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 12 of 12 for “"particulate phosphorus"”.
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An evaluation of particulate phosphorus storage in an agricultural estuary
… led to the development of a fine sediment and particulate associated phosphorus budget in a typical agricultural estuary. Firstly, to explore catchment inputs, turbidity and flow were monitored continuously upstream of the freshwater/saline interface on the main stem channel of the south Devon …
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Insights Into Particulate Phosphorus Dynamics and toxic Algal Bloom Events From A 13-Year Sediment Trap Study In Santa Barbara Basin (CA)
… the marine environment, the bioavailability of phosphorus (P) can impact ocean fertility as well as the structure and distribution of phytoplankton communities. Particulate P is of special interest because it is the major mechanism for the transport of P to deep waters and is a source of P to …
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Factors influencing phosphorus losses in agroecosystems dominated by tile drainage
Phosphorus is an important macronutrient for crop production but phosphorus surpluses may be conveyed from diffuse sources to streams via surface runoff and artificial subsurface (perforated plastic pipes called tiles) drainage affecting the quality of receiving aquatic ecosystems. However, …
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Development of Environmental Tracers for Sediments and Phosphorus.
… transporting sediment bound contaminants such as phosphorus. The aim of this project was to develop a dual tracing method for both sediments and colloids in order to better represent the transport of phosphorus. The link between soil erosion and eutrophication resulting from phosphorus transport …
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Phosphorus biogeochemistry and models in estuaries: case study of the Southampton Water system
… and the major features of nutrients (nitrogen, phosphorus and silicon) and suspended particulate matter (SPM) thus obtained. Additionally phosphorus in pore waters, and the solid phase in sediments were measured. The forms of phosphorus in the solid phase of sediment (deposited and suspended) …
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Marine microbial intact polar diacylglycerolipids and their application in the study of nutrient stress and bacterial production
… phospholipids were a higher percent of total particulate phosphorus where phosphate was higher, ranging from 1-14%. Thus IP-DAGs can play not only a significant but also a dynamic role in defining planktonic nutrient needs and cellular C:N:P ratios in the environment. Additionally, microcosm …
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Marine microbial intact polar diacylglycerolipids and their application in the study of nutrient stress and bacterial production
… phospholipids were a higher percent of total particulate phosphorus where phosphate was higher, ranging from 1-14%. Thus IP-DAGs can play not only a significant but also a dynamic role in defining planktonic nutrient needs and cellular C:N:P ratios in the environment. Additionally, microcosm …
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Phosphorus Losses from Simulated Dairy Mangement Intensive Grazing Forage System
… conducted to evaluate how these systems affect phosphorus (P) loss from the Center through runoff and forage removal. The goal of this study was to investigate the effects of forage type and manure density on P levels in runoff from release plots that simulated a MIG dairy system. Two forage …
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Relating Land Use Factors to Phosphorus Runoff Concentrations within the Northrup Creek Watershed using GIS
… correlation between land use variables and total phosphorus concentrations in storm events, (2) the ability of land use variables in predicting storm event runoff phosphorus concentrations, and (3) identifies specific high and low risk areas of phosphorus contribution throughout Northrup Creek, a …
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Struvite Recovery From Source-Separated Urine Utilizing Fluidized Bed Technology
… management, water conservation, and an impending phosphorus fertilizer shortage. Municipal wastewater systems are designed to treat the combination of urine, feces and graywater produced in household applications. Urine accounts for 1% of wastewater by volume, but provides 70-90% of nitrogen, …
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Particulate fluxes in the subtropical convergence region and other marine environments of New Zealand
… and physical processes affecting modem particulate sedimentation in the vicinity of the Subtropical Convergence Zone, and the magnitude and composition of particulate fluxes within the Chatham Rise-Subtropical Convergence region. An overall conservative strategy was adopted for the …
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Phosphorus Requirement and Chemical Fate in Containerized Nursery Crop Production
Environmental contamination issues related to phosphorus (P) in surface waters substantiates the need to identify minimally-sufficient P fertilization amounts for production of containerized nursery crops and better understand the effect of routine amendments (i.e., dolomite [DL] and micronutrient …