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Environmental Health and Protection Commons™
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Articles 1 - 27 of 27
Full-Text Articles in Environmental Health and Protection
Interactions Of Zooplankton And Phytoplankton With Cyanobacteria, Rebecca Alexander
Interactions Of Zooplankton And Phytoplankton With Cyanobacteria, Rebecca Alexander
School of Natural Resources: Dissertations, Theses, and Student Research
Cyanobacteria are a major concern in Nebraska reservoirs and are capable of producing toxins that can cause skin irritations and gastrointestinal problems, as well as affect the nervous system. It is important to determine the mechanisms that can cause cyanobacteria blooms due to the effect they can have on human health. The interaction of zooplankton and other phytoplankton groups with cyanobacteria is important because there is a biological component in surface waters that should be taken into consideration along with the physical and chemical parameters that have been noted to promote cyanobacteria. For example, zooplankton have the ability to alter …
Rickettsia Felis In Cat Fleas, Ctenocephalides Felis Parasitizing Opossums, San Bernardino County, California, Kyle F. Abramowicz, J. W. Wekesa, C. N. Nwadike, Maria L. Zambrano, Sandor E. Karpathy, D. Cecil, J. Burns, R. Hu, Marina E. Eremeeva
Rickettsia Felis In Cat Fleas, Ctenocephalides Felis Parasitizing Opossums, San Bernardino County, California, Kyle F. Abramowicz, J. W. Wekesa, C. N. Nwadike, Maria L. Zambrano, Sandor E. Karpathy, D. Cecil, J. Burns, R. Hu, Marina E. Eremeeva
Environmental Health Sciences Faculty Publications
Los Angeles and Orange Counties are known endemic areas for murine typhus in California; however, no recent reports of flea-borne rickettsioses are known from adjacent San Bernardino County. Sixty-five opossums (Didelphis virginiana) were trapped in the suburban residential and industrial zones of the southwestern part of San Bernardino County in 2007. Sixty out of 65 opossums were infested with fleas, primarily cat fleas, Ctenocephalides felis (Bouché, 1835). The flea minimum infection rate with Rickettsia felis was 13.3% in pooled samples and the prevalence was 23.7% in single fleas, with two gltA genotypes detected. In spite of historic records of murine …
Restoration Of Biological Soil Crust On Disturbed Gypsiferous Soils In Lake Mead National Recreation Area, Eastern Mojave Desert, Lindsay P. Chiquoine
Restoration Of Biological Soil Crust On Disturbed Gypsiferous Soils In Lake Mead National Recreation Area, Eastern Mojave Desert, Lindsay P. Chiquoine
UNLV Theses, Dissertations, Professional Papers, and Capstones
Biological soil crusts (BSCs) are sensitive to anthropogenic disturbances. Natural recovery takes many years. Active restoration decreases recovery time. Native BSC inocula, which included lichens and mosses, salvaged from gypsiferous soil habitats in Lake Mead National Recreation Area (LMNRA) in the eastern Mojave Desert were stored dry for two years and applied to disturbed soil after a road reconstruction in LMNRA and also used in laboratory experiments to test inoculation technique effectiveness. After 18 months, field results revealed positive relationships between inoculation and the presence of macroscopic BSC cover, cyanobacteria abundance, soil stability, and ammonium concentrations. Chlorophyll fluorescence monitoring of …
Too Much Weed: Invasive Species In Chitwan National Park, Laura Nelson
Too Much Weed: Invasive Species In Chitwan National Park, Laura Nelson
Independent Study Project (ISP) Collection
Invasive plant species threaten jungle eco-systems in Chitwan National Park. Mikania micrantha is the most destructive invasive plant in the park and has been named one of the world’s 100 worst invaders. It is an exceptionally fastgrowing and aggressive perennial plant that is quickly spreading throughout Chitwan and ousting native plant species that comprise the diets of rhinos and other important wildlife species. M. micrantha poses both immediate ecological concerns to wildlife and threatens rural subsistence farming populations by destroying cropland. In Nepal, no policy or program exists to contain invasive plant species, and large-scale management of M. micrantha is …
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending September 30, 2012, Margaret N. Rees
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending September 30, 2012, Margaret N. Rees
Limnological Studies
Continuation of Project 1
- The research effort titled Growth of adult quagga mussels within Las Vegas Wash/Las Vegas Bay is ongoing.
Continuation of Project 2
- Additional content was contributed to the future NPS-funded U.S. Geological Survey Circular ‘state-of-the-science’ report for Lakes Mead and Mohave. UNLV performed a new co-editing and coordinating task related to this product as the major focus of this quarter’s effort; the master version of this report is on schedule for delivery to the editorial team during the first week of October 2012.
