Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Montana Tech Library (1808)
- University of Nebraska - Lincoln (263)
- University of Nevada, Las Vegas (156)
- Chapman University (80)
- University of Colorado Law School (66)
-
- Kennesaw State University (56)
- University of Louisville (55)
- Department of Primary Industries and Regional Development, Western Australia (34)
- University of New Mexico (34)
- Eastern Kentucky University (33)
- Portland State University (18)
- University of Southern Maine (18)
- Bemidji State University (17)
- Claremont Colleges (13)
- City University of New York (CUNY) (11)
- SIT Graduate Institute/SIT Study Abroad (11)
- Murray State University (10)
- University of Kentucky (10)
- California Polytechnic State University, San Luis Obispo (9)
- University of Dayton (9)
- Wilfrid Laurier University (9)
- Western Kentucky University (8)
- Montclair State University (7)
- Augustana College (6)
- Center for the Blue Economy (6)
- The University of San Francisco (6)
- University of Arkansas, Fayetteville (6)
- University of New England (6)
- Cal Poly Humboldt (5)
- Central Washington University (5)
- Keyword
-
- Priority Soils (389)
- Metals Abatement (228)
- Unreclaimed Sites (146)
- Field Sampling (135)
- Consent Decree (125)
-
- Quality Assurance (122)
- Groundwater (113)
- Insufficiently Reclaimed Sites (100)
- Indoor Dust (75)
- Berkeley Pit (67)
- Water quality (66)
- Soil Sampling (62)
- Environment (60)
- Butte Treatment Lagoon (57)
- Lead (56)
- Stormwater (54)
- Groundwater Monitoring (52)
- Smelter Area (52)
- Maintenance (50)
- Blacktail Creek (49)
- Environmental science (47)
- Monitoring (47)
- Surface Water Monitoring (47)
- Arsenic (46)
- Mercury (44)
- Sustainability (43)
- Pollution (42)
- Climate change (41)
- Envirome (40)
- Maintenance Report (40)
- Publication Year
- Publication
-
- Silver Bow Creek/Butte Area Superfund Site (1808)
- Daugherty Water for Food Global Institute: Faculty Publications (109)
- United States Environmental Protection Agency: Publications (97)
- Activities (55)
- Publications (WR) (53)
-
- Sustain Magazine (41)
- Mathematics, Physics, and Computer Science Faculty Articles and Research (40)
- Get Outdoors Nevada (38)
- EKU Faculty and Staff Scholarship (33)
- Water Matters! (32)
- Biology, Chemistry, and Environmental Sciences Faculty Articles and Research (28)
- Limnological Studies (18)
- Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3) (17)
- Nebraska Department of Environmental Quality: Reports (16)
- Best Practices for Community and Environmental Protection (October 14) (13)
- Department of Environmental Studies: Undergraduate Student Theses (13)
- Nebraska Water Center: Administrative Materials (13)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (13)
- Electronic Theses and Dissertations (12)
- Journal of Earth and Life Science (12)
- Maine Collection (12)
- Best Management Practices (BMPs): What? How? And Why? (May 26) (11)
- The Climate of Environmental Justice: Taking Stock (March 16-17) (11)
- Biosecurity factsheets (10)
- Environmental Science and Management Professional Master's Project Reports (9)
- Faculty and Staff Scholarship (9)
- Independent Study Project (ISP) Collection (9)
- Theses (9)
- Physics Faculty Publications (8)
- Department of Earth and Environmental Studies Faculty Scholarship and Creative Works (7)
- Publication Type
- File Type
Articles 2341 - 2370 of 2963
Full-Text Articles in Environmental Monitoring
The Erskine Fire And Public-Lands Management In The American West, Char Miller
The Erskine Fire And Public-Lands Management In The American West, Char Miller
Pomona Faculty Publications and Research
The Erskine Fire is big, fast and dangerous. Its power is evident in the tragic loss of life, the incineration of an estimated 150 structures and its rapid growth — more than 36,000 acres burned in its first 30 hours.
