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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 222 for “"Nutrient cycling"”.
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Phosphate-mineral interactions and potential consequences for nutrient cycling
Biogeochemical cycling of phosphate is a key component in the overall production rate of coastal ecosystems. Mineral phases in the near-shore sediments play a significant role in the return of phosphate remineralized in the upper sediments to the water column. Sequential Extraction (SEDEX) of the …
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Phosphate-mineral interactions and potential consequences for nutrient cycling
Biogeochemical cycling of phosphate is a key component in the overall production rate of coastal ecosystems. Mineral phases in the near-shore sediments play a significant role in the return of phosphate remineralized in the upper sediments to the water column. Sequential Extraction (SEDEX) of the …
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Controls on terrestrial carbon and nutrient cycling in Arctic permafrost environments
… aims to determine the environmental controls on nutrient status and greenhouse gas exchange by assessing the relationships between environmental conditions, soil nitrogen availability, and greenhouse gas exchange under ambient and experimental conditions. At the Cape Bounty Arctic Watershed …
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Dynamics of Nutrient Cycling in Oak-Hickory Forests in Southern Illinois
Made available in DSpace on 2015-05-14T15:10:27Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7708914.PDF: 3467331 bytes, checksum: 769e521fad6c7d75046e6198ffbbdc7f (MD5) Previous issue date: 1976
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Nutrient Cycling in Microdose Fertilized West African Soils Under Indigenous Vegetable Production
… this ISFM technique affects yield, atmospheric nutrient losses, and soil properties in soils of two ecozones of SSA: i) the dry savanna (DS) (lna, Republic of Benin) and ii) rainforest (RF) (Ilesha, Nigeria) under cultivation with two indigenous vegetable species: local amaranth (Amaranthus …
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Quantifying nutrient cycling and fate within an abandoned feedlot and adjacent wetlands
… have resulted in elevated concentrations of nutrients in soils, surface water, and groundwater. Feedlot operations generate large quantities of manure and other waste, which when not managed properly can result in environmental problems. </p><p> It is hypothesized that nitrogen can cause a …
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Effect of winter cover cropping practices on maize yield and nutrient cycling
The Illinois Nutrient Loss Reduction Strategy has set Phase 1 reduction milestones for nitrate-nitrogen and total phosphorus of 15 percent and 25 percent, respectively, to the Mississippi River by the year 2025 with the ultimate goal of a 45 percent reduction for both nutrients when compared to …
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Soil Carbon and Nutrient Cycling Across Cover Types in Southern Appalachian Hardwood Forests
… determine fine scale soil respiration (Rs ) and nutrient dynamics among four distinct cover types, white oak (WO, Quercus alba L.), scarlet oak (SO, Quercus coccinea Muech.), chestnut oak (CO, Quercus montana Wild.) and a pine-oak co-dominant cover (PO, Pinus spp. and Quercus spp. (primarily …
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Nutrient Cycling Between Litters and Soil after Fire in Native Woodland and Pinus radiata Plantations
… These changes may affect the microbial biomass, nutrient availability and nutrient cycling, and may have flow on effects on soil carbon stocks and cycling. Post-fire effects may also affect success of established (re-sprouting) and recently recruited plants. In particular, changed organic matter …
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Benefits of Dung Beetles (Coleoptera: Scarabaeidae) on Nutrient Cycling and Forage Growth in Alpaca Pastures
… presence of these beetles would likely enhance nutrient cycling and pasture growth. However, it is important to remember that dung beetles are just one component of many found in a healthy grassland ecosystem, and the functions of these components are interrelated.
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The value of Mopane worms: quantifying ecosystem services in terms of nutrient cycling in semi-arid regions of Limpopo
… contribution of mopane caterpillars’ frass to nutrient cycling by determining the nitrogen mineralization rates of frass compared to that of mopane leaves. We used search engines such as African Journals Online (AJOL), Google Scholar, and Web of Knowledge. The online databases were searched …
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Ectomycorrhizal associations in tropical montane forest: insights into their influence on nutrient cycling and functional responses to soil fertility
… ectomycorrhizal networks that transfer water, nutrients or carbon, and (3) by altering ecosystem nutrient economies, thereby reducing the availability of limiting resources to competing species. After testing these three hypotheses I found no evidence for positive feedback on Oreomunnea …
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Carbon additions can improve nutrient cycling and fertilizer use efficiency for phosphorus and potassium in a corn-soybean rotation
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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The ecophysiological significance of insectivory as well as nitrogen and phosphorus availability to sundew nutrient cycling, growth, and success
The impact of nutrient addition on growth and nutrient accumulation in insectivorous plants was studied in field populations and greenhouse plantings. Drosera rotundifolia was studied in the field, and D. binata var. multifida and D. capensis were studied in long-established plantings in the …
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An Investigation into the Effects of an External Electron Acceptor on Nutrient Cycling at the Sediment-Water Interface of the Occoquan Reservoir
… reservoirs are often subject to accelerated nutrient enrichment from urban sources. Cultural eutrophication due to such enrichment requires the development of efficient management and remediation strategies to protect drinking water sources. This study investigates the effects of using …
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Nutrient Dynamics of Forest Communities in Central Illinois
Four separate investigations of nutrient cycling in forests were conducted at Robert Allerton Park, 7 km southwest of Monticello in east central Illinois. Research was conducted in the two dominant forest types of the region: (1) a floodplain community (Acer saccharinum dominant), and (2) an upland …
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The effect of simulated nitrogen deposition on growth and ecosystem functioning of managed P. patula plantation ecosystems in South Africa
… of future NO₃ and NH₄ deposition on growth and nutrient cycling in P. patula plantations growing on shale-derived soil. This study consists of a field and pot-grown seedling experiments, the former commencing in November 1995 and the latter in August 1996.
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