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Articles 3841 - 3870 of 7823
Full-Text Articles in Environmental Health and Protection
Natural And Constructed Wetlands For Ecosystem And Engineering Services In The Arid And Semi-Arid Regions, Achyut Raj Adhikari
Natural And Constructed Wetlands For Ecosystem And Engineering Services In The Arid And Semi-Arid Regions, Achyut Raj Adhikari
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Las Vegas Wash (LVW) has undergone significant wetlands degradation and soil erosion over the past thirty years due to increasing flow resulting from urbanization and large rainfall events in the Las Vegas Valley Watershed. The increased flow and associated pollution load in the LVW and its adverse impact in Lake Mead have alerted stakeholders to pay a greater attention to explore alternative measures for rehabilitation of wetland ecosystems. This dissertation, using the case of changes in LVW, analyzes and describes ecological and engineering services provided by wetlands in arid and semi-arid regions and provides a knowledge base that can …
Exploring The Seed Bank Dynamics Of Red Brome: Longevity, Density, And Relationship To Fire, Benjamin S. Jurand
Exploring The Seed Bank Dynamics Of Red Brome: Longevity, Density, And Relationship To Fire, Benjamin S. Jurand
UNLV Theses, Dissertations, Professional Papers, and Capstones
This research explores several untested aspects of the seed bank characteristics of red brome (Bromus rubens), an invasive annual grass in southwestern United States arid lands. Red brome is a formidable competitor to native plant species, both annual and perennial alike, and produces many seeds that germinate easily. The stalks of red brome contribute continuous-cover fuel loads that facilitate wildfires destructive to mature native Mojave Desert plant communities. This makes it a priority species for land managers, particularly when dealing with recovery after fire.
This project addressed questions related to the longevity of red brome seeds in soil seed banks …
The New American Conservation Movement: New Strategies, Focus And Organizations For The 21st Century, Amy Deanna Northrup
The New American Conservation Movement: New Strategies, Focus And Organizations For The 21st Century, Amy Deanna Northrup
UNLV Theses, Dissertations, Professional Papers, and Capstones
This dissertation provides evidence of the emergence of a new conservation movement in the United States. The strategic, tactical and organizational approaches of traditional conservation efforts, which began in the early 1900s, have shifted during the last two decades. Specifically, the new conservation movement is characterized by three distinct changes. First, many of the well-established conservation organizations, such as the Sierra Club and National Audubon Society, have largely abandoned their traditional focus on increasing the number of acres preserved; instead more defensive and fragmented forms of conservation now reign. The second change to the conservation movement involves a dramatic expansion …
Exploring German And American Modes Of Pedagogical And Institutional Sustainability: Forging A Way Into The Future, Lindon N. Pronto
Exploring German And American Modes Of Pedagogical And Institutional Sustainability: Forging A Way Into The Future, Lindon N. Pronto
Pitzer Senior Theses
Rooted deep in Germany's past is its modern socio-political grounding for environmental respect and sustainability. This translates into individual and collective action and extends equally to the economic and policy realm as it does to educational institutions. This thesis evaluates research conducted in Germany with a view to what best approaches are transferable to the United States liberal arts setting. Furthermore, exemplary American models of institutional sustainability and environmental education are explored and combined with those from abroad to produce a blueprint and action plan fitting for the American college and university.
Assessing Population-Level Effects Of Zinc Exposure To Brown Trout (Salmo Trutta) In The Arkansas River At Leadville, Colorado, John Toll, Kristina Garber, David Deforest, William Brattin
Assessing Population-Level Effects Of Zinc Exposure To Brown Trout (Salmo Trutta) In The Arkansas River At Leadville, Colorado, John Toll, Kristina Garber, David Deforest, William Brattin
United States Environmental Protection Agency: Publications
We assessed population-level risk to upper Arkansas River brown trout (Salmo trutta L.) due to juvenile exposure to Zn. During spring, individuals in the sensitive young-of-the-year life stage are exposed to elevated Zn concentrations from acid mine drainage. We built and used a simple life-history population model for the risk assessment, with survival and fecundity parameter values drawn from published data on brown trout populations located in the United States and Europe. From experimental data, we derived a toxicity model to predict mortality in brown trout fry after chronic exposure to Zn. We tested sensitivity of risk estimates to …
Take Pride In America Phase Iii: Quarterly Progress Report, Period Covering January 25, 2012-April 24, 2012, Margaret N. Rees
Take Pride In America Phase Iii: Quarterly Progress Report, Period Covering January 25, 2012-April 24, 2012, Margaret N. Rees
Anti-littering Programs
- The GIS database continued to be populated with data.