Modeling Of Soybean Under Present And Future Climates In Mozambique, Manuel António Dina Talacuece, Flávio Barbosa Justino, Rafael De Ávila Rodrigues, Milton Edgar Pereira Flores, Jéssica Garcia Nascimento, Eduardo Eduardo Santos
Modeling Of Soybean Under Present And Future Climates In Mozambique, Manuel António Dina Talacuece, Flávio Barbosa Justino, Rafael De Ávila Rodrigues, Milton Edgar Pereira Flores, Jéssica Garcia Nascimento, Eduardo Eduardo Santos
Daugherty Water for Food Global Institute: Faculty Publications
This study aims to calibrate and validate the generic crop model (CROPGRO-Soybean) and estimate the soybean yield, considering simulations with different sowing times for the current period (1990–2013) and future climate scenario (2014–2030). The database used came from observed data, nine climate models of CORDEX (Coordinated Regional climate Downscaling Experiment)-Africa framework and MERRA (Modern Era Retrospective-Analysis for Research and Applications) reanalysis. The calibration and validation data for the model were acquired in field experiments, carried out in the 2009/2010 and 2010/2011 growing seasons in the experimental area of the International Institute of Tropical Agriculture (IITA) in Angónia, Mozambique. The yield …
Odor Monitoring At The New Orleans East Bank Wastewater Treatment Plant, Felicia R. Figinsky
Odor Monitoring At The New Orleans East Bank Wastewater Treatment Plant, Felicia R. Figinsky
LSU New Orleans Theses and Dissertations
Hydrogen Sulfide is a corrosive, odorous, and hazardous gas that can cause issues for wastewater collection systems and treatment plants. When evaluating hydrogen sulfide concentrations it is important to consider the source, odor causing mechanism, and its level of toxicity. In this study, continuous hydrogen sulfide monitoring was performed for 8 locations within the New Orleans East Bank Wastewater Treatment Plant for a span of 5 months. Hot spots within the plant are located and data analysis is performed based on daily and hourly averages of hydrogen sulfide concentrations. The data was configured to show peak hydrogen sulfide concentrations at …
The Use Of Semi-Structured Interviews For The Characterisation Of Farmer Irrigation Practices, Jimmy O’Keeffe, Wouter Buytaert, Ana Mijic, N. Brozovic, Rajiv Sinha
The Use Of Semi-Structured Interviews For The Characterisation Of Farmer Irrigation Practices, Jimmy O’Keeffe, Wouter Buytaert, Ana Mijic, N. Brozovic, Rajiv Sinha
Daugherty Water for Food Global Institute: Faculty Publications
For the development of sustainable and realistic water security, generating information on the behaviours, characteristics, and drivers of users, as well as on the resource itself, is essential. In this paper we present a methodology for collecting qualitative and quantitative data on water use practices through semi-structured interviews. This approach facilitates the collection of detailed information on actors’ decisions in a convenient and cost-effective manner. Semi-structured interviews are organised around a topic guide, which helps lead the conversation in a standardised way while allowing sufficient opportunity for relevant issues to emerge. In addition, they can be used to obtain certain …
Compost Land Management And Soil Carbon Sequestration, Kylene A. Hohman
Compost Land Management And Soil Carbon Sequestration, Kylene A. Hohman
Senior Honors Projects, 2010-2019
Extensive fossil fuel burning has released carbon dioxide into the atmosphere. Under proper ecological conditions plants convert atmospheric carbon dioxide into stable soil organic matter, a natural and efficient means of mitigating climate change. In the symbiotic relationship between mycorrhizae and plants, mycorrhizae provide plants with essential nutrients in exchange for carbon sugars leaked from the plants. Mycorrhizae convert carbon sugars to an exudate called glomalin, a protein that assists in developing soil aggregates composed of sand, silt, and clay. These aggregates, called humus, store carbon for hundreds of years under healthy ecological conditions. Compost prompts soil microbes to aerobically …
Patterns And Sources Of Anthropogenic Contaminants In The Otter Creek Watershed, Madison County, Kentucky, Elijah J. Wolfe
Patterns And Sources Of Anthropogenic Contaminants In The Otter Creek Watershed, Madison County, Kentucky, Elijah J. Wolfe
EKU Faculty and Staff Scholarship
Stream systems are often affected by anthropogenic activities that affect water quality and stream ecosystems. Land use typically determines the type and quantity of anthropogenic contaminants entering natural waters. The Otter Creek watershed (170 km2; Madison County, Kentucky) consists predominantly of pasture and rural housing, with some cropland. The basin also receives runoff from the town of Richmond and a sewage treatment plant operates within the watershed. We measured concentrations of nutrients (phosphate, ammonium, nitrate) and fecal microbes to discover levels of anthropogenic contaminants affecting water quality and to identify contaminant sources.