Modification Activities:
Extended Short-term Continued Limnological Assistance
Quagga Mussel Objectives:
- Most juvenile/adult quagga mussel …
Valuing Improvements To Coastal Waters Using Choice Experiments: An Application To Revisions Of The Eu Bathing Waters Directive, Stephen Hynes, Dugald Tinch, Nick Hanley
Valuing Improvements To Coastal Waters Using Choice Experiments: An Application To Revisions Of The Eu Bathing Waters Directive, Stephen Hynes, Dugald Tinch, Nick Hanley
Working Papers
Planned changes to the European Union’s Bathing Waters Directive (2006/7 EC) will force member states to produce improvements in a number of parameters of coastal water quality. This study uses the choice experiment method to estimate the economic benefits attached to such improvements, based on a sample of recreationalists on beaches in Ireland. The analysis indicates that improvements in all of the bathing water related attributes studied result in positive willingness to pay, and also show evidence of scope effects. Using random parameters and latent class modelling techniques, potential heterogeneity in preferences is then investigated and shown to be present …
Take Pride In America Phase Iii: Quarterly Progress Report, Period Covering April 25, 2012-July 24, 2012, Margaret N. Rees
Take Pride In America Phase Iii: Quarterly Progress Report, Period Covering April 25, 2012-July 24, 2012, Margaret N. Rees
Anti-littering Programs
- The GIS database continued to be populated with data.
- Hector’s Helpers added an additional youth group.
- The new website launched and social media efforts began.
- The pilot testing of the litter monitoring program continued.
The University of Nevada Las Vegas Public Lands Institute (PLI) 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.
Rickettsia Felis In Ctenocephalides Felis From Guatemala And Costa Rica, Adriana Troyo, Danilo Alvarez, Lizeth Taylor, Gabriela Abdalla, Olger Calderon-Arguedas, Maria L. Zambrano, Gregory A. Dasch, Kim A. Lindblade, Laya Hun, Marina Eremeeva, Alejandra Estevez
Rickettsia Felis In Ctenocephalides Felis From Guatemala And Costa Rica, Adriana Troyo, Danilo Alvarez, Lizeth Taylor, Gabriela Abdalla, Olger Calderon-Arguedas, Maria L. Zambrano, Gregory A. Dasch, Kim A. Lindblade, Laya Hun, Marina Eremeeva, Alejandra Estevez
Environmental Health Sciences Faculty Publications
Rickettsia felis is an emerging human pathogen associated primarily with the cat flea Ctenocephalides felis. In this study, we investigated the presence of Rickettsia felis in C. felis from Guatemala and Costa Rica. Ctenocephalides felis were collected directly from dogs and cats, and analyzed by polymerase chain reaction for Rickettsia-specific fragments of 17-kDa protein, OmpA, and citrate synthase genes. Rickettsia DNA was detected in 64% (55 of 86) and 58% (47 of 81) of flea pools in Guatemala and Costa Rica, respectively. Sequencing of gltA fragments identified R. felis genotype URRWXCal2 in samples from both countries, and genotype Rf2125 in …
An Investigation Of The Bioactivity Of Irish Seaweeds And Potential Applications As Nutraceuticals., Sabrina Cox
An Investigation Of The Bioactivity Of Irish Seaweeds And Potential Applications As Nutraceuticals., Sabrina Cox
Doctoral
The primary goals of this research were to; identify the bioactivity of a range of edible Irish seaweeds, to examine the current technological procedures currently applied with respect to seaweed processing and in light of this information, to examine the potential of incorporating seaweeds into traditional food products in order to enhance their nutraceutical properties. Currently most Irish seaweeds are washed, dried and packaged, with little done to increase consumer appeal or interest and dried seaweed may appear inaccessible and unfamiliar to consumers. Seaweeds possess an excellent nutritional quality, such as high fibre and phytochemical content, low cholesterol and low …
Validation Of Pcr-Based Assays And Laboratory Accreditation For Environmental Detection Of Aquatic Invasive Species, Invasive Species Advisory Committee
Validation Of Pcr-Based Assays And Laboratory Accreditation For Environmental Detection Of Aquatic Invasive Species, Invasive Species Advisory Committee
National Invasive Species Council
This white paper provides:
a) Background information on the use, accuracy and reliability of PCR-based assays such as environmentally sampled DNA (eDNA) for early detection of aquatic invasive species (AIS) and;
b) Recommendations for establishing a system for validating assays and accrediting laboratories that report on the presence or absence of AIS.
