Contamination, risk and quantitative identification of nutrients and potentially toxic elements in the surface sediments of Baiyangdian Lake, North China

Wang, Qianqian; Wei, Hao; Zhao, Liang; Zhan, Shuie; Jia, Hongjuan; Guo, Shuai; Ge, Peixun

doi:10.1007/s10646-021-02517-z

Cited by 10 publications

(6 citation statements)

References 42 publications

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“…And, there is no obvious difference in total phosphorus content. Compared with the highly contaminated situation (value of TN and TP contents were approximately 4,000 and 800 mg/kg) of Baiyangdian in 2018 reported in January this year ( Wang et al, 2022 ), TN and TP have dropped to around 2,400 and 515 mg/kg, respectively now because of somewhat significant results that the government has achieved in pollution control in recent years. But it is still under eutrophication threat.…”

Section: Discussionmentioning

confidence: 81%

Metagenomics reveals biogeochemical processes carried out by sediment microbial communities in a shallow eutrophic freshwater lake

Kuang

Xiao

et al. 2023

Front. Microbiol.

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IntroductionAs the largest shallow freshwater lake in the North China Plain, Baiyangdian lake is essential for maintaining ecosystem functioning in this highly populated region. Sediments are considered to record the impacts of human activities.MethodsThe abundance, diversity and metabolic pathways of microbial communities in sediments were studied by metagenomic approach to reveal patterns and mechanism of C, N, P and S cycling under the threat of lake eutrophication.ResultsMany genera, with plural genes encoding key enzymes involved in genes, belonging to Proteobacteria and Actinobacteria which were the most main phylum in bacterial community of Baiyangdian sediment were involved in C, N, S, P cycling processes, such as Nocardioides (Actinobacteria), Thiobacillus, Nitrosomonas, Rhodoplanes and Sulfuricaulis (Proteobacteria).For instance, the abundance of Nocardioides were positively correlated to TN, EC, SOC and N/P ratio in pathways of phytase, regulation of phosphate starvation, dissimilatory sulfate reduction and oxidation, assimilatory sulfate reduction, assimilatory nitrate reduction and reductive tricarboxylic acid (rTCA) cycle. Many key genes in C, N, P, S cycling were closely related to the reductive citrate cycle. A complete while weaker sulfur cycle between SO42− and HS− might occur in Baiyangdian lake sediments compared to C fixation and N cycling. In addition, dissimilatory nitrate reduction to ammonia was determined to co-occur with denitrification. Methanogenesis was the main pathway of methane metabolism and the reductive citrate cycle was accounted for the highest proportion of C fixation processes. The abundance of pathways of assimilatory nitrate reduction, denitrification and dissimilatory nitrate reduction of nitrogen cycling in sediments with higher TN content was higher than those with lower TN content. Besides, Nocardioides with plural genes encoding key enzymes involved in nasAB and nirBD gene were involved in these pathways.DiscussionNocardioides involved in the processes of assimilatory nitrate reduction, denitrification and dissimilatory nitrate reduction of nitrogen cycling may have important effects on nitrogen transformation.

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Section: Discussionmentioning

confidence: 81%

Metagenomics reveals biogeochemical processes carried out by sediment microbial communities in a shallow eutrophic freshwater lake

Kuang

Xiao

et al. 2023

Front. Microbiol.

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“…The low pollution level of Cr and its weak migration ability may be attributed to the emissions of parent lake materials [44]. Sediment accumulation mainly occurred in the center of Wanghu Lake and showed a decreasing outward trend, which was related to the low migration and transformation ability of As [5]. In addition, the migration and transformation of HMs are closely related to their chemical forms, environmental pH, redox conditions, and the presence of OM and microorganisms [45].…”

Section: The Source Of Nutrients and Heavy Metals In Sedimentsmentioning

confidence: 99%

“…Atmospheric deposition affected the production and enrichment of Ni and As. Agricultural irrigation water, rock weathering, and decay of animal and plant residues also affect the Ni content of sediments, whereas As may be produced by the application of arsenic-containing pesticides, residues, and coal burning [5].…”

Section: The Source Of Nutrients and Heavy Metals In Sedimentsmentioning

confidence: 99%

“…The content of TP was higher than that of other lakes while it was lower than that of Ulansuhai Nur in the northern region and Qingshan Lake in the same area [1,52]. The OM content was also at a high level, only lower than that of the plateau lake Yilong Lake, urban lake Qingshan Lake, and Dongping Lake [51,53], and the difference between the content of Baiyangdian was small [5]. Therefore, compared to other lakes in China, the nutrients and OM in Wanghu Lake were relatively high.…”

Section: Comparison Of Pollution In Surface Sediments Of Different Areasmentioning

confidence: 99%

“…Sediments receive sands and pollution inflow from atmospheric deposition, surface runoff, and soil erosion in the basin, thus sediment is the "sink" of lake pollution [3]. Nevertheless, when the environmental conditions (temperature, dissolved oxygen (DO), and pH) change, nutrients and organic matter (OM) in sediments are released into overlying water by the ways of decomposition, diffusion, and resuspension, causing secondary pollution [4,5]. Heavy metals (HMs) can also be released into the overlying water through interstitial water by changing the speciation of heavy metals, dissolution, and concentration diffusion [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Distribution and Pollution Evaluation of Nutrients, Organic Matter and Heavy Metals in Surface Sediments of Wanghu Lake in the Middle Reaches of the Yangtze River, China

Gao,

Lin,

et al. 2023

Sustainability

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Nutrients, organic matter (OM), and heavy metals (HMs) in lake sediments are critical elements contributing to water pollution. In April 2019, surface sediments from Wanghu Lake were collected, and the nutrient, organic matter, and heavy metal content of the sediments were determined. We mainly evaluated the sediment pollutants through four evaluation methods to assess pollution and provide a reference for pollution control in Wanghu Lake. The results indicated that the averages of total phosphorus (TP) and total nitrogen (TN) were (1045.74 ± 190.17) mg/kg, (945.27 ± 203.56) mg/kg; most of them showed serious pollution and moderate pollution, respectively. OM was (32.31 ± 5.11) g/kg. Among them, TP and OM in the northwestern Wanghu Lake were significantly higher than those in the eastern lake (p < 0.05). It shows that nutrients are greatly affected by historical aquaculture and urban human activities. TP was the most serious in the center of the lake, and the source of pollution was mainly the historical deposition. The average of Cd, Cr, Cu, Ni, Pb, Zn, Hg, and As in the sediments were 2.15, 1.09, 1.93, 1.37, 1.28, 1.49, 2.60, 1.77 times that of the soil background values of Hubei Province, respectively. Hg and Cd were the main factors contributing to the surface sediments, with levels at considerable and moderate risks, respectively.

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A bacteria-based index of biotic integrity indicates aquatic ecosystem restoration

Liu,

Yin,

2024

Environmental Science and Ecotechnology

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Contamination, risk and quantitative identification of nutrients and potentially toxic elements in the surface sediments of Baiyangdian Lake, North China

Cited by 10 publications

References 42 publications

Metagenomics reveals biogeochemical processes carried out by sediment microbial communities in a shallow eutrophic freshwater lake

Metagenomics reveals biogeochemical processes carried out by sediment microbial communities in a shallow eutrophic freshwater lake

Distribution and Pollution Evaluation of Nutrients, Organic Matter and Heavy Metals in Surface Sediments of Wanghu Lake in the Middle Reaches of the Yangtze River, China

A bacteria-based index of biotic integrity indicates aquatic ecosystem restoration

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