Open Access. Powered by Scholars. Published by Universities.®

2015

Discipline
Institution
Keyword
Publication
Publication Type

Articles 211 - 240 of 279

Full-Text Articles in Natural Resources Management and Policy

A Unifying Gravity Framework For Dispersal, E. Jongejans, O. Skarpaas, M. J. Ferrari Et Al. Jan 2015

A Unifying Gravity Framework For Dispersal, E. Jongejans, O. Skarpaas, M. J. Ferrari Et Al.

School of Natural Resources: Faculty Publications

No abstract provided.


2015 Academic Program Review School Of Natural Resources University Of Nebraska–Lincoln Jan 2015

2015 Academic Program Review School Of Natural Resources University Of Nebraska–Lincoln

School of Natural Resources: Documents and Reviews

No abstract provided.


Strengthening The Resiliency Of Dryland Forest-Based Livelihoods In Ethiopia And South Sudan: A Review Of Literature On The Interaction Between Dryland Forests, Livelihoods And Forest Governance, Steven Lawry, Rebecca J. Mclain, Habtemariam Kassa Jan 2015

Strengthening The Resiliency Of Dryland Forest-Based Livelihoods In Ethiopia And South Sudan: A Review Of Literature On The Interaction Between Dryland Forests, Livelihoods And Forest Governance, Steven Lawry, Rebecca J. Mclain, Habtemariam Kassa

Institute for Sustainable Solutions Publications and Presentations

Dry forests account for nearly half of the world’s tropical and subtropical forests and provide a multitude of ecological services. They contribute to hydrological cycles and livestock and wildlife provisioning; and host pollinators and wild plants. They are also important ecological zones for dryland agriculture and pastoral livelihood strategies that support hundreds of millions of people around the world. Dry forests cover large areas and their biomass stores carbon and helps mitigate climate change. Dry forests are particularly important to people in Africa. They provide wood for construction and energy, contribute to local diets with wild fruits, vegetables, nuts, edible …


Effects Of Extension Services On The Technical Efficiency Of Rice Farmers In Albay, 2014-2015, Bm Bathan Jan 2015

Effects Of Extension Services On The Technical Efficiency Of Rice Farmers In Albay, 2014-2015, Bm Bathan

Journal of Economics, Management and Agricultural Development

Through the Farmers Information and Technology Services (FITS) program, extension services in the form of trainings and seminars, and education and communication materials were provided to rice farmers in Albay. Using farm-level input-output data covering the wet season of 2014 and the socio-economic and farm-specific characteristics of randomly sampled 30 farmer beneficiaries and 30 non-beneficiaries, a stochastic production function and technical inefficiency model were estimated. Results of the study reveal that beneficiaries have higher input utilization, yield and technical efficiency than non-beneficiaries. Furthermore, the amount of seed and fertilizer significantly and positively affects the yield of rice. In addition, the …


Economic Impacts Of Smallholder Oil Palm (Elaeis Guineensis Jacq.) Plantations On Peatlands In Indonesia, Roberto F. Ranola Jr., Asa Jose Sajise Jan 2015

Economic Impacts Of Smallholder Oil Palm (Elaeis Guineensis Jacq.) Plantations On Peatlands In Indonesia, Roberto F. Ranola Jr., Asa Jose Sajise

Journal of Economics, Management and Agricultural Development

Oil palm smallholders on peatlands have contributed significantly to economic development in rural areas by augmenting income and reducing poverty. However, these plantations also cause adverse environmental impacts such as carbon emission, haze and peat fires, deforestation, water supply disruption and biodiversity loss. The objective of the study is to determine the economic impacts of developing smallholder oil palm plantations on peatlands in Siak District Riau Province, Indonesia. Cochran sampling technique was employed to select the respondents. Cost benefit analysis was used to determine the economic impacts of the smallholder oil palm plantations. Results reveal that the development of 94,726 …


Implementation Of Collaborative Learning As A High-Impact Practice In A Natural Resources Management Section Of Freshman Seminar, Matthew W. Mcbroom, Steven H. Bullard, David Kulhavy, Daniel R. Unger Jan 2015

Implementation Of Collaborative Learning As A High-Impact Practice In A Natural Resources Management Section Of Freshman Seminar, Matthew W. Mcbroom, Steven H. Bullard, David Kulhavy, Daniel R. Unger

