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Articles 1 - 30 of 1313
Full-Text Articles in Physical Sciences and Mathematics
Nevada Interagency Volunteer Program: Helping Hands Across Public Lands – Phase Ii: Quarterly Progress Report, Period Covering October 1 – December 31, 2008, Margaret N. Rees
Nevada Interagency Volunteer Program: Helping Hands Across Public Lands – Phase Ii: Quarterly Progress Report, Period Covering October 1 – December 31, 2008, Margaret N. Rees
Get Outdoors Nevada
- The number of records in the volunteer database increased 8% over last quarter. The database now contains 6,431 records.
- Website activity increased, recording an average of 56,013 hits per month, an increase of 6% from last quarter, with an average of 5,211 pages viewed per month.
- Volunteer fall training has been completed.
- Three National Public Land Day and National Family Events have been completed.
- Two hundred and five people attended the Volunteer Recognition Event.
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending December 31, 2008, Margaret N. Rees
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending December 31, 2008, Margaret N. Rees
Wildlife Monitoring
Project 1. Relict Leopard Frog Monitoring, Management, and Research
- All milestones and deliverables associated with the MSHCP project are on schedule
- Completion of 2008 monitoring survey efforts
- Coordination is ongoing to identify potential translocation sites, including assisting efforts to identify a potential site in the western Grand Canyon
- RLFCT meeting hosted and minutes of meeting drafted
- Annual report provided to RLFCT, final draft in review
- Sampling for the amphibian chytrid fungus conducted at many sites
Project 2. Bald Eagle Winter Monitoring and Evaluation
- All MSHCP milestones and deliverables are on schedule
- Planning and coordination of the 2009 Eagle Count conducted …
Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Quarterly Report, Period Ending December 31, 2008, Margaret N. Rees
Limnological Studies
Project 1: Technical input has been provided at four advisory team meetings attended this quarter.
Project 2: A formal report titled, Surface Water Monitoring for Indicator Bacteria in High-use Sites of the Lake Mead National Recreation Area, has been prepared; an accompanying poster presentation for the Lake Mead Science Symposium is in preparation.
Project 3: A draft document titled, “Interagency Monitoring Action Plan (I-MAP): Quagga Mussels in Lakes Mead and Mohave” has been presented to an interagency core group to review and input. Six oral presentations related to quagga mussels are in preparation by this group for the Lake Mead …
Photosynthetic Response Of Soybean To Twospotted Spider Mite (Acari: Tetranychydae) Injury, Adeney De Freitas Bueno, Regiane Cristina Oliveira De Freitas Bueno, Paul David Nabity, Leon George Higley, Odair Aparecido Fernandes
Photosynthetic Response Of Soybean To Twospotted Spider Mite (Acari: Tetranychydae) Injury, Adeney De Freitas Bueno, Regiane Cristina Oliveira De Freitas Bueno, Paul David Nabity, Leon George Higley, Odair Aparecido Fernandes
School of Natural Resources: Faculty Publications
The twospotted spider mite Tetranychus urticae Koch is a common pest on soybean plants. To clarify plantarthropod interaction on mite-soybean system, leaf fluorescence, photosynthetic responses to variable carbon dioxide levels, and chlorophyll content were evaluated. Significant photosynthetic rate reduction was observed due to stomatal limitation. Stomatal closure was the major plant physiological response. As a consequence, there was reduction in photosynthetic rates. Surprisingly, plants did not show chlorophyll content reduction associated with photosynthetic impairment. No differences in fluorescence data indicate that T. urticae injury did not impair the function of light harvesting and photoelectron transport. These results showed that T. …
Quantifying The Effects Of Land Use Change On Stream Ecosystems For Use In Ecological Risk Assessment, Katherine Sciera
Quantifying The Effects Of Land Use Change On Stream Ecosystems For Use In Ecological Risk Assessment, Katherine Sciera
All Dissertations
