Gotowe bibliografie tematyczne / Lakes and reservoirs

Gotowa bibliografia na temat „Lakes and reservoirs”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 1 lutego 2022

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Artykuły w czasopismach na temat "Lakes and reservoirs"

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Zong, Jia-Min, Xin-Xin Wang, Qiao-Yan Zhong, Xiang-Ming Xiao, Jun Ma i Bin Zhao. "Increasing Outbreak of Cyanobacterial Blooms in Large Lakes and Reservoirs under Pressures from Climate Change and Anthropogenic Interferences in the Middle–Lower Yangtze River Basin". Remote Sensing 11, nr 15 (25.07.2019): 1754. http://dx.doi.org/10.3390/rs11151754.

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In recent decades, the increasing frequency and severity of cyanobacterial blooms in recreational lakes and water supply reservoirs have become a great concern to public health and a significant threat to the environment. Cyanobacterial bloom monitoring is the basis of early warning and treatment. Previous research efforts have always focused on monitoring blooms in a few specific lakes in China using moderate resolution imaging spectroradiometer (MODIS) images, which are available for the years 2000 onward. However, the lack of overall information on long-term cyanobacterial blooms in the lakes and reservoirs in the middle–lower Yangtze River (MLYR) basin is an obstacle to better understanding the dynamics of cyanobacterial blooms at a watershed scale. In this study, we extracted the yearly coverage area and frequency of cyanobacterial blooms that occurred from 1990 to 2016 in 30 large lakes and 10 reservoirs (inundation area >50 km2) by using time series Landsat satellite images from Google Earth Engine (GEE). Then, we calculated the cyanobacterial bloom area percentage (CAP) and the cyanobacterial bloom frequency index (CFI) and analyzed their inter-annual variation and trends. We also investigated the main driving forces of changes in the CAP and CFI in each lake and reservoir. We found that all reservoirs and more than 60% of lakes exhibited an increasing frequency and coverage area of cyanobacterial blooms under the pressures of climate change and anthropogenic interferences. Reservoirs were more prone to be affected by fertilizer consumption from their regional surroundings than lakes. High temperatures increased blooms of cyanobacteria, while precipitation in the lake and reservoir regions somewhat alleviated blooms. This study completes the data records of cyanobacterial blooms in large lakes and reservoirs located in hotspots of the MLYR basin and provides more baseline information before 2000, which will present references for water resource management and freshwater conservation.
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Kubiak, Jacek, Sylwia Machula, Katarzyna Stepanowska i Marcin Biernaczyk. "Evaluation of trophic level of the largest dimictic lakes of western Pomerania based on the Carlson criteria". Limnological Review 12, nr 2 (1.12.2012): 79–85. http://dx.doi.org/10.2478/v10194-011-0047-8.

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Abstract: Between the years 1970-2010, using the Carlson model criteria, the rate of eutrophication and trophic level of the largest dimictic lakes of Western Pomerania were studied. It was found that during the testing period, Lake Ińsko Duże was a mesotrophic reservoir, and Lakes Wądół, Będzin and Ińsko Małe were characterized by a highly advanced eutrophy. Lakes Woświn, Morzycko, Krzemień, Chłop Duży and Jelenin had borderline characteristics between being mesotrophic and eutrophic, while Lakes Narost, Chłop Mały and Wisala were typically eutrophic reservoirs. During the study, changes in the trophic level of Lakes Ińsko Duże and Morzycko and Woświn were noted. The first of the reservoirs listed had the best water quality in the second half of the 1990s, during which time the other two lakes had the worst water quality, taking into account the whole study period. Such changes were not observed in the other reservoirs examined.
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Chen, Jingan, Jingfu Wang, Jianyang Guo, Jia Yu, Yan Zeng, Haiquan Yang i Runyu Zhang. "Eco-environment of reservoirs in China". Progress in Physical Geography: Earth and Environment 42, nr 2 (23.01.2018): 185–201. http://dx.doi.org/10.1177/0309133317751844.

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China is home to 97,246 reservoirs, most of which are sub-deep water reservoirs characterized by seasonal stratification and multiple interfaces in the water body. The prominent eco-environmental problems, such as eutrophication and accidental deterioration in water quality, restrict reservoir construction. Compared to natural lakes, reservoirs have specific geologic backgrounds and eco-environmental characteristics, which manifest in the following aspects: (a) the origin of the water environment and ecological system of the reservoir is different from natural lakes; (b) sediment is rich in organic matter and nutrients; (c) water eutrophication and heavy metal pollution are tightly interlocked; (d) multi-interface and seasonal stratification control the key physicochemical and biological processes; (e) the cumulative effect of the material cycle has an important influence on the water environment and ecological security; (f) artificial regulation of water level leads to the ecological degradation of the hydro-fluctuation belt; and (g) the slow response of the aquatic ecosystem to the reduction of external load. Research on the eco-environment of sub-deep water reservoirs trails that of natural lakes in China. After describing the eco-environmental characteristics of reservoirs in China, we address potential challenges and propose future research directions to develop a full understanding of the complex biogeochemical processes prevalent in reservoirs.
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Bacal, Petru, Ana Jeleapov i Daniela Burduja. "STATE AND USE OF LAKES FROM CENTRAL REGION OF THE REPUBLIC OF MOLDOVA". Present Environment and Sustainable Development 13, nr 2 (15.10.2019): 141–55. http://dx.doi.org/10.15551/pesd2019132010.

