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Articles 1 - 30 of 770
Full-Text Articles in Physical Sciences and Mathematics
Cooperative Conservation: Increasing Capacity Through Community Partnerships -- Interagency Volunteer Program: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Get Outdoors Nevada
- Volunteer database increased 8% over last quarter. Database now contains 2,923 records.
- Website activity increased, recording an average of 51,568 hits per month, with an average of 4,985 pages viewed per month (12.4% increase in pages viewed).
- Team charter approved and signed by federal managers and IVP team.
- Volunteer orientation and training in 11 subject areas delivered to 80 volunteers.
- Recognition Banquet and Awards Ceremony recognized 180 volunteers.
- Volunteer event list revised for 2007.
Take Pride In America In Southern Nevada: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Take Pride In America In Southern Nevada: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Anti-littering Programs
• Don’t Trash Nevada roll-out event held on October 12, 2006.
• Program website launched.
• 74 people have taken the on-line anti-litter and dumping pledge.
• Public-private partnership with Republic Services of Southern Nevada generated $11,917.97 in donations to Don’t Trash Nevada.
• Conducted 3 volunteer and 1 alternative workforce clean-ups this quarter.
• Fulfilled deliverable of 12 clean-ups for 2006 (9 volunteer / 3 alternative workforce).
• 16 volunteer clean-ups scheduled for 2007. • Two tons of agency-generated paper recycled this quarter, saving 14,000 gallons of water, 34 trees, and almost 8 cubic yards of landfill space.
• …
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Wildlife Monitoring
- Research assistant hired for Relict Leopard Frog conservation project.
- High school minority intern hired to assist with research efforts.
- Nocturnal visual encounter surveys for Relict Leopard Frogs conducted at all established natural sites and at 6 of 7 translocation sites.
- Vegetation management conducted to decrease tamarisk cover along the stream at the Pupfish Refuge Spring – a Relict Leopard Frog translocation site.
- New draft guidelines and field count protocols developed for midwinter bald eagle count.
- Preliminary analysis and modeling of thrasher habitat selection conducted and sampling assessed
- Call-broadcast surveys for thrasher species conducted at 43 points countywide, focusing on vegetation …
Lake Mead National Recreation Area Vegetation Monitoring And Management: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Lake Mead National Recreation Area Vegetation Monitoring And Management: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Vegetation Monitoring
Executive Summary
- Two new Weed Sentry research assistants were hired.
- Weed Sentry staff surveyed for exotic species on 89 miles of roads on NPS and BLM land and treated more than 21,000 exotic plants in incipient populations.
- A grid-based rare plant monitoring method was tested this quarter.
- A manuscript detailing vegetation succession on a water pipeline at Lake Mead NRA was submitted for review to the journal Crossosoma.
- New integrative projects undertaken this quarter included establishing a competition study between a native grass and the exotic Sahara mustard, salvaging plants for research purposes from private sites with permission from landowners, …
Interagency Science And Research: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Interagency Science And Research: Quarterly Progress Report, Period Ending December 31, 2006, Margaret N. Rees
Interagency Science and Research Strategy
- Completed draft review and analysis of 6 interagency and 2 single-agency science strategies.
- Developed an outline for a Southern Nevada Agency Partnership Science Strategy based upon these reviews.
- Initiated a beta-test of a science proposal review process.
Factors Contributing To Dust Emissions In Clark County, Nevada Annual Performance Report: Period Ending December 29, 2006, Margaret N. Rees
Factors Contributing To Dust Emissions In Clark County, Nevada Annual Performance Report: Period Ending December 29, 2006, Margaret N. Rees
Dust Emissions from Public Lands
- A comparison of actual accomplishments with the goals and objectives established for the period, the findings of the investigator, or both. Whenever appropriate and the output of programs and projects can be readily quantified, such quantitative data should be related to cost data for computation of unit costs.