Land disturbance often results in a cascade of physical and chemical stressors to aquatic ecosystems which can impact their biotic integrity. This study examined three developing watersheds near Greenville, SC to evaluate the quantitative relationships between the physical stressors associated with land use alterations and biotic integrity. More specifically, the objectives of this study were to 1) quantify the mechanisms of aquatic ecosystem degradation in streams impacted by watershed urbanization, 2) demonstrate the use of quantitative relationships among the physical, chemical, and biological stressors associated with land use change in an established ecological risk assessment framework, and 3) identify the …
Surface Energy Balance And Melt Thresholds Over 11 Years At Taylor Glacier, Antarctica, Matthew James Hoffman, Andrew G. Fountain, Glen E. Liston
Surface Energy Balance And Melt Thresholds Over 11 Years At Taylor Glacier, Antarctica, Matthew James Hoffman, Andrew G. Fountain, Glen E. Liston
Geography Faculty Publications and Presentations
In the McMurdo Dry Valleys, Victoria Land, Antarctica, melting of glacial ice is the primary source of water to streams, lakes, and associated ecosystems. To understand geochemical fluxes and ecological responses to past and future climates requires a physically based energy balance model. We applied a one-dimensional model to one site on Taylor Glacier using 11 years of daily meteorological data and seasonal ablation measurements. Inclusion of transmission of solar radiation into the ice was necessary to accurately model summer ablation and ice temperatures. Results showed good correspondence between calculated and measured ablation and ice temperatures over the 11 years. …
Agenda: Managing Oil And Gas Development In Colorado: The New Cogcc Rules, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Managing Oil And Gas Development In Colorado: The New Cogcc Rules, University Of Colorado Boulder. Natural Resources Law Center
Managing Oil and Gas Development in Colorado: The New COGCC Rules (December 16)
NRLC Hot Topic held on December 16, 2008 from 12:00 noon to 1:30 p.m. at the offices of Hogan and Hartson, Denver, Colorado.
Panelists from COGCC, the oil & gas industry, and environmental community, will present their perspectives on the soon-to-be-issued rules on oil and development in Colorado. Discussion and questions from attendees will follow.
Organic Chemostratigraphic Markers Characteristic Of The (Informally Designated) Anthropocene Epoch, Michael A. Kruge
Organic Chemostratigraphic Markers Characteristic Of The (Informally Designated) Anthropocene Epoch, Michael A. Kruge
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
Recognizing the tremendous collective impact of humans on the environment in the industrial age, the proposed designation of the current time period as the Anthropocene Epoch has considerable merit. One of the signature activities during this time continues to be the intensive extraction, processing, and combustion of fossil fuels. While fossil fuels themselves are naturally-occurring, they are most often millions of years old and associated with deeply buried strata. They may be found at the surface, for example, as natural oil seeps or coal seam outcrops, but these are relatively rare occurrences. Fossil fuels and their myriad by-products become the …
Geochemical Impacts From Permanganate Oxidation Based On Field Scale Assessments., Kelly Ann Moore
Geochemical Impacts From Permanganate Oxidation Based On Field Scale Assessments., Kelly Ann Moore
Electronic Theses and Dissertations
In situ chemical oxidation (ISCO) using permanganate is a technology for treatment of organic hazardous wastes. This research is a review of 30 permanganate (MnO4-) ISCO sites to determine whether there are long term impacts on groundwater quality due to the introduction of the oxidant into the subsurface. A second objective is to determine if manganese concentration can be predicted by trends in specific pre and postoxidation monitored parameters (i.e., pH and oxidation reduction potential (ORP)). The final objective is to identify the effects of site and design conditions on groundwater conditions postoxidation. Results indicate that (1) …
