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Articles 1 - 30 of 35
Full-Text Articles in Environmental Sciences
Evaporation Of Jet Fuels, Charles Eric Hack
Evaporation Of Jet Fuels, Charles Eric Hack
Theses and Dissertations
Determining the fate and transport of JP-8 jet fuel is a complex and important problem. As part of the startup procedures for jet engines, fuel is passed through aircraft engines before combustion is initiated. Because of the extremely low temperatures at northern tier Air Force bases, the unburned fuel does not evaporate readily and may come into contact with ground crew. To determine the amount and duration of contaminant contact, the evaporation of the emitted fuel must be modeled. The amount and composition of the fuel upon reaching the ground crew may be determined by droplet evaporation models that have …
Preliminary Investigation Of The Extent Of Sediment Contamination In The Lower Grand River, Richard Rediske, Carissa Bertin, Jessica Blunt, Min Qi
Preliminary Investigation Of The Extent Of Sediment Contamination In The Lower Grand River, Richard Rediske, Carissa Bertin, Jessica Blunt, Min Qi
Scientific Technical Reports
A preliminary investigation of the nature and extent of sediment contamination in the lower Grand River was performed. Three areas in the lower Grand River exceeded sediment quality guidelines for heavy metals and selected organic chemicals. The locations and parameters of concern are listed below:
Harbor Island (G20). Exceeds sediment PEL values for chromium, lead, nickel, and DDE in the top core section. Deeper core sections were extensively contaminated with heavy metals.
Spring Lake (G6). Exceeds sediment PEL values for chromium, lead, cadmium, nickel, and DDE.
Grand Haven (G12). Exceeds sediment PEL values for chromium and nickel. The sediments at …
Trends. Social Cognition And Global Warming, Ibpp Editor
Trends. Social Cognition And Global Warming, Ibpp Editor
International Bulletin of Political Psychology
The article discusses the validity of global warming and on putative causes of the discourse and--if ontologically valid--of global warming, one might entertain the social psychology of how people might address a global environmental threat.
Cavefish Population Status And Environmental Quality In Cave Springs Cave, Arkansas - Final Report Submitted To Arkansas Natural Heritage Commission, G. O. Graening, Arthur V. Brown
Cavefish Population Status And Environmental Quality In Cave Springs Cave, Arkansas - Final Report Submitted To Arkansas Natural Heritage Commission, G. O. Graening, Arthur V. Brown
Technical Reports
This report summarizes the continuing effort to monitor environmental quality in the Cave Springs Cave Natural Area and to implement the Ozark Cavefish Recovery Plan. Last year’s report (Brown et al., 1998) identified certain environmental stressors, including a trend over 15 years of increasing nutrient pollution, a low cavefish population count of only 106, and the presence of heavy metals in the cave water and one semi-volatile organic compound (the phthalate DEHP at 500 ppb) in resident crayfish tissue. This year’s monitoring effort demonstrates that fecal coliforms continue to exceed Arkansas State Water Quality Standards (Regulation 2), sometimes by a …
A Model Of Organizational Responsiveness To Stakeholders, Caron Chess
A Model Of Organizational Responsiveness To Stakeholders, Caron Chess
RISK: Health, Safety & Environment (1990-2002)
Dr. Chess explores the relationship between risk management and risk communication and its affect on an organization/stakeholder relationship.
Basic Science And Risk Communication: A Dialogue-Based Study, Char J. Word, Anna K. Harding, Gordon R. Bilyard, James R. Weber
Basic Science And Risk Communication: A Dialogue-Based Study, Char J. Word, Anna K. Harding, Gordon R. Bilyard, James R. Weber
RISK: Health, Safety & Environment (1990-2002)
The authors use ethnographic analysis of a focus group discussion between scientists and laypersons to study information exchange in risk communication.
Elizabeth River Tbt Monitoring Report On Tbt Methodology Detection Limit, Precision And Linearity, Michael A. Unger
Elizabeth River Tbt Monitoring Report On Tbt Methodology Detection Limit, Precision And Linearity, Michael A. Unger
Reports
The purpose of this project was to determine the accuracy, precision, linearity and Method Detection Limit (MDL) for tributyltin (TBT) analytical techniques available at the Virginia Institute of Marine Science prior to implementing an environmental monitoring program in the Elizabeth River, Virginia. This precursory work is to document the ability of analytical techniques to accurately detect TBT in ambient water samples at concentrations of 1 ng/L and greater.
