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Articles 121 - 150 of 685

Full-Text Articles in Natural Resource Economics

Geoengineering, Marine Microalgae, And Climate Stabilization In The 21st Century, Charles H. Greene, Mark E. Huntley, Ian Archibald, Léda N. Gerber, Deborah L. Sills, Joe Granados, Colin M. Beal, Michael J. Walsh Mar 2017

Geoengineering, Marine Microalgae, And Climate Stabilization In The 21st Century, Charles H. Greene, Mark E. Huntley, Ian Archibald, Léda N. Gerber, Deborah L. Sills, Joe Granados, Colin M. Beal, Michael J. Walsh

Natural & Applied Sciences Faculty Publications

Society has set ambitious targets for stabilizing mean global temperature. To attain these targets, it will have to reduce CO2 emissions to near zero by mid-century and subsequently remove CO2 from the atmosphere during the latter half of the century. There is a recognized need to develop technologies for CO2 removal; however, attempts to develop direct air-capture systems have faced both energetic and financial constraints. Recently, BioEnergy with Carbon Capture and Storage (BECCS) has emerged as a leading candidate for removing CO2 from the atmosphere. However, BECCS can have negative consequences on land, nutrient, and water use as well as …


Murray Energy Corporation V. Mccarthy, Sarah M. Danno Feb 2017

Murray Energy Corporation V. Mccarthy, Sarah M. Danno

Public Land & Resources Law Review

Holding that the widespread effects of environmental regulation on the coal industry constituted sufficient importance, the Northern District of West Virginia ordered the Environmental Protection Agency to conduct analysis on employment loss and plant reduction resulting from regulatory effects. In admonishing the EPA’s inaction, the court ruled that the Agency had a non-discretionary duty to evaluate employment and plant reduction. Furthermore, the court held that the EPA’s attempt to put forth general reports in place of required evaluations was an invalid attempt to circumvent its statutory duty.


Effects Of Initial Aquifer Conditions On Economic Benefits From Groundwater Conservation, T. Foster, N. Brozovic, A. P. Butler Jan 2017

Effects Of Initial Aquifer Conditions On Economic Benefits From Groundwater Conservation, T. Foster, N. Brozovic, A. P. Butler

Daugherty Water for Food Global Institute: Faculty Publications

Worldwide, there is growing recognition of the need to reduce agricultural groundwater use in response to rapid rates of aquifer depletion. To date, however, few studies have evaluated how benefits of conservation vary along an aquifer’s depletion pathway. To address this question, we develop an integrated modeling framework that couples an agro-economic model of farmers’ field-level irrigation decisionmaking with a borehole-scale groundwater flow model. Unique to this framework is the explicit consideration of the dynamic reductions in well yields that occur as an aquifer is depleted, and how these changes in intraseasonal groundwater supply affect farmers’ ability to manage production …


U.S. Drought Monitor, January 17, 2017, Richard Tinker Jan 2017

U.S. Drought Monitor, January 17, 2017, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 17, 2017 (1/17/17) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, January 10, 2017, David Miskus Jan 2017

U.S. Drought Monitor, January 10, 2017, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 10, 2017 (1/10/17) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, January 3, 2017, David Miskus Jan 2017

U.S. Drought Monitor, January 3, 2017, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 3, 2017 (1/3/17) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


Aquacrop-Os: An Open Source Version Of Fao’S Crop Water Productivity Model, T. Foster, N. Brozovic, A. P. Butler, C. M. U. Neale, D. Raes, P. Steduto, E. Fereres, T. C. Hsiao Jan 2017

Aquacrop-Os: An Open Source Version Of Fao’S Crop Water Productivity Model, T. Foster, N. Brozovic, A. P. Butler, C. M. U. Neale, D. Raes, P. Steduto, E. Fereres, T. C. Hsiao

Daugherty Water for Food Global Institute: Faculty Publications

Crop simulation models are valuable tools for quantifying crop yield response to water, and for devising strategies to improve agricultural water management. However, applicability of the majority of crop models is limited greatly by a failure to provide open-access to model source code. In this study, we present an open-source version of the FAO AquaCrop model, which simulates efficiently water-limited crop production across diverse environmental and agronomic conditions. Our model, called AquaCrop-OpenSource (AquaCrop-OS), can be run in multiple programming languages and operating systems. Support for parallel execution reduces significantly simulation times when applying the model in large geospatial frameworks, for …