Agenda: Evolving Regional Frameworks For Ag-To-Urban Water Transfers, University Of Colorado Boulder. Natural Resources Law Center, Western Water Policy Program, Western Water Assessment (Program), Red Lodge Clearinghouse
Agenda: Evolving Regional Frameworks For Ag-To-Urban Water Transfers, University Of Colorado Boulder. Natural Resources Law Center, Western Water Policy Program, Western Water Assessment (Program), Red Lodge Clearinghouse
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
The permanent transfer of water from agricultural users to municipalities has become a common feature of water management in several western states. In many cases, these voluntary market‐based transfers provide significant benefits to both the buyers and sellers, but many third parties—including remaining irrigators, rural businesses and communities dependent upon agricultural economies—have been negatively impacted. While some impacts of these so‐called “buy and dry” transfers are largely unavoidable, many can be lessened by temporary arrangements that only shift water to cities in years when municipal supplies are inadequate, such as drought and post‐drought storage recovery, and by consolidating individual farm‐to‐city …
Slides: Pvid/Mwd Land Management, Crop Rotation And Water Supply Program, Ed Smith
Slides: Pvid/Mwd Land Management, Crop Rotation And Water Supply Program, Ed Smith
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
Presenter: Ed Smith, General Manager, Palo Verde Irrigation District, Southern California
25 slides
Slides: Lower Arkansas Valley Super Ditch Company, Inc.: Water Leasing Program, Peter Nichols
Slides: Lower Arkansas Valley Super Ditch Company, Inc.: Water Leasing Program, Peter Nichols
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
Presenter: Peter Nichols, General Counsel of the Lower Arkansas Valley “Super Ditch” Company, Trout, Raley, Montano, Witwer & Freeman PC, Colorado
33 slides
Slides: Idaho Rental Pool: Rules And Procedures, Idaho Water Resource Board, Jerry R. Rigby
Slides: Idaho Rental Pool: Rules And Procedures, Idaho Water Resource Board, Jerry R. Rigby
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
Presenter: Jerry Rigby, Counsel for Fremont‐Madison Irrigation District, Rigby, Thatcher, Andrus, Rigby & Moeller, Idaho
25 slides
Early Post-Fire Recovery On A Heavily Visited Mojave Desert Burn: Red Rock Canyon Near Las Vegas, Nevada, Scott R. Abella, E. Cayenne Engel, Christina L. Lund, Jessica E. Spencer
Early Post-Fire Recovery On A Heavily Visited Mojave Desert Burn: Red Rock Canyon Near Las Vegas, Nevada, Scott R. Abella, E. Cayenne Engel, Christina L. Lund, Jessica E. Spencer
Fire Science Presentations
Wildfire has become widespread in southwestern USA deserts. In a record 2005 fire season in the Mojave Desert, for example, more than 385,000 hectares burned (Brooks and Matchett 2006). This burned area is approximately 3% of the entire Mojave Desert. Fueled in large part by exotic annual grasses, these fires burned desert ecosystems thought to have only burned infrequently historically. Burns now occupy significant portions of desert landscapes, posing prominent management challenges. Improving our understanding of plant recovery on desert burns is important for evaluating future fire hazard, whether natural revegetation will meet management objectives, and for planning active revegetation …
Using A Diverse Seed Mix To Establish Native Plants On A Sonoran Desert Burn, Scott R. Abella, John L. Gunn, Mark L. Daniels, Judith D. Springer, Susan E. Nyoka
Using A Diverse Seed Mix To Establish Native Plants On A Sonoran Desert Burn, Scott R. Abella, John L. Gunn, Mark L. Daniels, Judith D. Springer, Susan E. Nyoka
Fire Science Presentations
- Revegetating burned areas is a formidable challenge facing resource managers in southwestern United States arid lands.
- Natural revegetation of desert burns by native species may be slow, or dominated by exotic annual grasses that perpetuate a frequent-fire regime.
- Resource managers may have several reasons for actively revegetating burns with native species, such as for providing competition with exotic species, minimizing soil erosion and dust pollution, and improving aesthetics.