- University of Nevada, Public Lands Institute has met the requirement of section III.A.1 of Task Agreement FAA010017 to recruit and hire a postdoctoral scholar (or equivalent position) with research expertise in dust management issues. Dr. Dirk Goossens has extensive and specific experience in dust emissions research and will begin work on January …
Final Technical Report: Integrated Restoration Strategies Towards Weed Control On Western Rangelands, Robert Nowak
Final Technical Report: Integrated Restoration Strategies Towards Weed Control On Western Rangelands, Robert Nowak
All U.S. Government Documents (Utah Regional Depository)
Invasive species are having severe ecological (Mack et al. 2000) and economic (Pimentel et al. 2005) impacts on ecosystems around the world. Invasive species can alter many ecosystem processes (Crooks 2002, Walker & Smith 1997) including: water and nutrient availability, such as form and amount of N if the soil (Evans et al. 2001, Sperry et al. 2006); primary productivity, through shifts in growth rates or efficiency of resource use; disturbance regimes, including the type, frequency, and severity of disturbances such as fire (D’Antonio 2002); and community dynamics, such as species replacements (Alvarez & Cushman 2002). The economic losses and …
Interview With Ron Hays, Eagle Creek Natural Building, 2006 (Audio), Ron Hays
Interview With Ron Hays, Eagle Creek Natural Building, 2006 (Audio), Ron Hays
All Sustainability History Project Oral Histories
Interview of Ron Hays by Joe Arbow at SE Portland, Oregon on December 8th, 2006.
The interview index is available for download.
Water Quality Results From Indian Head River, Hanover, Ma
Water Quality Results From Indian Head River, Hanover, Ma
Watershed Access Lab Projects
No abstract provided.
Quashnet River Survey
Watershed Access Lab Projects
Students from Mashpee High School have been studying water quality of local rivers for a number of years. In the past, the primary focus was on two rivers that flow through the town: the Quashnet River, and Quaker Run. This school year (2006-07) the Mashpee River was added as the third watershed of interest. Each of three Earth Science classes adopted and studied one of the rivers. Students sampled each stream at headwaters and lower reaches for: macroinvertebrates, water chemistry (temperature, pH, dissolved oxygen, nitrates, and turbidity) and stream flow (velocity and volume). Data were analyzed, and PowerPoint presentations were …
Following Fall Brook
Watershed Access Lab Projects
This was a study of two sites along Fall Brook, located in Middleborough, MA. Fall Brook has been monitored by MHS students over the past 10 years and is a major tributary of the Taunton River Watershed. The purpose of the study completed this year was to determine how land use affects the nitrate and phosphate levels of Fall Brook. The Wareham Street Site is located next to a horse farm and downstream from several cranberry bogs in a heavily wooded area. The Wood Street Site is located in conservation land, downstream from the Wareham Street Site and has a …
Quaker Run Watershed Analysis
Watershed Access Lab Projects
Students from Mashpee High School have been studying water quality of local rivers for a number of years. In the past, the primary focus was on two rivers that flow through the town: the Quashnet River, and Quaker Run. This school year (2006-07) the Mashpee River was added as the third watershed of interest. Each of three Earth Science classes adopted and studied one of the rivers. Students sampled each stream at headwaters and lower reaches for: macroinvertebrates, water chemistry (temperature, pH, dissolved oxygen, nitrates, and turbidity) and stream flow (velocity and volume). Data were analyzed, and PowerPoint presentations were …
Water Quality Project: Mashpee River Study
Water Quality Project: Mashpee River Study
Watershed Access Lab Projects
Students from Mashpee High School have been studying water quality of local rivers for a number of years. In the past, the primary focus was on two rivers that flow through the town: the Quashnet River, and Quaker Run. This school year (2006-07) the Mashpee River was added as the third watershed of interest. Each of three Earth Science classes adopted and studied one of the rivers. Students sampled each stream at headwaters and lower reaches for: macroinvertebrates, water chemistry (temperature, pH, dissolved oxygen, nitrates, and turbidity) and stream flow (velocity and volume). Data were analyzed, and PowerPoint presentations were …
Fate Of Fish Production In A Seasonally Flooded Saltmarsh, Philip W. Stevens, Clay L. Montague, Kenneth J. Sulak
Fate Of Fish Production In A Seasonally Flooded Saltmarsh, Philip W. Stevens, Clay L. Montague, Kenneth J. Sulak
United States Geological Survey: Staff Publications
Although saltmarshes are thought to enhance the productivity of open estuarine water, the mechanism by which energy transfer occurs has been debated for decades. One possible mechanism is the transfer of saltmarsh production to estuarine waters by vagile fishes and invertebrates. Monthly estimates of fish standing stock, net fish ingress, and predation were used to develop a bio-mass budget to estimates annual production of fishes and the relative yield to predatory fish, birds, and direct migration to the estuary. Annual production of saltmarsh fishes was estimated to 31.0 gm-2 saltmarsh, which falls within the range of previously reported values …
College Of Engineering Senior Design Competition Fall 2006, University Of Nevada, Las Vegas
College Of Engineering Senior Design Competition Fall 2006, University Of Nevada, Las Vegas
Fred and Harriet Cox Senior Design Competition Projects
Part of every UNLV engineering student’s academic experience, the senior design project stimulates engineering innovation and entrepreneurship. Each student in their senior year chooses, plans, designs and prototypes a product in this required element of the curriculum. A capstone to the student’s educational career, the senior design project encourages the student to use everything learned in the engineering program to create a practical, real world solution to an engineering challenge.
