A5049335473- Economic and Environmental Valuation
- Soil and Water Nutrient Dynamics
- Hydrology and Watershed Management Studies
- Agricultural Economics and Policy
- Bioenergy crop production and management
- Biofuel production and bioconversion
- Forest Management and Policy
- Water resources management and optimization
- Soil erosion and sediment transport
- Climate Change Policy and Economics
- Genetically Modified Organisms Research
- Agricultural Innovations and Practices
- Hydrology and Sediment Transport Processes
- Insect Resistance and Genetics
- Peatlands and Wetlands Ecology
- Agriculture Sustainability and Environmental Impact
- Water-Energy-Food Nexus Studies
- Fish Ecology and Management Studies
- Water Quality and Resources Studies
- Crop Yield and Soil Fertility
- Housing Market and Economics
- Economics of Agriculture and Food Markets
- Environmental Conservation and Management
- Flood Risk Assessment and Management
- Environmental Impact and Sustainability
University of Iowa
2006-2025
Southern Illinois University Carbondale
2009-2017
New York University Press
2017
University of California System
2017
Environmental Law Institute
2016
University of Rhode Island
2014
Iowa State University
1999-2009
Center for Agricultural Research
2007
If riverside levees are strategically removed or repositioned, the result can be reduced flood risk and increased goods services.
Understanding the dynamics of food production is critical to improving security. This particularly important in regions that rely on subsistence agriculture with little adaptive capacity climate change. Sorghum plays an role security some poorest parts world. article reviews literature identify and examine major factors affecting sorghum three regions. Factors were not categorized ex ante but rather determined from review. Ten identified as having notable impacts production: change,...
ABSTRACT: The size, scale, and number of subwatersheds can affect a watershed modeling process subsequent results. objective this study was to determine the appropriate level subwatershed division for simulating flow, sediment, nutrients over 30 years four Iowa watersheds ranging in size from 2,000 18,000 km 2 with Soil Water Assessment Tool (SWAT) model. results analysis indicated that variation total had very little effect on streamflow. However, opposite result found nitrate, inorganic P;...
In 2008, the hypoxic zone in Gulf of Mexico, measuring 20 720 km2, was one two largest reported since measurement began 1985. The extent is related to nitrogen and phosphorous loadings originating on agricultural fields upper Midwest. This study combines tools evolutionary computation with a water quality model cost data develop trade-off frontier for Upper Mississippi River Basin specifying least achieving nutrient reductions location conservation practices needed. allows policymakers...
Applications of the Soil and Water Assessment Tool (SWAT) model typically involve delineation a watershed into subwatersheds/subbasins that are then further subdivided hydrologic response units (HRUs) which homogeneous areas aggregated soil, landuse, slope smallest modeling used within model. In given standard SWAT application, multiple potential HRUs (farm fields) in subbasin usually single HRU feature. other words, version combines with same landuse/landcover, slope, but located at...
While biofuels may yield renewable fuel benefits, there could be downsides in terms of water quality and other environmental stressors, particularly if corn is relied upon exclusively as the feedstock. The consequences increased production will depend importantly on where (and how) additional grown, which, turn, depends characteristics land its associated profitability. Previous work has rules thumb for allocating to acreage based historical use or heuristics. Here, we advance our...
Tenants and part-owners are farming an increasing number of acres in the United States, while full-owners fewer acres. This shift ownership is a potential cause for concern because some previous research indicated that tenant part-owner farmers were less likely to adopt conservation practices than who owned land they farmed. If trend persists, changes would signal national drop adoption. Here we examine this issue using survey agricultural operators Clear Creek watershed Iowa, state with...
Abstract Agricultural land in the Midwest is a source of food and fuel, as well biodiversity. It also cause excess nutrients that make their way to Mississippi River Gulf Mexico. To address unsustainable changes biogeochemical cycles ecosystem functions, multidisciplinary approach involving social science, natural engineering often effective. Given potential second‐generation biofuels, capitalizing on deep‐rooted perennial bioenergy crops capable thriving poor soils, we demonstrated an...
The concept of agro-extractivism was developed by scholars Latin America to characterize socio-ecological processes dispossession and the commodification human nonhuman nature colonial capitalist actors. Here, I use it understand process white settlement in US Heartland nineteenth century. With state Iowa as case study, analyze how creation state's infrastructure, from railroads education, based on land expropriation through a variety grants what define compounded extraction: massive...
<i>We estimated a hedonic model to explain variations in residential sales price with standard house attributes, such as number of bedrooms and square feet living space, well the effects distance density livestock feeding operations. We find that operations have an overall statistically significant effect on property values. Predicted negative are largest for properties downwind close In addition, moderate size more impact than do large-scale operations, most likely reflecting age, type,...
Agricultural conservation policy does not happen in a vacuum but, rather, is linked to myriad of other policies affecting individual farms, national and international trade, energy production distribution. While the primary purpose commodity subsidies supplement farmer income, they have also had strong influence on cropland expansion agricultural intensification. One result this intensification has been burgeoning crop productivity. Another decline provision ecosystem services, benefits that...
Abstract. Modeling impacts of agricultural scenarios and climate change on surface water quantity quality provides useful information for planning effective water, environmental land use policies. Despite the significant agriculture quality, limited literature exists that describes combined future bioenergy crop yields watershed hydrology. In this study, soil assessment tool (SWAT) eco-hydrological model was used to five three downscaled pathways (representative concentration pathways, RCPs)...
Female agricultural land ownership and operatorship are on the rise in Iowa across nation, but little research exists that explores conservation outreach to women gendered differences knowledge attitudes. The authors surveyed all landowners operators Clear Creek Watershed eastern about attitudes, as well preferred sources of information conservation. is a high-visibility watershed for several reasons, including its long-standing stakeholder council connection impaired River. Analysis survey...
There is consensus that the Clean Water Act (CWA) has generally been effective in addressing point source pollution US. also non-point (NPS) pollution, particularly from agriculture, remains a problem. The potential for CWA framework to affect change unclear, due limited power of US federal government NPS, contentiousness surrounding it, and lack funding implement plans have developed. States are critical improving water quality U.S. In Mississippi River Basin, State-level Nutrient Reduction...