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Experimental Study Of Sedimentary Oxygen Demand In Lakes
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Book Synopsis Experimental Study of Sedimentary Oxygen Demand in Lakes by : A. A. Mackenthun
Download or read book Experimental Study of Sedimentary Oxygen Demand in Lakes written by A. A. Mackenthun and published by . This book was released on 1994 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Study of the Effect of Flow Velocity on Sediment Oxygen Demand in Lakes by : Alan Arthur Mackenthun
Download or read book An Experimental Study of the Effect of Flow Velocity on Sediment Oxygen Demand in Lakes written by Alan Arthur Mackenthun and published by . This book was released on 1995 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Analysis of Sedimentary Oxygen Demand in Lakes by : A. A. Mackenthun
Download or read book Experimental Analysis of Sedimentary Oxygen Demand in Lakes written by A. A. Mackenthun and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sediment Oxygen Demand and Its Effects on Dissolved Oxygen Concentrations and Nutrient Release by : Cynthia B. Price
Download or read book Sediment Oxygen Demand and Its Effects on Dissolved Oxygen Concentrations and Nutrient Release written by Cynthia B. Price and published by . This book was released on 1994 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lab-scale Experiment for Assessing the Effect of Resuspension and Oxygenation on Sediment Oxygen Demand by : Grace Anne Richardson
Download or read book Lab-scale Experiment for Assessing the Effect of Resuspension and Oxygenation on Sediment Oxygen Demand written by Grace Anne Richardson and published by . This book was released on 2014 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the effects of resuspending lake sediment for different time periods in a lab-scale tank under both oxic and anoxic conditions on sediment oxygen demand (SOD) and other related sediment properties. This lab-scale study was conducted as a first step to determine if a proposed method for reducing SOD by treating sediments in lakes and reservoirs is feasible. SOD is a critical process responsible for the formation of anoxic hypolimnia in lakes and reservoirs. A reduction in SOD may delay or eliminate the onset of anoxia in the hypolimnia, preventing adverse ecosystem effects and improving water quality and ecosystem function. The proposed treatment method for lakes and reservoirs would resuspend sediment into the water column and mix the suspension under aerated conditions such that near saturated DO conditions are maintained during mixing. The sediment is resuspended such that it is fully exposed to dissolved oxygen, thereby allowing oxygen-mediated chemical and biological reactions to proceed more rapidly without being rate-limited by oxygen availability as occurs within intact sediment. By maximizing oxygen uptake rates of sediment processes over a period of time, the oxygen consuming processes responsible for SOD may be partially quenched, thereby reducing SOD once the treated sediment has resettled. Current methods for oxygenation of sediments rely on oxygenation of overlying water such that oxygen diffuses into sediment. This process is typically conducted over a period of years. The method proposed may have economic benefits when compared to hypolimnetic water oxygenation treatments if the increased operating cost of rapid treatment is offset by a shorter overall required treatment time. The first step for testing the rapid method was done in a laboratory to determine if SOD is reduced due to the treatment and if oxygenation of sediments results in a greater decrease in SOD than resuspension without oxygenation. Bottom sediments were collected from a local eutrophic reservoir, split into two samples, and then placed into 284 liter aquarium tanks. Sediment samples were resuspended for 3 hours, allowed to settle, resuspended for an additional 24 hours, allowed to settle, then resuspended for an additional 120 hours before being allowed to settle again. SOD, organic matter content, and sediment and water chemistry parameters were measured before and after each treatment period. Initial SOD in the lab experiments was greater than that measured in the lake. SOD was reduced an average of 32% over the course of the experiment, with no significant benefit from oxygenation during resuspension. Organic matter and other sediment quality parameters remained unchanged throughout the treatment. The concentration of all water quality parameters with the exception of Mn increased in the water column over the course of the treatment. Overall, the rapid oxygenation treatment method explored in this study did not appear to be an economically feasible alternative to existing long-term treatment methods of hypolimnetic oxygenation, but resuspension of sediments without oxygenation may have potential as a reservoir sediment remediation technique. However, due to the high degree of experimental error in this data, further studies must be conducted to determine if SOD reduction can be repeated under more closely controlled conditions. Further studies are also required to investigate the economic feasibility, potential benefits, and potential negative impacts of the resuspension treatment method.
Book Synopsis Marine Carbon Biogeochemistry by : Jack J. Middelburg
Download or read book Marine Carbon Biogeochemistry written by Jack J. Middelburg and published by Springer. This book was released on 2019-01-25 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book discusses biogeochemical processes relevant to carbon and aims to provide readers, graduate students and researchers, with insight into the functioning of marine ecosystems. A carbon centric approach has been adopted, but other elements are included where relevant or needed. The book focuses on concepts and quantitative understanding of primary production, organic matter mineralization and sediment biogeochemistry. The impact of biogeochemical processes on inorganic carbon dynamics and organic matter transformation are also discussed.