Measurement Of Free Radicals Oh And Ho₂ In Los Angeles Smog, Linda Acha George, Thomas M. Hard, Robert J. O'Brien
Measurement Of Free Radicals Oh And Ho₂ In Los Angeles Smog, Linda Acha George, Thomas M. Hard, Robert J. O'Brien
Environmental Science and Management Faculty Publications and Presentations
Atmospheric free radicals hydroxyl and hydroperoxyl (OH and HO₂, collectively HOᵪ ) are the catalysts that cause secondary or photochemical air pollution. Chemical mechanisms for oxidant and acid formation, on which expensive air pollution control strategies are based, must accurately predict these radical concentrations. We have used the fluorescence assay with gas expansion (FAGE) technique to carry out the first simultaneous, in situ measurements of these two radicals in highly polluted air during the Los Angeles Free Radical Experiment. A complete suite of ancillary measurements was also made, including speciated hydrocarbons, carbon monoxide, aldehydes, nitric oxide, nitrogen dioxide, and ozone …
Close-Range And Satellite Remote Sensing Of Algal Biomass In The Iowa Great Lakes, Eric A. Wilson
Close-Range And Satellite Remote Sensing Of Algal Biomass In The Iowa Great Lakes, Eric A. Wilson
Department of Geography: Dissertations, Theses, and Student Research
The utility of both close-range and satellite remote sensing for assessing inland water quality was examined in the Iowa Great Lakes. The water quality of this system is of considerable interest because of its status as an environmental, recreational, and therefore, economic resource. The broad range of optical conditions present in the lakes and the wealth of literature on the system make it an ideal environment for water quality remote sensing research. The goal of this research was to survey the water quality of the Iowa Great Lakes via remote sensing, evaluate different predictive algorithms, and map the distribution of …
Lake Whatcom Monitoring Project 1997/1998 Report, Robin A. Matthews, Michael Hilles, Geoffrey B. Matthews
Lake Whatcom Monitoring Project 1997/1998 Report, Robin A. Matthews, Michael Hilles, Geoffrey B. Matthews
Lake Whatcom Annual Reports
This report is part of an on-going series of annual reports and special project reports that document the Lake Whatcom monitoring program.
This work is conducted by the Institute for Watershed Studies and other departments at Western Washington University. The major objective of this program is to provide long-term baseline water quality monitoring in Lake Whatcom and selected tributaries. Each section contains brief explanations about the water quality data, along with discussions of patterns observed in Lake Whatcom.
Intermediate Rings Between A Local Domain And Its Completion, William Heinzer, Christel Rotthaus, Sylvia Wiegand
Intermediate Rings Between A Local Domain And Its Completion, William Heinzer, Christel Rotthaus, Sylvia Wiegand
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
We consider the structure of certain intermediate domains between a local Noetherian domain Rand an ideal-adic completion R* of R that arise as the intersection of R* with a field containing R. In the case where the intersection domain A can be expressed as a directed union of localized polynomial extension rings of R, the computation of A is easier. We examine conditions for this to happen. We also present examples to motivate and illustrate the concepts considered.
Estuarine Water Quality Monitoring Network 1998 Annual Report, Ronald Jones, Joseph N. Boyer
Estuarine Water Quality Monitoring Network 1998 Annual Report, Ronald Jones, Joseph N. Boyer
SERC Research Reports
No abstract provided.
Arizona Source Water Assessment Plan Final Draft, Arizona Department Of Environmental Quality
Arizona Source Water Assessment Plan Final Draft, Arizona Department Of Environmental Quality
Publications (WR)
The safe drinking water amendments of 1996 placed a strong emphasis on the goal to establish a nationwide effort to protect drinking water sources. As part of that goal, the legislation provided for a preliminary assessment of drinking water sources and an inventory of surrounding adjacent land use (ALUs). This nationwide effort will result in the first comprehensive look at the nation's drinking water sources from an assessment perspective. One of the outcomes of this nationwide assessment will be information that public water systems (PWSs) can use to help determine appropriate monitoring frequencies and to protect their sources of drinking …
Internal Temperature Of Douglas-Fir Buds Is Altered At Elevated Temperature, Martha E. Apple, Melissa S. Lucash, David M. Olszyk, David T. Tingey, Donald L. Phillips
Internal Temperature Of Douglas-Fir Buds Is Altered At Elevated Temperature, Martha E. Apple, Melissa S. Lucash, David M. Olszyk, David T. Tingey, Donald L. Phillips
Environmental Science and Management Faculty Publications and Presentations
Pseudotsuga menziesii (Douglas-fir) saplings were grown in sun-lit controlled environment chambers at ambient or elevated (4°C above ambient) temperature. We measured internal temperatures of vegetative buds with thermocouple probes and compared temperatures of normal buds and abnormal buds with loosened, rosetted outer scales in elevated temperature chambers. The abnormal buds had higher and earlier peak daily temperatures than normal buds. Elevated temperature may influence the internal temperature of buds and contribute to the development of abnormal, rosetted buds with loosened outer scales. Abnormal bud development may alter branching patterns and allometry of Douglas-fir trees subjected to climatic change.