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The article is dedicated to assessment of the state and use of lakes and reservoirs situated in the Central Region of the Republic of Moldova. The results showed that 1155 reservoirs and ponds with a total area of 11.4 ths. ha are situated in the limits of 14 districts. Over half of them are constructed on the streams. At the district level, the biggest number of lakes is located in Călărași (204), Orhei (139) and Ungheni (136), but the largest surface is attested in Ialoveni (1844 ha), Ungheni (1584 ha), Teleneşti (1358 ha). The reservoir basin status is satisfactory only in case of 1/3 (381) of reservoirs, 40% being silted. Hydro-technical infrastructure is satisfactory at ≈2/3 of reservoirs. The reservoirs are used for fishery (34%), general use (31%), irrigation (13%), mixed use (7%). Only 47 lakes or 12% are used mainly for recreational purposes.
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O′Melia, Charles R. "Coagulation and sedimentation in lakes, reservoirs and water treatment plants". Water Science and Technology 37, nr 2 (1.01.1998): 129–35. http://dx.doi.org/10.2166/wst.1998.0122.

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Coagulation and sedimentation occur naturally in all lakes and reservoirs and, by design, in water treatment plants using surface supplies. Important factors that affect water quality in lakes and reservoirs include nutrient loading, areal hydraulic loading, and detention time together with the concentrations of land-derived (pedogenic) natural organic matter and hardness in waters entering the lake or reservoir. These, in turn, have important effects on the design and operation of potable water treatment systems. It is difficult and expensive to use the good physics to compensate for poor chemistry in water treatment plant design. There are many interesting and useful similarities among the physical and chemical characteristics of lakes, reservoirs, and water treatment plants.
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Xu, Nan, Huiying Zheng, Yue Ma, Jian Yang, Xinyuan Liu i Xiaohua Wang. "Global Estimation and Assessment of Monthly Lake/Reservoir Water Level Changes Using ICESat-2 ATL13 Products". Remote Sensing 13, nr 14 (13.07.2021): 2744. http://dx.doi.org/10.3390/rs13142744.

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Accurate and detailed information on lake/reservoir water levels and temporal changes around the globe is urgently required for water resource management and related studies. The traditional satellite radar altimeters normally monitor water level changes of large lakes and reservoirs (i.e., greater than 1 km2) around the world. Fortunately, the recent Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) makes it possible to monitor water level changes for some small lakes and reservoirs (i.e., less than 1 km2). ICESat-2 ATL13 products provide observations of inland water surface heights, which are suitable for water level estimation at a global scale. In this study, ICESat-2 ATL13 products were used to conduct a global estimation and assessment of lake/reservoir water level changes. We produced monthly water levels for 13,843 lakes and reservoirs with areas greater than 0.1 km2 and all-season ATL13 products across the globe, in which 2257 targets are smaller than 1 km2. In total, the average valid number of months covered by ICESat-2 is 5.41 months and only 204 of 13,843 lakes and reservoirs have water levels in all the months in 2019. In situ water level data from 21 gauge stations across the United States and 12 gauge stations across Australia were collected to assess the monthly lake/reservoir water levels, which exhibited a high accuracy (RMSE = 0.08 m, r = 0.999). According to comparisons between the monthly water levels and changes from ATL08 products in another study and ATL13 products in this study, we found that both products can accurately estimate the monthly water level of lakes and reservoirs, but water levels derived from ATL13 products exhibited a higher accuracy compared with water levels derived from ATL08 products (RMSE = 0.28 m, r = 0.999). In general, the ATL13 product is more convenient because the HydroLAKES mask of inland water bodies, the orthometric height (with respect to the EGM2008 geoid) of water surfaces, and several data quality parameters specific to water surfaces were involved in the ATL13 product.
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Johnston, Thomas A., R. A. Bodaly i J. A. Mathias. "Predicting Fish Mercury Levels from Physical Characteristics of Boreal Reservoirs". Canadian Journal of Fisheries and Aquatic Sciences 48, nr 8 (1.08.1991): 1468–75. http://dx.doi.org/10.1139/f91-174.

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Reservoir formation has often resulted in increased fish mercury levels. Predicting the potential for increase prior to impoundment would be useful in future environmental impact assessment.. We developed several linear models relating mercury burdens of northern pike (Esox lucius), walleye (Stizostedion vitreum), and lake whitefish (Coregonus clupeaformis) to physical characteristics of 21 lakes and reservoirs in the Churchill River diversion region of northern Manitoba. Ratios of flooded terrestrial area to water volume of the reservoir itself (within-lake effects) and of inflowing waters (upstream effects) were able to explain 76–84% of the variation in mean mercury burden. Upstream effects consistently accounted for more variation than within-lake effects. We tested these models using data from 18 Canadian lakes and reservoirs. Manitoba reservoirs generally fit the models well. The largest deviations of observed mercury levels from predicted mercury levels were for reservoirs of northern Quebec and Labrador We attribute this to differences in the relative contributions of within-lake effects and upstream effects between reservoirs of this region and those used to build the models. Future models should refine the relative contributions of these two components for individual reservoirs.
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Montgomery, Shelagh, Marc Lucotte, Pierre Pichet i Alfonso Mucci. "Total dissolved mercury in the water column of several natural and artificial aquatic systems of Northern Quebec (Canada)". Canadian Journal of Fisheries and Aquatic Sciences 52, nr 11 (1.11.1995): 2483–92. http://dx.doi.org/10.1139/f95-839.

