Global ETD Search
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 26 for “"River Ecosystem"”.
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Seasons in the Stream: River Ecosystem Phenology in a Changing Climate
… light availability and temperature. In small rivers, primary productivity often peaks opposite that of terrestrial ecosystems, where overhanging canopies shade the river channel impeding light reaching the water surface. The degree to which river primary productivity is affected by the …
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Assessing potential navigation impacts to the Kanawha river ecosystem: a modeling approach
An extensive study of the biota of the Kanawha River was integrated to examine the trophic basis of fish production and predict potential impacts of increased tow traffic at two sites in the Winfield Pool. Total standing stock and production of adult fish were estimated as 242 kg/ha and 188 …
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Trace metals in upper Susquehanna River ecosystem: environmental distribution, urban impacts, and interaction with sediment materials
… samples from the Upper Susquehanna River Basin [river water (RW) and bottom sediments, municipal wastewaters and sewage sludge, algae and fish] were collected and analyzed for the following Trace Metals (TMs), as appropriate: Pb, Cd, Co, Ni, Cr, Cu, Zn, and total and inorganic Hg. …
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Culture of flooding: Significance of landscape adaptation techniques of Majuli Island’s indigenous tribe in the context of a dynamic river ecosystem
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Developing a virtual approach to determine if ecosystem service provision differs between Scottish river corridors with and without nature designations
… survives because we are graced with nature, or ‘ecosystem services’. In a time of turbulence caused by climate change and increasing population, there is debate surrounding the extent to which areas protected for biodiversity can deliver ecosystem services. Subsequently, the overarching aim of …
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Impact of climate variability and human activities on water resources.
… human activities are significant contributors to ecosystem degradation and the availability of a basin's water resources. Climate change forecasts for the Mediterranean region this century reveal that rising temperatures, combined with less precipitation, have resulted in a 20% drop in water …
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Estrutura e função de comunidades de insetos aquáticos em um sistema fluvial de Mata Atlântica no sudeste brasileiro, com especial referência à avaliação do conceito de continuidade de rios (CCR)
… to the understanding of a middle-sized river ecosystem placed in the Atlantic Forest of southeastern Brazil. A brief review of some concepts about communities is presented. First, as well as the description of the major models that explain river ecosystem function, especially the River …
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Analyzing longitudinal patterns of river metabolism in five distinct rivers
The River Continuum and Serial Discontinuity Concepts are two common frameworks or theories to describe river ecosystem structure and function. While these concepts help explain how rivers should behave, the reality is that aquatic ecosystems are being changed and degraded due to dams which …
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Ecological minimalism: an approach for designing urban parks
… the test site is a portion of the Detroit riverfront, which serves disparate uses today: it is a busy entry to Canada, where several ports are operating extensively, and a series of parks and plazas along the riverfront provide recreational opportunities. However, the riverfront is wrought …
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Texas State University's San Marcos Campus Edwards Aquifer Groundwater Use Trends and Untapped Water Conservation Opportunities
… water supply and Spring Lake and the San Marcos River for non-potable water uses. The Edwards Aquifer provides water to over 2 million people regionally and is currently stressed as climate change and demand tests the regulatory flow protection measures established to sustain spring flows through …
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Locational and temporal patterns in microorganisms potentially affecting water quality in the Dan River system
River ecosystems across the US and globally face numerous stressors that impact both ecological function and water quality. In 2015-16, municipalities along the Dan River in southern Virginia experienced repeated taste and odor (TandO) issues in their drinking water that originated from the river …
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A pre-impoundment study of the biological diversity of the benthic macro-invertebrate fauna of the Sabie-Sand River system
… of South Africa and receives the flow of six rivers (Figure 0.1), all •of which originate outside the jurisdiction of the Park authorities. Thus, there are demands for water outside the boundaries of the KNP from other sectors of South Africa, as well as several self-governing states that have …
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River temperature behaviour in changing environments: trends, patterns at different spatial and temporal scales and role as a stressor
River/stream water temperature is one of the master water quality parameters as it controls several key iogeochemical, physical and ecological processes and river ecosystem functioning. Thermal regimes of several rivers have been substantially altered by climate change and other anthropogenic …
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An investigation of land-use impacts on water quality and algal communities in the Nottawasaga River and low-order streams of the Nottawasaga Valley Watershed
… have been a large influence on the Nottawasaga River ecosystem throughout history, but intensification of agricultural demands have put stress on surface water quality across the river network. In order to understand how ecosystem health may be impacted from current agricultural land-use, …
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Eco-hydro-morphodynamics and ecosystem services of near-natural river corridors
Near-natural river corridors (NNRs) provide crucial habitat for a host of biota and support the survival of people and nature worldwide at multiple spatiotemporal scales. Furthermore, NNRs represent fundamental references for river conservation, management, and restration, offering the opportunity …
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Invasive SIlver Carp (Hypophthalmichthys molitrix) Protein Hydrolysates- A Potential Source of Natural Antioxidant
… continue to spread over the Mississippi River causing a great concern for the river ecosystem due to their impact on native fish species. To minimize the negative effects of silver carp, many strategies were implemented including using it for animal feed, as fertilizers or simply …
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Hydropeaking in Alpine rivers: an ecosystem services approach
Rivers provide to society many important goods and benefits. Some of these ecosystem services depend on the river flow regime, which has been deeply modified by human structures and activities. These alterations have a direct influence on biodiversity, natural habitat and on the supply of river …
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A Riverine Ecosystem Service Cascade Model (RESCaM) framework for assessing ecosystem service provision as applied to English geomorphic river types
Riverine ecosystems are considered the lifeblood of the Earth and because of this, have been exploited for centuries for social, agricultural and industrial development, resulting in their environmental degradation and simplification. This has led to a shift in the natural processes and functions …
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Effects of Reservoir Releases on Slope Stability and Bank Erosion
… industrial, and agricultural uses, and the river ecosystem. However, riverbank stability has generally not been considered as a factor, even though release rates may have a significant effect on downstream riverbank stability. Riverbank retreat not only impacts land properties but also …
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