- Hector’s Helpers participants completed multiple projects.
- Social Media training was delivered.
- The pilot testing of the litter monitoring program continued.
The University of Nevada Las Vegas Public Lands Institute (PLI) has designed the Take Pride in America (TPIA) Phase III work plan based on the strategic plan developed by the Southern Nevada Agency Partnership (SNAP) anti-litter and desert dumping team during Phase II of the program.
Clean Water In Haiti, Hannah Mchugh
Clean Water In Haiti, Hannah Mchugh
2012 Awards for Excellence in Student Research & Creative Activity - Documents
In the past few years, Haiti has been a topic that has been in the news here in the United States for many reasons. These reports typically show the faces of hundreds of starving and injured Haitians who live in turmoil and they discuss the disasters that have befallen the country. While these reports do not usually show the more pleasant aspects, they are relatively accurate in showing the state of the majority of the country. A major impact on a country that is in such a dire state is the presence and availability of clean water. But to understand …
Green Boston Harbor Project (Gbh), Community Environmental Stewardship: Applied Research, Education And Outreach, Anamarija Frankić
Green Boston Harbor Project (Gbh), Community Environmental Stewardship: Applied Research, Education And Outreach, Anamarija Frankić
Office of Community Partnerships Posters
The GBH methodology is derived from a 1500 year old Native Hawaiian Ahupua’a approach. This approach defines sustainable relationships among land, water and humans from the tops of islands to the coral reefs and open ocean. GBH seeks a similar interconnection between the City of Boston and Boston Harbor: from watersheds to the harbor and its coastal habitats and islands.
The Vacb Model In Hòa An Village And Xeo Trâm Hamlet: Comparison And Analysis Through A Gendered Lens, Alyssa Bosold
The Vacb Model In Hòa An Village And Xeo Trâm Hamlet: Comparison And Analysis Through A Gendered Lens, Alyssa Bosold
Independent Study Project (ISP) Collection
Burning fuel-wood, a method of traditional cooking practiced by half of all homes in Vietnam (Global Alliance for Clean Cook-stoves 2012) and the majority of homes in Hòa An Village and Xeo Trâm Hamlet, has significant negative consequences in terms of environmental and personal health. In Hòa An Village and Xeo Trâm Hamlet, as is true in much of Vietnam, gender roles dictate that women should be primarily responsible for household chores like cooking (World Bank 2001, Nguyen 2012, Nguyen 2012, Vo 2012). This means that women must often deal directly with the environmental dangers and safety hazards of woodstoves. …
Las Carreteras Ya No Cantan: Una Investigación Sobre La Riqueza Y Diversidad De Especies De Anfibios En Sitios Sensibles A Lado Del Eje Vial N°4 En La Reserva Biológica Tapichalaca, Harrison Goldspiel
Las Carreteras Ya No Cantan: Una Investigación Sobre La Riqueza Y Diversidad De Especies De Anfibios En Sitios Sensibles A Lado Del Eje Vial N°4 En La Reserva Biológica Tapichalaca, Harrison Goldspiel
Independent Study Project (ISP) Collection
Tapichalaca Biological Reserve (RBT), located in Zamora Chinchipe Province in southern Ecuador, is a zone with high biodiversity and endemism. Although famous for the Jocotoco antpitta (Grallaria ridgelyi), the reserve is very rich in anphibians, especially frogs of the genus Pristimantis. RBT hosts at least 29 species of amphibians, including the new and endemic Hyloscirtust tapichalaca and 25 Pristimantis species (Meza-R. et al. 2008). RBT faces various threats, such as climate change, farms, and the exploitation of palm trees. One pertinent threat is Eje Vial N°4, a main road that passes through the reserve. This study investigated …
