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 11 of 11 for “"nutrient budgets"”.
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Regional Nutrient Budgets in Forest Soils in a Policy Perspective
… from ecological and social perspectives. Nutrient sustainability is essential to maintain the production capacity and reduce the effects of acidification and eutrophication. Nutrient sustainability is strongly affected by anthropogenic influences such as air pollution and forestry …
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Near-surface hydrology and hydrochemistry under contrasting land-cover
… an in-depth understanding of the water and nutrient cycle. On this basis we compared the involved hydrological pathways for rainfall to reach streams and the nutrient budgets of a tropical rainforest and a pasture. In addition we studied the links of hydrochemical differences to differences …
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Nutritional contribution of atmospheric deposition to the Strandveld vegetation of West Coast South Africa Justine Muhoro Nyaga.
Ecosystem nutrient availability depends on the balance between rates of nutrient inputs and losses. Nutrients may be lost through fire and displacement of ash, herbivory, leaching and volatilization. The main pathways through which nutrients may be acquired are weathering of rock and atmospheric …
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The Eutrophic Status of Ten Central Iowa Lakes
… employing more frequent samplings and including nutrient budgets and turnover to aid in developing a plan to improve water quality.
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Drivers And Dynamics Of Harmful Algal Blooms: Understanding Nitrogen Fixation And Bloom Composition In Minnesota Temperate Lakes
… by driving biogeochemical processes, regulating nutrient cycling, and maintaining ecosystem stability. Among these microbial communities, harmful algal blooms (HABs), dominated by cyanobacteria capable of producing toxins, have emerged as a growing environmental concern due to their impacts on …
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Mechanisms of nutrient limitation and nutrient acquisition in managed and unmanaged forest ecosystems
… the results of several investigations into nutrient acquisition processes in the forests of New Hampshire. I begin with a meta-analysis of fertilization studies showing that phosphorus (P) and calcium (Ca) as well as nitrogen (N) may limit primary production in deciduous forests of the …
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The effects of forest disturbance on stream stability
… streams to retain particulate organic matter and nutrients during storms. I hypothesized that forest streams are least stable during the intermediate stages of forest succession because particulate organic matter accumulations in streams are lowest at that time. This hypothesis was tested by …
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An Analysis of the Ecology and Public Perception of Coarse Woody Debris in Virginia
… wildlife, fish, and plants and is important in nutrient cycling and soil formation. Knowledge of the volume, distribution, and use of CWD across Virginia would be useful to forest managers modeling nutrient budgets in southeastern forests and is important to wildlife management efforts. …
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The Oceanography and Modelling of the Pontevedra Ria (NW Spain)
… dependent on freshwater inputs and upwelling of nutrient-rich East North Atlantic Central Water from the shelf. Intrusions of the Poleward Current were also detected during winter. A stratified box model approach predicted that upwelling water fluxes into the ria of 2-4x10³ m³ s-1, of which >30% …
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Particle Fluxes in the North-East Atlantic and Southern Ocean
… of export based on 234Th and nutrient budgets. The vertical fluxes of 234Th into the<br/>traps were less than those estimated from the 234Th water column budget, which is interpreted to<br/>be the result of previous export events removing 234Th from the water column and the …
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Quantification of Nitrate Sources and Sinks Using a Water Quality Network in Morro Bay Estuary, California
<p>Using an instrumented water quality network in Morro Bay Estuary, California from 2007 to 2010 (15 min sampling frequency), this study addressed the two objectives of constructing a nitrate budget and assessing the influence of sampling frequency on water quality parameters. These two objectives …