In-Situ Observation And Transport Modelling Of Arsenic In Gangetic Plain, India, Pankaj Kumar Gupta, Pranjay Joshi, Jahangeer Jan 2017

In-Situ Observation And Transport Modelling Of Arsenic In Gangetic Plain, India, Pankaj Kumar Gupta, Pranjay Joshi, Jahangeer

Daugherty Water for Food Global Institute: Faculty Publications

The focus of this study is to investigate the arsenic movement and impacts on the residual concentrations on groundwater pollution load. The Gangetic plain area in the Ballia, Uttar Pradesh is selected as study area, which is also reported to extreme arsenic pollution in soil-water system. A modelling approach is developed to assess the arsenic flux in partially saturated zone using data of soil texture, soil hydraulic properties and stratigraphy. Soil type, slope, and land-use cover is considered for estimating the transient flux at the top boundary from daily precipitation and evapotranspiration data of the study area. Solute transport in …


Paid To Pump: How A Tax Credit Could Discourage Conservation Of The High Plains Aquifer, S. Polzkill,, A. Stejskal, H. Wilke, Anna Wistrom, Katherine E. B. Gibson, Mindy J. Spiehs, Nicholas Brozovic Jan 2017

Paid To Pump: How A Tax Credit Could Discourage Conservation Of The High Plains Aquifer, S. Polzkill,, A. Stejskal, H. Wilke, Anna Wistrom, Katherine E. B. Gibson, Mindy J. Spiehs, Nicholas Brozovic

Daugherty Water for Food Global Institute: Faculty Publications

In 1965’s United States v. Shurbet case, an irrigator from Texas asserted his claim for a depletion tax deduction for groundwater pumped from the High Plains Aquifer. He argued that the unique conditions of the southern High Plains region - a plateau where the shallow aquifer is recharged only through precipitation at a slow rate - meant the groundwater resource would be depleted in time. The state argued that groundwater was not fundamentally an exhaustible natural deposit, but the Supreme Court concluded the tax deduction was appropriate given the “peculiar” conditions in the area. It was stated the decision was …


Pathways To Increasing Farmer-Led Investments In Sustainable Agricultural Water Management In Sub-Saharan Africa, Douglas J. Merrey, Peter G. Mccornick, Molly C. Nance Jan 2017

Pathways To Increasing Farmer-Led Investments In Sustainable Agricultural Water Management In Sub-Saharan Africa, Douglas J. Merrey, Peter G. Mccornick, Molly C. Nance

Daugherty Water for Food Global Institute: Faculty Publications

Without a transformative leap forward in the use of irrigation, Africa will continue falling short in the struggle to feed its growing population, improve its people’s nutrition, grow its economies, adapt to the impacts of climate change, and eliminate poverty. While Africans must lead this transformation for it to be successful, the international community can help African countries substantially increase the use of more productive and sustainable water management practices and unlock the potential of farmer-led irrigated agriculture. Achieving highly productive irrigated agricultural systems in Africa requires an enabling environment that facilitates the full engagement of farmers, public and private …


Local To Global: Developing Solutions And Creating Impacts. Annual Report Fy 2017, Robert B. Daugherty Water For Food Global Institute Jan 2017

Local To Global: Developing Solutions And Creating Impacts. Annual Report Fy 2017, Robert B. Daugherty Water For Food Global Institute

Daugherty Water for Food Global Institute: Administrative Materials

FOREWORD - Hank M. Bounds, President, University of Nebraska

PREFACE - Peter G. McCornick, Executive Director

Focus Areas: Where we are headed We are committed to helping the world efficiently use its limited freshwater resources to ensure food security for current and future generations. The diversity of projects and activities in this report reflects the complexity of the challenges we face in achieving this goal through technical and policy research, education and communication. Our research and policy development efforts are focused within five areas to maximize the expertise of DWFI staff, our colleagues at the National Drought Mitigation Center (NDMC) …


U.S. Drought Monitor, December 27, 2016, Brad Rippey Dec 2016

U.S. Drought Monitor, December 27, 2016, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for December 27, 2016 (12/27/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, November 22, 2016, Richard R. Heim Jr. Nov 2016

U.S. Drought Monitor, November 22, 2016, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of the United States for November 22, 2016 (11/22/16) plus: United States crop areas experiencing drought (map), approximate percentage of crop located in drought by state (bar graph), and the percentage of crop area located in drought over the past 52 weeks (line graph) for corn, soybeans, hay, cattle, and winter wheat.