We sampled 4 times in the …
Mapping Evapotranspiration With High-Resolution Aircraft Imagery Over Vineyards Using One- And Two-Source Modeling Schemes, Ting Xia, William P. Kustas, Martha C. Anderson, Joseph G. Alfieri, Feng Gao, Lynn Mckee, John H. Prueger, Hatim M.E. Geli, C.M.U. Neale, Luis Sanchez, Maria Mar Alsina, Zhongjing Wang
Mapping Evapotranspiration With High-Resolution Aircraft Imagery Over Vineyards Using One- And Two-Source Modeling Schemes, Ting Xia, William P. Kustas, Martha C. Anderson, Joseph G. Alfieri, Feng Gao, Lynn Mckee, John H. Prueger, Hatim M.E. Geli, C.M.U. Neale, Luis Sanchez, Maria Mar Alsina, Zhongjing Wang
Daugherty Water for Food Global Institute: Faculty Publications
Thermal and multispectral remote sensing data from low-altitude aircraft can provide high spatial resolution necessary for sub-field ( 10 m) and plant canopy (1 m) scale evapotranspiration (ET) monitoring. In this study, highresolution (sub-meter-scale) thermal infrared and multispectral shortwave data from aircraft are used to map ET over vineyards in central California with the two-source energy balance (TSEB) model and with a simple model having operational immediate capabilities called DATTUTDUT (Deriving Atmosphere Turbulent Transport Useful To Dummies Using Temperature). The latter uses contextual information within the image to scale between radiometric land surface temperature (TR) values representing hydrologic limits of …
Avifaunal Community Composition In A Tropical Forest Corridor: A Case Study From The Atherton Tableland, North Queensland, Don Jones
Independent Study Project (ISP) Collection
Bird communities in tropical forest ecosystems are highly threatened by habitat loss and fragmentation. Replanted corridors connecting isolated forest remnants are a popular method of ameliorating certain negative impacts of habitat fragmentation. Such linkages can theoretically facilitate greater dispersal, increase gene flow, and reduce the risk of local extinctions in forest birds. However, relatively few studies have examined the utilization of reforested corridors by birds, and little hard data exists to support claims that this type of resource and time intensive project is the best use of often scarce funding for conservation. This study examined the avifaunal community present in …
Environmental Variables Affecting The Performance Of Large-Scale Solar Photovoltaic Power Plants, Parikhit Sinha
Environmental Variables Affecting The Performance Of Large-Scale Solar Photovoltaic Power Plants, Parikhit Sinha
Climate Sustainability Lecture Series
The environmental sciences have been critical to identifying global environmental challenges such as climate change, but they have been less extensively utilized in deploying solutions to those challenges, such as solar energy. Environmental variables such as temperature, humidity, aerosols, clouds, soiling, and snowfall have important effects on solar PV performance, and these effects can vary regionally. The current status of large-scale solar PV deployment will be discussed along with the role of environmental variables on PV performance.