Shoreline Management Plan With Habitat Enhancement For Town Of Saxis, Virginia, C. Scott Hardaway Jr., Donna A. Milligan, George R. Thomas, Rebecca C.H. Brindley, Lyle M. Varnell, Walter L. Priest, Sharon Dewing
Shoreline Management Plan With Habitat Enhancement For Town Of Saxis, Virginia, C. Scott Hardaway Jr., Donna A. Milligan, George R. Thomas, Rebecca C.H. Brindley, Lyle M. Varnell, Walter L. Priest, Sharon Dewing
Reports
The goal of the present study is to identify the best course of action to manage shoreline erosion in Saxis and to provide a detailed Shoreline Management Plan with Habitat Enhancement which can be presented to potential State and Federal funding agencies. While the Plan itself will not resolve the erosion conditions in Saxis, it will allow the Town to market its need and the method of resolution of this need, to agencies and leaders with the resources to implement the Plan’s suggested actions. The shoreline management plan will provide the necessary level of shoreline stabilization while minimizing adverse impacts …
Florida Keys National Marine Sanctuary Water Quality Monitoring Project 1999 Annual Report, Ronald Jones, Joseph N. Boyer
Florida Keys National Marine Sanctuary Water Quality Monitoring Project 1999 Annual Report, Ronald Jones, Joseph N. Boyer
SERC Research Reports
No abstract provided.
An Integrated Surface Water Quality Monitoring Program For South Florida Coastal Waters, Ronald Jones, Joseph N. Boyer
An Integrated Surface Water Quality Monitoring Program For South Florida Coastal Waters, Ronald Jones, Joseph N. Boyer
SERC Research Reports
No abstract provided.
Long Term Trends In The Water Quality Of Florida Bay (June 1989-Dec. 1999), Joseph N. Boyer, Ronald Jones
Long Term Trends In The Water Quality Of Florida Bay (June 1989-Dec. 1999), Joseph N. Boyer, Ronald Jones
SERC Research Reports
No abstract provided.
Water Quality In East Pond: Factors Contributing To Algal Blooms And Strategies For Remediation, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Water Quality In East Pond: Factors Contributing To Algal Blooms And Strategies For Remediation, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: East and North Ponds (2011, 1999, 1996, 1991)
Human activity within the watershed can greatly accelerate the eutrophication process by increasing the rate at which nutrients such as phosphorus and nitrogen enter the lake (Fernandez et al. 1992). Increased nutrient loading causes dramatic increases in algal populations resulting in algal blooms. Many New England lakes develop a greenish tint because of algal blooms during early summer or early fall (Smith, 1992). Populations of bacteria which feed on organic material rise because of increased food supply. Bacterial activity decreases the level of dissolved oxygen in the lake (Henderson-Seller and Markland, 1987). This process has occurred in East Pond and …
Mass Flux Of Agricultural Nonpoint-Source Pollutants In A Conduit-Flow-Dominated Karst Aquifer, Logan County, Kentucky, James C. Currens
Mass Flux Of Agricultural Nonpoint-Source Pollutants In A Conduit-Flow-Dominated Karst Aquifer, Logan County, Kentucky, James C. Currens
Report of Investigations--KGS
Changes in water quality in a karst ground-water basin used intensively for agriculture are being measured before, during, and after the implementation of best management practices (BMP’s) and other management practices, to determine the success of such programs in protecting ground water. The study was divided into three phases. The results of the first two phases are included in this report and cover research conducted between August 1990 and October 1994. During phase I of the study the overall ground-water quality of the basin and its hydrogeology were investigated. Phase II began monitoring the water quality at Pleasant Grove Spring …
Available Resources Of The Fire Clay Coal In Part Of The Eastern Kentucky Coal Field, Stephen F. Greb, Gerald A. Weisenfluh, Robert E. Andrews, John K. Hiett, James C. Cobb, Richard E. Sergeant
Available Resources Of The Fire Clay Coal In Part Of The Eastern Kentucky Coal Field, Stephen F. Greb, Gerald A. Weisenfluh, Robert E. Andrews, John K. Hiett, James C. Cobb, Richard E. Sergeant
Report of Investigations--KGS
Available resources for the Fire Clay coal were calculated for a 15-quadrangle area in the Eastern Kentucky Coal Field. Original coal resources were estimated to be 1.8 billion tons (BT). Coal mined or lost in mining was estimated at 449 million tons (MT), leaving 1.3 BT of remaining Fire Clay resources in the study area. Of the remaining resources, 400 MT is restricted from mining, primarily because the coal is less than 28 in. thick, normally considered too thin to mine underground using present technology. The total coal available for mining in the study area is 911 MT, or 52 …
