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Showing 1 to 18 of 18 for “"nitrogen pollution"”.
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Carbon storage in grasslands : the impact of atmospheric nitrogen pollution
Atmospheric nitrogen deposition is a major threat to biodiversity and ecosystem service provision around the globe. It is known that nitrogen enrichment affects various chemical and biological processes involved in carbon cycling and storage in soil. This is especially significant as soil carbon …
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The science and politics of increasing nitrogen pollution from human activity : case study of the Aberjona watershed
The biogeochemical cycling of nitrogen has critical implications for all life on earth. The Haber-Bosch process (1909) paved the way for the industrial fixation of NH3 from unreactive atmospheric dinitrogen, a phenomenon previously restricted to the enzyme nitrogenase and to a lesser extent …
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A case study of investment in agricultural sustainability: adoption and policy issues for nitrogen pollution control in the Chesapeake Bay drainage
… water quality agencies. In particular, excess nitrogen loadings from agricultural production activities threaten water quality in the Bay. Questions have been raised about how effectively traditional BMPs can control nitrogen loss from crop production. This study examines agricultural nitrogen …
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Welfare Impacts of Alternative Public Policies for Environmental Protection in Agriculture in an Open Economy: A General Equilibrium Framework
… gains differ across policies and with the nitrogen reduction target. In addition, this dissertation shows that a two-part instrument (a combination of implementable market based policies which restrict crop production and encourage farmers to reduce applied nitrogen) can be used to reduce …
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The Solution In The Sea: New York recently legalized commercial kelp farming. Will it help solve the state's environmental and economic woes?
In 1985, an algae bloom, fueled by nitrogen pollution, transformed the Long Island Sound into a dead zone. Though the area has somewhat recovered, the people and marine life that rely on these waters still feel the impact decades later. Many are hoping that kelp farms can help. Kelp farming is a …
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Metabolic studies on the nitrophile yeast Rhodotorula glutinis DSBCA06
Nitrogen is the most abundant element in atmosphere and fundamental component of proteins, nucleic acids and other essential molecules. In the past century the industrial use of nitrogen compounds has grown exponentially causing widespread pollution. Nitrogen pollution has wide-ranging impacts …
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A Study on the Simultaneous Nitrification and Denitrification Process of a Membrane Aerated Bioreactor Augmented by BiOWiSH Aqua
<p>Nitrogen pollution is a growing problem that is detrimental to the environment and the economy. Traditional treatment of nitrogen is a multi-stage process, expensive, operationally intensive, and requires large land areas. This research studied the effects of BiOWiSH® Aqua (Aqua), a biological …
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The fate of anthropogenic nitrogen in a redox stratified pond: an isotopic approach
… biogeochemical effects accompanying increased nitrogen pollution. Cape Cod is home to roughly 1,000 ponds and lakes which play an important role in local ecosystems, but the cycling of nitrogen in these waters is not well understood. The goal of this research is to identify the major …
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Growth of Thoroughbreds fed Different Levels of Protein and Supplemented with Lysine and Threonine
… (ALB), creatinine (CREA), and plasma urea nitrogen (PUN). Effect of diet and time were evaluated by analysis of variance with repeated measures. No differences were found in physical measurements between the CS and LTS groups (ADG 0.8(0.4 kg/day, BC 4.9(0.05) for the observational period. …
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Performance, denitrification activity, and microbial community dynamics of denitrifying biofilters under fluctuating water level
… tile drainage systems is a significant source of nitrogen to coastal water bodies, causing water quality degradation. Denitrifying biofilters have been identified as a technology that reduces the export of nitrate from tile-drained fields. A better understanding of the microbial communities that …
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INTEGRATED TERRITORIAL APPROACH FOR SUSTAINABLE AGRICULTURE: NITROGEN MANAGEMENT AND SOIL CARBON SEQUESTRATION IN LOMBARDY REGION
… concerns, being partially responsible of nitrogen pollution and CO2 emissions caused by carbon loss from soil. That’s particularly true in Lombardy region, due to the presence of more than 27% of cattle and 51% of pigs of the national livestock and due to the extent of area devoted to …
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Incorporating Agroforestry Into Water Quality Trading: Evaluating Economic-Environmental Tradeoffs
Nonpoint source nitrogen runoff from agriculture is a significant contributor to eutrophication in the Chesapeake Bay. The state of Virginia has developed several market and incentive-based water quality credit trading programs to meet federal water quality objectives. In theory, these programs …
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Water quality trading: credit stacking and ancillary benefits
… Wetlands, for example, can help mitigate water pollution from point sources as well as non-point sources, serve as habitat for wildlife, sequester carbon and serve as a place for recreation. Studies have found that these services can have substantial value to society. The sale of ecosystem …
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Evaluation of nitrogen management strategies and policies using high-throughput crop simulations
Nitrogen (N) is an essential and often a limiting nutrient in corn production systems. Fertilization with N is critical to achieving high yields and quality. However, because of N's highly mobile nature in the soil, the unpredictability of weather, and the complex interactions between weather, …
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Physical criteria for wetland targeting on a watershed scale
… to retain and remove pollutants, in particular nitrogen, from streams and waterways. For example, nitrogen runoff from tile-drained fields in the Upper Mississippi River Basin is considered a major cause of hypoxia and the dead zone in the Gulf of Mexico. Wetlands have been shown to be a …
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Investigating groundwater derived nutrient fluxes within Tauranga harbour, New Zealand
… have resulted in excess nutrient loading and nitrogen pollution in coastal systems. Radium isotopes were used to quantify SGD and related nutrient fluxes into Tauranga Harbour, a coastal lagoon system, on the largely volcanic North Island of New Zealand. A ²²⁶Ra mass balance quantified SGD …
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Two Cost Analyses in Resource Economics: The Public Service Costs of Alternative Land Settlement Patterns and Effluent Allowance Trading in Long Island Sound
… is to analyze the cost implications of a nitrogen allowance trading system for wastewater treatment plants in Connecticut. Effluent allowance trading involves the transfer of pollution control responsibility between pollution sources. Effluent allowances are the right to discharge a given …