Faculty Publications

Forestry and environmental science students enrolled in a one credit hour freshman seminar course participated in a land management evaluation and water quality sampling excursion using canoes and water sampling equipment. The purpose of this assessment was to engage students with hands-on, field based education in order to foster connections to their chosen profession and the resource. This culminated in poster symposium of the experience. Broad competency areas for high impact practices in natural resource management were emphasized for learning. Students were engaged in the exercise and commented that the project helped them develop a sense of place and forming …


Evaluating An Unconfined Aquifer By Analysis Of Age-Dating Tracers In Stream Water, D. K. Solomon, T. E. Gilmore, B. Kimball, D. P. Genereux Jan 2015

Evaluating An Unconfined Aquifer By Analysis Of Age-Dating Tracers In Stream Water, D. K. Solomon, T. E. Gilmore, B. Kimball, D. P. Genereux

School of Natural Resources: Faculty Publications

The mean transit time (MTT) is a fundamental property of a groundwater flow system that is strongly related to the ratio of recharge rate to storage volume. However, obtaining samples for estimating the MTT using environmental tracers is problematic as flow-weighted samples over the full spectrum of transit times are needed. Samples collected fromthe base flow of a gaining stream in the North Carolina Coastal Plain (West Bear Creek) that were corrected for exchange with the atmosphere yielded environmental tracer concentrations (SF6 and CFC-11) very similar to flow-weighted values from nine or ten streambed piezometers that directly sampled groundwater …


Application Of Remote Sensing For Quantifying And Mapping Surface Energy Fluxes In South Central Nebraska: Analyses With Respect To Field Measurements, Vivek Sharma, Suat Irmak, Ayse Kilic, Denis Mutibwa Jan 2015

Application Of Remote Sensing For Quantifying And Mapping Surface Energy Fluxes In South Central Nebraska: Analyses With Respect To Field Measurements, Vivek Sharma, Suat Irmak, Ayse Kilic, Denis Mutibwa

School of Natural Resources: Faculty Publications

Large-scale quantification of crop evapotranspiration (ETc) from various vegetation surfaces can aid in planning, managing, and allocating water resources. Field measurement of surface energy fluxes, including ETc, remains (and should remain) a crucial process for calibration and validation of satellite/remote sensing-based methods, which can provide important supporting information for water balance assessments and for analyzing the spatial distribution of energy fluxes on large scales. The Surface Energy Balance System (SEBS) was evaluated in estimating surface energy fluxes in south central Nebraska using Landsat imagery and meteorological data. SEBS-estimated surface energy fluxes were compared to Bowen Ratio Energy Balance System (BREBS) …


2015 Interior Least Tern And Piping Plover Monitoring, Research, Management, And Outreach Report For The Lower Platte River, Nebraska, Mary Bomberger Brown, Lauren R. Dinan, Joel G. Jorgensen Jan 2015

2015 Interior Least Tern And Piping Plover Monitoring, Research, Management, And Outreach Report For The Lower Platte River, Nebraska, Mary Bomberger Brown, Lauren R. Dinan, Joel G. Jorgensen

School of Natural Resources: Faculty Publications

Abstract:

This document reports on our monitoring, research, management, and outreach activities during the past 12 months (2014–2015). We prepared it to inform our partners, cooperating agencies, funding sources, and other interested parties of our activities and to provide a preliminary summary of our results.

The lower Platte River and its major tributaries provide important nesting and migratory stopover habitat for two bird species of special conservation concern: the state and federally endangered Interior Least Tern (Sternula antillarum athalassos) and threatened Piping Plover (Charadrius melodus). The Tern and Plover Conservation Partnership (TPCP), based at the University …


A Mixed-Methods Approach To Assessing Success In Transitioning Water Management Institutions: A Case Study Of The Platte River Basin, Nebraska, Christina Hoffman Babbitt, Mark E. Burbach, Lisa Pennisi Jan 2015

A Mixed-Methods Approach To Assessing Success In Transitioning Water Management Institutions: A Case Study Of The Platte River Basin, Nebraska, Christina Hoffman Babbitt, Mark E. Burbach, Lisa Pennisi