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Total dissolved mercury concentrations in the water column of the La Grande-2 and Laforge-1 hydroelectric reservoirs and four neighbouring lakes near James Bay, northern Quebec, were measured to establish the impacts of extensive flooding of terrestrial environments on this potential vector of contamination to the aquatic biota. During three field visits between June and October 1993, while the sites were free from ice cover and the water column was not strongly stratified, filtered water samples were collected from multiple depths at various locations within both reservoirs and the four lakes. To compare the diverse subenvironments within the reservoir systems, sampling sites were selected to represent differences in (i) type of flooded soil, (ii) impoundment history, and (iii) water depth. At all stations total dissolved mercury concentrations were nearly constant, with an average value of 2.30 ng∙L−1 and a standard error of 0.04 ng∙L−1. Furthermore, reservoir concentrations were not statistically different from those of the lakes. Hence, we propose that the dissolved component in the water column does not play a significant role in the transfer of inorganic mercury to the aquatic food chain in recently developed hydroelectric reservoirs.
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Barbosa, C., E. Novo, R. Ferreira, L. Carvalho, C. Cairo, F. Lopes, J. Stech i E. Alcantara. "Brazilian inland water bio-optical dataset to support carbon budget studies in reservoirs as well as anthropogenic impacts in Amazon floodplain lakes: Preliminary results". ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-7/W3 (30.04.2015): 1439–46. http://dx.doi.org/10.5194/isprsarchives-xl-7-w3-1439-2015.

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This work presents ongoing efforts and preliminary results for building a dataset that represents the first and most comprehensive bio-optical information available on Brazilian inland waters to support the development of remote sensing algorithms for monitoring aquatic systems. From 2012 to 2014 optical and limnological data was gathered along thirteen field campaigns in five Brazilian reservoirs, in an irrigation and domestic water supply reservoir located in semi-arid northeast of the country and in Amazonian floodplain lakes, thus covering the diversity of Brazilian inland waters. At each site 20 stations, on average, were sampled to acquire profiles of the following optical variables: absorption, attenuation, scattering, and backscattering coefficients and radiances/irradiances spectra above and in-water. Alongside these measurements, water samples were collected for determining concentrations of chlorophyll-a (Chl-a), Total Suspended Solid (TSS), Total Dissolved Carbon (TDC) and its organic/inorganic fractions, CDOM absorption, phytoplankton specific absorption [aph*] and Non-Algal Particles absorption [aNAP*]. Preliminary results show that Chl-a concentrations ranged from 0.6 to 243μg/L in reservoirs and 0.90 to 92μg/L in Amazonian lakes, while TSS concentrations ranged from 0.3 to 31mg/L in reservoirs and 0.5 to 162mg/L in Amazonian lakes. In situ beam attenuation coefficients ranged from 1.4 to 16m-1 in reservoirs and 12.5 to 38m-1 in Amazonian lakes, while diffuse attenuation coefficients of downwelling irradiance over the Photosynthetically Active Radiation (Kd(PAR)) extended from 0.35 to 4.5m-1 in reservoirs and 1.69 to 13.30m-1 in Amazonian lakes. Our research group is building this dataset anticipating future demands for algorithm validation regarding OLI/Landsat8 data and ESA Sentinel missions to be launched as of 2015.
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Pan, Bao Yuan, Guo Ting Yang, Yun Ma i Yi Bin Ren. "Countermeasure and Research of Jingbo Lake Water Environment Rehabilitation". Advanced Materials Research 518-523 (maj 2012): 164–67. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.164.

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China is a country with a large lakes, with the development of social economy, the water pollution of lakes is more serious, lake’s eutrophication has become the major environmental problems of the China's lakes and reservoirs. This document explains through the investigation and evaluation environment to analyze the current situation and the pollution of Jingbo Lake, and puts forward countermeasures and pollution control environmental protection measures for management of Jingbo Lake, develop and provide technical reference of Jingbo Lake.
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Rozprawy doktorskie na temat "Lakes and reservoirs"

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Yeates, Peter Stafford. "Deep mixing in stratified lakes and reservoirs". University of Western Australia. Centre for Water Research, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0046.

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The onset of summer stratification in temperate lakes and reservoirs forces a decoupling of the hypolimnion from the epilimnion that is sustained by strong density gradients in the metalimnion. These strong gradients act as a barrier to the vertical transport of mass and scalars leading to bottom anoxia and subsequent nutrient release from the sediments. The stratification is intermittently overcome by turbulent mixing events that redistribute mass, heat, dissolved parameters and particulates in the vertical. The redistribution of ecological parameters then exerts some control over the ecological response of the lake. This dissertation is focused on the physics of deep vertical mixing that occurs beneath the well-mixed surface layer in stratified lakes and reservoirs. The overall aim is to improve the ability of numerical models to reproduce deep vertical mixing, thus providing better tools for water quality prediction and management. In the first part of this research the framework of a one-dimensional mixed-layer hydrodynamic model was used to construct a pseudo two-dimensional model that computes vertical fluxes generated by deep mixing processes. The parameterisations developed for the model were based on the relationship found between lake-wide vertical buoyancy flux and the first-order internal wave response of the lake to surface wind forcing. The ability of the model to reproduce the observed thermal structure in a range of lakes and reservoirs was greatly improved by incorporating an explicit turbulent benthic boundary layer routine. Although laterally-integrated models reproduce the net effect of turbulent mixing in a vertical sense, they fail to resolve the transient distribution of turbulent mixing events triggered by local flow properties defined at far smaller scales. Importantly, the distribution of events may promote tertiary motions and ecological niches. In the second part of the study a large body of microstructure data collected in Lake Kinneret, Israel, was used to show that the nature of turbulent mixing events varied considerably between the epilimnion, metalimnion, hypolimnion and benthic boundary layer, yet the turbulent scales of the events and the buoyancy flux they produced collapsed into functions of the local gradient Richardson number. It was found that the most intense events in the metalimnion were triggered by high-frequency waves generated near the surface that grew and imparted a strain on the metalimnion density field, which led to secondary instabilities with low gradient Richardson numbers. The microstructure observations suggest that the local gradient Richardson number could be used to parameterise vertical mixing in coarse-grid numerical models of lakes and reservoirs. However, any effort to incorporate such parameterisations becomes meaningless without measures to reduce numerical diffusion, which often dominates over parameterised physical mixing. As a third part of the research, an explicit filtering tool was developed to negate numerical diffusion in a threedimensional hydrodynamic model. The adaptive filter ensured that temperature gradients in the metalimnion remained within bounds of the measured values and so the computation preserved the spectrum of internal wave motions that trigger diapycnal mixing events in the deeper reaches of a lake. The results showed that the ratio of physical to numerical diffusion is dictated by the character of the dominant internal wave motions.
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Gipey, Collins D. "Manganese analysis and speciation in freshwater lakes and reservoirs /". [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16202.pdf.