The senior design competition helps to focus the senior students in increasing the quality and potential for commercial application for their design projects. Judges from local industry evaluate the projects …
Collisions Of Red-Tailed Hawks (Buteo Jamaicensis), Turkey Vultures (Cathartes Aura), And Black Vultures (Coragyps Atratus) With Aircraft: Implications For Bird Strike Reduction, Bradley F. Blackwell, Sandra E. Wright
Collisions Of Red-Tailed Hawks (Buteo Jamaicensis), Turkey Vultures (Cathartes Aura), And Black Vultures (Coragyps Atratus) With Aircraft: Implications For Bird Strike Reduction, Bradley F. Blackwell, Sandra E. Wright
USDA Wildlife Services: Staff Publications
From 1990 through 2003, 52,493 wildlife collisions with aircraft were reported to the U.S. Federal Aviation Administration (FAA); 97% of these incidents involved birds. The approximate cost to the civil aviation industry in the U.S.A. due to collisions of birds with aircraft (hereafter referred to as bird strikes) was $163.51 million in direct monetary losses and associated costs for the 14 year period (Cleary et al. 2004). Strikes with raptors (Falconidae and Accipitridae; including vultures, Cathartidae)accounted for approximately 28% of reported aircraft down time resulting from known-species bird strikes (known species =182942 hr; total for all birds = 244510 hr) …
Interview With Dan Lajoie, Departure: Architecture Planning, 2006 (Audio), Dan Lajoie
Interview With Dan Lajoie, Departure: Architecture Planning, 2006 (Audio), Dan Lajoie
All Sustainability History Project Oral Histories
Interview of Dan Lajoie by Tirsa Firncrook in SE Portland, Oregon on December 4th, 2006.
The interview index is available for download.
Interview With Steven Edward Koch, Koch Landscape Architecture, 2006, Steven Edward Koch
Interview With Steven Edward Koch, Koch Landscape Architecture, 2006, Steven Edward Koch
All Sustainability History Project Oral Histories
Interview of Steven Edward Koch by Robyn Russnogle on December 4th, 2006.
The interview index is available for download.
What Does Height Really Mean? Part Iv: Gps Orthometric Heighting, Thomas H. Meyer, Daniel R. Roman, David B. Zilkoski
What Does Height Really Mean? Part Iv: Gps Orthometric Heighting, Thomas H. Meyer, Daniel R. Roman, David B. Zilkoski
Department of Natural Resources and the Environment Articles
This is the final paper in a four-part series examining the fundamental question, “What does the word height really mean?” The creation of this series was motivated by the National Geodetic Survey’s (NGS) embarking on a height modernization program as a result of which NGS will publish measured ellipsoid heights and computed Helmert orthometric heights for vertical bench marks. Practicing surveyors will therefore encounter Helmert orthometric heights computed from Global Positioning System (GPS) ellipsoid heights and geoid heights determined from geoid models as their published vertical control coordinate, rather than adjusted orthometric heights determined by spirit leveling. It is our …
Outcomes Of The Wetline Review. The Minister For Fisheries Proposed Decision For The Future Management Of The West Coast And Gascoyne Commercial 'Wetline' Fisheries, Department Of Fisheries Western Australia.
