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Dissertations / Theses on the topic 'River systems'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Rushworth, Alastair M. "Flexible regression for river systems." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5267/.

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Maintaining river health is of vital importance to the human populations that depend on them for drinking water, and for the income generated from industry and leisure activities. The key to a clear understanding of the current state of the river environment lies in assimilating the various data that are available for a particular river catchment. As a result of the large expense involved in extensive data collection programmes, measurements are often only taken at a handful of monitoring locations, resulting in large portions of a river network remaining unmonitored and rendering it difficult

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2

Langham, Joseph Anthony. "Self organisation in braided systems : DEM analysis of the River Feshie, Scotland." Thesis, University of Hull, 2004. http://hydra.hull.ac.uk/resources/hull:8093.

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3

Andrews, Matthew B. (Matthew Bryan) 1981. "Natural attenuation of organophosphates in river systems: Chattahoochee River case study." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/30138.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004.<br>Includes bibliographical references.<br>Three organophosphoric acid triesters, tributyl phosphate (TBP), tris(2-chloroethyl) phosphate (TCEP), and tris(2-butoxyethyl) phosphate (TBEP) have been detected in surface waters across the world, primarily the result of sewage treatment plant discharge. Despite concentrations as low as a few parts per trillion, there is growing concern over the potential impact these compounds can have on human and environmental health. This study is an atte

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4

PORETTI, ILARIA. "Flood hazard analysis for river systems." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2011. http://hdl.handle.net/10281/19730.

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Flood hazard assessment and mapping is a necessary step to define flood risk reduction strategies and to develop risk management plans. Anyway, in Italy, and in particular in Lombardy Region, legislation provides only vague indications on how to assess flood hazard, therefore the definition of risk is lacking in a scientific basis, and wide space is left to subjectivity and to approximate analyses. This PhD research aims to improve the topic presenting an approach for flood hazard analysis and mapping that fits the Lombardy Region legislative framework, but introduces a level of experimental m

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5

Hattingh, Keaton Jade. "Geomorphological controls on pool formation and pool persistence in non-perennial river systems." University of the Western Cape, 2020. http://hdl.handle.net/11394/7739.

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>Magister Scientiae - MSc<br>Globally climate variability and anthropogenic effects are causing more perennial rivers to become non-perennial rivers. Non-perennial rivers are distinguished by their isolated pools which serve as refugia for aquatic organisms, water birds, and riparian vegetation. The literature on non-perennial rivers demonstrates that pools are poorly understood in terms of their location, nature, and geomorphic persistence. Therefore, this study examines the relationships between the spatial distribution, morphology, and substrate characteristics of pools in reaches of the Pr

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6

Jenkins, William Owen. "Decision support systems in river basin management." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47123.

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7

Visser, Alwyn Jacobus Christiaan. "Real-time management of river systems by using a hydrodynamic model with optimisation." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5438.

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Thesis (MScEng (Civil Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: In this research a Real-Time hydrodynamic optimisation model of the Orange-Fish-Sundays River (OFS) system which uses real-time data in order to forecast release hydrographs, is evaluated. The OFS system stretches over three catchment areas in the Eastern Cape namely Great Fish, Little Fish and Sundays Rivers. The OFS supplies water from the Orange River through a 800 km system of canals, tunnels, dams and rivers to registered water users in this area. In order to cope with increasing pressures on wate

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8

Busuttil, Marie. "Hydro power scheduling in multi-owner river systems." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10009.

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9

Silveira, André Filipe. "Polycentricity and the adaptive capacity of river basin governance systems : insights from the River Rhine and the Pearl River (Zhujiang)." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708546.

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10

Parsons, Melissa, and n/a. "Scales of macroinverterbrate distribution in relation to the hierarchical organisation of river systems." University of Canberra. Science & Design, 2001. http://erl.canberra.edu.au./public/adt-AUC20061113.150809.

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The distribution of macroinvertebrate communities is influenced by a myriad of abiotic environmental factors. However, many of these environmental factors do not occur randomly within a river system. Rather, they occur as a result of geomorphological processes that operate hierarchically to constrain the expression of environmental factors at successively nested levels. As a result of the hierarchical expression of geomorphological processes, environmental factors occur at characteristic scales within a river system and can be used to define spatial scales of river system organisation. Previou

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11

Furse, Michael T. "The faunal richness of headwater streams." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286013.