Book Synopsis Sediment Oxygen Demand in Upper Klamath and Agency Lakes, Oregon, 1999 by : Tamara M. Wood
Download or read book Sediment Oxygen Demand in Upper Klamath and Agency Lakes, Oregon, 1999 written by Tamara M. Wood and published by . This book was released on 2001 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluating a Measure-calculate Method for Determining Sediment Oxygen Demand in Lakes by : Adrian Cole Beirise
Download or read book Evaluating a Measure-calculate Method for Determining Sediment Oxygen Demand in Lakes written by Adrian Cole Beirise and published by . This book was released on 2016 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: A steady-state mass diffusion model used with simple measurable and calculable inputs for determining sediment oxygen demand (SOD) is compared to an intact core incubation (ICI) SOD method using samples from three lakes. The mass diffusion model coupled with inputs is known as the measure-calculate method (M-C) and is a potential alternative to existing methods for measuring SOD which are more complex, time-consuming, and costly. The M-C method requires inputs for volumetric sediment oxygen uptake (Ṅsed), sediment density and porosity, and water properties. Ṅsed was determined by suspending sediment in oxygen-saturated water with a DO probe and determining the steady state rate of oxygen decline for the volume of sediment suspended. The SOD values determined using the M-C method were not significantly different from SOD determined using the ICI method using water property inputs representative of lake conditions. Thus, the study confirms the method's efficacy under test conditions and encourages further research. A separate comparison using water property inputs representative of conditions within incubated cores showed that M-C SOD correlated negatively against ICI SOD despite having similar mean values. This appears to be a result of different boundary conditions for flow velocity and DO within the core, and may discourage the ICI method's use, as tested, for determining actual in-situ lake SOD.
Book Synopsis An Experimental Study of Oxygen Uptake by Loring Sediment in Agitated Vessels by : Herng Huei Tseng
Download or read book An Experimental Study of Oxygen Uptake by Loring Sediment in Agitated Vessels written by Herng Huei Tseng and published by . This book was released on 1972 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Benthic Oxygen and Phosphorus Dynamics in Castle Lake, California by : Peter Austin Neame
Download or read book Benthic Oxygen and Phosphorus Dynamics in Castle Lake, California written by Peter Austin Neame and published by . This book was released on 1975 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxygenation of Lake Sediments by : Wayne Stanley Gardner
Download or read book Oxygenation of Lake Sediments written by Wayne Stanley Gardner and published by . This book was released on 1964 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling Sediment Oxygen Demand in Lakes by : Walker, Robert Richard
Download or read book Modelling Sediment Oxygen Demand in Lakes written by Walker, Robert Richard and published by 1980.. This book was released on 1980 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics and Control of Nutrient, Metal and Oxygen Fluxes at the Profundal Sediment-water Interface of Lakes and Reservoirs by : Marc Watson Beutel
Download or read book Dynamics and Control of Nutrient, Metal and Oxygen Fluxes at the Profundal Sediment-water Interface of Lakes and Reservoirs written by Marc Watson Beutel and published by . This book was released on 2000 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sediment Oxygen Demand in a Shallow Oxbow Lake by : Thomas A. Butts
Download or read book Sediment Oxygen Demand in a Shallow Oxbow Lake written by Thomas A. Butts and published by . This book was released on 1979 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Model for Sediment Oxygen Demand in Newman Lake, Washington by : Ping-hung Chen
Download or read book A Model for Sediment Oxygen Demand in Newman Lake, Washington written by Ping-hung Chen and published by . This book was released on 1992 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Saline Lakes written by John M. Melack and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inland saline waters are threatened worldwide by diversion and pollution of their inflows, introductions of exotic species and economic development of these ecologically valuable habitats. Since 1979 a series of international symposia on inland saline waters has served to strengthen and expand the scope of limnological research on inland saline waters. The seventh conference continued this tradition and the papers derived from the conference focused on the ecology of microbial communities, the influence of habitat geochemistry on biogeography of flora and fauna, physical and geochemical processes, and the conservation of inland saline waters. Of particular note are papers on Walker Lake, Nevada (USA), and the Salton Sea and Mono Lake, California (USA). Continued local, national and international efforts are required to inform the public and decision-makers about the environmental problems faced by saline waters. The papers in this volume will serve this end and should be of interest to aquatic ecologists, limnologists, aquaculturalists, and water resource managers.