Natural Resource Economics Commons^™

The Irreversible Momentum Of Clean Energy, Barack Obama

United States Department of Energy: Publications

The release of carbon dioxide (CO₂) and other greenhouse gases (GHGs) due to human activity is increasing global average surface air temperatures, disrupting weather patterns, and acidifying the ocean. Left unchecked, the continued growth of GHG emissions could cause global average temperatures to increase by another 4°C or more by 2100 and by 1.5 to 2 times as much in many midcontinent and far northern locations. Although our understanding of the impacts of climate change is increasingly and disturbingly clear, there is still debate about the proper course for U.S. policy—a debate that is very much on display …

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

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

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

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

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 …

Malta : Natural Freshwater Resources, Lisamarie Pereira

Global Public Health

The aim of this paper is to discuss Malta’s struggle with limited natural freshwater resources. Malta currently uses aquifers to obtain natural freshwater. For over a decade, aquifers have been under pressure from over-abstraction. Due to this issue, Malta has not been able to obtain enough natural freshwater for agriculture and basic living. The biggest risk due to over-abstraction is retrieving a smaller volume of freshwater. In Malta’s attempted interventions, the biggest issue is the Maltese government’s misconceptions. The Maltese government believes the country has unlimited natural freshwater resources. Due to this misconception, nothing is being done to actively fix …

Household Food Vulnerability Under An Extreme Weather Event In Sta. Cruz Subwatershed, Laguna, Philippines, Karen P. Quilloy, Agnes C. Rola

Journal of Economics, Management and Agricultural Development

This study is an assessment of the vulnerability of households to food insecurity under an extreme weather event. A subjective-qualitative technique primarily based on the perceived food security status of the households and their food insecurity coping strategies was used to examine household food vulnerability. Key findings reveal that households living in the vulnerable areas of Sta. Cruz subwatershed were generally resilient to extreme weather events and only suffered from slight to moderate form of food security problems. Impacts of extreme weather events on them were generally moderate but the highest impact was observed in their income sources, logistics, and …

Seasonal Integration And Co-Integration In The Prices Of Key Aquaculture Species In The Philippines, Primo E. Rodriguez, Marjorie-Anne D. Sumaya

Journal of Economics, Management and Agricultural Development

This paper investigates the relationship between retail and wholesale prices of milkfish (Chanoschanos), tilapia (Tilapianilotica), and tiger prawn (Peneaus monodon) using techniques that recognize the role of seasonal factors for testing orders of integration of and the existence of cointegration between these prices. This paper finds that seasonality plays an important role in explaining movements in the prices of these farmed species. This is so because, with the exception of the wholesale price of tiger prawn, unit roots occur at all frequencies for all of the prices that were examined. None of the pairs of prices were found to be …

Social Vulnerability To Climate Variability And Extremes Of Farming Households In Puerto Princesa City, Palawan, Philippines, Joan U. Ureta, Leonardo M. Florece, Juan M. Pulhin, Ma. Victoria O. Espaldon

Journal of Economics, Management and Agricultural Development

Climate-sensitive livelihoods are in the frontline of sectors which will be affected most by climate change. Without proper intervention, smallholder farmers would suffer from declining crop production, yield, and on-farm income, among others. Hence, this study aims to assess the social vulnerability of farming households residing in northern part of Puerto Princesa City, Philippines. Sustainable Livelihoods Framework (SLF) was used in developing separate social vulnerability indices for drought, typhoon, and early onset of rains. Unbalanced weighted approach through principal component analysis (PCA) was employed in assigning weights to the variables. Findings showed that financial capital has the highest contribution to …

Impact Of Trade Liberalization On Research And Development (R&D) Expenditures In The Philippines, Mary Joyce N. Vadanes

Journal of Economics, Management and Agricultural Development

This paper examines the effects of tariff reductions endorsed under GATT-WTO and AFTA-CEPT on R&D expenditures of Philippine manufacturing firms. It also considers firm characteristics like exports, capital intensity, and size as explanatory factors. Using pooled firm-level data that are harmonized with the international nomenclatures for traded products, the results uphold that intensified competition from foreign players drive domestic firms to develop their production processes and products. Accordingly, the main findings of the paper reveal that reductions in MFN and ASEAN tariffs increase the growth rate of R&D within manufacturing firms. Likewise, a rising export share is associated with higher …

Analyzing The Relationship Between Exposure To Extreme Weather And Economic Inequality In The Philippines, Rosalina Palanca Tan

Journal of Economics, Management and Agricultural Development

This paper looks into the relationship between typhoon exposure and inequality in per capita income and per capita expenditure of households in the Philippines by comparing the change in the Theil L and Theil T inequality indexes between 2009 and 2012 across different exposure groups. A decomposition analysis of the Theil index was also undertaken to establish the relative contributions of within-exposure group inequality and between-exposure groups inequality to total inequality. Conforming to the paper’s hypothesis, the group that has the highest exposure to typhoons was found to experience a worsening of both income and expenditure inequality while the group …

Managing For Wildlife Habitat On Rangelands In The Great Plains, Maggi Sliwinski, Mark E. Burbach, Larkin Powell, Walter H. Schacht

School of Natural Resources: Documents and Reviews

No abstract provided.