This white paper was developed by the members of ISAC and discusses the need for developing validation requirements for Polymerase Chain Reaction (PCR) and other DNA-based molecular assays that are increasingly being used to detect AIS. It does not provide a simplified checklist for evaluation of their ability …
San Antonio High School Food Justice Program: A Handbook And Evaluation Of Edible Education, Katherine B. Tenneson
San Antonio High School Food Justice Program: A Handbook And Evaluation Of Edible Education, Katherine B. Tenneson
Pitzer Senior Theses
This senior environmental studies thesis explains and analyzes edible education through a food and gardening program at a continuation high school in Claremont, California. The first chapter situates the program-specific analysis by providing background information of the edible education movement, a history of the Edible Schoolyard in Berkeley, California, and an explanation of why food is a powerful teaching tool. The second chapter delineates the program by describing all of its components and compiling essential resources and teaching documents. The third chapter is based on interviews with 9 of 12 involved students and 7 teachers, and thoroughly explains the outcomes …
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 “Green Eating” Project: A Pilot Intervention To Promote Sustainable And Healthy Eating In College Students, Kelleigh E. Eastman
The “Green Eating” Project: A Pilot Intervention To Promote Sustainable And Healthy Eating In College Students, Kelleigh E. Eastman
Senior Honors Projects
The “Green Eating” Project: A Pilot Intervention to Promote Sustainable and Healthy Eating in College Students
Kelleigh Eastman
Sponsor: Geoffrey Greene, Nutrition and Dietetics
A topic of interest that is growing in the general population is the idea of being sustainable, or “green”, and there is a rising awareness in sustainable practices involving food and the environment. Some of the “green” eating behaviors identified through my research included eating a plant-based (i.e. vegetarian or semi-vegetarian) diet, eating locally grown foods, eating organically grown foods, and eating foods that are labeled fair-trade. Frequently, these “green” eating behaviors are healthful eating behaviors …
Arsenic Contamination In Groundwater In Vietnam: An Overview And Analysis Of The Historical, Cultural, Economic, And Political Parameters In The Success Of Various Mitigation Options, Thuy M. Ly
Pomona Senior Theses
Although arsenic is naturally present in the environment, 99% of human exposure to arsenic is through ingestion. Throughout history, arsenic is known as “the king of poisons”; it is mutagenic, carcinogenic, and teratogenic. Even in smaller concentrations, it accumulates in the body and takes decades before any physical symptoms of arsenic poisoning shows. According to the World Health Organization (WHO), the safe concentration of arsenic in drinking water is 10 µg/L. However, this limit is often times ignored until it is decades too late and people begin showing symptoms of having been poisoned.
This is the current situation for Vietnam, …
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 …
The Usage Of Natural Fertilizers - A Practice That Favors The Ecological Agriculture Development In Romania, Andreea Ghiurcă, Andreea Lămășanu, Florin C. Mihai
The Usage Of Natural Fertilizers - A Practice That Favors The Ecological Agriculture Development In Romania, Andreea Ghiurcă, Andreea Lămășanu, Florin C. Mihai
Florin C MIHAI
Natural fertilizers were used in agriculture since ancient times and are still the best method of soil fertilization. Traditional agriculture, practiced in rural areas of Romania, contributes to the maintenance of soils fertilization ecological practices. Our research shows the evolution of the quantity of natural fertilizers used in the past 20 years at the national level and at the level of NeamŃ County captures the evolution over the seven years of natural fertilizers areas. In the analyzed period, the quantity of natural fertilizers on agricultural land is growing, but fertilized land record low values, showing that it has increased the …
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 …
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 …
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
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 …
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. …
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.
