Otto C. Doering

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Any change in climate will have implications for climate-sensitive systems such as agriculture, forestry, and some other natural resources. With respect to agriculture, changes in solar radiation, temperature, and precipitation will produce changes in crop yields, crop mix, cropping systems, scheduling of field operations, grain moisture content at harvest,(More)
L ast May’s passage of the 2008 Farm Bill raises the stakes for biofuel sustainability: A substantial subsidy for the production of cellulosic ethanol starts the United States again down a path with uncertain environmental consequences. This time, however, the subsidy is for both the refiners ($1.01 per gallon) and the growers ($45 per ton of biomass),(More)
Despite major efforts, the reduction of reactive nitrogen (Nr) using traditional metrics and policy tools for the Chesapeake Bay has slowed in recent years. In this article, we apply the concept of the Nitrogen Cascade to the chemically dynamic nature and multiple sources of Nr to examine the temporal and spatial movement of different forms of Nr through(More)
To provide alternatives to petroleum-based energy, enhance global security, and reduce carbon emissions, the U.S. government has mandated a greater proportion of our energy portfolio be derived from plant-based fuels (i.e., 2007 Energy Independence and Security Act; EISA). However, the potential benefits of this nascent bioeconomy may be offset by damage to(More)
Economic analysis can be a guide to determining the level of actions taken to reduce nitrogen (N) losses and reduce environmental risk in a cost-effective manner while also allowing consideration of relative costs of controls to various groups. The biophysical science of N control, especially from nonpoint sources such as agriculture, is not certain.(More)
A simulator was developed to evaluate alternative agricultural practices for energy efficiency in Midwest crop production. It uses seven years of real weather data, including farmer observations of good working days which are used to simulate when field operations could be performed. Solar radiation, temperature, rainfall, and fertilizer inputs are used to(More)
Aghasili Onyekachi U. M.S., Purdue University, May 2015. Fuel Choice, Acute Respiratory Infection and Child Growth in Uganda. Major Professor: Gerald Shively. This thesis seeks to explain the relationship between a household’s choice of fuel and the health and nutrition outcomes of children below the age of 5 in Uganda. The first objective is to examine the(More)
Hettich, Rachel C. M.S., Purdue University, May 2015. Subsidizing Carbon Sequestration via Forestry in Maryland: A Cost-Benefit Assessment. Major Professor: Philip Abbott. Carbon sequestration by forestry is one way to mitigate climate change, and policy incentives are in place to encourage private investment in forestry. State and federal forestry(More)
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