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Koçyigit, Müsteyde Baduna. "Numerical modelling of wind-induced circulation in lakes and reservoirs". Thesis, Cardiff University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412516.

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Bierlein, Kevin Andrew. "Predicting induced sediment oxygen flux in oxygenated lakes and reservoirs". Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/73502.

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Bubble plume oxygenation systems are commonly used to mitigate anoxia and its deleterious effects on water quality in thermally stratified lakes and reservoirs. Following installation, increases in sediment oxygen flux (JO2) are typically observed during oxygenation and are positively correlated with the bubble plume gas flow rate. Studies show that JO2 is controlled by the thickness of the diffusive boundary layer (DBL) at the sediment-water interface (SWI), which is in turn controlled by turbulence. As a result, JO2 can be quite spatially and temporally variable. Accurately predicting oxygenation-induced JO2 is vitally important for ensuring successful oxygenation system design and operation. Yet despite the current understanding of physical and chemical controls on JO2, methods for predicting oxygenation-induced JO2 are still based on empirical correlations and factors of safety. As hypolimnetic oxygenation becomes more widely used as a lake management tool for improving and maintaining water quality, there is a need to move from the current empirically based approach to a mechanistic approach and improve the ability to predict induced JO2. This work details field campaigns to investigate and identify appropriate models of oxygen supply to the SWI and oxygen demand exerted from the sediment, with the intent to use these models to predict oxygenation-induced JO2. Oxygen microprofiles across the SWI and near-sediment velocity measurements were collected in situ during three field campaigns on two oxygenated lakes, providing simultaneous measurements of JO2 and turbulence. Field observations show that oxygenation can increase JO2 by increasing bulk hypolimnetic oxygen concentrations, which increases the concentration gradient across the SWI. Oxygenation can also enhance turbulence, which decreases the DBL thickness and increases JO2. Existing models of interfacial flux were compared to field measurements to determine which model best predicted the observed JO2. Models based on the Batchelor scale, friction velocity, and film-renewal theory all agree reasonably well with field observations in both lakes. Additionally, the oxygen microprofiles were used to fit a transient model of oxygen kinetics in lake sediment and determine the appropriate kinetic model. Oxygen microprofiles in both lakes can be described using zero-order kinetics, rather than first-order kinetics. The interfacial flux and sediment kinetic models are incorporated into a coupled bubble plume and 3-D hydrodynamic lake model, allowing for spatial and temporal variation in simulated JO2. This comprehensive model was calibrated and validated to field data from two separate field campaigns on Carvin's Cove Reservoir, Virginia. Simulated temperature profiles agreed quite well with field observations, while simulated oxygen profiles differed from observed profiles, particularly in the bottom 1 m of the water column. The model overestimates oxygen concentrations near the sediment, which results in higher simulated JO2 than was observed during the field campaigns. These discrepancies are attributed to oxygen-consuming chemical processes, such as oxidation of soluble metals, which are not accounted for in the hydrodynamic model. Despite this, the model is still able to capture the impact of bubble plume operation on JO2, as simulated JO2 is higher when the diffusers are operating. With some additional improvements to the water quality modeling aspects of the model, as well as further calibration and validation, the model should be able to reproduce observed JO2 provided oxygen concentrations near the SWI are accurately reproduced as well. The current work is an attempt to push toward a comprehensive lake oxygenation model. A comprehensive model such as this should improve the ability to predict oxygenation-induced JO2 and lead to improvements in the design and operation of hypolimnetic oxygenation systems.
Ph. D.
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Littlejohn, Carla Louise, i n/a. "Influence of Artificial Destratification on Limnological Processes in Lake Samsonvale (North Pine Dam), Queensland, Australia". Griffith University. Australian School of Environmental Studies, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050211.133123.

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Artificial destratification equipment was installed in Lake Samsonvale in October 1995 to reduce the biomass of potentially toxic cyanobacteria in the reservoir. This study was undertaken to investigate the effects of the destratifier on the limnological processes occurring in the lake and to determine if operation of the destratifier has been effective at reducing the summer populations of Cylindrospermopsis raciborskii and Microcystis aeruginosa. The study showed that artificial destratification of Lake Samsonvale has been successful at reducing the surface to bottom thermal gradient and increasing dissolved oxygen concentrations at depth. While the destratifier has not resulted in the lake becoming completely 'mixed' during summer, it has weakened resistance to mixing from meteorological events, which has led to a reduction in mean concentrations of total and dissolved phosphorus during summer. Although not conclusive, it is likely that the influence of the destratifier is restricted to a narrow radial distance around the bubbleplumes during periods of strong stability, so internal loading may continue to provide a substantial source of nutrients for cyanobacterial growth, particularly in regions of the lake less influenced by the destratifier. The results for cyanobacteria are less encouraging. Despite the reduction in concentrations of dissolved phosphorus, the destratifier has not been effective at reducing summer populations of C. raciborskii and M. aeruginosa. On the contrary, there is evidence to suggest that populations have actually increased which could have serious operational consequences for the lake by mixing the previously buoyant cyanobacteria to the level of the water off-take. The growth season for C. raciborskii has been extended by up to 3 months and population onset now occurs during spring. This increase in spring populations could be a result of significantly greater baseline populations during winter, or the earlier germination of akinetes as a result of increased sediment temperatures. The seasonal successional relationship between C. raciborskii and M. aeruginosa appears to have shifted from one of alternating dominance between the two species to one of co-existence under conditions of intermediate disturbance. It was concluded that although the continued operation of the destratifier may prove useful to minimise water treatment costs through reducing internal loading of dissolved constituents, it has not been successful in achieving its original objective of controlling cyanobacterial populations in the lake.
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Doubek, Jonathan Patrick. "The Effects of Hypoxia on Zooplankton Communities in Lakes and Reservoirs". Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/83574.

