental values; however, they may also negatively affect aquatic ecosystems, by blocking rivers, restricting aquatic animals and plants by decreasing dissolved oxygen, and reducing native biodiversity. These positive and/or negative ecological effects may be enhanced under global change. Here, we examine the impacts of global change on aquatic alien plant introduction and/or invasions by reviewing their introduction pathways, distributions, and ecological effects. We focus on how climate change, aquatic environmental pollution, and China’s rapid economic growth in recent decades affect their uses and invasiveness in China. Among 55 species of alien aquatic plants in China, 10 species are invasive, such as Eichhornia crassipes , Alternanthera philoxeroides , and Pistia stratiotes . Most of these invaders were intentionally introduced and dispersed across the country but are now widely distributed and invasive. Under climate warming, many species have expanded their distributions to areas where it was originally too cold for their survival. Thus, these species are (and will be) considered to be beneficial plants in aquaculture and for the restoration of aquatic ecosystems (for water purification) across larger areas. However, for potential invasive species, climate warming is (and will be) increasing their invasion risk in more areas. In addition, nitrogen deposition and phosphorus inputs may also alter the status of some alien species. Furthermore, climate warming has shifted the interactions between alien aquatic plants and herbivores, thus impacting their future spreads. Under climate change, more precipitation in North China and more frequent flooding in South China will increase the uncertainties of ecological effects of alien aquatic plants in these regions. We also predict that, under the continuing booming economy in China, more and more alien aquatic plants will be used for aquatic landscaping and water purification. In conclusion, our study indicates that both human activities under rapid economic growth and climate change can either increase the potential uses of alien aquatic plants or make the aquatic invaders worse in China and other areas in the world. These findings are critical for future risk assessment of aquatic plant introduction and aquatic ecosystem restoration.

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Section: Eutrophication Promotes the Applicability And Invasion Risksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Global Change Sharpens the Double-Edged Sword Effect of Aquatic Alien Plants in China and Beyond

Ding

2019

Front. Plant Sci.

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“…In work from eutrophic lakes in China, windy conditions led to water hyacinth trapping cyanobacteria blooms (Zhang et al, 2019). The effect was also observed when water hyacinth were cultivated in in-lake enclosures (Qin et al, 2016). Based on these observations, water hyacinth growth could potentially concentrate cyanobacterial cells, which could be detrimental to water quality unless cyanobacterial growth or toxin production was lessened.…”

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confidence: 96%

Local-scale impacts of water hyacinth on water quality in a hypereutrophic lake

et al. 2023

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Increased nutrient concentrations have been linked to water quality impairments across the world. In Lake Victoria, the second largest freshwater lake in the world, decades of eutrophication have challenged water quality management and led to conditions with compromising levels of cyanobacteria and cyanotoxins. Our study focuses on Winam Gulf, where a resurgence of water hyacinth has led to renewed challenges with navigation and anoxia, but also may present a local-scale opportunity for water quality improvements. Over the course of 1.5 years, we conducted three, in situ experiments to vary levels of water hyacinth density and determined its effects on lake water nutrient composition, biochemical parameters (chlorophyll a, cyanotoxins), and fecal indicators (fecal coliforms and Escherchia coli). While our study did not show overwhelming improvements in water quality with increasing water hyacinth density, we did find that small-scale removal of water hyacinth led to decreases in coliforms (F1, 11 = 11.14, p < 0.01), E. coli (F1, 11 = 22.95, p < 0.001), and total microcystins (F1, 9 = 3.47, p = 0.095). Throughout the experiment, the majority of samples collected had both E. coli and microcystin concentrations, notably exceeding World Health Organization guidelines for drinking water. Our data suggest that magnitude of scale, as well as season considerations such as rainfall and background level of water hyacinth, will strongly influence the phytoremediation potential of water hyacinth. The data encourages further exploration of remediation potential of native and introduced macrophytes.

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“…When confined growth, mechanized harvesting and utilization have been realized and all these processes are effectively linked, E. crassipes are applied in Lake Dianchi and Lake Taihu (China) on a large scale [13]. Due to the eutrophic water status, E. crassipes always coexits with M. aeruginosa blooms, whether it is artificially confined in special aera of Lake Dianchi (China) or spread naturally in Guadiana River (Spain) [14][15]. Moreover, E. crassipes has a special advantage of being able to grow well in waters full of thick cyanobacterial scum where many other aquatic macrophytes cannot survive [14].…”

mentioning

confidence: 99%

“…Due to the eutrophic water status, E. crassipes always coexits with M. aeruginosa blooms, whether it is artificially confined in special aera of Lake Dianchi (China) or spread naturally in Guadiana River (Spain) [14][15]. Moreover, E. crassipes has a special advantage of being able to grow well in waters full of thick cyanobacterial scum where many other aquatic macrophytes cannot survive [14]. The interactions between E. crassipes and M. aeruginosa is worth paying attention to.…”

mentioning

confidence: 99%

Corresponding Responses of Microcystis aeruginosa to <i>Eichhornia crassipes</i> (Mart.) Solms Stress

Qing¹,

Han²,

Zhang³

et al. 2020

Pol. J. Environ. Stud.

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As global climate changes and water eutrophication are aggravated, cyanobacterial blooms has become a worldwide ecological problem and poses risks to public health [1]. Microcystis aeruginosa may originate from the African continent and has depersed into Asia, Europe and America [2]. Toxic Microcystis aeruginosa is the most primary bloom-forming cyanobacteria in eutrophic freshwaters [3-4]. It produces microcystins that can lead to poisoning, cancer and even death of humans and animals [5]. The Toledo drinking water crisis in USA, the Wuxi drinking water crisis in China and the recreational water risk in Portugal have caused public health concerns [6-8]. Many methods for controlling cyanobacterial blooms have been

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Fenced cultivation of water hyacinth for cyanobacterial bloom control

Cited by 18 publications

References 42 publications

Global Change Sharpens the Double-Edged Sword Effect of Aquatic Alien Plants in China and Beyond

Global Change Sharpens the Double-Edged Sword Effect of Aquatic Alien Plants in China and Beyond

Local-scale impacts of water hyacinth on water quality in a hypereutrophic lake

Corresponding Responses of Microcystis aeruginosa to <i>Eichhornia crassipes</i> (Mart.) Solms Stress

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