Improvement of water quality by sediment capping and re-vegetation with Vallisneria natans L.: A short-term investigation using an in situ enclosure experiment in Lake Erhai, China

Zhu, Tianshun; Cao, Ting; Ni, Leyi; Ni, Liang; He, Liwen; Chen, Yi; Yuan, Chao; Xie, Ping

doi:10.1016/j.ecoleng.2015.10.031

Cited by 35 publications

(9 citation statements)

References 36 publications

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“…We also found that WT was negatively correlated with Planktothrix and Microcystis, indicating that their excessive growth may lower WT and inhibit the growth of other bacterioplankton. M. spicatum and C. demersum improved WT to some extent; however, since submerged plants need a certain time to grow, their effect on WT was not significant, implying that single submerged macrophytes only slowly improve water quality slightly [36]. It has been shown that Rhodobacter and Novosphingobium were negatively correlated with TN and TP, which is because Rhodobacter is an aerobic denitrifier that can degrade TN in water [37], while Novosphingobium can degrade TP in water and possesses an algicidal effect [38].…”

Section: Relationships Between Environmental Factors and Bacterioplan...mentioning

confidence: 91%

D. magna in Combination with M. aquaticum Inhibited the Bacterioplankton in Eutrophic Water

et al. 2020

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D. magna can affect the composition of planktonic bacteria, and can also significantly inhibit the growth of Cyanobacteria at high density. In this study, the inhibitory effects of low-density D. magna groups were stronger than high-density groups due to increases in Acidobacteria abundance in water. Meanwhile, D. magna can inhibit the growth of Planktothrix and Microcystis, but especially the growth of the latter. Alternatively, M. aquaticum and C. demersum can change the community structure of planktonic bacteria. Among them, the inhibitory effect of M. aquaticum on Microcystis and Planktothrix is strong, but it also increases the relative abundance of Chlamydia in water and the risk of pathogenic bacteria. In contrast, the inhibitory effect of C. demersum was more significant on Microcystis than on Planktothrix. Therefore, the combination of “submerged plants-Daphnia”, especially the combination of low density D. magna with M. aquaticum, had a significant inhibitory effect on Planktothrix and Microcystis.

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Section: Relationships Between Environmental Factors and Bacterioplan...mentioning

confidence: 91%

D. magna in Combination with M. aquaticum Inhibited the Bacterioplankton in Eutrophic Water

et al. 2020

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“…The enclosures were placed 25 m off the north shore at a water depth of 1.5 m and the experimental period was June 11-July 23, 2013. The tops and bottoms of the enclosures were open to maintain light intensity and free exchange of nutrients [ 32 ]. The lower end of the enclosure frames were fixed with rocks and buried to a depth of 20 cm in the sediment and the frame tops extended 30 cm above the water surface.…”

Section: Methodsmentioning

confidence: 99%

“…The lower end of the enclosure frames were fixed with rocks and buried to a depth of 20 cm in the sediment and the frame tops extended 30 cm above the water surface. Prior to treatment, the PVC sheeting was pulled down near, but not touching, the sediment for 5 days [ 32 ] to allow the water quality and plankton community to stabilize. After stabilization, the PVC was fastened to the steel tube frame, creating an enclosure volume of ~13.5 m 3 .…”

Section: Methodsmentioning

confidence: 99%

“…Before collecting samples, water temperature (WT, ℃), dissolved oxygen (DO, mg/L) and pH were measured in situ using a multifunctional YSI meter (YSI-650, YSI Inc., Yellow Springs, OH). Samples for total nitrogen (TN, mg/L), total phosphorus (TP, mg/L) and Chlorophyll a (Chl-a, mg/L) were collected from each enclosure by the method described by Zhu et al [ 32 ]. Water samples were immediately placed on ice and taken to the laboratory for analysis using standard methods (Environmental Quality Standards for Surface Water, GB3838-2002).…”

Section: Methodsmentioning

confidence: 99%

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Use of fish species from different trophic levels to control algae and water quality: An enclosure experiment in eutrophic area of Xiaojiang River

Yang

Pan

et al. 2017

PLoS ONE

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The effects of stocking both filter-feeding fish and piscivorous fish were compared to the effects of stocking only filter-feeding fish for suppressing algal blooms and improving water quality in the impoundment area of Xiaojiang River where catfish were dominant. Using only filter-feeding fish for algal suppression and water quality control was more effective in the short-term, but use of both filter-feeding fish and piscivorous fish was better in the long-term. Obvious suppression of phytoplankton biomass (PB) only occurred during the first 14 days regardless of the fish stocked. Adding fish to the enclosure clearly alters phytoplankton community structure and introducing piscivorous fish to an enclosure stocked with filter-feeding fish changed the relative densities of dominant algae species. While stocking filter-feeding fish decreased total nitrogen concentration by removing phytoplankton, it did not effectively decrease total phosphorus and Chlorophyll a concentrations. Introducing piscivorous fish to the enclosure weakened the relationship between nutrients and phytoplankton. Results indicate that stocking only filter-feeding fish to improve water quality and suppress phytoplankton in an impoundment area is insufficient and other technologies and means should be applied simultaneously.

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“…However, dredging effects varying by season and high cost, and increasing the risk of spreading contaminants made it more strictly apply this method [9,10]. On the contrary, there are many in-situ approaches employed in sediment treatment such as sediment capping [3,11], phytoremediation [12,13], and chemical reagents [14,15]. Among these, sediment capping is an effective and low-cost way that places adsorption materials over sediment.…”

mentioning

confidence: 99%

Adsorption Performance on Sediment Nutrients by Different Proportions of Zeolite and Shale Ceramsite (ZSC)

Sun¹,

Yang²,

Zeng³

et al. 2020

Pol. J. Environ. Stud.

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Improvement of water quality by sediment capping and re-vegetation with Vallisneria natans L.: A short-term investigation using an in situ enclosure experiment in Lake Erhai, China

Cited by 35 publications

References 36 publications

D. magna in Combination with M. aquaticum Inhibited the Bacterioplankton in Eutrophic Water

D. magna in Combination with M. aquaticum Inhibited the Bacterioplankton in Eutrophic Water

Use of fish species from different trophic levels to control algae and water quality: An enclosure experiment in eutrophic area of Xiaojiang River

Adsorption Performance on Sediment Nutrients by Different Proportions of Zeolite and Shale Ceramsite (ZSC)

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