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Global change is altering the community composition, variability, and behavior of organisms in a diverse suite of ecosystems. Because of climate change and eutrophication, freshwater lakes and reservoirs are experiencing an increase in low dissolved oxygen concentrations (hypoxia) in their bottom waters (hypolimnion), which can disrupt ecological communities. Zooplankton, important aquatic organisms for regulating water quality and food webs, are one group of organisms affected by hypoxia since zooplankton need oxygen to respire. My research shows that hypoxia may disrupt zooplankton behavior and increase the variability of zooplankton communities. Zooplankton ubiquitously exhibit diel vertical migration, where the majority of the population resides in the hypolimnion during the daytime to escape predation from fish and damage from ultraviolet radiation. At night, many zooplankton ascend to the surface waters to feed on phytoplankton, when there is decreased risk of predation and radiation. My results from intensive 24-hour sampling campaigns suggest that hypolimnetic hypoxia may alter zooplankton migration, biomass, and behavior, which may in turn exacerbate water quality degradation due to the critical role zooplankton play in freshwater ecosystems. In addition, field surveys in four reservoirs over three years revealed that hypoxia may increase the variability of zooplankton communities compared to oxic conditions. Consequently, as lakes and reservoirs experience increased extent and duration of hypoxia in the future, it is critical to understand how more variable zooplankton communities alter freshwater ecosystem functioning.
Ph. D.
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Morillo, Sebastian. "Engineering solutions to water quality problems in lakes". University of Western Australia. Centre for Water Research, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0153.

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Lake restoration and management strategies focus on reducing the negative impacts of enriched or polluted inflows. These strategies become of paramount importance when lakes are used for recreational and/or drinking water purposes. Long term control of eutrophication and turbidity problems associated with large inflow loads is usually oriented to catchment management. Although it has been suggested that this is the correct long term approach, public concerns usually require a short term solution. In addition, due to political and economic costs related to changes in catchment management, in-lake restoration technologies have been emerging as a viable pretreatment option, complementary to water treatment plants, both reducing the operational costs of the water treatment plant and ameliorating the water residing in the lakes. This research investigates the effects of two in-lake technologies on the dynamics of inflowing rivers, where basin shape plays a significant role. The three lakes in this study suffer from eutrophication combined with a distinctive water quality problem: from turbidity in Silvan Reservoir (Australia), to heavy metal loads in Coeur d'Alene Lake (USA) and industrial wastes in Lake Como (Italy). Firstly, the influence of basin morphology, wind speed, and wind direction on the fate and transport of two rivers flowing into the L-shaped Coeur d'Alene Lake was examined, and it was shown that transport and mixing patterns in a lake can be greatly influenced by the shape of the lake, leading to important consequences for the plankton ecology in the lake. Secondly, in Silvan Reservoir we investigated the potential to modify the basin shape using vertical barriers, increasing the retention time and hence the barrier capacity to microbial pollution. A final in-lake technology was tested for Lake Como, using a downward pointing impeller to remove polluted water from the coastal margin. Lessons from these three examples indicate that there is significant potential for in-lake remediation at relatively low cost, over relatively short timescales.
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Weisbrod, Barbara [Verfasser]. "Dynamics of toxic cyanobacteria in lakes and artificial water reservoirs / Barbara Weisbrod". Konstanz : KOPS Universität Konstanz, 2021. http://d-nb.info/1228271925/34.

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Wilson, Helen M. "An evaluation of alternative management strategies for shallow eutrophicated lakes and reservoirs". Thesis, University of Plymouth, 1995. http://hdl.handle.net/10026.1/1870.

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External phosphorus loadings on a range of freshwater Sites of Special Scientific Interest (SSSIs) thought to be affected by eutrophication were predicted utilising export coefficients. The effect of such loadings on lake trophic status was evaluated using the Vollenweider-OECD eutrophication model. Estimates of the relative contribution of phosphorus from various sources enabled the selection of possible reduction strategies on a site specific basis. The effect of reduction strategies on trophic status was predicted with the aid of the model. It was established that diffuse agricultural losses of phosphorus are the most common source of enrichment. However, consented discharges of sewage efHuent appear to affect a significant number of sites. Phosphorus in urban runoff is a notable source for lakes situated in less rural areas. Agricultural point sources significantly influence a small number of lakes. A critique of the methodology concluded that the use of separate export coefficients for organic and inorganic sources may be useful for identifying appropriate management strategies, but that the scientific basis for such an approach is dubious. In addition, the employment of agricultural returns for data on livestock levels may introduce an unacceptable degree of error into the calculations. The Vollenweider-OECD model appears to predict the trophic status of the lakes under assessment reasonably well, but there is a need for a reliable method of ascertaining loading reduction objectives. A review of current legislation and policy applicable to the alleviation of eutrophication of freshwater SSSIs encompassed laws relating to nature conservation, to water quality, and to agricultural extensiflcation. It confirmed that legislation which directly addresses the problem is nonexistent, but that certain laws may be applied in a piecemeal manner. In general, the form of nature conservation protection adopted in this country is not designed to prevent deterioration of water quality. An aspect of eutrophication control which may prove to be the most problematical in legislative teniis is the regulation of diffuse agricultural sources of phosphorus. Proposals for changes in law and policy on this issue included the establishment of a catchment-wide scheme, specifically designed to reduce diffuse agricultural lossesof phosphorus, and targeted at eutrophicated SSSIs.
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Garaway, Caroline Jane. "Small waterbody fisheries and the potential for community-led enhancement : case studies in Lao PDR". Thesis, Imperial College London, 1999. http://hdl.handle.net/10044/1/12552.

