Seasonal and diurnal dynamics of physicochemical parameters and gas production in vertical water column of a eutrophic pond

Gao, Yan; Zhang, Zhenhua; Liu, Xinhong; Yi, Neng; Zhang, Li; Song, Wei; Wang, Yan; Shen, Yan

doi:10.1016/j.ecoleng.2015.12.007

Cited by 20 publications

(18 citation statements)

References 53 publications

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“…Temperature is an important factor influencing the biological activity [19]. Hydrophytes develop and biological activity is promoted as temperature increases [28,38]. In this study, temperatures in summer and spring were higher than in winter and autumn.…”

Section: Effects Of Temperature and Do On Other Parametersmentioning

confidence: 55%

“…To investigate the diel flux of CH 4 , preliminary tests were performed, and a similar pattern of diel CH 4 flux and other water parameters (such as NH 4 + , NO 3 − , NO 2 − , and etc.) over several days was observed [28]. In this study, the day with the highest flux rate was chosen to study the diel characteristics of CH 4 flux at the sediment-water interface and the correlations between CH 4 flux and different forms of nitrogen.…”

Section: Sampling Campaignmentioning

confidence: 99%

“…NO 2 − is the product of nitrate reductase action under anoxic conditions [39,40], which did not readily occur because the SPDO was 92.41% at the sediment-water interface in winter (Table 3). Thermal stratification has been found in eutrophic ponds; this causes DO stratification in the water column of a shallow water body [27,28,38]. It has been demonstrated that DO and temperature stratifications in the water column of a hyper-eutrophic pond occur after sunrise and are strongest in the early afternoon and gradually attenuate from the afternoon to early the next morning [28,38].…”

Section: Effects Of Temperature and Do On Other Parametersmentioning

confidence: 99%

“…Thermal stratification has been found in eutrophic ponds; this causes DO stratification in the water column of a shallow water body [27,28,38]. It has been demonstrated that DO and temperature stratifications in the water column of a hyper-eutrophic pond occur after sunrise and are strongest in the early afternoon and gradually attenuate from the afternoon to early the next morning [28,38]. This study showed that DO at the sediment-water interface decreased after sunrise, reached the minima early the next morning and then increased, which almost synchronized with the diel thermal stratification characteristics.…”

Section: Effects Of Temperature and Do On Other Parametersmentioning

confidence: 99%

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Sediment-Water Methane Flux in a Eutrophic Pond and Primary Influential Factors at Different Time Scales

Liu

Gao

Zhang

et al. 2017

Water

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Water bodies are major areas for methane release. Eutrophic water bodies may promote methane flux. The sediment-water interface is the major location for methane release, and studies on sediment-water interactions are necessary to regulate methane release in water. However, relevant studies on methane flux at the sediment-water interface are limited due to methodological difficulties. Using an innovative gas trapping device, this study investigated the seasonal characteristics and diel variation in summer methane flux from eutrophic water bodies and analyzed the correlations between temperature, dissolved oxygen (DO), different forms of nitrogen and the methane flux at different time scales. The results showed that methane flux in the eutrophic pond was high and had distinct seasonal variations and diel variations: the average value was 2.81 ± 0.19 mmol m −2 h −1 in summer, which was significantly greater than that in spring (0.62 ± 0.14 mmol m −2 h −1 ), autumn (0.63 ± 0.10 mmol m −2 h −1 ) (p < 0.01) and winter (approached zero). The diel characteristics of methane flux in summer exhibited a unimodal pattern of increase at night and decrease during the day. The correlation analysis showed that the sediment-water methane flux rate of the water body was significantly positively correlated with the temperature and NH 4 + concentration and significantly negatively correlated with DO, NO 3 − and NO 2 − concentration. Meanwhile, among different time scales, the correlations between NO 3 − /NH 4 + concentration and methane flux were the highest at the diel scale in summer (R 2 = 0.68, 0.87 respectively) when the temperature and DO vibration was low and the relationship between temperature/DO and methane flux was poor (R 2 = 0.45, 0.87 respectively). This study considered that higher NH 4 + -N and lower NO 3 − -N/NO 2 − -N content in eutrophic water could have an effect on the high methane flux in summer as well as the low dissolved oxygen content.

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Section: Effects Of Temperature and Do On Other Parametersmentioning

confidence: 55%

Section: Sampling Campaignmentioning

confidence: 99%

Section: Effects Of Temperature and Do On Other Parametersmentioning

confidence: 99%

Section: Effects Of Temperature and Do On Other Parametersmentioning

confidence: 99%

See 2 more Smart Citations

Sediment-Water Methane Flux in a Eutrophic Pond and Primary Influential Factors at Different Time Scales

Liu

Gao

Zhang

et al. 2017

Water

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“…, total phosphate (TP), total organic carbon (TOC) and chl a levels was performed following the methods described by Gao et al (2016). Briefly, 300 mL water was filtered (0.45 mm pore size) for the analysis of concentration of dissolved NH 4 + , NO 3 ¡ and NO 2 ¡ ; 10 mL water was directly used to test TP; TOC was analyzed using a vario TOC instrument (Elementar, Germany); 100 mL water was centrifuged at 3000 G, and then the concentrated algae were used for analysis of chl a concentration.…”

Section: Analysis Of the Physicochemical Parameters Of The Water Samplesmentioning

confidence: 99%

Variations in abundance and community composition of denitrifying bacteria during a cyanobacterial bloom in a eutrophic shallow lake in China

Zhang

Gao

et al. 2017

Journal of Freshwater Ecology

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Although cyanobacterial blooms can change microbial communities, it is still unclear what impact such harmful blooms will have on denitrifying bacteria, the drivers of the removal of excessive nitrogen from water. In order to clarify the impact, populations of denitrifying bacteria, with periodic proliferation and dominance of cyanobacteria in a eutrophic shallow lake located in southeast China, were investigated using quantitative real-time polymerase chain reaction (qPCR) and 454-pyrosequencing based on the copper-containing nitrite reductase (nirK) gene, cytochrome cd1-containing nitrite reductase (nirS) gene and nitrous oxide reductase (nosZ) gene. Samples were collected periodically during a three-month period when the cyanobacterial density gradually increased. In the qPCR analyses, abundances of nirK, nirS and nosZ were intensely positively correlated with the biomass of cyanobacteria. Moreover, 454-pyrosequencing revealed that the community composition of denitrifying bacteria shifted with the increase in cyanobacterial density. These results indicated that the shifts of the community composition of denitrifying bacteria might be related to cyanobacterial blooms, which could potentially lead to alterations of denitrification in eutrophic water.

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Greenhouse Gas and Energy Flux Measurements with Eddy Covariance Technique Under Lowland Rice Ecology

Swain,

Chatterjee,

Nayak

et al. 2024

Advances in Global Change Research

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Seasonal and diurnal dynamics of physicochemical parameters and gas production in vertical water column of a eutrophic pond

Cited by 20 publications

References 53 publications

Sediment-Water Methane Flux in a Eutrophic Pond and Primary Influential Factors at Different Time Scales

Sediment-Water Methane Flux in a Eutrophic Pond and Primary Influential Factors at Different Time Scales

Variations in abundance and community composition of denitrifying bacteria during a cyanobacterial bloom in a eutrophic shallow lake in China

Greenhouse Gas and Energy Flux Measurements with Eddy Covariance Technique Under Lowland Rice Ecology

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