School of Natural Resources: Faculty Publications

To address increasing conflicts between surface water and groundwater users, the state of Nebraska has adopted a more localized and integrated approach in managing water resources. Integrated approaches offer promise in better managing connected water resources within the state; however, little review of the potential benefits and/or challenges of these actions has been conducted. This case study uses both qualitative and quantitative data collection efforts to take an in-depth look at how this new and innovative management system is working through the eyes of stakeholders living and working in the basin. Data collection reveals that overall the current water management …


Drougthscape, Winter 2015, Kelly Smith Jan 2015

Drougthscape, Winter 2015, Kelly Smith

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Contents

Director’s report

Central U.S. 2012 report

October-December drought summary

2014 drought summary

Caribbean capacity building

Drought impacts in 2014

California timeline 2014

UC Davis ranching workshop

NASA SMAP data

Global drought info system

Community Capitals

Evaluation and assessment

Indicator-impact research

NDMC on YouTube


Five-Year Growth Report: From Inception To Global Influence 2010 - 2015, Robert B. Daugherty Water For Food Institute Jan 2015

Five-Year Growth Report: From Inception To Global Influence 2010 - 2015, Robert B. Daugherty Water For Food Institute

Daugherty Water for Food Global Institute: Administrative Materials

While we are proud of our accomplishments in building an institutional framework, we are even more proud of our institute’s initial work to build an impact-driven program. This work is indeed the central focus of this report. Through the leadership of our new directors for research and policy, we have begun to build a vigorous research and policy development program that includes engagement with both local and global stakeholders. We have also developed a strong set of collaborations with national and international partners, striving to achieve a balance between work in Nebraska and globally, including in India, Brazil, China and …


Nebraska Water Center Annual Report 2015, Nebraska Water Center Jan 2015

Nebraska Water Center Annual Report 2015, Nebraska Water Center

Nebraska Water Center: Administrative Materials

Contents

Foreword 4

The Nebraska Water Center: Leadership in Research, Education and Communication 6

Director’s Letter 8

For More Than 50 years: The Nebraska Water Center 10

Helping Build the Future 11

Nebraska Water Center Advisory Board 14

Water Resources Advisory Panel: A key to success 15

Information for Our Clients and the Public 16

Primary Goals 18

USGS 104b Projects 20

Dvorak, Ray Aim at Improving Water Quality for Small Communities 20

October Retreat at UNK 24

Public Water Lectures 25

2015 Special Seminars 26

2015 Water Symposium and Water Law Conference 28

Water Tour Visits Republican River Basin …


Water, Bison, And Horses: Natural Resources And Their Impacts On Native Raids And Relations In Late, Spanish Colonial New Mexico, Dori L. Gorczyca Jan 2015

Water, Bison, And Horses: Natural Resources And Their Impacts On Native Raids And Relations In Late, Spanish Colonial New Mexico, Dori L. Gorczyca

The Gettysburg Historical Journal

During the Spanish colonial period in New Mexico’s history, the area became a place where cultural, social, and economic mixing of various Native American groups and Spanish settlers frequently occurred. Certain peoples, such as the Pueblo, lived in an agrarian society and worked in close proximity to the Spanish. Other peoples, such as the Comanche, Apache, and Navajo, developed hostile relationships with these foreigners, and their raids on the Spanish, Pueblo, and each other changed the dynamic of their settlements. Sources from Spanish and Church officials, along with travel logs, discuss the effects of natural resources, such as water and …


Zebra Mussel (Dreissena Polymorpha) Habitat Associations In Four West-Central Minnesota Lakes, April Rose Londo Jan 2015

Zebra Mussel (Dreissena Polymorpha) Habitat Associations In Four West-Central Minnesota Lakes, April Rose Londo

All Graduate Theses, Dissertations, and Other Capstone Projects

In 1989, zebra mussels (Dreissena polymorpha) were first documented in the land of ten thousand lakes in the Lake Superior Basin at Duluth. Zebra mussels are successful invaders because the species attaches to substrates with byssal threads, can adapt to a wide range of environmental conditions, and has a free-swimming veligers that are easily transported. Although invasive mollusks pose a range of economic and ecological threats to inland waters, our understanding of zebra mussels in Minnesota lakes remains limited. To gain additional information regarding zebra mussel ecology in lake systems, I conducted research in four west-central Minnesota lakes that were …