Estimation Of Phosphorus Bioavailability In The Water Column Of The Bronx River, New York, Jingyu Wang, Hari K. Pant
Estimation Of Phosphorus Bioavailability In The Water Column Of The Bronx River, New York, Jingyu Wang, Hari K. Pant
Publications and Research
Phosphorus (P) is a primary limiting nutrient in rivers and streams, and excessive P results in eutrophication of freshwater systems, in turn, excessive algal growth/toxic algal blooms, oxygen depletion, and water quality degradation. This study analyzed P pool, and hydrolysis of organic P (OP) by native phosphatases (NPase) in the water samples collected in the Bronx River. The soluble reactive P (SRP) of most of the sites’ water collected in 2006 and 2007 were higher (average 67 µg·L–1 and 68 µg·L–1, respectively) than the US Environmental Protection Agency’s (EPA) standard of 15 µg·L–1. The SRP% (SRP/TP%) average was 27% in …
A Conceptual Model To Facilitate Amphibian Conservation In The Northern Great Plains, David M. Mushet, Ned H. Euliss Jr., Craig A. Stockwell
A Conceptual Model To Facilitate Amphibian Conservation In The Northern Great Plains, David M. Mushet, Ned H. Euliss Jr., Craig A. Stockwell
Great Plains Research: A Journal of Natural and Social Sciences (through 2013)
As pressures on agricultural landscapes to meet worldwide resource needs increase, amphibian populations face numerous threats including habitat destruction, chemical contaminants, disease outbreaks, wetland sedimentation, and synergistic effects of these perturbations. To facilitate conservation planning, we developed a conceptual model depicting elements critical for amphibian conservation in the northern Great Plains. First, we linked upland, wetland, and landscape features to specific ecological attributes. Ecological attributes included adult survival; reproduction and survival to metamorphosis; and successful dispersal and recolonization. Second, we linked ecosystem drivers, ecosystem stressors, and ecological effects of the region to each ecological attribute. Lastly, we summarized information on …
Inteñas En Acción: El Eco-Feminismo Y El Desarrollo Alternativo En Íntag, Ellicott Dandy
Inteñas En Acción: El Eco-Feminismo Y El Desarrollo Alternativo En Íntag, Ellicott Dandy
Independent Study Project (ISP) Collection
El bosque nublado es una zona de vida subtropical y montañosa del Ecuador caracterizada por sus grandes cuencas hídricas, y su riqueza de aves y plantas epifitas.[1] Dentro del bosque nublado, está la Zona de Íntag con una extensión de 1.374,4 kilómetros cuadrados.[2] Junto a esta diversidad de especies, conviven unas doce mil personas[3] en parroquias y docenas de comunidades pertenecientes al sector, conectadas por carreteras que serpentean entre las lomas verdes de la Cordillera Toisán. Un 98% de la población de Íntag se identifica como mestiza, y del restante 2%, 1% como indígena y 1% como …
Scwds Briefs: Volume 28, Number 1 (April 2012), Jeanenne Brewton, Michael J. Yabsley
Scwds Briefs: Volume 28, Number 1 (April 2012), Jeanenne Brewton, Michael J. Yabsley
Southeastern Cooperative Wildlife Disease Study: Publications
Wildlife Restoration Program: 75 Years of Success
AIV in Minnesota Ducks: The Whole Shebang
Another Vector-borne Virus Hits European Livestock
Polyarthritis in Raccoons
Borrelia in African Penguins
Accolades
The Effects Of Organizational Structure On Sustainability Report Compliance, Kurt E. Mink
The Effects Of Organizational Structure On Sustainability Report Compliance, Kurt E. Mink
Purdue Polytechnic Masters Theses