Outcomes Of The Wetline Review. The Minister For Fisheries Proposed Decision For The Future Management Of The West Coast And Gascoyne Commercial 'Wetline' Fisheries, Department Of Fisheries Western Australia.
Fisheries management papers
This document details my proposed decisions regarding the new management arrangements for the West Coast and Gascoyne commercial “wetline” fisheries. Before finalising my position on the new management arrangements for these fisheries I invite any final comments on the proposed arrangements set out in this document. Although specific issues have been identified, your views are sought on any or all of the matters in the document of significance to you and/or your group.
Mems Mobile Gis: A Spatially Enabled Fish Habitat Management System, Andrea Rizzini, Keith Gardiner, Michela Bertolotto, James Carswell
Mems Mobile Gis: A Spatially Enabled Fish Habitat Management System, Andrea Rizzini, Keith Gardiner, Michela Bertolotto, James Carswell
Conference papers
Spatially enabled computing can provide assistance to both web-based and mobile users by exploiting positional information and associated contextual knowledge. The Mobile Environmental Management System (MEMS) is a proof of concept prototype that has been developed in order to simplify administrative duties of biologists at the Department of Fisheries and Oceans (DFO), Canada. MEMS aims to deliver contextaware functionality aided by visualization, analysis and manipulation of spatial and attribute datasets. The resulting application delivers a set of functions and services that aids the DFO’s biologists in making everyday management decisions
Interview With Carol Mayer-Reed, Mayer/Reed, 2006 (Audio), Carol Mayer-Reed
Interview With Carol Mayer-Reed, Mayer/Reed, 2006 (Audio), Carol Mayer-Reed
All Sustainability History Project Oral Histories
Interview of Carol Mayer-Reed by Robyn Russnogle at on December 1st, 2006.
The interview index is available for download.
Association Between Fire Return Interval And Population Dynamics In Four California Populations Of Tecate Cypress (Cupressus Forbesii), Roland C. De Gouvenain, Ali M. Ansary
Association Between Fire Return Interval And Population Dynamics In Four California Populations Of Tecate Cypress (Cupressus Forbesii), Roland C. De Gouvenain, Ali M. Ansary
Faculty Publications
The Tecate cypress (Cupressus forbesii) is a tree species associated with chaparral ecosystems in southern California and northern Baja California, Mexico. It is fire-adapted, its regeneration triggered by the opening of serotinous cones when adult trees are burned. Surveys made in the 1980s by others suggested that some Tecate cypress populations were declining, and some authors suggested that increased fire frequency in southern California was a major factor for this decline. We asked whether current population trends were still negative for Tecate cypress 20 years later, and whether population growth was associated with fire return interval length. Based on demographic, …
From Herd Diversification To Livelihood Diversification As A Response To Poverty: The Case Of The Waso Boran Of Northern Kenya, D. Layne Coppock, Abdullahi D. Jillo, Abdillahi A. Aboud
From Herd Diversification To Livelihood Diversification As A Response To Poverty: The Case Of The Waso Boran Of Northern Kenya, D. Layne Coppock, Abdullahi D. Jillo, Abdillahi A. Aboud
Environment and Society Faculty Publications
The Waso Boran of northern Kenya used to have large, mobile, and diverse herds of livestock that exploited equally large and diverse rangelands. Forty years of human population growth, drought, environmental change, and lack of relevant policies have altered this situation, however, with the majority of Waso Boran today being livestock poor and engaged in a variety of non-pastoral activities to diversify their livelihoods. One-third of 540 households we surveyed in Isiolo District now have ten head of cattle or less, and a larger census suggests that only 15 percent of households can currently be categorized as mobile pastoralists. The …
Intermediate Development Of A Forested Headwater Wetland Hgm Model For Wetlands Management In Virginia, Kirk J. Havens, David O'Brien, David Stanhope, Kory Angstadt, Daniel Schatt, Donna M. Bilkovic, Carl Hershner
Intermediate Development Of A Forested Headwater Wetland Hgm Model For Wetlands Management In Virginia, Kirk J. Havens, David O'Brien, David Stanhope, Kory Angstadt, Daniel Schatt, Donna M. Bilkovic, Carl Hershner
Reports
No abstract provided.