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12

Macdonald, Amy. "Does Light Control Algal Abundance in Large River Systems?" VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1622.

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A limited amount of research has been done to investigate the factors influencing algal abundance in large river systems. This study examines light as the primary factor that controls algal abundance in the Upper Mississippi, Missouri and Ohio Rivers. Data were collected for 2004 in conjunction with the Environmental Monitoring Assessment Program- Great River Ecosystems EMAP-GRE project using EPA approved methods. Chlorophyll a concentrations were 34.6 µg•L-1 in the Upper Mississippi, 19.8 µg•L-1 in Missouri River and 9 µg•L-1 in the Ohio River for 2004. Chlorophyll a concentrations were s

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13

Summerside, Scott Evan. "Systems analysis of upper San Pedro River Basin conflicts." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/192127.

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A potential for conflict exists over water management and allocation in the Upper San Pedro River Basin. Competing demands for limited water supplies have resulted in concerns about the depletion of the ground-water supplies, reductions in stream flow, and downstream obligations associated with the Gila River Adjudication. A network flow model is an effective tool for analyzing the nature of these water conflicts and evaluating how the introduction of new management strategies can ameliorate the problems. Analysis of water management reveals that concerns about the water problems are valid. Ir

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14

Kneis, David. "A water quality model for shallow river lake systems and its application in river basin management." Phd thesis, [S.l.] : [s.n.], 2007. http://opus.kobv.de/ubp/volltexte/2007/1464.

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15

Gomes, Daniel Dantas Moreira. "Gis applied to analysis and zoning systems environment of the river MundaÃ River Basin - PE / AL." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17248.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>Given the population growth, technological development and the increasing demand for natural resources becomes clear the importance of the rational and sustainable use of these resources, mainly in the Northeast region of Brazil, which has a major imbalance between supply and demand water and suffer with various problems related to inappropriate land use. Analysis and zoning of different environmental systems, aided by geoprocessing tools, serve as input for land use planning, allowing knowledge and a better use of the potential en

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16

IVANOVA, OLGA. "Development of Decision Support System for Optimization of Dams’ Management on Complex River Systems." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/1010257.

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The thesis presents a complex approach for modelling of a complex reservoir systems for water drainage management. The model has been built over a segment of a river with a certain parameters of water inflow, water outflow, required power production and max possible flood occurrence. Then the segments may be replicated with specific parameters to simulate whole system of the river. The model has been optimized in order to obtain the water drainage operation policy with regards of current and expected water volumes in the reservoirs ratio, required power production revenue, and minimal flood oc

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17

Kerr, Jason Grainger. "The Transformation of Catchment Phosphorus in Dry Subtropical River Systems." Thesis, Griffith University, 2009. http://hdl.handle.net/10072/366275.

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Phosphorus (P) derived from catchment sources is a key factor in the eutrophication of many aquatic ecosystems. Increasingly the protection of receiving waters has been focused on improving water quality through changing land management to decrease the supply of nutrients from the catchment. Rivers are an important link between management actions in the catchment and water quality downstream and therefore an understanding of P dynamics in river systems is central to describing and predicting P fluxes through the catchment. Much of the knowledge about P transformations and transport in rivers c

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18

Ramos, Eunice Pereira. "Energy systems analysis of transboundary river basins in a nexus approach: the Sava river basin study case." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15833.

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Mestrado em Sistemas Energéticos Sustentáveis<br>Resource management policies are frequently designed and planned to target specific needs of particular sectors, without taking into account the interests of other sectors who share the same resources. In a climate of resource depletion, population growth, increase in energy demand and climate change awareness, it is of great importance to promote the assessment of intersectoral linkages and, by doing so, understand their effects and implications. This need is further augmented when common use of resources might not be solely relevant at nationa

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19

Banda, Vincent Santos Dzulani. "Assessing hydrogeological characteristics to establish influence of aquifer-river interaction in non-perennial river systems, Heuningnes catchment." University of the Western Cape, 2019. http://hdl.handle.net/11394/7007.