- The use of native species in revegetation has been limited by a lack of available seed and by findings that native desert species are difficult to establish (e.g., Bainbridge and Virginia 1990, …
Post-Fire Plant Recovery In The Mojave And Sonoran Deserts Of Western North America, Scott R. Abella, Public Lands Institute, Department Of Environmental Studies, University Of Nevada, Las Vegas
Post-Fire Plant Recovery In The Mojave And Sonoran Deserts Of Western North America, Scott R. Abella, Public Lands Institute, Department Of Environmental Studies, University Of Nevada, Las Vegas
Fire Science Presentations
Fire is thought to have been generally rare historically in the Mojave and Sonoran Deserts. However, invasion by exotic grasses (e.g., Schismus spp.) has increased fuel continuity, promoting fire in these deserts. Succession and recovery are not well understood processes in deserts, nonetheless for a novel disturbance like fire. In addition to helping build theories of desert succession and recovery, information on post-fire recovery has numerous practical implications (e.g., determining whether active revegetation is needed). Systematic reviews provide a means for obtaining literature using reproducible search criteria. This approach facilitates a balanced appraisal of available information, synthesizes scattered literature, and …
Transforming Water: Water Efficiency As Stimulus And Long‐Term Investment, David Mitchell, Janice Beecher, Thomas Chesnutt, David Pekelney
Transforming Water: Water Efficiency As Stimulus And Long‐Term Investment, David Mitchell, Janice Beecher, Thomas Chesnutt, David Pekelney
Publications (WR)
Water Efficiency programs have an established track record as cost‐effective long‐term public resource investments. Less well understood are the short‐term economic impacts of these rapidly scalable and adaptable programs, and the ability of these programs to quickly deliver economic benefit as well as sustainable solutions. This paper quantitatively examines the short‐term economic growth impacts of water/energy efficiency investments, specifically in terms of job creation, income, GDP, national output, water savings, and other benefits.
Our consultant team modeled a wide range of water/energy efficiency program possibilities, across all water‐using sectors and involving indoor, outdoor, and water system efficiencies. This modeling clearly …
Giant Sequoia Insect, Disease, And Ecosystem Interactions, Douglas D. Piirto
Giant Sequoia Insect, Disease, And Ecosystem Interactions, Douglas D. Piirto
Douglas D. Piirto
Individual trees of giant sequoia (Sequoia gigantea [Lindl.] Decne.) have demonstrated a capacity to attain both a long life and very large size. It is not uncommon to find old-growth giant sequoia trees in their native range that are 1,500 years old and over 15 feet in diameter at breast height. The ability of individual giant sequoia trees to survive over such long periods of time has often been attributed to the species high resistance to disease, insect, and fire damage. Such a statement, however, is a gross oversimplification, given broader ecosystem and temporal interactions. For example, why isn't there …
Efficacy Of Herbicide Application Methods Used To Control Tanoak (Lithocarpus Densiflorus) In An Uneven-Aged Coast Redwood Management Context, Douglas D. Piirto, Brenda Smith, Eric K. Huff, Scott T. Robinson
Efficacy Of Herbicide Application Methods Used To Control Tanoak (Lithocarpus Densiflorus) In An Uneven-Aged Coast Redwood Management Context, Douglas D. Piirto, Brenda Smith, Eric K. Huff, Scott T. Robinson
Douglas D. Piirto
Three methods of tanoak (Lithocarpus densiflorus [Hook. & Arn.] Rehd.) control involving the application of the amine or ester form of triclopyr were evaluated in this coast redwood uneven-aged forest management study of herbicides. A cut-stump application with the amine form of triclopyr (Garlon 3A), frill cut with the amine form of triclopyr, basal-bark (outer surface) with the ester form of triclopyr (Garlon 4), and an untreated control were replicated three times. The tanoak control results in Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and/ or coast redwood (Sequoia sempervirens [D. Don] Endl.) predominated stands obtained in earlier studies …
Cost-Effective Fire Management For Southern California's Chaparral Wilderness: An Analytical Procedure, Chris A. Childers, Douglas D. Piirto
Cost-Effective Fire Management For Southern California's Chaparral Wilderness: An Analytical Procedure, Chris A. Childers, Douglas D. Piirto
Douglas D. Piirto
Fire management has always meant fire suppression to the managers of the chaparral covered southern California National Forests. Today, Forest Service fire management programs must be cost effective, while wilderness fire management objectives are aimed at recreating natural fire regimes. A cost-effectiveness analysis has been developed to compare fire management options for meeting these objectives in California's chaparral wilderness. This paper describes the analytical procedure using examples from a study currently being conducted for the Los Padres National Forest, and discusses some preliminary results.