The purpose of this qualitative research was to determine the organizational characteristics that contribute to developing sustainability reports with GRI A+ application levels. Judgment sampling was used to select organizations that received an A+ GRI application level in 2010. These organizations were then surveyed using a fifteen-question survey, which emulated the semi-structured interview questions utilized by Farneti and Guthrie (2007). The survey was disseminated to 107 organizations and the responses were collated and analyzed to determine important themes relevant to this research study. The results of this research study suggest a relationship between an organization’s genuine commitment to sustainability by …
Coarse Woody Debris In A Tropical Rainforest In North Queensland, Australia: Relationships With Stand Structure And Disturbance, Nadine Rea
Independent Study Project (ISP) Collection
Coarse woody debris (CWD) refers to the woody material on the forest floor, including fallen stems, large branches, coarse roots, wood pieces, and standing dead trees (snags) (Harmon et al. 1986). CWD is an essential but often overlooked aspect of ecosystems. It plays many key ecosystem roles and is instrumental in overall ecosystem functionality. While a piece of CWD decomposes, it provides key habitat for many different species, minimizes soil erosion, affects soil development, stores nutrients and water, and influences the global carbon cycle (Harmon and Hua 1991). In some forests, CWD can exist on the forest floor for hundreds …
Water And Sanitation: A Study Of Deserted Idp Camps In Lapul Sub-County, Patrick Dunlap
Water And Sanitation: A Study Of Deserted Idp Camps In Lapul Sub-County, Patrick Dunlap
Independent Study Project (ISP) Collection
This paper sets out to discover how access to water and sanitation has changed overtime for the residents of deserted satellite IDP camps in Lapul sub-county, Northern Uganda. Throughout the period of conflict in the region until today, residents of this region have struggled to gain adequate access to water and sanitation.
Qualitative field research was carried out over a period of eleven days, with six interviews and three focus groups held to gain information on how access to water and sanitation has changed overtime for the displaced. Methods of Rapid Rural Appraisal and Direct Observation were applied to make …
Running Head: Sustainability Framework Applied To Integrated Resort 1 International Standard Of Sustainability Framework Applied To Integrated Resorts, Jong Hwa Jeon
UNLV Theses, Dissertations, Professional Papers, and Capstones
Purpose
The purpose of this study is to explore the extent to which Las Vegas integrated resorts apply measurement framework for sustainability. It will scrutinize and explore the existing sustainability strategies and practices, and look into several plausible ways to improve the sustainability movement that the companies in hospitality industry currently have. The paper will also look into the tracking and measuring system in consuming resources and the equivalent common actions taken by the management of the hospitality companies. From there, the paper will discuss the Global Reporting Initiative (GRI) guideline and establish if the companies have aligned their efforts …
Nevada Interagency Volunteer Program: Helping Hands Across Public Lands – Phase Ii: Quarterly Progress Report, Period Covering January 1, 2012 To March 31, 2012, Margaret N. Rees
Nevada Interagency Volunteer Program: Helping Hands Across Public Lands – Phase Ii: Quarterly Progress Report, Period Covering January 1, 2012 To March 31, 2012, Margaret N. Rees
Get Outdoors Nevada
- The number of records in the volunteer database increased by 4.96% over the last quarter. The database now contains 7,423 records.
- Results show an average of 1,259 visits per month, and with an average of 3,015 pages viewed per month.
- Get Outdoors Nevada supported 14 volunteer events in a variety of ways. These events utilized 364 volunteers whom contributed approximately 2,414 hours of service.
- Three community outreach events were attended, resulting in 293 direct contacts with 50 names added to the database.