Benchmark Levels For The Consumptive Water Footprint Of Crop Production For Different Environmental Conditions: A Case Study For Winter Wheat In China, La Zhuo, Mesfin Mekonnen, Arjen Y. Hoekstra Nov 2016

Benchmark Levels For The Consumptive Water Footprint Of Crop Production For Different Environmental Conditions: A Case Study For Winter Wheat In China, La Zhuo, Mesfin Mekonnen, Arjen Y. Hoekstra

Daugherty Water for Food Global Institute: Faculty Publications

Meeting growing food demands while simultaneously shrinking the water footprint (WF) of agricultural production is one of the greatest societal challenges. Benchmarks for the WF of crop production can serve as a reference and be helpful in setting WF reduction targets. The consumptive WF of crops, the consumption of rainwater stored in the soil (green WF), and the consumption of irrigation water (blue WF) over the crop growing period varies spatially and temporally depending on environmental factors like climate and soil. The study explores which environmental factors should be distinguished when determining benchmark levels for the consumptive WF of crops. …


U.S. Drought Monitor, November 15, 2016, Richard R. Heim Jr. Nov 2016

U.S. Drought Monitor, November 15, 2016, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 15, 2016 (11/15/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, November 8, 2016, Deborah J. Bathke Nov 2016

U.S. Drought Monitor, November 8, 2016, Deborah J. Bathke

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 8, 2016 (11/8/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, November 1, 2016, Deborah J. Bathke Nov 2016

U.S. Drought Monitor, November 1, 2016, Deborah J. Bathke

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 1, 2016 (11/1/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, October 25, 2016, David Simeral Oct 2016

U.S. Drought Monitor, October 25, 2016, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for October 25, 2016 (10/25/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, October 4, 2016, Brian Fuchs Oct 2016

U.S. Drought Monitor, October 4, 2016, Brian Fuchs

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for October 4, 2016 (10/4/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, September 27, 2016, Chris Fenimore Sep 2016

U.S. Drought Monitor, September 27, 2016, Chris Fenimore

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 27, 2016 (9/27/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, September 20, 2016, Anthony Artusa Sep 2016

U.S. Drought Monitor, September 20, 2016, Anthony Artusa

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 20, 2016 (9/20/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, September 13, 2016, Eric Luebehusen Sep 2016

U.S. Drought Monitor, September 13, 2016, Eric Luebehusen

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 13, 2016 (9/13/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, August 30, 2016, Chris Fenimore Aug 2016

U.S. Drought Monitor, August 30, 2016, Chris Fenimore

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 30, 2016 (8/30/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, August 23, 2016, Brad Rippey Aug 2016

U.S. Drought Monitor, August 23, 2016, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 23, 2016 (8/23/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, August 16, 2016, David Miskus Aug 2016

U.S. Drought Monitor, August 16, 2016, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 16, 2016 (8/16/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, August 9, 2016, Richard Tinker Aug 2016

U.S. Drought Monitor, August 9, 2016, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 9, 2016 (8/9/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, August 2, 2016, Richard Tinker Aug 2016

U.S. Drought Monitor, August 2, 2016, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 2, 2016 (8/2/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, July 26, 2016, Brad Rippey Jul 2016

U.S. Drought Monitor, July 26, 2016, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for July 26, 2016 (7/26/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, July 19, 2016, Chris Fenimore Jul 2016

U.S. Drought Monitor, July 19, 2016, Chris Fenimore

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for July 19, 2016 (7/19/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, July 12, 2016, David Miskus Jul 2016

U.S. Drought Monitor, July 12, 2016, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for July 12, 2016 (7/12/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.