Slides: Natural Gas: Game Changer Or Runner Left On Base? Working To Get It Right In Co!, Gary Graham
Slides: Natural Gas: Game Changer Or Runner Left On Base? Working To Get It Right In Co!, Gary Graham
Drawing the Blueprint for a Sustainable Natural Gas Future (January 18)
Presenter: Dr. Gary Graham, Director, Lands Program, Western Resource Advocates
21 slides
Calcium Montmorillonite Clay Reduces Urinary Biomarkers Of Fumonisin B₁ Exposure In Rats And Humans, Abraham Robinson, Natalie M. Johnson, A. Strey, John F. Taylor, Alicia Marroquin-Cardona, N. J. Mitchell, Evans Afriyie-Gyawu, Nii-Ayi Ankrah, Jonathan H. Williams, Jia-Sheng Wang, Pauline E. Jolly, R. J. Nachman, Timothy D. Phillips
Calcium Montmorillonite Clay Reduces Urinary Biomarkers Of Fumonisin B₁ Exposure In Rats And Humans, Abraham Robinson, Natalie M. Johnson, A. Strey, John F. Taylor, Alicia Marroquin-Cardona, N. J. Mitchell, Evans Afriyie-Gyawu, Nii-Ayi Ankrah, Jonathan H. Williams, Jia-Sheng Wang, Pauline E. Jolly, R. J. Nachman, Timothy D. Phillips
Environmental Health Sciences Faculty Publications
Fumonisin B1 (FB1) is often a co-contaminant with aflatoxin (AF) in grains and may enhance AF’s carcinogenicity by acting as a cancer promoter. Calcium montmorillonite (i.e. NovaSil, NS) is a possible dietary intervention to help decrease chronic aflatoxin exposure where populations are at risk. Previous studies show that an oral dose of NS clay was able to reduce AF exposure in a Ghanaian population. In vitro analyses from our laboratory indicated that FB1 (like aflatoxin) could also be sorbed onto the surfaces of NS. Hence, our objectives were to evaluate the efficacy of NS clay to reduce urinary FB1 in …
Food Benefit And Climate Warming Potential Of Nitrogen Fertilizer Uses In China, Hanqin Tian, Chaoqun (Crystal) Lu, Jerry Melillo, Wei Ren, Yao Huang, Xiaofeng Xu, Mingliang Liu, Chi Zhang, Guangsheng Chen, Shufen Pan, Jiyuan Liu, John Reilly
Food Benefit And Climate Warming Potential Of Nitrogen Fertilizer Uses In China, Hanqin Tian, Chaoqun (Crystal) Lu, Jerry Melillo, Wei Ren, Yao Huang, Xiaofeng Xu, Mingliang Liu, Chi Zhang, Guangsheng Chen, Shufen Pan, Jiyuan Liu, John Reilly
Chaoqun (Crystal) Lu
Chemical nitrogen (N) fertilizer has long been used to help meet the increasing food demands in China, the top N fertilizer consumer in the world. Growing concerns have been raised on the impacts of N fertilizer uses on food security and climate change, which is lack of quantification. Here we use a carbon–nitrogen (C–N) coupled ecosystem model, to quantify the food benefit and climate consequence of agronomic N addition in China over the six decades from 1949 to 2008. Results show that N fertilizer-induced crop yield and soil C sequestration had reached their peaks, while nitrous oxide (N2O) emission continued …
Fishing For Animal Rights In The Cove: A Holistic Approach To Animal Advocacy Documentaries, Carrie Packwood Freeman
Fishing For Animal Rights In The Cove: A Holistic Approach To Animal Advocacy Documentaries, Carrie Packwood Freeman
Communication Faculty Publications
The Oscar-winning 2009 documentary The Cove serves as a thrilling and poignant advocacy tool promoting activism to save free-roaming dolphins off the coast of Japan from kidnapping, enslavement in marine parks, and slaughter for meat. This essay evaluates the ethical and social justice implications of The Cove not just for dolphins but for the animal rights movement as a whole, particularly in terms of how it could challenge the ethicality of humans killing any nonhuman animals for food. Strategic media recommendations are made for how animal protection advocates could better deconstruct the human/animal dualism that is at the root of …
Water Quality Trading Markets For The Kentucky River Basin: A Point Source Profile, Ronald Childress Jr.
Water Quality Trading Markets For The Kentucky River Basin: A Point Source Profile, Ronald Childress Jr.
Theses and Dissertations--Agricultural Economics
This study assessed the feasibility and suitability of a Water Quality Trading (WQT) program within the Kentucky River Basin (KRB). The study’s focal point was based on five success factors of a WQT program: environmental suitability, geospatial orientation, participant availability, regulatory incentive, and economic incentive. The study utilized these five success factors, geographical characteristics, and Discharge Monitoring Reports (DMR) to assess the feasibility of a WQT program.
The assessment divided the KRB into five eight digit Hydrologic Unit Codes (HUC), North, Middle, and South Fork, Middle Basin, and Lower Basin, to determine regional impacts caused by the nutrient PSs. Individual …
Reaching Into The Past For Future Resilience: Recovery Efforts In Maine Rivers And Coastal Waters, John Lichter, Ted Ames
Reaching Into The Past For Future Resilience: Recovery Efforts In Maine Rivers And Coastal Waters, John Lichter, Ted Ames
Maine Policy Review
John Lichter and Ted Ames discuss how analysis of environmental histories of human activities affecting Maine’s estuary, river, and coastal marine ecosystems can shed light on the role key fish species may play. Through Maine’s Sustainability Solutions Initiative, a group of researchers from Bowdoin, Bates, University of Southern Maine, and Penobscot East Resource Center have teamed up to examine ecological recovery in the state’s waterways and coastal fisheries. Several river restoration efforts were already underway, and others are being planned as a direct result of this interdisciplinary project.