Effects of the submerged macrophyte Ceratophyllum demersum L. on restoration of a eutrophic waterbody and its optimal coverage

Dai, Yanran; Jia, Chenrong; Liang, Wei; Hu, Shenghua; Wu, Zhenbin

doi:10.1016/j.ecoleng.2011.12.023

Cited by 74 publications

(30 citation statements)

References 15 publications

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“…Our results suggested that the submerged aquatic plant biomass was negatively influenced by the concentrations of NH 4 + -N and TN in dry and wet seasons. Generally, the response of different submerged aquatic plant species to the water quality parameters is not the same in a lake [51,52]. In Honghu Lake, NH 4 + -N and TN concentrations were dominant water quality variables that limited the growth of Ceratophyllum demersum L. and Myriophyllum verticillatum in dry and wet seasons, respectively.…”

Section: Influencing Factors Of the Growth Of Submerged Aquatic Plantmentioning

confidence: 99%

Exploring the Spatial-Seasonal Dynamics of Water Quality, Submerged Aquatic Plants and Their Influencing Factors in Different Areas of a Lake

Wang

et al. 2017

Water

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Abstract:The degradation of water quality in lakes and its negative effects on freshwater ecosystems have become a serious problem worldwide. Exploring the dynamics in the associated factors is essential for water pollution management and control. GIS interpolation, principal component analysis (PCA) and multivariate statistical techniques were used to identify the main pollution sources in different areas of Honghu Lake. The results indicate that the spatial distribution of the concentrations of total nitrogen (TN), total phosphate (TP), ammonia nitrogen (NH 4 + -N), and permanganate index (COD Mn ) have similar characteristics and that their values gradually increased from south to north during the three seasons in Honghu Lake. The major influencing factors of water quality varied across the different areas and seasons. The relatively high concentrations of TN and TP, which might limit the growth of submerged aquatic plants, were mainly caused by anthropogenic factors. Our work suggests that spatial analyses combined with PCA are useful for investigating the factors that influence water quality and submerged aquatic plant biomass in different areas of a lake. These findings provide sound information for the future water quality management of the lake or even the entire lake basin.Keywords: lake water quality; spatial and seasonal variations; influencing factors; biomass of submerged aquatic plant; different areas of Honghu Lake

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Section: Influencing Factors Of the Growth Of Submerged Aquatic Plantmentioning

confidence: 99%

Exploring the Spatial-Seasonal Dynamics of Water Quality, Submerged Aquatic Plants and Their Influencing Factors in Different Areas of a Lake

Wang

et al. 2017

Water

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“…Firstly, zero water exchange may result in less nitrogen and phosphorus released from the sediment (Carrick et al 1993;Qin et al 2004). Secondly, macrophytes in the PDCS were more efficient in remediating water by immobilizing the sediment, promoting deposition, and restraining sediment resuspension in zero water exchange (Dai et al 2012;Tanner and Headley 2011). Moreover, the biological capacity and activity may be enhanced in zero water exchange, which can increase TN and TP removal efficiencies (Lin et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Effects of flow speed and circulation interval on water quality and zooplankton in a pond–ditch circulation system

Jian

et al. 2015

Environ Sci Pollut Res

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A pond-ditch circulation system (PDCS) shows great promises for ecological restoration of rural contaminated water in southern China. In this study, the optimal flow speed, circulation interval, and their combination for the system were investigated for higher pollutant removal efficiency and lower costs in three separate experiments: I, II, and III, respectively. In each experiment, there are three PDCSs (S1, S2, and S3) with different water circulation speeds or circulation intervals, respectively. The results demonstrated that in experiment I, total nitrogen (TN) removal rates, species numbers, and diversity indexes of zooplankton in S1 with a flow speed of 3.6 L/h were significantly higher than those in S2 (7.2 L/h) and S3 (10.2 L/h), respectively. Similarly, in experiment II, S3 circulating every other 4 h had significantly higher TN reduction rates, species numbers, and diversity indexes than S1 and S2 circulating every other 1 and 2 h, respectively. In experiment III, water qualities in S1 (circulation of 3.6 L/h+interval of 4 h) were better than those in S2 (7.2 L/h+4 h) and S3 (10.2 L/ h+6 h), respectively. Together, circulation at every other 4 h (3.6 L/h) is probably the optimal operating condition for the PDCS in remediating rural contaminated water.

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“…Submerged macrophytes, as the vital primary producers in aquatic ecosystems, play an important role in improving water quality [30][31][32]. However, reduction in the biomass of submerged macrophytes resulting from grass carp feeding can weaken the capability of water purification by plants.…”

Section: Effects On Water Qualitymentioning

confidence: 99%

Assessing the Effects of Grass Carp Excretion and Herbivory of Submerged Macrophytes on Water Quality and Zooplankton Communities

Sun¹,

Ma²,

Wang³

et al. 2017

Pol. J. Environ. Stud.

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Grass carp (Ctenopharyngodon idella) play an important role in the ecological restoration of water bodies, and it is crucial to understand the mechanism behind this. An experiment was performed in tanks consisting of three treatments: 1) without fish (control treatment, CON), 2) with fish unable to feed on submerged macrophytes (excretion treatment, EXCR), and 3) with fish swimming free (herbivory plus excretion treatment, HERB-EXCR). Treatments were conducted with varying macrophytic compositions (Vallisneria natans (Lour.) Hara, Ceratophyllum demersum L., and both species) and carp densities (low, medium, and high: 0.15, 0.30, and 0.45 g·L -1 respectively, in EXCR and HERB-EXCR). Results indicated that in EXCR and HERB-EXCR, water quality was better with a lower density of grass carp. In EXCR, the water quality in tanks with V. natans was worse than in other tanks, and water quality in C. demersum tanks was better under the HERB-EXCR treament. Compared to EXCR, grass carp in HERB-EXCR significantly increased concentrations of NH 4 + -N, NO 2 − -N, and chlorophyll a. The effects on biomasses of protozoa, copepods, and total zooplankton in HERB-EXCR were greater than in the other treatments. Integrated analysis showed that grass carp herbivory on submerged macrophytes could be the central mechanism accounting for the changes in water quality and zooplankton communities.

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Effects of the submerged macrophyte Ceratophyllum demersum L. on restoration of a eutrophic waterbody and its optimal coverage

Cited by 74 publications

References 15 publications

Exploring the Spatial-Seasonal Dynamics of Water Quality, Submerged Aquatic Plants and Their Influencing Factors in Different Areas of a Lake

Exploring the Spatial-Seasonal Dynamics of Water Quality, Submerged Aquatic Plants and Their Influencing Factors in Different Areas of a Lake

Effects of flow speed and circulation interval on water quality and zooplankton in a pond–ditch circulation system

Assessing the Effects of Grass Carp Excretion and Herbivory of Submerged Macrophytes on Water Quality and Zooplankton Communities

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