Estimating Evapotranspiration Of An Apple Orchard Using A Remote Sensing-Based Soil Water Balance, Magali Odi-Lara, Isidro Campos, C.M.U. Neale, Samuel Ortega-Farías, Carlos Poblete-Echeverria, Claudio Balbontín, Alfonso Calera
Estimating Evapotranspiration Of An Apple Orchard Using A Remote Sensing-Based Soil Water Balance, Magali Odi-Lara, Isidro Campos, C.M.U. Neale, Samuel Ortega-Farías, Carlos Poblete-Echeverria, Claudio Balbontín, Alfonso Calera
Daugherty Water for Food Global Institute: Faculty Publications
The main goal of this research was to estimate the actual evapotranspiration (ETc) of a drip-irrigated apple orchard located in the semi-arid region of Talca Valley (Chile) using a remote sensing-based soil water balance model. The methodology to estimate ETc is a modified version of the Food and Agriculture Organization of the United Nations (FAO) dual crop coefficient approach, in which the basal crop coefficient (Kcb) was derived from the soil adjusted vegetation index (SAVI) calculated from satellite images and incorporated into a daily soil water balance in the root zone. A linear relationship between the Kcb and SAVI was …
Powering The Planet: The Role Chemistry Plays In Solar Energy Technology, Amy M. Scott
Powering The Planet: The Role Chemistry Plays In Solar Energy Technology, Amy M. Scott
Climate Sustainability Lecture Series
Global energy demands are projected to double by 2050, according to the U.S. Department of Energy, and solar energy has the greatest potential as the most benign, universal resource for generating electricity. However, harnessing the solar energy efficiently and converting it towards useful forms of power that are compatible with our current infrastructure remains an elusive goal. Today’s solar energy utilization relies on silicon-based photovoltaic (PV) technology, which converts photon energy to electrical energy. The efficiency of these devices remains low (< 30%) and the cost of processing silicon and installing solar panels in homes makes PV uneconomical compared to the current price of electricity. Research efforts towards developing new inorganic and organic materials for thin film PV to replace silicon are currently underway. Organic materials are particularly interesting from the standpoint of developing simple, cheap materials that can be easily tailored for future PV devices. The future of solar energy utilization relies on developing solar paints for vehicles, solar shingles for rooftops, and spray-on solar ink for small device applications, but continued fundamental research is needed for decreasing cost and improving efficiency for next generation devices.
Patterns And Sources Of Anthropogenic Contaminants In The Otter Creek Watershed, Madison County, Kentucky, Elijah D. Wolfe, Walter S. Borowski, Jacob L. Robin
Patterns And Sources Of Anthropogenic Contaminants In The Otter Creek Watershed, Madison County, Kentucky, Elijah D. Wolfe, Walter S. Borowski, Jacob L. Robin
EKU Faculty and Staff Scholarship
Stream systems are often affected by anthropogenic contaminants that affect water quality and stream ecosystems. Land use determines the type and quantity of contaminants present in natural waters. The Otter Creek watershed (170 km2; Madison County, Kentucky) consists predominantly of pasture and rural housing, with some cropland. The basin also receives runoff from the town of Richmond and a sewage treatment plant operates within the watershed. We measured concentrations of nutrients (phosphate, ammonium, nitrate) and fecal microbes to discover levels of anthropogenic contaminants affecting water quality and to identify contaminant sources.
We sampled 4 times in the summer …
Four Billion People Facing Severe Water Scarcity, Mesfin Mekonnen, Arjen Y. Hoekstra
Four Billion People Facing Severe Water Scarcity, Mesfin Mekonnen, Arjen Y. Hoekstra
Daugherty Water for Food Global Institute: Faculty Publications
Freshwater scarcity is increasingly perceived as a global systemic risk. Previous global water scarcity assessments, measuring water scarcity annually, have underestimated experienced water scarcity by failing to capture the sea- sonal fluctuations in water consumption and availability. We assess blue water scarcity globally at a high spatial resolution on a monthly basis. We find that two-thirds of the global population (4.0 billion people) live under conditions of severe water scarcity at least 1 month of the year. Nearly half of those people live in India and China. Half a billion people in the world face severe water scarcity all year …
Proposing A Sustainable Tourism Framework For The Philippines, Michael Angelo A. Cortez, John Paolo R. Rivera
Proposing A Sustainable Tourism Framework For The Philippines, Michael Angelo A. Cortez, John Paolo R. Rivera
Center for Business Research and Development
The travel and tourism (T&T) industry has become a major contributor to growth and development in most economies across the globe (World Travel & Tourism Council [WTTC], 2014). The industry has significantly increased its gross value added (GVA) to the well-being of stakeholders through its direct economic impacts; and indirect and induced impacts to its forward and backward linkages. As such, according to Roe (2001), the T&T evolved into the world’s largest industries, generating approximately 11 percent of the global Gross Domestic Product (GDP), providing 200 million job opportunities, and transporting nearly 700 million international travellers annually.