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>Magister Scientiae - MSc<br>Over half of total flows in the global river network are composed of non-perennial rivers. This indicates the importance of non-perennial river systems in supporting the biodiversity. It has been established that groundwater is one of the elements that control the flow regimes and classification (whether perennial or not) of a river system. However, the use of hydrogeological characteristics to establish the influence of groundwater on non-perennial river systems remain to be widely unpublished. This study, therefore, intends to conceptualize and explain the role o

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20

Momoh, Jinnah Samuel. "Decision support system for river water quality forecasting and management." Thesis, University of Newcastle Upon Tyne, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246651.

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21

Linke, Simon, and n/a. "River conservation planning: accounting for condition, vulnerability and connected systems." University of Canberra. Resource, Environmental & Heritage Sciences, 2006. http://erl.canberra.edu.au./public/adt-AUC20070716.155500.

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Conservation science in rivers is still lagging behind its terrestrial and marine counterparts, despite increasing threats to freshwater biodiversity and extinction rates being estimated as five times higher than in terrestrial ecosystems. Internationally, most protected rivers have been assigned reserve status in the framework of terrestrial conservation plans, neglecting catchment effects of disturbance. While freshwater conservation tools are mainly index based (e.g. richness, rarity), modern terrestrial and marine conservation planning methods use complementarity-based algorithms - proven

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22

Guven, Basak. "Modelling the growth and movement of cyanobacteria in river systems." Thesis, University of Reading, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428865.

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23

Gibbs, Helen Margaret. "The interactions between macrophytes and sediments in urban river systems." Thesis, Queen Mary, University of London, 2013. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8480.

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Many urban rivers receive significant inputs of metal-contaminated sediments from their catchments. Their restoration has the potential to increase the deposition and accumulation of these sediments from greater sediment supply and increased channel hydraulic complexity, creating a store of metals which could have negative impacts upon ecosystems and human health. Macrophytes often establish in restored channels and have the potential to stabilise these sediments and uptake metals through processes of phytoremediation, thus reducing the risk of the accumulated sediments becoming a source of me

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24

Osei-Twumasi, Anthony. "Integrated modelling studies of solute transport in river basin systems." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54991/.

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Surface water and groundwater systems are linked dynamically in reality as the one generally impacts directly on the other. Traditionally, however, these two water bodies have more often than not been treated as different entities by water managers and other professionals. The issue of the compartmentality of these two resources is the main focus of the study described herein. In this study, an existing 1D-2D hydro-environmental surface water model that includes a groundwater model (DIVAST-SG) has been extended to 2-D and refined through testing against three laboratory studies. A surface wate

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25

Alruzuq, Ali Rashed. "SOCIO - HYDROLOGY OF LEVEE SYSTEMS ALONG THE LOWER ILLINIOS RIVER." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/theses/2315.

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Levee safety inspections performed in the U.S. under Public-Law 84-99 administered by the U.S. Army Corps of Engineers (USACE) have found ~36% of the participating levee systems have an unacceptable safety rating. This suggests a substantial number of levee systems are not able to keep up with their maintenance. This study seeks to explore if there are differing socioeconomic characteristics between levee systems with acceptable verses unacceptable levee safety ratings to try and assess what characteristics make a system more likely to be sustainable (i.e., possessing an acceptable levee safe

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26

Fasolato, Giacomo. "Simplified models for morphological evolution of river and lagoon systems." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425058.

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Morphodynamics of sedimentary systems is nowadays a fundamental piece of knowledge for civil and environmental engineers involved in fluvial and lagoonal interventions. While morphodynamics is in principle an extremely complex discipline, some fundamental results may be achieved with relatively simple models. Purpose of the present dissertation is providing an analysis of a number of simplified models, discussing the usefulness of their approach and the limits of their applications. The entire study is especially on the analytical and numerical analysis of simplified one-dimensional formula

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27

Trinci, Giuditta. "Spatial organisation of ecologically relevant high order flow properties and implications for river habitat assessment." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/30951.