The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- January 2015, Martha Shulski, Natalie Umphlett, Bill Sorensen, Crystal J. Stiles Jan 2015

The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- January 2015, Martha Shulski, Natalie Umphlett, Bill Sorensen, Crystal J. Stiles

Prairie Post: Quarterly Newsletter of the High Plains Regional Climate Center

Inside this issue:

Message from the director........................................1

Stakeholder engagement activities......................................2

AWDN news...............................3

Marketing efforts.....................3

Climate services and information................................4

Product highlight....................5

Outreach events and research highlights.................5

Recent and upcoming travel and activities.............................6


The Gravity Environment Of Zhouqu Debris Flow Of August 2010 And Its Implication For Future Recurrence, Diandong Ren, Lance M. Leslie, Xinyi Shen, Yang Hong, Qingyun Duan, Rezaul Mahmood, Yun Li, Gang Huang, Weidong Guo, Mervyn J. Lynch Jan 2015

The Gravity Environment Of Zhouqu Debris Flow Of August 2010 And Its Implication For Future Recurrence, Diandong Ren, Lance M. Leslie, Xinyi Shen, Yang Hong, Qingyun Duan, Rezaul Mahmood, Yun Li, Gang Huang, Weidong Guo, Mervyn J. Lynch

High Plains Regional Climate Center: Staff Publications

This study investigates the geological background of the August 7-8, 2010 Zhouqu debris flows in the northwestern Chinese province of Gansu, and possible future occurrence of such hazards in the peri-Tibetan Plateau (TP) regions. Debris flows are a more predictable type of landslide because of its strong correlation with extreme precipitation. However, two factors affecting the frequency and magnitude of debris flows: very fine scale precipitation and degree of fracture of bedrock, both defy direct observations. Annual mean Net Primary production (NPP) is used as a surrogate for regional precipitation with patchiness filtered out, and gravity satellite measured regional mass …


Development Of A Long-Term (1884-2006) Serially Complete Dataset Of U.S. Temperatures And Precipitation For Climate Services, Jinshing You, Kenneth G. Hubbard, Martha Shulski, Mark D. Svoboda, Michael J. Hayes Jan 2015

Development Of A Long-Term (1884-2006) Serially Complete Dataset Of U.S. Temperatures And Precipitation For Climate Services, Jinshing You, Kenneth G. Hubbard, Martha Shulski, Mark D. Svoboda, Michael J. Hayes

High Plains Regional Climate Center: Staff Publications

Serially complete climate datasets with no missing data are necessary for a diverse group of users working in many economic sectors. In this article we describe the procedures used to create a Serially Complete Data set (SCD) for the U.S. We include the selection criterion applied to potential SCD stations, the various procedural steps and the details applied to each step. A few observations that were not previously digitized were obtained from observers official paper reports. The methods used to estimate missing data are the Spatial Regression Test and the Inverse Distance Weighting technique. Using the criterion for selecting stations …


A Historical Perspective On Nebraska’S Variable And Changing Climate, Martha Shulski, William Baule, Crystal J. Stiles, Natalie A. Umphlett Jan 2015

A Historical Perspective On Nebraska’S Variable And Changing Climate, Martha Shulski, William Baule, Crystal J. Stiles, Natalie A. Umphlett

High Plains Regional Climate Center: Staff Publications

Nebraska is situated at the intersection of the northern and southern Great Plains, exhibiting a dramatic longitudinal gradient for precipitation and humidity, and benefiting from groundwater resources. The continental climate is highly variable temporally both for temperature and precipitation. Our assessment of long-term meteorological observations shows that over the last century the annual average temperature in Nebraska has warmed approximately 0.6°C, which is similar to the increase in the global average temperature over the same time period. Furthermore, we found minimum temperatures have warmed more than maximum temperatures, and winter and spring show the strongest warming. We found no significant …


Remaking Nature In Montana: Topophilic Considerations Of Wolves And Wolf Trapping, Andrew Myers Jan 2015

Remaking Nature In Montana: Topophilic Considerations Of Wolves And Wolf Trapping, Andrew Myers

