The integrative effect of periphyton biofilm and tape grass (Vallisneria natans) on internal loading of shallow eutrophic lakes

Yang, Ying; Chen, Wei; Yi, Zhiyong; Pei, Guofeng

doi:10.1007/s11356-017-0623-9

Cited by 22 publications

(6 citation statements)

References 49 publications

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“…Comprehensively, taking in to consideration the cost performance and construction convenience, the AAP was a more favorable material, with longevity over 15 years, for the application in the ecological restoration of shallow eutrophic waters. Due to the structure of plentiful micropores between the microfibers (8.5-9.0 cm per microfiber), the periphyton is provided with adhesive surfaces of 8000 m 2 /m 3 , and results in strong adsorption and absorption.Research concerning periphyton has predominantly focused upon the purifying capacity of periphyton in bioreactors and rivers [23,24], while studies in eutrophic lakes remain rare [25,26]. Taking the periphyton biofilm as an assemblage, there is a need to understand the performance and processes involved with algal-bacterial biofilm-based wastewater treatment projects.…”

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confidence: 99%

“…Research concerning periphyton has predominantly focused upon the purifying capacity of periphyton in bioreactors and rivers [23,24], while studies in eutrophic lakes remain rare [25,26]. Taking the periphyton biofilm as an assemblage, there is a need to understand the performance and processes involved with algal-bacterial biofilm-based wastewater treatment projects.…”

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confidence: 99%

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Reducing the Phytoplankton Biomass to Promote the Growth of Submerged Macrophytes by Introducing Artificial Aquatic Plants in Shallow Eutrophic Waters

Huang

Wang

et al. 2019

Water

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Harmful cyanobacterial blooms frequently occur in shallow eutrophic lakes and usually cause the decline of submerged vegetation. Therefore, artificial aquatic plants (AAPs) were introduced into enclosures in the eutrophic Dianchi Lake to investigate whether or not they could reduce cyanobacterial blooms and promote the growth of submerged macrophytes. On the 60th day after the AAPs were installed, the turbidity, total nitrogen (TN), total phosphorous (TP), and the cell density of phytoplankton (especially cyanobacteria) of the treated enclosures were significantly reduced as compared with the control enclosures. The adsorption and absorption of the subsequently formed periphyton biofilms attached to the AAPs effectively decreased nutrient levels in the water. Moreover, the microbial diversity and structure in the water changed with the development of periphyton biofilms, showing that the dominant planktonic algae shifted from Cyanophyta to Chlorophyta. The biodiversity of both planktonic and attached bacterial communities in the periphyton biofilm also gradually increased with time, and were higher than those of the control enclosures. The transplanted submerged macrophyte (Elodea nuttallii) in treated enclosures recovered effectively and reached 50% coverage in one month while those in the control enclosures failed to grow. The application of AAPs with incubated periphyton presents an environmentally-friendly and effective solution for reducing nutrients and controlling the biomass of phytoplankton, thereby promoting the restoration of submerged macrophytes in shallow eutrophic waters. co-precipitated phosphorus into the sediment [12]. Inorganic compounds in marl have been used to immobilize nutrients on the sediment surface, thus reducing nutrient concentrations in the water [13]. However, the aforementioned methodologies often have some effect on the original aquatic ecosystem, including changes in pH or salinity, which may threaten life in the lake [14]. Other measures have been applied to control the cyanobacterial blooms directly. Algaecides such as organic bromide, copper sulphate, and hydrogen peroxide have mostly been used to control large-scale cyanobacterial bloom as an emergency method, but these may result in an unsafe aquatic ecosystem and easily induce secondary pollution [15].Periphyton is an assemblage of freshwater organisms mainly composed of photoautotrophic algae, heterotrophic, and chemoautotrophic bacteria, fungi, protozoans, metazoans and viruses, which attach to submerged surfaces [16]. Periphyton plays a crucial role in nutrient cycling and in supporting food webs and it has an excellent ability to degrade pollutants in aquatic environments [17]. Previous studies have utilized biofilms to remove nitrogen and phosphorus from wastewater and to biodegrade other hazardous contaminants [18,19]. Moreover, microbial communities are easily incorporated into bioreactors, which result in efficient bioremediation operations [20]. Additionally, the microbial compositions of periphyton are derived fr...

