Effects of accumulated cyanobacterial bloom biomass contents on the characteristics of surface fluid sediments in a eutrophic shallow lake

Wang, Chunliu; Da, Xu; Bai, Leilei; Zhu, Bosong; Huang, Lei; Jiang, Haipeng

doi:10.1016/j.jenvman.2022.114644

Cited by 9 publications

(5 citation statements)

References 45 publications

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“…Eutrophication is one of the main ecological and environmental issues facing freshwater lakes worldwide. In China, around 85.4% of the 138 major freshwater lakes with areas greater than 10 km 2 have varying degrees of eutrophication problems [1]. In many hyper eutrophic shallow lakes of China, a dramatic increase in the content of olfactory substances in the water column, represented by dimethyl sulfide substances, has led to a rapid deterioration in the water quality and caused serious environmental consequences [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Three Dimethyl Sulfides in Freshwater Lakes Using Headspace Solid-Phase Microextraction-Gas Chromatography with Flame Photometric Detection

Bao,

Wu,

et al. 2024

Atmosphere

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Dimethyl sulfides are ubiquitous odorous substances in eutrophic freshwater bodies. In this study, a simple headspace solid-phase microextraction-gas chromatography-flame photometric detection method was developed to detect three representative algal-derived dimethyl sulfides in freshwater lake water samples: dimethyl monosulfide (DMS), dimethyl disulfide (DMDS), and dimethyl trisulfide (DMTS). The effects of extraction fiber, temperature, pH, ionic strength, and sample volume were investigated orthogonally, and the optimized method was applied to analyze surface water samples from Lake Ulansuhai in Inner Mongolia, China. Optimal extraction was obtained with a 50/30 µm DVB/CAR/PDMS extraction fiber, 20% ion concentration, 87 min extraction time, and 50 °C extraction temperature. The correlation coefficients of the standardized working curves for DMS, DMDS, and DMTS were 0.9967, 0.9907, and 0.9994, respectively, indicating good linear relationships. Limits of detection were in the nanogram range, and the recoveries of the spiked standards for DMS, DMDS, and DMTS were 97.22~99.07%, 93.39~99.34%, and 91.17~99.25%, with relative standard deviations of 5.18~5.94%, 3.08~6.25%, and 2.56~5.47%, respectively. This method is stable and reliable, and can be used for the determination of volatile sulfides in freshwater lake water.

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Section: Introductionmentioning

confidence: 99%

Analysis of Three Dimethyl Sulfides in Freshwater Lakes Using Headspace Solid-Phase Microextraction-Gas Chromatography with Flame Photometric Detection

Bao,

Wu,

et al. 2024

Atmosphere

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“…In recent years, the problem of eutrophication in shallow lakes has become increasingly serious, and frequent outbreaks of cyanobacterial blooms are more frequent [1][2][3][4]. Outbreaks of cyanobacterial blooms not only cause water quality deterioration but also produce algal toxins that pose serious health risks to aquatic organisms and humans [5,6].…”

Section: Introductionmentioning

confidence: 99%

Differences in Growth Trends of <i>Microcystis aeruginosa</i> in Light and Dark Environments under High Frequency Monitoring

Song,

Xu,

Zhou

et al. 2024

Pol. J. Environ. Stud.

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Despite the phased success of cyanobacterial bloom management in eutrophic shallow lakes worldwide, cyanobacterial bloom outbreaks are still frequent. Currently, the kinetic mechanism of cyanobacterial growth is still unclear, and the frequency of data in most studies is measured in days or months, which has difficulties revealing the real growth state of cyanobacteria. Therefore, it is important to explore the growth pattern of cyanobacteria in the perspective of high frequency data for the prevention and control of cyanobacterial blooms. In this study, an indoor high-frequency monitoring experiment was designed to systematically analyze the growth kinetics of Microcystis aeruginosa (M. aeruginosa), a typical dominant cyanobacterial species, with monitoring data frequency up to 15 min/time. High-frequency monitoring experiments found that the chlorophyll-a (chla) concentration of M. aeruginosa in light and dark environments had obvious differences, which were summarized and divided into Light adaptation period (LAP), Logarithmic growth period (LGP) and Stabilization period (SP). In LAP (0-20 days), the chlorophyll-a (chla) concentration of M. aeruginosa in the dark environment was higher than in the light environment. In LGP (20-45 days), M. aeruginosa showed logarithmic growth and chla concentrations in the light environment exceeded those in the dark environment. In SP (45-80 days), the chla concentrations in light and dark environments were almost the same, and the population of M. aeruginosa stopped growing and reached the limit of population density (k). It was verified that the three stages of growth of M. aeruginosa found in this study coincided with the Logistic growth and reflected its rationality. In addition, the three stages were found in the context of high-frequency data, reflecting both the growth pattern of the algae in light and dark environments and the maximum instantaneous growth rate (2/k) and growth extremes of M. aeruginosa. This finding can help reveal the periodic growth characteristics and patterns of cyanobacteria in more detail