Graduate Student Theses, Dissertations, & Professional Papers

In 2011, after nearly forty years of federal protection, the gray wolf was removed from the Endangered Species List in Montana and its management entrusted to the Montana Fish, Wildlife & Parks. The implementation of public trapping seasons in 2012 as a method to control wolf populations has further inflamed an already embroiled debate. The purpose of this research was to investigate how the presence of wolves and wolf trapping impacts human attachments to landscapes of “nature” in Montana by focusing on the following questions: What are the public’s social constructions of wolves? What are the public’s social constructions of …


An Economic Analysis Of High-Intensity, Short-Duration Grazing Systems In South Dakota And Nebraska, Bronc Mcmurtry Jan 2015

An Economic Analysis Of High-Intensity, Short-Duration Grazing Systems In South Dakota And Nebraska, Bronc Mcmurtry

Electronic Theses and Dissertations

Four different grazing systems: two rotational, a continuous, and a high-intensity, short-duration (mob) system, replicated twice, were evaluated from an economic perspective. Mob grazing is defined as a system having very high stocking rates for a small amount of time. Livestock are forced to eat or trample the vegetation. Stocking rates and average daily gains (ADG) were collected from the UNL Barta Brothers ranch near Rose, Nebraska. The study started in 2011 and lasted until 2014. Using the performance data and other cost data relevant to South Dakota and Nebraska, budgets were set up for each system and extrapolated to …


Differences In Waste Generation, Waste Composition, And Source Separation Across Three Waste Districts In A New York Suburb, Omkar Aphale, Krista L. Thyberg, David J. Tonjes Jan 2015

Differences In Waste Generation, Waste Composition, And Source Separation Across Three Waste Districts In A New York Suburb, Omkar Aphale, Krista L. Thyberg, David J. Tonjes

Technology & Society Faculty Publications

Six tonnes of discards and recyclables from three waste districts in a New York suburb were sorted in 2012. The districts were chosen because one had a higher recycling percentage, one had median performance, and one was a low performing district. ASTM standards were followed for the waste composition sorting. The results showed, as expected, that the waste district with the highest recycling rate appeared to have the highest separation efficiencies, leading to greater amounts of recyclable materials being source separated. The waste districts also had different overall waste generation, both in terms of the amounts of wastes generated, and …


A Management Framework For Municipal Solid Waste Systems And Its Application To Food Waste Prevention, Krista L. Thyberg, David J. Tonjes Jan 2015

A Management Framework For Municipal Solid Waste Systems And Its Application To Food Waste Prevention, Krista L. Thyberg, David J. Tonjes

Technology & Society Faculty Publications

Waste management is a complex task involving numerous waste fractions, a range of technological treatment options, and many outputs that are circulated back to society. A systematic, interdisciplinary systems management framework was developed to facilitate the planning, implementation, and maintenance of sustainable waste systems. It aims not to replace existing decision-making approaches, but rather to enable their integration to allow for inclusion of overall sustainability concerns and address the complexity of solid waste management. The framework defines key considerations for system design, steps for performance monitoring, and approaches for facilitating continual system improvements. It was developed by critically examining the …


Quantification Of Food Waste Disposal In The United States: A Meta-Analysis, Krista L. Thyberg, David J. Tonjes, Jessica Gurevitch Jan 2015

Quantification Of Food Waste Disposal In The United States: A Meta-Analysis, Krista L. Thyberg, David J. Tonjes, Jessica Gurevitch

Technology & Society Faculty Publications

Food waste has major consequences for social, nutritional, economic, and environmental issues, and yet the amount of food waste disposed in the U.S. has not been accurately quantified. We introduce the transparent and repeatable methods of meta-analysis and systematic reviewing to determine how much food is discarded in the U.S., and to determine if specific factors drive increased disposal. The aggregate proportion of food waste in U.S. municipal solid waste from 1995 to 2013 was found to be 0.147 (95% CI 0.137-0.157) of total waste, which is lower than that estimated by USEPA for the same period (0.176). The proportion …


The Effects Of Chanellization And Channel Restoration On Aquatic Habitat And Biota Of The Pecos River, New Mexico, Darrel J. Mecham Jan 2015

The Effects Of Chanellization And Channel Restoration On Aquatic Habitat And Biota Of The Pecos River, New Mexico, Darrel J. Mecham