Hydrochemistry Of Wetlands Along The Platte River Near Ashland, Nebraska, Carrie L. Wiese
Hydrochemistry Of Wetlands Along The Platte River Near Ashland, Nebraska, Carrie L. Wiese
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
A Socioeconomic Study Of The Non-Industrial Private Forest Landowner Wood Supply Chain Link In The Cumberland Plateau Region Of Tennessee, Kevin Patrick Hoyt
A Socioeconomic Study Of The Non-Industrial Private Forest Landowner Wood Supply Chain Link In The Cumberland Plateau Region Of Tennessee, Kevin Patrick Hoyt
Doctoral Dissertations
The Cumberland Plateau in Tennessee currently is experiencing widespread forest parcelization and changes in species composition as a result of changes in land use and ownership. These changes can be attributed partially to industrial forest land divestiture, the lingering effects of the 1998 – 2002 Southern Pine Beetle (SPB) epidemic, and expanding development due to increasing population growth. The region has recently become a focus of debate concerning land use change, land management practices, and the effects on biodiversity.
A stratified random sample of 1600 Nonindustrial Private Forest (NIPF) landowners owning 40 or more acres of forestland were surveyed obtaining …
Forestry Extension In Tennessee: Comparing Traditional And Web-Based Program Delivery Methods, Samuel Wayne Jackson
Forestry Extension In Tennessee: Comparing Traditional And Web-Based Program Delivery Methods, Samuel Wayne Jackson
Doctoral Dissertations
As the traditional forestry Extension clientele in Tennessee changes, Extension professionals need to adapt and deliver programs in such a way as to reach the maximum audience while ensuring the educational benefit of the program and remaining within budget. The development of the Internet and associated web-based programs presents a new tool by which Extension professionals can develop and deliver educational programs to clientele.
This study compared two Extension program delivery methods, web-based and traditional field-based. A series of field workshops were held and participants were surveyed. From these field workshops, a web-based program was developed and was marketed to …
Fixing The Leaky Pipe: Increasing Recruitment Of Underrepresented Groups In Ecology, Brian L. Bingham, Lisette E. Torres
Fixing The Leaky Pipe: Increasing Recruitment Of Underrepresented Groups In Ecology, Brian L. Bingham, Lisette E. Torres
Environmental Sciences Faculty and Staff Publications
Many students from underrepresented groups lack adequate opportunities and mentorship as they head through the “pipeline” to graduate school. Despite the need for unique perspectives in collaborative scientific research, ethnic minority students continue to “leak” from the system. Here, I present some points for consideration for academic professionals (including educators, administrators, and program managers), based on the first-hand experiences of successful minority scientists.
Green Roofs For A Green Town: Possibilities Of Green Roof Implementation In The Town Of Normal, Lindsey Sihau, '09
Green Roofs For A Green Town: Possibilities Of Green Roof Implementation In The Town Of Normal, Lindsey Sihau, '09
Outstanding Senior Seminar Papers
Green roofs have been growing in popularity throughout the world. Scientists have been studying them since the 1980’s. This research project reviews the literature regarding both the benefits and barriers to green roof construction and management. Policies around the nation are then examined and analyzed. Suggestions are made regarding possible additions to the local Stormwater Management Policy that would emphasize the importance of sustainable building techniques such as green roofs, and hopefully offer incentive to their implementation.