- The automated volunteer orientation training project has been completed and disks have been delivered to the 4 agencies. …
Low Level Exposure To Air Pollution And Risk Of Adverse Birth Outcomes In Hillsborough County, Florida, Maria B. Mainolfi
Low Level Exposure To Air Pollution And Risk Of Adverse Birth Outcomes In Hillsborough County, Florida, Maria B. Mainolfi
USF Tampa Graduate Theses and Dissertations
In this retrospective cohort from 2002 through 2007, 104,003 singleton live births in Hillsborough County, Florida were analyzed to elucidate the relationship between feto-infant morbidity outcomes and prenatal exposure to six criteria air pollutants. This study is based on three linked databases: The Florida Hospital Discharge database; The vital statistics records of singleton live births; Air Pollution meteorological data from the Environmental Protection Agency. There are six common air pollutants, particulate matter 2.5 (PM2.5), particulate matter 10 (PM10), ground-level ozone (O3), carbon monoxide (CO), nitrogen (NOx), and lead (Pb). These pollutants are harmful to human health and the environment. The …
Comparative Analysis Of Two Biological Warfare Air Samplers Using Live Surrogate Agents, James C. Enderby
Comparative Analysis Of Two Biological Warfare Air Samplers Using Live Surrogate Agents, James C. Enderby
Theses and Dissertations
The United States Air Force has several high-volume biological air samplers, including the XMX/2L-MIL and the Biocapture 650. Limited information is available on either in terms of its collection of viruses and bacteria. However, previous research on the XMX/2L-MIL has determined that modifications to the secondary flow rate and the use of a virus preserving collection media may provide improved virus collection rates. In this thesis, these modifications were investigated to determine their impact on the collection of viral and bacterial aerosols. Additionally, relative collection rates were compared against those for the Biocapture 650. MS2 bacteriophage was the viral surrogate …
Research, Monitoring, Assessment And Development Plan 2011 – 2012, Department Of Fisheries
Research, Monitoring, Assessment And Development Plan 2011 – 2012, Department Of Fisheries
Fisheries Occasional Publications
No abstract provided.
Physicochemical And Microbiological Quality Of Harvested Rainwater From An Agricultural Installation In Ireland, Sean O'Hogain, Liam Mccarton, Niamh Mcintyre, Jenny Pender, Anna Reid
Physicochemical And Microbiological Quality Of Harvested Rainwater From An Agricultural Installation In Ireland, Sean O'Hogain, Liam Mccarton, Niamh Mcintyre, Jenny Pender, Anna Reid
Articles
Members of DTC Research Group. Dublin Institute of Technology was commissioned in 2005 by the Department of Environment, Heritage and Local Government in Ireland to assess the feasibility of utilising rainwater to replace treated mains water for nonpotable uses. The project involved the design, installation, commissioning and monitoring of rainwater harvesting on a farm. Two monitoring programmes, Regime 1 and Regime 2, examined the physicochemical and microbiological quality of the harvested rainwater. Samples were taken monthly and tested. Regime 1 analysis showed that the microbiological quality of the rainwater from the site did not comply with the requirements of the …
Brief 5: Enhancing Environmental Governance For Sustainable Development: Function-Oriented Options, John E. Scanlon
Brief 5: Enhancing Environmental Governance For Sustainable Development: Function-Oriented Options, John E. Scanlon
Governance and Sustainability Issue Brief Series
The 2012 United Nations Conference on Sustainable Development, Rio+20, is likely to determine the future direction of the institutional framework for sustainable development and for international environmental governance. As States move towards the ‘sharp end’ of their negotiations, it is important to analyse some of the risks and benefits of the identified options for the reform of international environmental governance and offer pragmatic ideas on how to make best use of existing resources and structures.