Electronic Theses and Dissertations

River channelization has been shown to negatively impact riverine ecosystems by degrading aquatic habitat conditions, decreasing diversity of both fish and aquatic invertebrate assemblages and impairing fish recruitment. As knowledge of the negative impacts of channelization has increased, so have channel restoration efforts. We evaluated a recent channel restoration project on the Pecos River, New Mexico by comparing abiotic and biotic conditions among five reaches of river, including the restored reach, an unchannelized reach and a channelized reach all prone to streamflow intermittence and an unchannelized reach and channelized reach more perennial in nature. Our first objective was to assess …


Dune And Coastal Evolution In Isla Salamanca National Park, Colombia, Juan Felipe Gómez Jan 2015

Dune And Coastal Evolution In Isla Salamanca National Park, Colombia, Juan Felipe Gómez

Theses and Dissertations (Comprehensive)

This project analyzes natural variables influencing the coastal and dune evolution in Isla Salamanca National Park (ISNP), a biosphere reserve and Ramsar site located in Colombia, on the Caribbean coast. Since at least the early 1950s, the park has been affected by eroding trends along most of the shoreline. Particularly, most modern dunes are located close to the coastline, forming scarped dunes regularly affected by storm wave-action.

The trends through time of rain, bathymetry and coastline changes during the last six decades were studied through statistical analysis, mapping of landscape features, and satellite images and historical aerial photograph …


Urban Flood Response Planning: Building Urban Resilience In Calgary And Toronto, Sarah Asrat Jan 2015

Urban Flood Response Planning: Building Urban Resilience In Calgary And Toronto, Sarah Asrat

Theses and Dissertations (Comprehensive)

Flooding is an increasing environmental concern for many Canadian cities. There is increasing awareness of climate change and its impacts on precipitation behavior and flooding in urban areas. Knowledge gaps were identified in the literature concerning urban flood response planning, uncertainty and preparedness planning. This study examines and compares urban flood response measures and resilience building for natural disasters in the Cities of Toronto and Calgary. Non-structural measures for flood risk reduction that include policies, decision-making and community engagement were examined by conducting a literature review and semi-structured interviews of individuals from six groups: provincial government, municipal government, conservation authority, …


My Water, My Rights: Ethics And Implications Of Water Privatization, Rachel Vandermyde Jan 2015

My Water, My Rights: Ethics And Implications Of Water Privatization, Rachel Vandermyde

Augustana Center for the Study of Ethics Essay Contest

No abstract provided.


Dynamic Surface Water-Groundwater Exchange In Tidal Freshwater Zones: Insights From The Christina River Basin (Delaware, Usa), Cole T. Musial Jan 2015

Dynamic Surface Water-Groundwater Exchange In Tidal Freshwater Zones: Insights From The Christina River Basin (Delaware, Usa), Cole T. Musial

Theses and Dissertations--Earth and Environmental Sciences

In coastal rivers, tides can propagate for tens to hundreds of kilometers inland beyond the saltwater line. Yet the influence of tides on river-aquifer connectivity and solute transport in tidal freshwater zones (TFZs) is largely unknown. We estimate that along the TFZ of White Clay Creek (Delaware, USA), more than 17% of river water exchanges through hyporheic and riparian storage zones due to tidal pumping alone. Additional hyporheic processes such as flow through bedforms likely contribute even more exchange. The turnover length associated with the tidal pumping process is 39 km, similar to turnover lengths for all hyporheic exchange processes …


Use Of Lidar-Derived Terrain And Vegetation Information In A Deciduous Forest In Kentucky, Wesley A. Staats Jan 2015

Use Of Lidar-Derived Terrain And Vegetation Information In A Deciduous Forest In Kentucky, Wesley A. Staats

Theses and Dissertations--Forestry and Natural Resources

The use of Light Detection and Ranging (LiDAR) information is gaining popularity, however its use has been limited in deciduous forests. This thesis describes two studies using LiDAR data in an Eastern Kentucky deciduous forest. The first study quantifies vertical error of LiDAR derived digital elevation models (DEMs) which describe the forests terrain. The study uses a new method which eliminates Global Positioning System (GPS) error. The study found that slope and slope variability both significantly affect DEM error and should be taken in to account when using LiDAR derived DEMs. The second study uses LiDAR derived forest vegetation and …