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Articles 61 - 90 of 226

Full-Text Articles in Natural Resources Management and Policy

Relating Surface Backscatter Response From Trmm Precipitation Radar To Soil Moisture: Results Over A Semi-Arid Region, Haroon Stephen, Sajjad Ahmad, Thomas C. Piechota, Chunling Tang Jan 2010

Relating Surface Backscatter Response From Trmm Precipitation Radar To Soil Moisture: Results Over A Semi-Arid Region, Haroon Stephen, Sajjad Ahmad, Thomas C. Piechota, Chunling Tang

Public Policy and Leadership Faculty Research

The Tropical Rainfall Measuring Mission (TRMM) carries aboard the Precipitation Radar (TRMMPR) that measures the backscatter (σº) of the surface. σº is sensitive to surface soil moisture and vegetation conditions. Due to sparse vegetation in arid and semi-arid regions, TRMMPR σº primarily depends on the soil water content. In this study we relate TRMMPR σº measurements to soil water content (m(s)) in the Lower Colorado River Basin (LCRB). σº dependence on ms is studied for different vegetation greenness values determined through Normalized Difference Vegetation Index (NDVI). A new model of σº that couples incidence angle, m(s), and NDVI is used …


Joint Fire Science Program – Lake Mead National Recreation Area Revegetating Burned Arid Lands: Identifying Successful Native Species Using Trait And Competition Analysis: Quarterly Progress Report, Time Period: October 1 — December 31, 2009, Margaret N. Rees Dec 2009

Joint Fire Science Program – Lake Mead National Recreation Area Revegetating Burned Arid Lands: Identifying Successful Native Species Using Trait And Competition Analysis: Quarterly Progress Report, Time Period: October 1 — December 31, 2009, Margaret N. Rees

Fire Science

• Article accepted for publication in Journal of Arid Environments.

• Recharged irrigation gel packs for outplanting and watered seed plots at Goodsprings site.

• Completed full year of seed granivory trials at Goodsprings site.

• Presented information on this Task Agreement to 4th International Fire Ecology and Management Congress.

• Maintained nursery plots and added installment of nitrogen treatment.


Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, July 1, 2009 To September 30, 2009, Margaret N. Rees Oct 2009

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, July 1, 2009 To September 30, 2009, Margaret N. Rees

Vegetation Monitoring

Executive Summary

  • Weed Sentry staff surveyed over 55 miles and 311 acres (most of which was conducted by foot) this quarter.
  • Planning for future Brassica tournefortii research projects has been implemented through collaboration between PLI and NPS staff.
  • Preliminary results from ongoing Brassica tournefortii projects indicate little effect of disturbance on abundance of the species, but, as expected, the species benefitted with increased water availability
  • Rare plant data monitoring and data entry for this season is complete.
  • Pre-planning activities for the upcoming Northshore Road restoration plantings and evaluation were initiated.
  • Gypsum restoration research is ongoing, data are being analyzed and …


Policy Overview And Options For Maximizing The Role Of Policy In Geothermal Electricity Development, Elizabeth Doris, Claire Kreycik, Katherine Young Sep 2009

Policy Overview And Options For Maximizing The Role Of Policy In Geothermal Electricity Development, Elizabeth Doris, Claire Kreycik, Katherine Young

Publications (E)

Geothermal electricity production1 capacity has grown over time because of multiple factors, including its renewable, baseload, and domestic attributes; volatile and high prices for competing technologies; and policy intervention. Overarching federal policies, namely the Public Utilities Regulatory Policies Act (PURPA),2 provided certainty to project investors in the 1980s, leading to a boom in geothermal development. In addition to market expansion through PURPA, research and development policies provided an investment of public dollars toward developing technologies and reducing costs over time to increase the market competitiveness of geothermal electricity. Together, these efforts are cited as the primary policy drivers for the …


Clean-Energy Policy Community Town Hall: Part A, Al Gore, Harry Reid, T. Boone Pickens, Cathy Zoi Aug 2009

Clean-Energy Policy Community Town Hall: Part A, Al Gore, Harry Reid, T. Boone Pickens, Cathy Zoi

National Clean Energy Summit

Moderator: John D. Podesta, President & CEO, Center for American Progress Action Fund


Special Remarks By President Bill Clinton, Bill Clinton Aug 2009

Special Remarks By President Bill Clinton, Bill Clinton

National Clean Energy Summit

Special remarks by President Bill Clinton


Roundtable: Building The Clean-Energy Economy: Part B, Neal Smatresk, Harry Reid, Al Gore, John D. Podesta Aug 2009

Roundtable: Building The Clean-Energy Economy: Part B, Neal Smatresk, Harry Reid, Al Gore, John D. Podesta