A Compact To Revitalise Large-Scale Irrigation Systems Using A Leadership-Partnership-Ownership 'Theory Of Change', Bruce Lankford, Ian Makin, Nathanial Matthews, Peter G. Mccornick, Andrew Noble, Tushaar Shah
A Compact To Revitalise Large-Scale Irrigation Systems Using A Leadership-Partnership-Ownership 'Theory Of Change', Bruce Lankford, Ian Makin, Nathanial Matthews, Peter G. Mccornick, Andrew Noble, Tushaar Shah
Daugherty Water for Food Global Institute: Faculty Publications
In countries with transitional economies such as those found in South Asia, large-scale irrigation systems (LSIS) with a history of public ownership account for about 115 million ha (Mha) or approximately 45% of their total area under irrigation. In terms of the global area of irrigation (320 Mha) for all countries, LSIS are estimated at 130 Mha or 40% of irrigated land. These systems can potentially deliver significant local, regional, and global benefits in terms of food, water and energy security, employment, economic growth, and ecosystem services. For example, primary crop production is conservatively valued at about US$355 billion. However, …
Controlling Groundwater Exploitation Through Economic Instruments: Current Practices, Challenges And Innovative Approaches, Marielle Montginoul, Jean-Daniel Rinaudo, N. Brozovic, G. Donoso
Controlling Groundwater Exploitation Through Economic Instruments: Current Practices, Challenges And Innovative Approaches, Marielle Montginoul, Jean-Daniel Rinaudo, N. Brozovic, G. Donoso
Daugherty Water for Food Global Institute: Faculty Publications
Groundwater can be considered as a common-pool resource, is often overexploited and, as a result, there are growing management pressures. This chapter starts with a broad presentation of the range of economic instruments that can be used for groundwater management, considering current practices and innovative approaches inspired from the literature on Common Pool Resources management. It then goes on with a detailed presentation of groundwater allocation policies implemented in France, the High Plains aquifer in the USA, and Chile. The chapter concludes with a discussion of social and political difficulties associated with implementing economic instruments for groundwater management.
Hydrothermal Monitoring In Yellowstone National Park Using Airborne Thermal Infrared Remote Sensing, C. M. U. Neale, C. Jaworowski, H. Heasler, S. Sivarajan, A. Masih
Hydrothermal Monitoring In Yellowstone National Park Using Airborne Thermal Infrared Remote Sensing, C. M. U. Neale, C. Jaworowski, H. Heasler, S. Sivarajan, A. Masih
Daugherty Water for Food Global Institute: Faculty Publications
This paper describes the image acquisition and processing methodology, including surface emissivity and atmospheric corrections, for generating surface temperatures of two active hydrothermal systems in Yellowstone National Park. Airborne thermal infrared (8–12 μm) images were obtained annually from 2007 to 2012 using a FLIR SC640 thermal infrared camera system. Thermal infrared image acquisitions occurred under clear-sky conditions after sunset to meet the objective of providing high-spatial resolution, georectified imagery for hydrothermal monitoring. Comparisons of corrected radiative temperature maps with measured ground and water kinetic temperatures at flight times provided an assessment of temperature accuracy. A repeatable, time-sequence of images for …
Demonstration And Evaluation Of Dual Purpose Chicken “Potchefstroom Koekoek” Packages At Areka Areas, Snnpr, Ethiopia, Aman Getiso, Melese Yilma, Mesfin Mekonnen, Addisu Jimma, Mebratu Asrat, Asrat Tera, Endrias Dako
