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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 378 for “"Eutrophication"”.
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Monitoring eutrophication in the Vaal Dam using satellite remote sensing
… is experiencing ecological problems related to eutrophication. The dam supplies water for domestic, industrial, mining and agricultural usage. This research aims to assess and monitor the threats of eutrophication and cyanobacterial blooms within the Vaal Dam. A 10-year archive of remotely …
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Measurements and modelling of eutrophication processes in Lake Rotoiti, New Zealand
Deterioration of water quality is a common problem for aquatic systems globally, which is accelerated by factors such as urban settlement, farming, forestry and recreation. Spatial variability of water quality in these systems hinders a more advanced understanding of their dynamics, to better …
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Implementation of three-dimensional eutrophication model of Bubbly Creek, Chicago, Illinois
… contaminants, but a detailed three-dimensional eutrophication model for Bubbly Creek has never been established due to constraints in computational power. With the development of high speed computers and advancement in parallel programming, computational power has increased dramatically, and is …
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Organic Phosphorus Dynamics and Contributions to Eutrophication in a Shallow, Freshwater Bay
Phosphorus (P) is essential for aquatic life; cycling between both inorganic and organic forms to maintain an ecological balance. Its addition into P-scarce freshwaters, either through terrestrial (external) or sedimentary (internal) loading, may disrupt this balance causing blooms of phytoplankton …
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Holocene guano influences on eutrophication and lacustrine ecology at Kettle Lake, North Dakota
… are valuable as an analog to human-driven eutrophication of surface waters in the Northern Great Plains and indicate that agriculture expansion and intensive animal feeding operations could significantly alter the nitrogen cycle of nearby surface waters.
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Load reduction and invasive mussel effects on eutrophication dynamics in Saginaw Bay, Lake Huron
… load reductions and invasive mussels affecting eutrophication dynamics in lake ecosystems.</p>
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Acidification and eutrophication of forests on sandy soil: effects of forest type and deposition load
Forests on sandy soil did clearly acidify during the past decades, what was found to be related to high depositions of potentially acidifying compounds to the forest floor. Several factors are a stimulus for high atmospheric deposition load in these types of forest ecosystems. (1) Forests are often …
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Applications of Reservoir Limnology Theory and Steady-State Modeling to Eutrophication Management in Beaver Lake, Arkansas
<p>Reservoir limnology theory predicts that phytoplankton biomass (PB) is greatest in riverine-transition zones and least in lacustrine zones leading to an inverse pattern in water clarity. These theoretical patterns were utilized to create a statistical model of chlorophyll-a (Chl-a), an indicator …
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Limnological investigations of a natural, subalpine lake in the early stages of eutrophication: Mountain Lake, Giles County, Virginia
… Mountain Lake is entering the early stages of eutrophication. Continuation of increasing nutrient loads in this natural lake will potentially further shift this ecosystem toward eutrophic conditions.
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Eutrophication Assessment for Lyndon B. Johnson Lake, a Subtropical Reservoir in Central Texas: Impacts from Urbanization and Upstream Sources
… this study was to determine the cause(s) of the eutrophication through analysis of a long-term data base of Lake LBJ, between the years 1982-2016. Statistical techniques were applied to data from six stations over the length of the reservoir, to evaluate spatial and temporal variations in …
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Partitioning the influence of anthropogenic and oceanic nutrient fluxes in the coastal ocean, and the question of cultural eutrophication
A multi-disciplinary study was implemented in the mid 1990’s in order to address concerns about apparent increases in the frequency and magnitude of marine phytoplankton blooms along the eastern Australian coast off New South Wales. This coastal region is frequently impacted by the western boundary …
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The threat to South African water security posed by wastewater-driven eutrophication: a proposal for a new regulatory approach
… potable water resources is severely impacted by eutrophication (nutrient enrichment). As much as two-thirds of the reservoir impounded resource may be affected. Wastewater effluents and/or the integration of wastewater return flows as part of the water balances of many reservoirs constitute the …
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Benthic and pelagic responses to endobenthic bioturbator (Kraussillichirus kraussi) density, temperature and eutrophication in a global change mesocosm experiment
… threatened by global change stressors such as eutrophication and warming, which can impair ecosystem functioning and ultimately affect societal well-being. Addressing this challenge, in part, requires identifying and understanding mechanisms that may enhance ecosystem resilience to global …
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The Potential for Eutrophication Mitigation from Aquaculture of the Native Oyster, Crassostrea virginica, in Chesapeake Bay: Quantitative Assessment of an Ecosystem Service
… as a policy initiative for Chesapeake Bay eutrophication mitigation. Molecular approaches and direct abundance measures have improved our understanding of the sediment microbial community response to oyster biodeposition. Overall, sediments impacted by oyster biodeposition had a …
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Carbon metabolism and dissolved organic carbon (DOC) fluxes on seagrass communities: insights from plant colonization states, eutrophication and global change related factors
Coastal vegetated communities are among the most productive ecosystems on Earth. Their role in the global carbon cycle and how they cope with global change may be more relevant than previously believed. They export large quantities of matter, both in particulate and dissolved forms to adjacent …
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Hypoxia and eutrophication - a closer look at the water quality problems facing the Chicago area waterway system (CAWS) through a 3-D environmental fluid dynamics model
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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The Utility of Microfossils in Geoarchaeology: A Case Study from Lake Simcoe, Ontario and Methodological Considerations
Eutrophication has been an issue in Lake Simcoe since the 1970s, stressing aquatic wildlife, notably economically-important cold water fish. Non-pollen palynomorphs (NPP) are more sensitive proxies of water quality than sedimentary phosphorus, and have a higher fossilization potential than …
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Quantifying the Ecosystem Metabolism of a Tidal Estuary as a Consequence of Aeration
… Chapter 1 explains the causes and effects of eutrophication, with an emphasis on the connection between hypoxia and eutrophication. In chapter 2, we describe an experiment focused on quantifying the ecosystem metabolism in a tidal, eutrophic estuary where engineered aeration has been …
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The Combined Effect of Ocean Acidification and Euthrophication on water pH and Aragonite Saturation State in the Northern Gulf of Mexico
… in massive algal blooms, a process known as eutrophication. Microbial consumption of this organic matter depletes bottom waters of oxygen and increases acidity through the release of CO2. This study assesses the synergistic effect of ocean acidification and eutrophication in the coastal ocean …
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