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The turbulent properties of flow in rivers are of fundamental importance to aquatic organisms yet are rarely quantified during routine river habitat assessment surveys or the design of restoration schemes due to their complex nature. This thesis uses a detailed review of the literature to highlight the various ways in which plants and animals modify the flow field, how this can deliver beneficial effects; and how turbulence can also generate threats to growth and survival. The thesis then presents the results from detailed field assessments of turbulence properties undertaken on low, intermedi

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28

Sill, Paul E. (Paul Eric). "Assessing Regional Gully Erosion Risk: A Remote Sensing and Geographic Information Systems Approach." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc332453/.

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Gully erosion has been established as a major source of sediment pollution in the upper Trinity River watershed in north-central Texas. This fact, along with a lack of models appropriate for a large-area gully erosion analysis established a need for a gully erosion study in the upper Trinity basin. This thesis project attempted to address this need by deriving an index indicative of gully erosion risk using remote sensing and geographic information systems (GIS) methodology. In context of previous field studies, the coarse spatial resolution of the input GIS data layers presented a challenge t

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29

Buckley, Mark C. "The problem of restoring natural systems among social systems : strategic considerations and the Sacramento River /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2007. http://uclibs.org/PID/11984.

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30

Buckley, Mark C. Buckley Mark C. "The problem of restoring natural systems among social systems : strategic considerations and the Sacramento River /." Digital Dissertations Database. Restricted to UC campuses, 2007. http://uclibs.org/PID/11984.

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31

Banerjee, Malini De. "High-Frequency Nitrate Monitoring in Dynamic River Systems: the Case of Three Iowa Rivers in the Mississippi Basin." Diss., University of Iowa, 2013. https://ir.uiowa.edu/etd/4818.

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High frequency water quality monitoring presents unique and unlimited opportunities of exploring spatio-temporal variation in water quality. Knowledge gained from analyzing high frequency water quality data can provide more clarity regarding transportation and processing of water constituents over time and space and scale. This study analyzes high frequency discharge, nitrate load and concentration data for three watersheds of different sizes - Cedar River Watershed, North Raccoon and Middle Raccoon. Each of these sites were monitored for 2-3 calendar years. Sudden spikes in discharge, nitrate

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32

Carini, Giovannella, and n/a. "Effects of Contemporary and Historical Processes on Population Genetic Structure of Two Freshwater Species in Dryland River Systems (Western Queensland, Australia)." Griffith University. Australian School of Environmental Studies, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050113.081250.

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Arid and semiarid river systems in Western Queensland, Australia, are characterized by the unpredictable and highly variable nature of their hydrological regimes as a result of the episodic nature of rain events in the region. These dryland rivers typically experience episodic floods and extremely low or no flow periods. During low or no flow periods, water persists only in relatively wide and deep sections of the river channels, which are called 'waterholes'. These isolated waterholes serve as refugia for aquatic species during protracted intervals between floods. In such discontinuous riveri

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33

Carini, Giovannella. "Effects of Contemporary and Historical Processes on Population Genetic Structure of Two Freshwater Species in Dryland River Systems (Western Queensland, Australia)." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367070.

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Arid and semiarid river systems in Western Queensland, Australia, are characterized by the unpredictable and highly variable nature of their hydrological regimes as a result of the episodic nature of rain events in the region. These dryland rivers typically experience episodic floods and extremely low or no flow periods. During low or no flow periods, water persists only in relatively wide and deep sections of the river channels, which are called 'waterholes'. These isolated waterholes serve as refugia for aquatic species during protracted intervals between floods. In such discontinuous riveri

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34

Marttila, M. (Maare). "Ecological and social dimensions of restoration success in boreal river systems." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526217253.

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Abstract The degradation of rivers and streams has led to world-wide efforts to restore freshwater habitats. A good understanding of the social-ecological context is considered key to successful restoration. In this thesis, a multidisciplinary framework was applied to study ecological and social dimensions of restoration success. First, the long-term performance of in-stream restoration measures was examined by conducting repeated cross-sectional surveys in restored streams up to 20 years post-restoration. Next, nationwide electrofishing data were used to assess the density responses of juveni

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35

Sabater, Liesa Laia. "Disentangling the complexity of chemical and physical stressors impacting river systems." Doctoral thesis, Universitat de Girona, 2021. http://hdl.handle.net/10803/671769.