Demonstration And Evaluation Of Dual Purpose Chicken “Potchefstroom Koekoek” Packages At Areka Areas, Snnpr, Ethiopia, Aman Getiso, Melese Yilma, Mesfin Mekonnen, Addisu Jimma, Mebratu Asrat, Asrat Tera, Endrias Dako
Daugherty Water for Food Global Institute: Faculty Publications
The demonstration was conducted in Wolaita zone, Boloso Sore district at Areka and around Areka areas. Participants (farmers) were selected purposively on the basis of willingness to construct poultry house; to cover all the associated package costs and record the required was selected. Survival of chicks during the first 8 weeks of brooding using hay-box at the farmers management condition was 79.8% (359 were survived out 450). On average about 93.1% of the chicken were survived to the laying age while mortality reduced from 20.2% to 6.9%. The average age at first egg-laying recorded at each farmers was 142 days …
Anthropogenic Nitrogen And Phosphorus Emissions And Related Grey Water Footprints Caused By Eu-271s Crop Production And Consumption, Mesfin Mekonnen, Stephan Lutter, Aldo Martinez
Anthropogenic Nitrogen And Phosphorus Emissions And Related Grey Water Footprints Caused By Eu-271s Crop Production And Consumption, Mesfin Mekonnen, Stephan Lutter, Aldo Martinez
Daugherty Water for Food Global Institute: Faculty Publications
Water is a prerequisite for life on our planet. Due to climate change and pollution, water availability for agricultural production, industry and households is increasingly put at risk. With agriculture being the largest water user as well as polluter worldwide, we estimate anthropogenic nitrogen and phosphorus emissions to fresh water related to global crop production at a spatial resolution level of 5 by 5 arc min and calculate the grey water footprints (GWF) related to EU-271s crop production. A multiregional input-output model is used to trace the the GWF embodied in the final consumption of crop products by the EU-27. …
Ex-Situ Conservation Programs: Worthwhile?, Nicolette Sliwa, Aaron Sieve
Ex-Situ Conservation Programs: Worthwhile?, Nicolette Sliwa, Aaron Sieve
Biology: Student Scholarship & Creative Works
The effectiveness of conservation programs was researched, specifically within zoos, and their attempts to repopulate areas with captive-born individuals of endangered species. There are major biological and economic concerns with these programs focused on, including potential genetic adaptation to captivity, effects of inbreeding, and if this is a truly worthwhile use of funds to restore a species. Looking at the black-footed ferret, the whooping crane, and other supposed successful captive-breeding programs, it is explored whether reintroduced individuals thrive in their new habitats sufficiently enough to contribute to the restoration of the species, and more broadly, their ecosystems.
2016 Nebraska Water Monitoring Programs Report, Marty Link, Ryan Chapman
2016 Nebraska Water Monitoring Programs Report, Marty Link, Ryan Chapman
Nebraska Department of Environmental Quality: Reports
The Nebraska Department of Environmental Quality (NDEQ) is charged with monitoring, assessing, and to the extent possible, managing the state’s water resources. The purpose of this work is to protect and maintain high quality water and encourage or execute activities to improve poor water quality. Monitoring is done on nearly 17,000 miles of flowing rivers and streams, more than 134,000 acres of surface water in lakes and reservoirs, as well as the vast storage of groundwater in Nebraska’s aquifers.