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Based on case studies in Lao PDR, this research investigates the importance of small waterbody fisheries to rural households, the impact of enhancement initiatives on resources and resource users, and the opportunities and constraints of communityled enhancement. Detailed biological, socio-economic, and institutional data on small water body fisheries were collected and analysed in an integrated framework. Small waterbody fisheries contributed substantially to rural livelihoods, with average household catches of 66 kg/year, equivalent in value to approximately half the household rice production (the major crop grown in the region). Poorer households caught and sold more fish than other socio-economic groups. Active management of small waterbody fisheries by stocking and the regulation of fishing had significant impacts on fish stocks, yields, and the type, magnitude and distribution of benefits to villagers. Stocked fisheries managed by and for the village showed higher standing stocks and returns to fishing effort, and thus generated substantial efficiency benefits even though yields were not significantly higher than in unmanaged fisheries. Benefits were in the form of income to the community, partially passed on to households, (equally between socio-economic groups), through reduced financial contributions to the village. Institutional analysis suggests that locally adapted rules, ownership rights, low cost monitoring and enforcement, and information about benefits are key factors in promoting and sustaining community enhancement efforts, as well as the presence of individuals with substantial leadership skills. Results suggest that communities can and do successfully set up and maintain enhancement initiatives and that enhancement of small water body fisheries can generate substantial benefits. However these will only be sustained if it corresponds to villager's objectives and coincides with conducive institutional arrangements and, crucially, an enabling external policy environment. To achieve the full potential of enhancements, research should be aimed at furthering villager's understanding of the status and potential of their resource in terms of these objectives.
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Książki na temat "Lakes and reservoirs"

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W, Herschy Reginald, Fairbridge, Rhodes W. (Rhodes Whitmore), 1914-2006 i SpringerLink (Online service), red. Encyclopedia of Lakes and Reservoirs. Dordrecht: Springer Netherlands, 2012.

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Judd, Harry Lewis. Utah's lakes and reservoirs: Inventory and classification of Utah's priority lakes and reservoirs. Salt Lake City, Utah: Utah Department of Environmental Quality, Division of Water Quality, 1997.

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Jørgensen, Sven Erik. Lakes and reservoirs: Water quality : the impact of eutrophication. Shiga, Japan: United Nations Environment Programme-International Environmental Technology Centre, 2001.

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Rast, Walter. Lakes and reservoirs: The watershed : water from the mountains into the sea. Shiga, Japan: United Nations Environment Programme-International Environmental Technology Centre, 2001.

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Nikitin, A. M. Vodnye resursy i vodnyĭ balans ozer i vodokhranilishch Sredneĭ Azii. Moskva: Moskovskoe otd-nie Gidrometeoizdata, 1986.

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Milan, Stras̆kraba, International Lake Environment Committee. i UNEP International Environmental Technology Centre., red. Similarities, differences and importance. Shiga, Japan: United Nations Environment Programme-International Environmental Technology Centre, 2000.

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Baker, Lawrence A., red. Environmental Chemistry of Lakes and Reservoirs. Washington, DC: American Chemical Society, 1994. http://dx.doi.org/10.1021/ba-1994-0237.

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Meeting, American Chemical Society. Environmental chemistry of lakes and reservoirs. Redaktorzy Baker Lawrence A i American Chemical Society. Division of Environmental Chemistry. Washington, DC: American Chemical Society, 1994.

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Fishing man-made lakes. Minnetonka, Minn: Cy DeCosse, 1993.

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LaBounty, J. F. Lakes, ponds, and reservoirs: What they are and how to study them. Denver, Colo: Applied Sciences Branch, Division of Research, Engineering and Research Center, U.S. Dept. of the Interior, Bureau of Reclamation, 1985.

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Części książek na temat "Lakes and reservoirs"

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Shaban, Amin. "Lakes and Reservoirs". W World Water Resources, 89–105. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48717-1_6.

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Trimble, S. W., B. Wilson, Reginald Herschy, Bijan Dargahi, Hubert Chanson, Reginald W. Herschy, Reginald W. Herschy i in. "Reservoirs, Multipurpose Use of Small Reservoirs". W Encyclopedia of Lakes and Reservoirs, 662–68. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_234.

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Hall, Ken J., i Thomas G. Northcote. "Meromictic Lakes". W Encyclopedia of Lakes and Reservoirs, 519–24. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_127.

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Gurunadha Rao, V. V. S., Mogali J. Nandan, Reginald W. Herschy, Reginald W. Herschy i Jesper Persson. "Udaipur, Lakes". W Encyclopedia of Lakes and Reservoirs, 827–28. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_172.

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Trimble, S. W., B. Wilson, Reginald Herschy, Bijan Dargahi, Hubert Chanson, Reginald W. Herschy, Reginald W. Herschy i in. "Russian Lakes". W Encyclopedia of Lakes and Reservoirs, 674–79. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_198.

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Herschy, Reginald W., Esko Kuusisto, Lauri Arvola, Marko Järvinen, Mogali J. Nandan i Reginald W. Herschy. "Finnish Lakes". W Encyclopedia of Lakes and Reservoirs, 274–76. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_213.

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Asaeda, Takashi, i Ryuichiro Shinohara. "Japanese Lakes". W Encyclopedia of Lakes and Reservoirs, 415–19. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_249.

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Myrbo, Amy, Rhodes W. Fairbridge, Hans Sampl, Mikhail V. Bolgov, Jacques Lemoalle, Jean-Claude Bader, Marc Leblanc i in. "Chinese Lakes". W Encyclopedia of Lakes and Reservoirs, 156–60. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_259.