What Impact Does Sustainable Certification Have? A Comparison Of Aquatic Nitrate And Phosphate Levels Between Two Golf Courses In The Bloomington-Normal Community, Jason Koval, '09
What Impact Does Sustainable Certification Have? A Comparison Of Aquatic Nitrate And Phosphate Levels Between Two Golf Courses In The Bloomington-Normal Community, Jason Koval, '09
Outstanding Senior Seminar Papers
Two golf courses in the Bloomington-Normal community in central Illinois were tested for nitrate and phosphate concentrations in their ponds. One golf course (The Den) is Audubon International certified while the other golf course (Ironwood) is not. This study tries to establish if differing environmental management practices can contribute to significantly different concentrations of nutrients. It was determined that the nitrate concentration was higher at the non-certified golf course, while the phosphate concentrations at both courses were essentially negligible. The implications of these findings are discussed and were presented to both golf courses. It is the hope of this paper …
The Feasibility Of Implementing Farm To School Programs In Bloomington-Normal Public Schools, Margaret Kane, '09
The Feasibility Of Implementing Farm To School Programs In Bloomington-Normal Public Schools, Margaret Kane, '09
Outstanding Senior Seminar Papers
Farm to School programs promote partnerships between local farmers and school districts in which farmers can provide fresh organic produce for school meals and education about sustainable agriculture. A focus on local and organic foods has a variety of benefits that affect the environmental, health, and community. This study explores opportunities for Farm to School programs in Bloomington-Normal public schools, and concludes that a this type of program would be feasible in Normal, although there are quite a few barriers to overcome before implementation would be possible.
Environmental Evaluation Of A Quaternary Wastewater Treatment Wetland, Olivia Demeo, '09
Environmental Evaluation Of A Quaternary Wastewater Treatment Wetland, Olivia Demeo, '09
Outstanding Senior Seminar Papers
Constructed wetlands for wastewater treatment have become a sustainable alternative to environmentally harmful traditional wastewater treatment methods. This case study evaluated the Schroeder Wildlife Sanctuary, a wetland area constructed for removal of nutrients from wastewater. An environmental evaluation of the wetland was completed that addressed three parameters: the water quality of wetland effluent, the avian biodiversity within the sanctuary, and an assessment of community outreach and education initiatives. Water quality testing was conducted using rudimentary LaMotte and Hach testing kits. The data was contrary to the literature and showed no nutrient removal occurring. However, the results were inconclusive because the …
The Feasibility Of Incorporating Sustainable Materials In The Design Of Habitat For Humanity Homes, Meaghan Collins, '09
The Feasibility Of Incorporating Sustainable Materials In The Design Of Habitat For Humanity Homes, Meaghan Collins, '09
Outstanding Senior Seminar Papers
The concept of sustainable design has been one of increasing interest with regards to both personal choices and desire to reduce human impacts on the environment. This paper looks at the concept of sustainable housing design and why it is important. Particularly, it focuses on sustainable housing designs and materials that the McLean County Chapter of Habitat for Humanity can incorporate into the construction of its homes. This paper investigates three types of sustainable construction materials, flooring, cabinetry, and paints that Habitat for Humanity could incorporate into its homes.
On The Movement Of Beluga Whales In Cook Inlet, Alaska: Simulations Of Tidal And Environmental Impacts Using A Hydrodynamic Inundation Model, Tal Ezer, Roderick Hobbs, Lie-Yauw Oey
On The Movement Of Beluga Whales In Cook Inlet, Alaska: Simulations Of Tidal And Environmental Impacts Using A Hydrodynamic Inundation Model, Tal Ezer, Roderick Hobbs, Lie-Yauw Oey
CCPO Publications
The population of beluga whales in Cook Inlet, Alaska, is in decline, and since 2000 these whales have been under consideration for designation as "endangered" under the Endangered Species Act (and were placed on the list in October 2008, just before this article went to press). In order to study environmental and hydrodynamic impacts on the belugas' movements and survival in the unique habitat of the inlet, a three-dimensional ocean circulation and inundation model is combined with satellite-tracked beluga whale data. Model-wale data comparisons from two whale paths during a five-day period (september 17-21, 2000) covering 10 tidal cycles suggest …