Interview With Greg Sawyer, Providence Builders, 2006 (Audio), Greg Sawyer
Interview With Greg Sawyer, Providence Builders, 2006 (Audio), Greg Sawyer
All Sustainability History Project Oral Histories
Interview of Greg Sawyer by Amy Evangelista in NE Portland, Oregon on December 1st, 2006.
The interview index is available for download.
Interview With Yianni Doulis, Yianni Doulis Architecture, 2006 (Audio), Yianni Doulis
Interview With Yianni Doulis, Yianni Doulis Architecture, 2006 (Audio), Yianni Doulis
All Sustainability History Project Oral Histories
Interview of Yianni Doulis by Daniel Woodward in NW Portland, Oregon on December 1st, 2006.
The interview index is available for download.
Nesting Success Of Grassland And Savanna Birds On Reclaimed Surface Coal Mines Of The Midwestern United States, Edward W. Galligan, Travis L. Devault, Steven L. Lima
Nesting Success Of Grassland And Savanna Birds On Reclaimed Surface Coal Mines Of The Midwestern United States, Edward W. Galligan, Travis L. Devault, Steven L. Lima
USDA Wildlife Services: Staff Publications
Reclaimed surface coal mines in southwestern Indiana support many grassland and shrub/ savanna bird species of conservation concern. We examined the nesting success of birds on these reclaimed mines to assess whether such ‘‘unnatural’’ places represent productive breeding habitats for such species. We established eight study sites on two large, grassland-dominated mines in southwestern Indiana and classified them into three categories (open grassland, shrub/savanna, and a mixture of grassland and shrub/savanna) based on broad vegetation and landscape characteristics. During the 1999 and 2000 breeding seasons, we found and monitored 911 nests of 31 species. Daily nest survival for the most …
Raccoon Predation As A Potential Limiting Factor In The Success Of The Green Iguana In Southern Florida, Henry T. Smith, Walter E. Meshaka Jr., Richard M. Engeman, Steven M. Crossett, Mark E. Foley, Gary Bush
Raccoon Predation As A Potential Limiting Factor In The Success Of The Green Iguana In Southern Florida, Henry T. Smith, Walter E. Meshaka Jr., Richard M. Engeman, Steven M. Crossett, Mark E. Foley, Gary Bush
USDA Wildlife Services: Staff Publications
The Green Iguana, Iguana iguana, is a well established, large-bodied, exotic species in Florida (Meshaka et al. 2004a. The Exotic Amphibians and Reptiles of Florida, Krieger Publishing Company, Malabar, Florida. 155 pp.; Meshaka et al. 2004b. Iguana 11:154-161). Limiting factors of populations and causes of Green Iguana mortality in Florida are poorly understood and the only documented predators are the domestic dog (Canus familiaris) (Meshaka et al. 2004a), Yellow-crowned Night-heron (Nyctanassa violacea) (Engeman et al. 2005. Herpetol. Rev. 36:320), Florida Burrowing Owl (Athene cunicularia floridana) (McKie et al. 2005. Florida Field Nat. 33:125-127), …
Community Perceptions Concerning Key Ecological Resources At Risk In Baringo District, Kenya, D. Layne Coppock, Mark N. Mutinda, Abdillahi A. Aboud
Community Perceptions Concerning Key Ecological Resources At Risk In Baringo District, Kenya, D. Layne Coppock, Mark N. Mutinda, Abdillahi A. Aboud
Environment and Society Faculty Publications
Key ecological resources in arid and semi-arid lands are often characterized by small patches of seasonal grazing and important water points that lend critical support to entire production systems. When key resources are degraded or lost, production systems can be badly compromised. The Baringo District of north-central Kenya is well known for enduring decades of environmental degradation and food relief. As an initial part of an effort to map and characterize key ecological resources at risk in Baringo, we interviewed 136 resident leaders from pastoral and agro-pastoral areas. We asked them to identify and rank their most vulnerable ecological resources, …