Nebraska Water Center Annual Report 2016, Nebraska Water Center
Nebraska Water Center Annual Report 2016, Nebraska Water Center
Nebraska Water Center: Administrative Materials
Contents
Foreword
Director’s Letter
Since 1964: The Nebraska Water Center
Building the future
Nebraska’s Top 10 water challenges
Nebraska Water Center advisory board
Water Resources Advisory Panel: A key to success
Nebraska Water Sciences Laboratory
USGS 104b projects for 2016
Ogallala Aquifer focus of USDA research grant
Graduate research on amphetamines draws attention
NIC hosts water symposium and law conference
Water seminar lectures key on “Water and health”
Four picked for IRES program in Czech Republic
WARI program begins
2016 tour to Colorado’s South Platte basin
45th annual tour visits Platte River basin in Colorado
McCornick new Water for Food …
Nebraska Water Center (Brochure ), Nebraska Water Center
Nebraska Water Center (Brochure ), Nebraska Water Center
Nebraska Water Center: Administrative Materials
The Nebraska Water Center was established in 1964 as one of 54 Water Resources Research Institutes nationwide with passage of the first Clean Water Act. It facilitates the University of Nebraska-Lincoln’s land grant missions in research, extension and teaching in water science, law and policy to address water quantity and quality issues of priority to Nebraska. NWC helps water researchers by awarding small grants, conducting water-related education and outreach activities for stakeholders, and disseminating research results through media, colloquia, conferences, lectures, and tours. NWC provides state-of-the-art analytical technology to conduct water research and education to scientists and engineers, helping them …
Alpha-Lipoic Acid Supplementation Protects Enzymes From Damage By Nitrosative And Oxidative Stress, Sylvia Hiller, Robert Dekroon, Eric D. Hamlett, Longquan Xu, Cristina Osorio, Jennifer Robinette, Witold Winnik, Stephen Simington, Nobuyo Maeda, Oscar Alzate, Xianwen Yi
Alpha-Lipoic Acid Supplementation Protects Enzymes From Damage By Nitrosative And Oxidative Stress, Sylvia Hiller, Robert Dekroon, Eric D. Hamlett, Longquan Xu, Cristina Osorio, Jennifer Robinette, Witold Winnik, Stephen Simington, Nobuyo Maeda, Oscar Alzate, Xianwen Yi
United States Environmental Protection Agency: Publications
Background: S-nitrosylation of mitochondrial enzymes involved in energy transfer under nitrosative stress may result in ATP deficiency. We investigated whether α-lipoic acid, a powerful antioxidant, could alleviate nitrosative stress by regulating S-nitrosylation,which could result in retaining themitochondrial enzyme activity.
Methods: In this study, we have identified the S-nitrosylated forms of subunit 1 of dihydrolipoyllysine succinyltransferase (complex III), and subunit 2 of the α-ketoglutarate dehydrogenase complex by implementing a fluorescence-based differential quantitative proteomics method.
Results: We found that the activities of these two mitochondrial enzymes were partially but reversibly inhibited by S-nitrosylation in cultured endothelial cells, and that their activities …
Estimating Ozone And Secondary Pm2.5 Impacts From Hypothetical Single Source Emissions In The Central And Eastern United States, Kirk R. Baker, Robert A. Kotchenruther, Rynda C. Hudman
Estimating Ozone And Secondary Pm2.5 Impacts From Hypothetical Single Source Emissions In The Central And Eastern United States, Kirk R. Baker, Robert A. Kotchenruther, Rynda C. Hudman
United States Environmental Protection Agency: Publications
Secondary pollutant impacts from emissions of single sources may need to be assessed to satisfy a variety of regulatory requirements including the Clean Air Act New Source Review and Prevention of Significant Deterioration programs and the National Environmental Policy Act. In this work, single source impacts on O3 and secondary PM2.5 are estimated with annual 2011 photochemical grid model simulations where new hypothetical sources are added to the central and eastern United States with varying precursor emission rates and emission release heights. Impacts from these hypothetical sources are tracked with photochemical grid model source apportionment. Single source impacts …
Seasonality Of Coliform Bacteria Detection Rates In New Jersey Domestic Wells, Thomas B. Atherholt, Nicholas A. Procopio, Sandra M. Goodrow
Seasonality Of Coliform Bacteria Detection Rates In New Jersey Domestic Wells, Thomas B. Atherholt, Nicholas A. Procopio, Sandra M. Goodrow
United States Environmental Protection Agency: Publications