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“…The cyanobacterial bloom biomass (CBB) can settle to the bottom of the lake and be rapidly degraded, ascribing to a high content of starch, lipids, and proteins without recalcitrant lignin . Recently, low-density sediment has appeared in eutrophic lakes with serious cyanobacterial bloom and is named biological fluid sediment. ,, …”

Section: Introductionmentioning

confidence: 99%

“…Unlike the fluid sediment formed through hydrodynamic erosion and sediment bed oscillation, the biological fluid sediment was formed accompanied by rapid anaerobic degradation of organic matter. , With the rapid degradation of CBB, gases such as carbon dioxide (CO 2 ) and methane (CH 4 ) were produced during a short period . It was known that CO 2 and CH 4 are the dominant gaseous end-products of the remineralization of organic C as well as the two greatest contributors to the anthropogenic greenhouse effect .…”

Section: Introductionmentioning

confidence: 99%

“…11 Recently, low-density sediment has appeared in eutrophic lakes with serious cyanobacterial bloom and is named biological fluid sediment. 3,12,13 Unlike the fluid sediment formed through hydrodynamic erosion and sediment bed oscillation, 6 the biological fluid sediment was formed accompanied by rapid anaerobic degradation of organic matter. 12,13 With the rapid degradation of CBB, gases such as carbon dioxide (CO 2 ) and methane (CH 4 ) were produced during a short period.…”

Section: ■ Introductionmentioning

confidence: 99%

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Important Role of Biogas and Secretions in the Formation of Biological Fluid Sediment under Cyanobacterial Bloom Biomass Degradation

Wang

Bai

et al. 2023

ACS EST Water

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In eutrophic shallow lakes, cyanobacterial blooms will occur frequently and then accumulate on sediments, leading to the formation of biological fluid sediment. In this study, the formation process of biological fluid sediment was investigated in microcosm experiments by monitoring the variations in gas, sediment physicochemical properties, and microorganisms during 30 days. It was found that variations in sediment height reached the maximum value on day 8 (0.53 cm) with the minimum sediment density (1.04 g cm–3). Meanwhile, the amount of carbon dioxide (CO2) produced through fermentation was larger than methane (CH4) during the initial 4 days. Then, the amount of CH4 drastically increased, resulting in the release of gas from sediments. In addition, a high amount of extracellular polymer substances (EPSs) was produced and led to sediment particle agglomeration, which benefited in maintaining the structure of biological fluid sediment. Through the microbial community analysis, it was found that the strong symbiotic structure of the microbial community in the early stage provided favorable conditions for the formation of CH4 in sediments. The results of this study can clarify the formation mechanism of biological fluid sediment and provide help for understanding the effect of biogas and secretions on the sediment properties in shallow lakes.

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Effects of accumulated cyanobacterial bloom biomass contents on the characteristics of surface fluid sediments in a eutrophic shallow lake

Cited by 9 publications

References 45 publications

Analysis of Three Dimethyl Sulfides in Freshwater Lakes Using Headspace Solid-Phase Microextraction-Gas Chromatography with Flame Photometric Detection

Analysis of Three Dimethyl Sulfides in Freshwater Lakes Using Headspace Solid-Phase Microextraction-Gas Chromatography with Flame Photometric Detection

Differences in Growth Trends of <i>Microcystis aeruginosa</i> in Light and Dark Environments under High Frequency Monitoring

Important Role of Biogas and Secretions in the Formation of Biological Fluid Sediment under Cyanobacterial Bloom Biomass Degradation

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