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confidence: 99%

Reducing the Phytoplankton Biomass to Promote the Growth of Submerged Macrophytes by Introducing Artificial Aquatic Plants in Shallow Eutrophic Waters

Huang

Wang

et al. 2019

Water

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“…biofilm had no significant effect on the growth of V. natans , which is similar to the conclusion that the periphyton biofilm is beneficial to the growth of V. natans . [ 64 ] However, Song et al. [ 65 ] showed that the attachment of Leptolyngbya sp.…”

Section: Discussionmentioning

confidence: 99%

Effect of Leptolyngbya sp. Biofilm and Vallisneria natans Growth on Nutrient Release from Sediment

Wang

Xie

Shu

et al. 2021

CLEAN Soil Air Water

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Nutrients supplied by sediment of lakes and light are likely important factors determining the growth balance between Leptolyngbya sp. biofilm and Vallisneria natans. Therefore, experiments with varying light are conducted to compare the effect of nutrient release from surface sediment on their growth. The results show that changes in pH, dissolved oxygen (DO) and redox potential (Eh) are significantly correlated with the changes in nitrogen(N) and phosphorus (P) concentrations in the water (p < 0.05). The optimum light intensity for the growth of Leptolyngbya sp. and V. natans is different. The biomass of Leptolyngbya sp. biofilm is higher at 2–27 µmol m−2·s−1, but the biomass of V. natans is positively correlated with light intensity (2–54 µmol m−2·s−1) (p < 0.05). The Leptolyngbya sp. biofilm and V. natans can retain P from sediment and significantly remove N in the overlying water. The total P amounts retained by V. natans are significantly higher than that of Leptolyngbya sp. biofilm in all treatments, and the potential for P retention of V. natans increases with the increase of light intensity. The retention of P amounts in the Leptolyngbya sp. biofilm mainly formed 47.8% Fe‐bound P, but 57% NH4CI‐bound P in the V. natans.

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“…Sediment pH and Eh were measured in situ using a portable pH meter (PHB-4; Leici, Shanghai, China) and an Eh meter (SX712; Ruisun, Chengdu, China), respectively [9]. Organic matter (OM) content in sediments was determined based on wet combustion with K 2 Cr 2 O 7 , and measured through titration with (NH 4 ) 2 Fe(SO 4 ) 2 •6H 2 O [22].…”

Section: Sediment Physicochemical Analysismentioning

confidence: 99%

“…Submerged macrophytes are distributed extensively in freshwater environments and can be obtained relatively easily; consequently, they represent ideal natural materials for controlling internal P loading from sediments. In addition, the efficiency of submerged macrophytes in controlling internal P loading may be enhanced by integration with in situ P passivation [8,9].…”

Section: Introductionmentioning

confidence: 99%

Interactions of Vallisneria natans and Iron-Oxidizing Bacteria Enhance Iron-Bound Phosphorus Formation in Eutrophic Lake Sediments

et al. 2022

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Submerged macrophyte restoration and in situ phosphorus (P) passivation are effective methods for the control of internal P loading from sediments. This study explored the synergistic effects of Vallisneria natans and iron (Fe)-oxidizing bacteria (IOB) on internal P loading from eutrophic freshwater lake sediments by taking into account Fe-bound P (FeP) formation and associated bacterial community structures. Sediment samples were prepared in glass tanks under four treatments, namely no V. natans planting or IOB inoculation (control), planting V. natans without IOB inoculation (Va), planting V. natans with IOB inoculation (Va-IOB), and planting V. natans with autoclaved IOB inoculation (Va-IOB[A]). Compared with the control, all three treatments with V. natans (Va, Va-IOB, and Va-IOB[A]) had significantly decreased organic matter contents and increased redox potential in sediments (p < 0.05), at the rapid growth and mature stages of V. natans. Planting V. natans with and without IOB inoculation also decreased the total P (TP) and Fe–P concentrations in sediments. Conversely, Fe3+ concentrations, Fe3+/Fe2+ ratios, and the proportions of Fe–P in TP all increased in sediments planted with V. natans, especially under the Va-IOB treatment (p < 0.05). Furthermore, bacterial community diversity increased in sediments due to the presence of V. natans. The relative abundances of IOB (including Acidovorax and Chlorobium) increased from the transplanting to the rapid growth stage of V. natans and then decreased afterwards. In the later stages, the relative abundances of IOB and their ratios to Fe-reducing bacteria were the highest under the Va-IOB treatment. Accordingly, synergistic interactions between V. natans and IOB could enhance Fe–P formation and reduce TP concentrations in eutrophic lake sediments by altering sediment physicochemical properties and Fe oxidation-related bacterial community structures.

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The integrative effect of periphyton biofilm and tape grass (Vallisneria natans) on internal loading of shallow eutrophic lakes

Cited by 22 publications

References 49 publications

Reducing the Phytoplankton Biomass to Promote the Growth of Submerged Macrophytes by Introducing Artificial Aquatic Plants in Shallow Eutrophic Waters

Reducing the Phytoplankton Biomass to Promote the Growth of Submerged Macrophytes by Introducing Artificial Aquatic Plants in Shallow Eutrophic Waters

Effect of Leptolyngbya sp. Biofilm and Vallisneria natans Growth on Nutrient Release from Sediment

Interactions of Vallisneria natans and Iron-Oxidizing Bacteria Enhance Iron-Bound Phosphorus Formation in Eutrophic Lake Sediments

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