Relationship Between Zooplankton And Walleye Rearing Pond Success, Danny Tuckett

Journal of Earth and Life Science

Walleye Sander vitreus are an important sport fish in Minnesota. This has led to the raising of Walleye in ponds to later be stocked into lakes. This study was done to determine the relationship between Walleye prey (zooplankton) and the success of Walleye in 11 stocked ponds in the Ortonville, MN area. There was no management of the ponds until harvest, which starts in late September and ends in November. There were significant positive relationships between rotifer density (P = 0.03) and nauplii density (P = 0.04) to kg of Walleye harvested. The setting where nauplii and rotifer density are …

Estimating The Number Of Recreational Anglers For A Given Waterbody, Kevin L. Pope, Larkin A. Powell, Brian S. Harmon, Mark A. Pegg, Christopher J. Chizinski

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Knowing how many anglers use a given body of water is paramount for understanding components of a fishery related to angling pressure and harvest, yet no study has attempted to provide an estimate of the population size of anglers for a given waterbody. Here, we use information from creel surveys in a removal-sampling framework to estimate total numbers of anglers using six reservoirs in Nebraska, USA, and we examine the influence of the duration of sampling period on those estimates. Population estimates (N ± SE) of unique anglers were 2050 ± 45 for Branched Oak Lake, 1992 ± 29 for …

A Descriptive Analysis Of Regal Fritillary (Speyeria Idalia) Habitat Utilizing Biological Monitoring Data Along The Big Bend Of The Platte River, Ne, Andrew J. Caven, Kelsey C. King, Joshua D. Wiese, Emma M. Brinley Buckley

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Speyeria idalia populations have declined as much as 95 percent over the last three decades. Here we critically evaluate prairie habitat components along the Platte River in central Nebraska that S. idalia populations require in an effort to better inform conservation efforts. We utilized S. idalia count data from biological monitoring transects where vegetation, soils, land management, and flooding frequency data were also collected to describe the habitat constituents associated with S. idalia presence. We utilize comparative statistics, Pearson’s correlation analysis, and random forest analysis to model S. idalia habitat on land owned and managed by a small conservation NGO. …

Modeling With A Conceptual Representation: Is It Necessary? Does It Work?, Rebecca C. Jordan, Steven Gray, Amanda E. Sorensen, Samantha Pasewark, Suparna Sinha, Cindy E. Hmelo-Silver

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

In response to recent educational imperatives in the United States, modeling and systems thinking have been identified as being critical for science learning. In this paper, we investigate models in the classroom from two important perspectives: (1) from the teacher perspective to understand how teachers perceive models and use models in the classroom and (2) from the students perspective to understand how student use model-based reasoning to represent their understanding in a classroom setting. Qualitative data collected from 19 teachers who attended a professional development workshop in the northeastern United States indicate that while teachers see the value in teaching …

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) …

Succession; A Business Strategy, Jan Miller, Department Of Primary Industries And Regional Development, Western Australia

Farm Systems and Economics published reports

Plan, Prepare, Prosper - workshop

This document is part of the Plan, Prepare, Prosper program that was developed under the Pilot of Drought Reform Measures ('the pilot'), a joint initiative between the Australian Government and the Western Australian Government. The program aims to support farmers and rural communities to prepare for drought, climate variability and other challenges.

The Succession planning: A business strategy workshop will help participants to begin and maintain the succession planning process.

This workshop will guide you through the process of exploring, planning and enacting succession planning.

Please use this manual as a checklist to help you …

Protocol For Surveying Bat Use Of Lava Tube Caves During Winter In Craters Of The Moon National Monument And Preserve, Version 1.0, Thomas J. Rodhouse, Kathleen Slocum, Todd Stefanic, Shawn Thomas, Meghan Lonneker, Gordon Dicus

United States National Park Service: Publications

Executive Summary

The mission of the National Park Service (NPS) is “to conserve unimpaired the natural and cultural resources and values of the national park system for the enjoyment of this and future generations” (NPS 1999). To uphold this goal, the Director of the NPS approved the Natural Resource Challenge to encourage national parks to focus on the preservation of the nation’s natural heritage through science, natural resource inventories, and expanded resource monitoring (NPS 1999). Through the Challenge, 270 parks in the national park system were organized into 32 inventory and monitoring (I&M) networks.

The Upper Columbia Basin Network Inventory …