It is important that indicators of fecal pollution are reliable. Coliform bacteria are a commonly used indicator of fecal pollution. As other investigators have reported elsewhere, we observed a seasonal pattern of coliform bacteria detections in domestic wells in New Jersey. Examination of a statewide database of 10 years of water quality data from 93,447 samples, from 78,207 wells, generated during real estate transactions, revealed that coliform bacteria were detected in a higher proportion of wells during warm weather months. Further examination of the seasonal pattern of other data, including well water pH, precipitation, ground and surface water temperatures, surface …
Temporal Trends In The Spatial Distribution Of Impervious Cover Relative To Stream Location, J. Wickham, A. Neale, M. Mehaffey, T. Jarnagin, D. Norton
Temporal Trends In The Spatial Distribution Of Impervious Cover Relative To Stream Location, J. Wickham, A. Neale, M. Mehaffey, T. Jarnagin, D. Norton
United States Environmental Protection Agency: Publications
Use of impervious cover is transitioning from an indicator of surface water condition to one that also guides and informs watershed planning and management, including Clean Water Act (33 U.S.C. §1251 et seq.) reporting. Whether it is for understanding surface water condition or planning and management, impervious cover is most commonly expressed as summary measurement (e.g., percentage watershed in impervious cover). We use the National Land Cover Database to estimate impervious cover in the vicinity of surface waters for three time periods (2001, 2006, 2011). We also compare impervious cover in the vicinity of surface waters to watershed summary estimates …
Cyanotoxins In Inland Lakes Of The United States: Occurrence And Potential Recreational Health Risks In The Epa National Lakes Assessment 2007, Keith A. Loftin, Jennifer L. Graham, Elizabeth D. Hillborn, Sarah C. Lehmann, Michael T. Meyer, Julie E. Dietze, Christopher B. Griffith
Cyanotoxins In Inland Lakes Of The United States: Occurrence And Potential Recreational Health Risks In The Epa National Lakes Assessment 2007, Keith A. Loftin, Jennifer L. Graham, Elizabeth D. Hillborn, Sarah C. Lehmann, Michael T. Meyer, Julie E. Dietze, Christopher B. Griffith
United States Environmental Protection Agency: Publications
A large nation-wide survey of cyanotoxins (1161 lakes) in the United States (U.S.) was conducted during the EPA National Lakes Assessment 2007. Cyanotoxin data were compared with cyanobacteria abundance- and chlorophyll-based World Health Organization (WHO) thresholds and mouse toxicity data to evaluate potential recreational risks. Cylindrospermopsins, microcystins, and saxitoxins were detected (ELISA) in 4.0, 32, and 7.7% of samples with mean concentrations of 0.56, 3.0, and 0.061 mg/L, respectively (detections only). Co-occurrence of the three cyanotoxin classes was rare (0.32%) when at least one toxin was detected. Cyanobacteria were present and dominant in 98 and 76% of samples, respectively. Potential …
Carbon Storage In Us Wetlands, A. M. Nahlik, M. S. Fennessy
Carbon Storage In Us Wetlands, A. M. Nahlik, M. S. Fennessy
United States Environmental Protection Agency: Publications
Wetland soils contain some of the highest stores of soil carbon in the biosphere. However, there is little understanding of the quantity and distribution of carbon stored in our remaining wetlands or of the potential effects of human disturbance on these stocks. Here we use field data from the 2011 National Wetland Condition Assessment to provide unbiased estimates of soil carbon stocks for wetlands at regional and national scales. We find that wetlands in the conterminous United States store a total of 11.52 PgC, much of which is within soils deeper than 30 cm. Freshwater inland wetlands, in part due …
2016 Nebraska Groundwater Quality Monitoring Report
2016 Nebraska Groundwater Quality Monitoring Report
Nebraska Department of Environmental Quality: Reports
The 2001 Nebraska Legislature passed LB329 (Neb. Rev. Stat. §46-1304) which, in part, directed the Nebraska Department of Environmental Quality (NDEQ) to report on groundwater quality monitoring in Nebraska. Reports have been issued annually since December 2001. The text of the statute applicable to this report follows: “The Department of Environmental Quality shall prepare a report outlining the extent of ground water quality monitoring conducted by natural resources districts during the preceding calendar year. The department shall analyze the data collected for the purpose of determining whether or not ground water quality is degrading or improving and shall present the …