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Hellström, Thomas, Rhodes W. Fairbridge, Lars Bengtsson, Barbara Wohlfarth, Reginald W. Herschy, Anders Hargeby, Irmgard Blindow i in. "Arctic Lakes". W Encyclopedia of Lakes and Reservoirs, 68. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_27.

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Hellström, Thomas, Rhodes W. Fairbridge, Lars Bengtsson, Barbara Wohlfarth, Reginald W. Herschy, Anders Hargeby, Irmgard Blindow i in. "Alpine Lakes". W Encyclopedia of Lakes and Reservoirs, 7–9. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-1-4020-4410-6_34.

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Streszczenia konferencji na temat "Lakes and reservoirs"

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Scholz, Christopher A. "Advancing Models of Facies Variability and Lacustrine Source Rock Accumulation in Rifts: Implications for Exploration". W SPE/AAPG Africa Energy and Technology Conference. SPE, 2016. http://dx.doi.org/10.2118/afrc-2577056-ms.

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ABSTRACT Important syn-rift hydrocarbon discoveries in the Tertiary East African Rift and in the South Atlantic subsalt basins have in recent years promoted renewed interest in the variability of source and reservoir rock facies in continental rifts. This talk considers several important new observations and developments in our understanding of the sedimentary evolution of lacustrine rift basins. Offshore subsalt basins in the South Atlantic demonstrate the importance of lacustrine carbonates, and especially microbialites, as reservoir facies in extensional systems. The role of rift-related magmatism is significant in these basins, both as drivers of hydrothermal systems around and within rift lakes, and as a source of solutes that facilitate carbonate accumulations. In the Tertiary East African Rift, substantial new hydrocarbon resources have been identified, including onshore siliciclastic reservoirs in remarkably young and shallow parts of the sedimentary section in the Albertine Graben. Rollover anticlines and fault-related folds serve as important structures for several new fields in the East African Rift, but larger structures affiliated with accommodation zones, in many instances located far offshore in the modern lakes, remain untested. Lacustrine source rocks that accumulated in stratified lake basins are the source of the oil and gas in these systems, however there is still much to be learned about their spatial and temporal variability. There is observed considerable variation in the character of organic matter on the floors of modern African lake basins, even adjacent ones. A number of factors likely govern the amount of total organic carbon preserved within the basins. These include 1) primary productivity; 2) degree of siliciclastic dilution, which is controlled in part by offshore slopes and the extent of onshore catchments, and 3) physical limnology, controlled by climate and basin-scale physiography, and the fetch-depth ratio of the lakes, which determines the likelihood of water column stratification. Scientific drilling in the African Rift lake basins is providing considerable information on the high temporal hydroclimate variability of the region, especially in the later Tertiary and Quaternary, which substantially controls basin lithofacies.
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Wang, Xiaoyi, Qiwen Hao, Shuoqi Dong, Jiping Xu i Lu Sheng. "Algal bloom formation process mechanism: modeling simulation in lakes reservoirs". W International Association of Management Science and Engineering Technology. Southampton, UK: WIT Press, 2012. http://dx.doi.org/10.2495/aie120491.

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Shojaei, Nasim, i Scott Wells. "Automatic Calibration of Water Quality Models for Reservoirs and Lakes". W World Environmental and Water Resources Congress 2014. Reston, VA: American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413548.102.

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Kostic, Svetlana, i Gary Parker. "Front-fixing Model of Turbidity Currents at River Deltas in Lakes and Reservoirs". W Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40517(2000)283.

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Yao, J. Y., H. Y. Zhang, X. Y. Wang, J. P. Xu i L. Wang. "A grey-theory-based water-quality evaluation and prediction research on lakes and reservoirs". W International Conference on Computer Science and Technology. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/iccst140421.

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Al-Zubaidi, Hussein A. M., i Scott A. Wells. "3D Numerical Temperature Model Development and Calibration for Lakes and Reservoirs: A Case Study". W World Environmental and Water Resources Congress 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480601.051.

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Havig, Jeff R., i Trinity L. Hamilton. "POTENTIAL EFFECTS OF EUTROPHICATION-INDUCED CYANOBACTERIAL BLOOMS AND INVASIVE MUSSEL SPECIES ON CARBON CYCLING AND BURIAL IN GREAT LAKES REGION LAKES AND RESERVOIRS". W 52nd Annual North-Central GSA Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018nc-312299.

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Zhou, Baohua, i Zhanhong Liu. "Comparative Analysis of the GIS-based Trophic States of Lakes and Reservoirs in Shandong Province". W 2016 7th International Conference on Education, Management, Computer and Medicine (EMCM 2016). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/emcm-16.2017.132.

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Lin, Li, Li Lin, Min Wu, Min Wu, Xianqiang Tang, Xianqiang Tang, Liangyuan Zhao, Liangyuan Zhao, Qingyun Li i Qingyun Li. "Key Technology for Constructing Mobile System of Water Purification System in Eutrophic Lakes and Reservoirs". W International Workshop on Environment and Geoscience. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0007427701760181.

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Garrett, Alfred J., Robert J. Kurzeja, Byron L. O'Steen, Matthew J. Parker, Malcolm M. Pendergast, Eliel Villa-Aleman i Mary A. Pagnutti. "Observations and model predictions of water skin temperatures at MTI core site lakes and reservoirs". W Aerospace/Defense Sensing, Simulation, and Controls, redaktorzy Sylvia S. Shen i Michael R. Descour. SPIE, 2001. http://dx.doi.org/10.1117/12.437012.