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Humanity has always been closely linked to rivers, benefiting from their resources while producing impacts associated with their activity.Thus, river systems have been exposed to multiple stressors, which have affected the quality of water and their biological communities, such as those attached to substrata (biofilms) or those that are suspended in water (phytoplankton). On the other hand, biological communities also respond and contribute to the transformation and/or degradation of certain anthropogenic organic compounds, such as pharmaceuticals. This thesis investigates the chemical state o

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36

Howell, Timothy David. "Fish Responses to the Introduction of Structural Woody Habitat in Two Coastal Rivers in New South Wales, Australia." Thesis, Griffith University, 2009. http://hdl.handle.net/10072/365396.

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The declining condition of river systems associated with rapid development of human societies has lead to substantial reductions in the distributions and populations of many freshwater fish. One consequence of the general decline in river condition has been the loss of in-stream Structural Woody Habitat (SWH). Structural woody habitat is now widely recognised as an important component of stream ecosystems, particularly as fish habitat. As a result, there has been an increase in the number of rehabilitation programs that introduce SWH into rivers globally, and in Australia. However, most rehabi

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37

Tashev, Azamat. "Understanding Ecosystem Services through Organizational Analysis: Application to the Truckee-Carson River System." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1515072255449453.

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38

Hollis, Lucy. "Cretaceous porphyry magmatic-hydrothermal systems in the Tchaikazan River area, southwest B.C." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/15291.

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The Hub, Charlie and Northwest Copper are spatially related mineral showings (Cu ± Mo) located in the Tchaikazan River area of southwest British Columbia. The Tchaikazan River area is located on the boundary between the Intermontane Belt and southeast Coast Belt (SECB). Evidence of magmatic-hydrothermal alteration is preserved throughout the study area. Multiple episodes of magmatic-hydrothermal activity are associated with these three centres of porphyry-style mineralization. The Hub diorite is the oldest dated pluton in the area, with a U-Pb zircon emplacement age of 81.19 ± 0.78 Ma. ZFT/AFT

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39

Gray, Andrew. "Sediment transport and sedimentation dynamics in small mountainous, dry-summer river systems." Thesis, University of California, Davis, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3637835.

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<p> Fluvial suspended sediment is a master variable affecting a wide range of fluvial and coastal environmental processes, and dominating the terrestrial mass flux to the oceans. Although it has long been recognized that relationships between suspended sediment concentration and discharge are not stationary in small, mountainous rivers over time scales from hours to decades, most studies continue to assume stationarity. This collection of studies directly addresses the issue of non-stationarity in the suspended sediment –discharge relationship of the Salinas River, central California,

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40

Hill, Gemma. "Investigating wastewater treatment plant impact on antibiotic resistance within UK river systems." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/88822/.

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Antimicrobial resistance (AMR) presents one of the most important threats to human health of the 21st century. The recent report on AMR predicted that by 2050 10 million deaths a year will be directly attributable to AMR bacterial infections. The dissemination of antibiotic resistance genes (ARG) in to the environment has previously been highlighted as an important route of transmission and was investigated in the current study. Wastewater treatment plants (WWTP) have been highlighted to contribute to ARG pollution of rivers focusing on effluent impact on receiving water bodies. In this study

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Long, Nguyen Tien. "Sustainabilty assessment of vegetable cultivation systems in the Red River Delta, Vietnam." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2013. http://dx.doi.org/10.18452/16763.

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Zur Einschätzungen und Bewertung der Nachhaltigkeit der gegenwärtigen Gemüseproduktion im Roten-Fluss-Delta, Vietnam, erfolgten empirische Untersuchungen zur Ermittlung und Bewertung eines Nachhaltigkeitsindex unter Nutzung verschiedener Lösungsansätze. Die Analysen und Einschätzungen wurden aus ökologischer ökonomischer und sozialer Sicht vorgenommen. Die erfassten Daten wurden unter Nutzung von zwei Methoden ausgewertet, der Mehr-Kriterien-Bewertungsmethode Analytic Hierarchy Process (AHP) und der Fuzzy Bewertungsmethode. In Workshops wurden mit den Farmern Präferenzen als Element der A

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Saunders, James Edward. "Measuring and understanding biogenic influences upon cohesive sediment stability in intertidal systems." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/868.

