In-situ study on nutrient release fluxes from shallow lake sediments under wind-driven waves

Sun, Yajun; Lu, Shaoyong; Lin, Wenshi; Wang, Dao-zeng; Fan, Jing-yu; Zhu, Lianqing

doi:10.1016/s1001-6058(16)60626-1

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…The flux of soluble species to and from the cap water phase was calculated using the following equation , F = ( C t − C 0 ) × V / ( A × t ) where F is the net flux per unit of surface area in time (μg m ‑2 d ‑1 or mg m ‑ 2 d ‑1 ); C t and C 0 are the concentrations of the soluble species in the cap water at time t and the initial concentration at time 0, respectively; V is the total volume of water in the water column; A is the cross-sectional area of the column (0.07 m 2 ); and t is the incubation time.…”

Section: Methodsmentioning

confidence: 99%

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Anaerobic Microbial Activity May Affect Development and Sustainability of End-Pit Lakes: A Laboratory Study of Biogeochemical Aspects of Oil Sands Mine Tailings

et al. 2023

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Reclamation of fluid fine tailings (FFT) produced by mined oil sands ore processing is an environmental and technical challenge. End-pit lakes (EPLs) are a prospective reclamation strategy needing comprehensive evaluation. We investigated biogeochemical changes in water quality and sediments by using 140 L columns containing 50 L of FFT, either unamended or amended with hydrocarbons, and capped with 20 L of process water to simulate an EPL. The columns were incubated up to 3 years anaerobically at 10, 20, or 30 °C. Microbial metabolism of hydrocarbons in FFT produced methane (CH4) and carbon dioxide (CO2), accelerated FFT settling by expressing more porewater to the surface, and increased turbidity in cap water. Gas ebullition caused bitumen release and chemical flux from the underlying FFT to cap water. Dissolution and biotransformation of carbonate and Fe-bearing minerals in FFT during incubation led to the positive flux of major cations (Ca2+ and Mg2+), anions (HCO3 –), and some trace elements (primarily Ba and Sr), thereby influencing the chemistry of overlying cap water. No discernible trend in flux of dissolved organic carbon and naphthenic acids was observed. The results suggest that microbial anaerobic activity stimulated by residual hydrocarbons in FFT may influence the progression of EPLs into viable aquatic ecosystems.

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Section: Methodsmentioning

confidence: 99%

“…The flux of soluble species to and from the cap water phase was calculated using the following equation 25,26…”

Section: Chemical Flux Calculationmentioning

confidence: 99%

Anaerobic Microbial Activity May Affect Development and Sustainability of End-Pit Lakes: A Laboratory Study of Biogeochemical Aspects of Oil Sands Mine Tailings

et al. 2023

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“…Studies of lakes are good early indications of the effects of current climate change on ecosystem structure and function (Adrian et al, 2009;Magnuson et al, 2000;Verburg, Hecky, and Kling, 2003;Jeppesen, Søndergaard, and Liu, 2017). Few studies have been able to quantify lake-climate relationships with precision for individual lake (Barley et al, 2006;Coats, Perez-Losada, Schladow, Richards, and Goldman, 2006;Sun, Lu, Lin, and Wang, 2016;Fee, Hecky, Kasian, and Cruikshank, 1996;Geraldi, Piccolo, and Perillo, 2010;Jeppesen et al, 2009;Jones, McMahon, and Bowler, 2001;Peeters, Livingstone, Goudsmit, Kipfer, and Forster, 2002;Plumb and Blanchfield, 2009;Shi et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Assessment of climate change and prospective analysis on shallow lakes. Las Encadenadas del Oeste watershed, Buenos Aires - Argentina

Tengroth¹,

Geraldi

2022

Ingeo

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The earth’s ecosystem is fragile, and sometimes even small changes in the climate can have impacts on the environment and society. Changes in temperature and precipitation can cause numerous feedbacks that effect the ecosystem of the whole Earth. Many studies hold that the temperature will rise in some places, while other areas will experience a cooling in annual mean temperatures. The study area is famous for its many ponds. These ecosystems will be both physically, biologically, and chemically affected by climate change and its feedbacks. Las Encadenadas del Oeste consists of seven shallow lakes (Epecuen, La Paraguaya, Venado, Del Monte, Cochico, Alsina, and Inchauspe) of various depths and sizes is a closed river basin system aligned in an east-west direction. The objectives of this work are to demonstrate the change in shallow lake size over a period of 20 years and to relate these changes to temperature and precipitation over the basin area for the same period. It is also intended to examine future temperature and precipitation scenarios in the study area. Maximum and minimum temperature data and precipitation data was retrieved from a climate station in Carhue. A multiple regression analysis was performed and five models and the shallow lake area were compared. The water levels in the shallow lakes will continue to fluctuate in the future as precipitation and temperature varies. Temperatures will increase quickly in the area; and around a 3 ºC change is expected before 2099. Only small variations in the temperatures have previously caused the lake to change in size. Precipitation patterns show a high variation, but the change is very small. Minimum temperature, which is already the most significant factor according to the statistical analysis, will in the future be an even more important factor if changes occur.

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“…In general, water disturbances and changes of water flow conditions exist in natural aquaculture water such as rivers, lakes and reservoirs. Methods of on-site observation, indoor experiments and numerical simulation have been used to study the effects of turbulent action, wind and wave disturbance, hydrodynamic action on sediment adsorption, desorption and release of pollutants Huang et al, 2015;Huang, 2001Huang, , 2003Sun, Qin, & Zhu, 2007;Sun et al, 2016;Xia, Zhang, Jiang, & Nie, 2014;. Huang (2001Huang ( , 2003 believed that the turbulence intensity has a direct impact on the movement of particulate matter in water, the concentration of suspended particulate matter and the composition of the particle size, which has a significant impact on the release or desorption of pollutants off sediments.…”

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confidence: 99%

Study on release kinetics of nitrogen and phosphorus from fish feed

et al. 2020

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In-situ study on nutrient release fluxes from shallow lake sediments under wind-driven waves

Cited by 8 publications

References 14 publications

Anaerobic Microbial Activity May Affect Development and Sustainability of End-Pit Lakes: A Laboratory Study of Biogeochemical Aspects of Oil Sands Mine Tailings

Anaerobic Microbial Activity May Affect Development and Sustainability of End-Pit Lakes: A Laboratory Study of Biogeochemical Aspects of Oil Sands Mine Tailings

Assessment of climate change and prospective analysis on shallow lakes. Las Encadenadas del Oeste watershed, Buenos Aires - Argentina

Study on release kinetics of nitrogen and phosphorus from fish feed

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