National Clean Energy Summit

Moderator: Tim Wirth, Former Colorado Senator, United Nations Foundation


Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, April 1, 2009 To June 30, 2009, Margaret N. Rees Jul 2009

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, April 1, 2009 To June 30, 2009, Margaret N. Rees

Vegetation Monitoring

Executive Summary

  • The Weed Sentry program surveyed over 187 miles (1,342 acres) of federal land by vehicle and foot in Clark County for incipient populations of exotic plants.
  • Weed Sentry staff continue to survey never before surveyed sites, and trails and regions within Upper Las Vegas Wash CTA and Sloan Canyon NCA as requested by BLM managers
  • In 2009 rare plant monitoring was completed. Data entry and analysis are in progress.


Sustainability Action Plan Booklet, Paul Andricopulos, Ned Thomas May 2009

Sustainability Action Plan Booklet, Paul Andricopulos, Ned Thomas

Publications (SD)

Learn about our commitment to maintaining a high quality of life while pursuing a progressive approach to environmental issues. Also, read about our guiding principles with information provided in the new Sustainability Action Plan booklet.


Interagency Science And Research: Final Project Report, Jennell M. Miller, Craig J. Palmer, Margaret N. Rees Apr 2009

Interagency Science And Research: Final Project Report, Jennell M. Miller, Craig J. Palmer, Margaret N. Rees

Interagency Science and Research Strategy

The major accomplishment of this project was the development of the SNAP Science and Research Strategy: an 11-chapter document designed to integrate and coordinate scientific research programs in Southern Nevada and improve the efficiency and effectiveness of these programs. The Strategy is intended to inform and guide SNAP agencies in identifying and articulating highest priority science and research needs, sharing resources and funds from other sources, and eliminating redundancy between research programs within their focus areas. The major focus areas of the Strategy are Fire, Invasive Species, Watersheds and Landscapes, Biodiversity, Cultural Resources, Historic Content, Recreation, Land Use, and Education. …


Epa’S Role In Promoting Water Efficiency, Mary Ann Dickinson Mar 2009

Epa’S Role In Promoting Water Efficiency, Mary Ann Dickinson

Publications (WR)

The Alliance for Water Efficiency is pleased to appear before you today to offer views on activities and programs to improve water efficiency throughout the United States. We are a North American non‐profit organization, composed of diverse stakeholders with significant experience in water conservation programs and policies. Our mission is to promote the efficient and sustainable use of water, to promote cost‐effective water efficiency measures that will reduce wasteful consumption, reduce the need for additional drinking water and waste water capacity, and provide multiple energy, economic, and environmental benefits. And in that mission, we work closely with staff at the …


Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, January 1, 2009 To March 31, 2009, Margaret N. Rees Mar 2009

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, January 1, 2009 To March 31, 2009, Margaret N. Rees

Vegetation Monitoring

Executive Summary

  • The Weed Sentry program surveyed over 126 miles (981 acres) of federal land by vehicle and foot in Clark County for incipient populations of exotic plants.
  • Weed Sentry staff continue to survey never before surveyed sites, and trails and regions within Red Rock and Sloan Canyon NCAs requested by BLM managers.
  • The 2009 rare plant monitoring was initiated and in progress.
  • Northshore Road reconstruction monitoring was initiated and active monitoring and care of salvaged plants was performed by UNLV staff.
  • Rana onca vegetation monitoring and reporting was completed.


Strategic Data Mining And Database Development For Research Projects At Lake Mead, Nevada-Arizona Usa, James Pollard, Gretchen M. Andrew Jan 2009

Strategic Data Mining And Database Development For Research Projects At Lake Mead, Nevada-Arizona Usa, James Pollard, Gretchen M. Andrew

Lake Mead Science Symposium

“Water 2025” is a Department of Interior initiative designed to guide the management of scarce water resources in the American West. As an important Colorado River reservoir, Lake Mead is a fundamental component of Water 2025. For Water 2025 to achieve its goals, comprehensive knowledge is needed of historic and current Lake Mead water quality data. A task agreement between the National Park Service and the University of Nevada, Las Vegas provides for a strategic data mining project to identify research and monitoring projects on Lake Mead that have been conducted in the past, prioritize relevant projects, and ensure data …


History Of Contaminant Inputs Into Lake Mead Derived From Sediment Cores, Michael R. Rosen, Peter C. Van Metre, David Alvarez, Kathy R. Echols, Steven L. Goodbred Jan 2009

History Of Contaminant Inputs Into Lake Mead Derived From Sediment Cores, Michael R. Rosen, Peter C. Van Metre, David Alvarez, Kathy R. Echols, Steven L. Goodbred

