North America

Peter Groffman

His research focuses on terrestrial biogeochemistry with a focus on nitrogen dynamics, especially gases. Projects have ranged across multiple scales from microbial/molecular scale analyses to field/ecosystem scale measurement of fluxes using geochemical and isotope approaches, to landscape and regional scale work using remote sensing, geographic information systems and simulation models. Much of his research is focused at two National Science Foundation funded Long Term Ecological Research (LTER) sites; Hubbard Brook, New Hampshire and Baltimore, MD.

Agriculture: sustainable crop and animal production to help mitigate nitrous oxide emissions

Nitrous oxide (N2O) emissions from agriculture can be tackled by reducing demand for, and consumption of, nitrogen (N) inputs via diet modification and waste reduction, and/or through technologies applied at the field level. This article focusses on the latter options. Opportunities for mitigating N2O emissions at the field level can be advanced by a clearer scientific understanding of the system complexities leading to emissions, while maintaining agricultural system sustainability and productivity.

Conference on Improving NUE in Crop and Livestock Production Systems

From August 13-15 2013, the Soil Science Society of America (SSSA) holds a Research Coordination Network conference on ‘Improving Nitrogen Use Efficiency in Crop and Livestock Production Systems’ with focus on ‘Existing Technical, Economic, and Social Impediments and Future Opportunities’. This conference will be held in Kansas City, MO, USA.

More information on this conference and ways to register can be found at the SSSA website.

A brochure on this conference is available here.

Reactive Nitrogen in the United States

This is a report of the EPA Science Advisory Board, which has conducted a study to analyze sources and fate of Nr in the United States and provide advice to EPA on integrated nitrogen research and control strategies. The objectives for this study were to:

- Identify and analyze from a scientific perspective the problems Nr presents in the environment and the links among them;

- Evaluate the contribution an integrated nitrogen management strategy could make to environmental protection;

- Identify additional risk management options for EP A’s consideration; and

Claudia Wagner-Riddle

She specializes in soil science and meteorology. Her early research as a part of the Climate Change Funding Initiative contributed important scientific advances that were integrated into Intergovernmental Panel on Climate Change (IPCC) methodologies for the development of greenhouse gas inventories. Furthermore, her early research on N2O emissions during spring-melt informed the development of Canada’s N2O inventory model and her continued research and expertise in this area continues to directly inform national models of nitrogen transfers and emissions.

Tulane Nitrogen Reduction Challenge

The Tulane University (New Orleans, US) has announced the next phase of the their 'Tulane Nitrogen Reduction Challenge', an international competition that will award $1 million to the entrepeneur, researcher or inventor with the best plan to reduce the amount of nutrients entering the world's lakes, rivers and oceans through storm water runoff and ultimately reduce the hypoxic zone in the Gulf of Mexico.

For more information, go to the Tulane website.

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