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Raporty organizacyjne na temat "Lakes and reservoirs"

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Chidsey, Thomas C., David E. Eby, Michael D. Vanden Berg i Douglas A. Sprinkel. Microbial Carbonate Reservoirs and Analogs from Utah. Utah Geological Survey, lipiec 2021. http://dx.doi.org/10.34191/ss-168.

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Multiple oil discoveries reveal the global scale and economic importance of a distinctive reservoir type composed of possible microbial lacustrine carbonates like the Lower Cretaceous pre-salt reservoirs in deepwater offshore Brazil and Angola. Marine microbialite reservoirs are also important in the Neoproterozoic to lowest Cambrian starta of the South Oman Salt Basin as well as large Paleozoic deposits including those in the Caspian Basin of Kazakhstan (e.g., Tengiz field), and the Cedar Creek Anticline fields and Ordovician Red River “B” horizontal play of the Williston Basin in Montana and North Dakota, respectively. Evaluation of the various microbial fabrics and facies, associated petrophysical properties, diagenesis, and bounding surfaces are critical to understanding these reservoirs. Utah contains unique analogs of microbial hydrocarbon reservoirs in the modern Great Salt Lake and the lacustrine Tertiary (Eocene) Green River Formation (cores and outcrop) within the Uinta Basin of northeastern Utah. Comparable characteristics of both lake environments include shallowwater ramp margins that are susceptible to rapid widespread shoreline changes, as well as compatible water chemistry and temperature ranges that were ideal for microbial growth and formation/deposition of associated carbonate grains. Thus, microbialites in Great Salt Lake and from the Green River Formation exhibit similarities in terms of the variety of microbial textures and fabrics. In addition, Utah has numerous examples of marine microbial carbonates and associated facies that are present in subsurface analog oil field cores.
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Cram, Jana, Mary Levandowski, Kaci Fitzgibbon i Andrew Ray. Water resources summary for the Snake River and Jackson Lake Reservoir in Grand Teton National Park and John D. Rockefeller, Jr. Memorial Parkway: Preliminary analysis of 2016 data. National Park Service, czerwiec 2021. http://dx.doi.org/10.36967/nrr-2285179.

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This report summarizes discharge and water quality monitoring data for the Snake River and Jackson Lake reservoir levels in Grand Teton National Park and John D. Rockefeller, Jr. Memorial Parkway for calendar year 2016. Annual and long-term discharge summaries and an evaluation of chemical conditions relative to state and federal water quality standards are presented. These results are considered provisional, and may be subject to change. River Discharge: Hydrographs for the Snake River at Flagg Ranch, WY, and Moose, WY, exhibit a general pattern of high early summer flows and lower baseflows occurring in late summer and fall. During much of 2016, flows at the Flagg Ranch monitoring location were similar to the 25th percentile of daily flows at that site. Peak flows at Flagg Ranch were similar to average peak flow from 1983 to 2015 but occurred eleven days earlier in the year compared to the long-term average. Peak flows and daily flows at the Moose monitoring station were below the long-term average. Peak flows occurred four days later than the long-term average. During summer months, the unnatural hydro-graph at the Moose monitoring location exhibited signs of flow regulation associated with the management of Jackson Lake. Water Quality Monitoring in the Snake River: Water quality in the Snake River exhibited seasonal variability over the sampling period. Specifically, total iron peaked during high flows. In contrast, chloride, sulfate, sodium, magnesium, and calcium levels were at their annual minimum during high flows. Jackson Lake Reservoir: Reservoir storage dynamics in Jackson Lake exhibit a pattern of spring filling associated with early snowmelt runoff reaching maximum storage in mid-summer (on or near July 1). During 2016, filling water levels and reservoir storage began to increase in Jackson Lake nearly two weeks earlier than the long-term average and coincident with increases in runoff-driven flows in the Snake River. Although peak storage in Jackson Lake was larger and occurred earlier than the long-term average, minimum storage levels were similar to the long-term average.
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McMechan, M. E. Geology, Spray Lakes Reservoir, Alberta - British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2012. http://dx.doi.org/10.4095/288954.

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Schindler, E. Arrow Lakes Reservoir Fertilization Experiment, Technical Report 1999-2004. Office of Scientific and Technical Information (OSTI), luty 2007. http://dx.doi.org/10.2172/963291.

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Fickeisen, Duane H., i David R. Geist. Resident Fish Planning: Dworshak Reservoir, Lake Roosevelt and Lake Pend Oreille. Office of Scientific and Technical Information (OSTI), styczeń 1994. http://dx.doi.org/10.2172/10129389.

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Schindler, E. Arrow Lakes Reservoir Fertilization Experiment; Years 4 and 5, Technical Report 2002-2003. Office of Scientific and Technical Information (OSTI), luty 2007. http://dx.doi.org/10.2172/963292.

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Gorlacheva, E. P. Gorlacheva E. P. The ichthyofauna of cooling water reservoir-coolers of Zabaykalsky krai: lake Kenon and Haranorskoe reservoir. Published by V. I. Vernadsky Crimean Federal University, 2019. http://dx.doi.org/10.18411/2414-4738-2019-18-118-124.

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Griffith, Janelle R., i Amy C. McDowell. Measurement of Lake Roosevelt Biota in Relation to Reservoir Operations : Appendices 1992. Office of Scientific and Technical Information (OSTI), styczeń 1996. http://dx.doi.org/10.2172/352908.

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Shelley, John, i Paul Boyd. Reservoir sediment management workshop for Milford Lake in the Kansas River basin. Coastal and Hydraulics Laboratory (U.S.), sierpień 2017. http://dx.doi.org/10.21079/11681/22927.

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Griffith, Janelle R., Amy C. McDowell i Allan T. Scholz. Measurement of Lake Roosevelt Biota in Relation to Reservoir Operations; 1991 Annual Report. Office of Scientific and Technical Information (OSTI), sierpień 1995. http://dx.doi.org/10.2172/119924.

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