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43

Hardbattle, Carol. "Slope-channel connectivity for fine sediment transport in river systems : a national perspective." Thesis, University of Exeter, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410810.

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Müller, Maximilian Eckhard [Verfasser]. "Organic Micropollutants in Small River Systems – Occurrence, Fate and Effects / Maximilian Eckhard Müller." Tübingen : Universitätsbibliothek Tübingen, 2020. http://d-nb.info/1223451631/34.

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Yanagisawa, Masayuki. "Agroecological evaluation of the intensified cropping systems in the Red River Delta,Vietnam." Kyoto University, 2000. http://hdl.handle.net/2433/78117.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第8632号<br>農博第1159号<br>新制||農||814(附属図書館)<br>学位論文||H12||N3477(農学部図書室)<br>UT51-2000-R38<br>京都大学大学院農学研究科熱帯農学専攻<br>(主査)教授櫻谷哲夫, 教授天野高久, 教授小﨑隆<br>学位規則第4条第1項該当

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Neurath, Robert Carl. "Comparative Baseflow Hydrochemistry of Various Septic System Density Groups within the Yellow River Watershed, Gwinnett County, Georgia." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/geosciences_theses/9.

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Baseflow water chemistry between different septic system density groups was analyzed to understand how septic system usage impacts the water quality of the Yellow River Watershed located in Gwinnett County, Georgia. Seventy water samples were collected at baseflow conditions in the summer of 2006. The samples were analyzed for the abundance and distribution of chlorides, sulfates, nitrates, and specific conductance. Geographic Information Systems were used to determine sample collection sites, assign samples into density groups, and spatially analyze and display the results. Statistical method

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Sonnenberg, Rob. "Development of aquatic communities in high-altitude mine pit lake systems of west-central Alberta." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Geography, 2011, 2011. http://hdl.handle.net/10133/3106.

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Reclamation on the Cardinal River and Gregg River coal mines includes the construction of mine pit lakes connected to stream environments. Key physical, chemical and biological parameters of these “truck and shovel” lakes and their streams were investigated, and hypotheses regarding ecosystems and populations were tested. Findings include: Sphinx Lake and Pit Lake CD exhibit meromictic (partial-mixing) tendencies, but still function in a similar fashion to shallower, natural sub-alpine lakes. Elevated selenium concentrations as high as 16 ug/g (dry weight) were recorded in Rainbow trout (O

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Denson, Robyn L. "A conceptual methodology for studying the geoarchaeology of fluvial systems : with case studies from the Oklawaha River (Florida) and the River Earn (Scotland)." Thesis, University of St Andrews, 1995. http://hdl.handle.net/10023/15148.

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Abstract:

This thesis explores a conceptual methodology for studying archaeological sites in fluvial settings. The methodology stems from geoarchaeology, an approach to the past that focuses upon the geomorphic context of artifacts or the application of geological principles and techniques to the solution of archaeological problems. The paper will examine its application to fluvial systems in two different geomorphic environments, the Oklawaha River in Florida and the Earn River Valley in Scotland. In these different environmental settings, the geoarchaeological approach makes use of different kinds of

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49

Winterbottom, Sandra J. "An analysis of channel change on the Rivers Tay and Tummel, Scotland, using GIS and remote sensing techniques." Thesis, University of Stirling, 1995. http://hdl.handle.net/1893/2178.

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This thesis examines historical river channel change on a 12km study reach of the Rivers Tay and Tummel Scotland via the development of GIS and remote sensing techniques. Firstly, historical maps were combined using GIS rectification techniques in order to examine channel changes over the period 1755 to 1975. Secondly, also using GIS methodology, channel planforms as depicted in a series of aerial photographs were overlain to study recent channel change (1971 to 1994) including that caused by two major flood events. The study formed part of wider investigations into the hydrology and geomorpho

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50

Diop, Mariane. "The influence of weather systems on satellite rainfall estimation with application to river flow." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397102.

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