Lake Mead Science Symposium

Assessing the changes in contaminant inputs (both organic and inorganic) over time is important in determining sources and sinks of these inputs. Variations in contaminant input were assessed in four sediment cores taken in 1998 from three different parts of Lake Mead (two from Las Vegas Bay and one from Overton Arm and Virgin Basin). Sediments were analyzed for major and trace elements, radionuclides, and organic compounds. Anthropogenic contaminant concentrations are greatest in Las Vegas Bay reflecting inputs from the Las Vegas urban area, although concentrations are low compared to sediment quality guidelines and to other USA lakes. One exception …


Progress In Strategic Research Areas, Scott R. Abella Jan 2009

Progress In Strategic Research Areas, Scott R. Abella

Public Policy and Leadership Faculty Research

Three years ago through conversations with resource managers, assessing the status of knowledge of the scientific literature, and our own interests, we set forth several strategic research areas that we believed would be timely for advancing Mojave Desert conservation and management.


The Environmental And Economic Benefits Of Highway Access Management: A Multivariate Analysis Using System Dynamics, Dan Andersen Dec 2008

The Environmental And Economic Benefits Of Highway Access Management: A Multivariate Analysis Using System Dynamics, Dan Andersen

UNLV Theses, Dissertations, Professional Papers, and Capstones

Better management of highway operations can be achieved, in part, by controlling vehicular access to adjacent properties and cross streets. This tactic, referred to as access management, has proven safety and operational benefits. However, doubts remain regarding its environmental and economic benefits.

I hypothesize that one environmental indicator, carbon emissions, will decrease with proper access management. Controlling access increases the speed at which vehicles travel, improving fuel efficiency and reducing carbon emissions. My hypothesis relative to financial impacts is that access management will neither help nor harm businesses. Controlling access can reduce travel time which has the effect of increasing …


Modeling Natural Resources Scarcity And Proverty Effects On Fertility In Honduras, Nepal, And Tanzania, Ayoub Shaban Ayoub Nov 2008

Modeling Natural Resources Scarcity And Proverty Effects On Fertility In Honduras, Nepal, And Tanzania, Ayoub Shaban Ayoub

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation examines whether the vicious circle theory applies in three developing countries characterized by high population growth. According to the vicious circle theory, natural resource scarcity coupled with poverty leads to population growth via positive effects on fertility particularly in rural areas of developing countries. Population growth then leads to a further increase in natural resource scarcity, creating a "feedback loop." This is the first study to use micro-level data to test and control for endogeneity using a two-stage Probit model (IVPROBIT). The existing literature has largely failed to address endogeneity in the relationship between natural resource scarcity and …


The University As Your Partner: Adding Value To Conservation Initiatives, Margaret N. Rees, Public Lands Institute Oct 2008

The University As Your Partner: Adding Value To Conservation Initiatives, Margaret N. Rees, Public Lands Institute

Presentations (PLI)

The Public Lands Institute is dedicated to strengthening the national fabric that is essential for the protection, conservation, multiple use, and management of public lands


Adaptive Management Report For The Clark County, Nevada Multiple Species Habitat Conservation Plan, Desert Conservation Program Oct 2008

Adaptive Management Report For The Clark County, Nevada Multiple Species Habitat Conservation Plan, Desert Conservation Program

Publications (C)

The Desert Conservation Program administers an incidental take permit for desert tortoise and 77 other species. The permit was issued in 2001 by the United States Fish and Wildlife Service in accordance with the Endangered Species Act. Compliance with the permit requires implementation of the Clark County Multiple Species Habitat Conservation Plan. This plan requires an adaptive management program and a biennial report by an independent science advisor to assess the status of the plan and make recommendations for future funding. The 2008 Adaptive Management Report reviews current data on land use trends, habitat loss, species status, plan implementation, programmatic …


Interagency Science And Research: Quarterly Progress Report, Period Ending September 30, 2008, Margaret N. Rees Sep 2008

Interagency Science And Research: Quarterly Progress Report, Period Ending September 30, 2008, Margaret N. Rees

Interagency Science and Research Strategy

  • The major focus this quarter has been on completing a draft of the SNAP Science and Research Strategy and distributing it for internal and external review.


Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Year-End Progress Report, October 1, 2007 To September 30, 2008, Margaret N. Rees Sep 2008

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Year-End Progress Report, October 1, 2007 To September 30, 2008, Margaret N. Rees

Vegetation Monitoring

Executive Summary

  • The Weed Sentry program surveyed over 335 miles and 2,610 acres of transportation corridors on federal land in Clark County for incipient populations of exotic plants.
  • 18 manuscripts attained in-press or published status and one manuscript was submitted for review this year. Among published manuscripts, are one documenting Sahara mustard germination patterns (Western North American Naturalist), one assessing exotic species distributions in Clark County (Environmental Monitoring and Assessment), and another is a synthesis of burro effects on Mojave Desert vegetation (Environmental Management), and one assessing vegetation in grassy remnants of the Las Vegas Valley (Desert Plants)
  • Staff delivered …


Woody Biomass Energy Solutions, Scott Bell Aug 2008

Woody Biomass Energy Solutions, Scott Bell

UNLV Renewable Energy Symposium

The 2008 UNLV Renewable Energy Symposium was presented by the Office of Strategic Energy Programs and co-sponsored by the Division of Research and Graduate Studies on August 20, 2008 on the UNLV campus.

The event focused on renewable energy production in Nevada, the US Southwest, and renewable research projects nationwide. It was a great opportunity for anyone working on renewable projects to collaborate with others in this field and exchange information. Over 230 individuals attended the event this year.


National Clean Energy Summit Closing Remarks Keynote, Michael Bloomberg Aug 2008

National Clean Energy Summit Closing Remarks Keynote, Michael Bloomberg

National Clean Energy Summit

Closing remarks


Panel Iv: The Visible Hand: Government's Role In The Clean Energy Transformation: Opportunities To Accelerate Deployment Of Energy Efficiency And Renewable Energy, Bill Ritter, Jon Wellinghoff, Steven Chu, David Overskei, Jim Thomas Aug 2008

Panel Iv: The Visible Hand: Government's Role In The Clean Energy Transformation: Opportunities To Accelerate Deployment Of Energy Efficiency And Renewable Energy, Bill Ritter, Jon Wellinghoff, Steven Chu, David Overskei, Jim Thomas

National Clean Energy Summit

Panel discussion Moderator: John Podesta, President and CEO, Center for American Progress Action Fund


National Clean Energy Summit Midday Keynote, Jon Huntsman Aug 2008

National Clean Energy Summit Midday Keynote, Jon Huntsman

National Clean Energy Summit

Midday keynote


Panel Iii: Restoring American Leadership: Jobs, Growth, Communities, And Trade, Van Jones, Somer Hollingsworth, Ian Rogoff, Fred Redmond Aug 2008

Panel Iii: Restoring American Leadership: Jobs, Growth, Communities, And Trade, Van Jones, Somer Hollingsworth, Ian Rogoff, Fred Redmond

National Clean Energy Summit

Panel discussion Moderator: Danny Thompson, Executive Secretary-Treasurer, Nevada State AFL-CIO


Panel I: Earning More By Using Less: Businesses, Efficiency, And Renewable Energy, Janet Napolitano, Jim Murren, Jon Creyts, Michael Yackira, Rhone Resch Aug 2008

Panel I: Earning More By Using Less: Businesses, Efficiency, And Renewable Energy, Janet Napolitano, Jim Murren, Jon Creyts, Michael Yackira, Rhone Resch

National Clean Energy Summit

Panel discussion Moderator: Randolph Townsend, Nevada State Senator


National Clean Energy Summit Welcome Remarks & Morning Keynote, Rose Mckinney James, David Ashley, John Podesta, Harry Reid, T. Boone Pickens Aug 2008

National Clean Energy Summit Welcome Remarks & Morning Keynote, Rose Mckinney James, David Ashley, John Podesta, Harry Reid, T. Boone Pickens

National Clean Energy Summit

Welcome remarks & Morning keynote


Plant Recruitment In A Northern Arizona Ponderosa Pine Forest: Testing Seed- And Leaf Litter- Limitation Hypotheses, Scott R. Abella Aug 2008

Plant Recruitment In A Northern Arizona Ponderosa Pine Forest: Testing Seed- And Leaf Litter- Limitation Hypotheses, Scott R. Abella

Public Policy and Leadership Faculty Research

Seed availability and leaf litter limit plant establishment in some ecosystems. To evaluate the hypothesis that these factors limit understory plant recruitment in Pinus ponderosa forests, I conducted a seeding and litter removal experiment at six thinned sites in the Fort Valley Experimental Forest, northern Arizona. Experimental seeding of four native species (Penstemon virgatus, Erigeron formosissimus, Elymus elymoides, and Festuca arizonica) and raking of litter occurred in 2005. Seeding resulted in a substantial recruitment of 14 to 103 seedlings/m2 (1 to 10/ft2) one month after seeding for two species (P. virgatus and E. elymoides), but these densities subsequently declined by …


Legislative Committee On Public Lands, Margaret N. Rees Jul 2008

Legislative Committee On Public Lands, Margaret N. Rees

Presentations (PLI)

The Public Lands Institute is dedicated to strengthening the national fabric that is essential for the protection, conservation, multiple use, and management of public lands.