West Of Eden: Resource Wars And Nature-Cultures In The American West, Scout Calvert
West Of Eden: Resource Wars And Nature-Cultures In The American West, Scout Calvert
University of Nebraska-Lincoln Libraries: Faculty Publications
The richness and variety of the western landscape is what is at stake in hot political contests for the resources of the West: much of this public land is available to economic activity, including for mining, grazing, logging, and recreation. These uses threaten to outpace the land’s ability to renew these resources along with others, like air and water. Now in the first decade of the millennium with a new environmental awareness emerging partly from media coverage of global warming and peak oil, The American West at Risk offers a wide-ranging look at the degradation of the environment in the …
Nutrient And Fecal Microbe Assessment Of The Water Quality Of Tates Creek, Madison County, Kentucky, Walter S. Borowski, Kristopher H. Carroll
Nutrient And Fecal Microbe Assessment Of The Water Quality Of Tates Creek, Madison County, Kentucky, Walter S. Borowski, Kristopher H. Carroll
EKU Faculty and Staff Scholarship
Tates Creek is a significant tributary to the Kentucky River that has shown high levels of microbial and nutrient pollution in the past (Kentucky River Watershed Watch). We sampled the waters of Tates Creek more comprehensively by collecting stream water at 25 stations along its 13-mile length from its headwaters to the Kentucky River. Most samples were collected at the confluence of major tributaries to also access the water quality of tributary streams. Samples were collected four times between May and August 2011 during dry periods as well as immediately after a rainfall event. We measured ammonium (NH4+ …
Global Monthly Water Scarcity: Blue Water Footprints Versus Blue Water Availability, Arjen Y. Hoekstra, Mesfin Mekonnen, Ashok K. Chapagain, Ruth E. Mathews, Brian D. Richter
Global Monthly Water Scarcity: Blue Water Footprints Versus Blue Water Availability, Arjen Y. Hoekstra, Mesfin Mekonnen, Ashok K. Chapagain, Ruth E. Mathews, Brian D. Richter
Daugherty Water for Food Global Institute: Faculty Publications
Freshwater scarcity is a growing concern, placing considerable importance on the accuracy of indicators used to characterize and map water scarcity worldwide. We improve upon past efforts by using estimates of blue water footprints (consumptive use of ground- and surface water flows) rather than water withdrawals, accounting for the flows needed to sustain critical ecological functions and by considering monthly rather than annual values. We analyzed 405 river basins for the period 1996–2005. In 201 basins with 2.67 billion inhabitants there was severe water scarcity during at least one month of the year. The ecological and economic consequences of increasing …
The Water Footprint Of Humanity, Arjen Y. Hoekstra, Mesfin Mekonnen
The Water Footprint Of Humanity, Arjen Y. Hoekstra, Mesfin Mekonnen
Daugherty Water for Food Global Institute: Faculty Publications
This study quantifies and maps the water footprint (WF) of humanity at a high spatial resolution. It reports on consumptive use of rainwater (green WF) and ground and surface water (blue WF) and volumes of water polluted (gray WF). Water footprints are estimated per nation from both a production and consumption perspective. International virtual water flows are estimated based on trade in agricultural and industrial commodities. The global annual average WF in the period 1996–2005 was 9,087 Gm3 ∕y (74% green, 11% blue, 15% gray). Agricultural production contributes 92%. About one-fifth of the global WF relates to production for export. …
Bacterial Source Tracking Of E. Coli In A Constructed Wetland, Rose M. Martin
Bacterial Source Tracking Of E. Coli In A Constructed Wetland, Rose M. Martin
Master's Theses
Bacterial source tracking was used to identify sources of fecal contamination in a constructed wetland. Nucleotide sequence differences in the Escherichia coli malate dehydrogenase (mdh) gene were used to distinguish between strains isolated from pigeon and cattle feces. Fourteen E. coli isolates were taken from cattle and pigeon fecal samples and sixteen E. coli isolates were taken from wetland water samples. A region of the E. coli mdh gene was amplified via PCR and sequenced. Twelve distinct sequences were obtained. Water samples indicated the presence of both pigeon and cattle fecal contamination in the wetland. Six sequences distinct …
Project Gaya: A Study Abroad Program Design For Fundación Operación Gaya Internacional, Lauren E. Johanson
Project Gaya: A Study Abroad Program Design For Fundación Operación Gaya Internacional, Lauren E. Johanson
Capstone Collection
Since 2008 Fundación Operación GAYA Internacional, a Costa Rican NGO has provided youth training and development programs to local youth in Costa Rica, empowering young people to be “architects” in the development of their own communities and to take the lead in creating a world that is more peaceful and just. Through the implementation of Project GAYA, the foundation will expand its programming to international youth for the first time.
The proposed program offers a comprehensive program design for a short-term study abroad experience for U.S. high school students to Costa Rica. Students will engage in experiential learning and critical …