Effect Of Human Disturbance On Small Mammal Communities In Itasca State Park, Minnesota, Nancy L. Staus, Kathleen Conforti, Leslie N. Clapper, Jennifer A. Longhenry, C. C. Schoenbauer, Michael S. Rentz, John R. Tester
Effect Of Human Disturbance On Small Mammal Communities In Itasca State Park, Minnesota, Nancy L. Staus, Kathleen Conforti, Leslie N. Clapper, Jennifer A. Longhenry, C. C. Schoenbauer, Michael S. Rentz, John R. Tester
Journal of the Minnesota Academy of Science
We determined effects of different levels of human disturbance on small mammal richness and relative abundance from live-trapping data obtained in Itasca State Park in northwestern Minnesota. We developed a quantitative measure of human disturbance based on disturbance units and trapped small mammals on three study sites, each reflecting a different level of disturbance. Our data revealed that small mammal diversity decreased with increasing human disturbance. Amount of ground cover and litter depth also appeared to be important in explaining differences in the demographic patterns of small mammals among sites.
The Effects Of Urbanization And Human Disturbance Upon Plant Community Structure And Bird Species Richness, Diversity, And Abundance In A Natural Forested Area (Forest Park) In Portland, Oregon, Nancy Ellen Broshot
Dissertations and Theses
The effects of urbanization and continual human disturbance on the plant and avian communities of Forest Park and forested lands surrounding Portland, Oregon, were studied. I examined characteristics of plant and avian communities at 25 sites, 24 which were in Forest Park and surrounding areas and one which was in the Ancient Forest Preserve (old-growth stand) northwest of Forest Park. Data were analyzed using multiple regression, ANOV A, and Bonferonni/Dunn. Seven variables were selected representing different urbanization gradients. An additional covariable coded for the old-growth stand, allowing it to be used as a control.
Many tree variables, especially those related …
Salinity Action Plan : Wetland Vegetation Monitoring, 1998/1999, R. Gurner, G. Ogden, R. H. Froend
Salinity Action Plan : Wetland Vegetation Monitoring, 1998/1999, R. Gurner, G. Ogden, R. H. Froend
Research outputs pre 2011
This report represents the vegetation component of a project designed to provide on-going monitoring of wetland salinity and biological resources in wetlands of the agricultural zone of south-west Western Australia. Maintenance of wetland biological diversity in the agricultural zone is one of the major objectives of the Salinity Action Plan. Due to their low position in the landscape, wetlands are the habitat most affected by salinisation...
Infectious Disease And The Conservation Of Free-Ranging Large Carnivores, Dennis L. Murray, Cynthia A. Kapke, James F. Evermann, Todd K. Fuller
Infectious Disease And The Conservation Of Free-Ranging Large Carnivores, Dennis L. Murray, Cynthia A. Kapke, James F. Evermann, Todd K. Fuller
Environmental Conservation Faculty Publication Series
Large carnivores are of vital importance to the stability and integrity of most ecosystems, but recent declines in free-ranging populations have highlighted the potentially devastating effect of infectious diseases on their conservation. We reviewed the literature on infectious diseases of 34 large (maximum body mass of adults >20 kg) terrestrial carnivore species, 18 of which are considered to be threatened in the wild, and examined reports of antibody prevalence (seroprevalence) and cases of infection, mortality and population decline. Of 52 diseases examined, 44% were viral, 31% bacterial and the remainder were protozoal or fungal. Many infections were endemic in carnivores …
Managing Mountain Bike Impacts In The South West Of Western Australia : Combining Biophysical Impact Studies With Rider Preferences For Better Trail Design, Ute Goeft
Theses : Honours
This thesis examines the environmental impacts of mountain bikes on trails in the southwest of Western Australia and the preferences, perceptions, trail use and demographics of mountain bike riders in that region. This information is important for resource managers and trail developers to ensure that the trails that are provided and planned for mountain bike use in the region are environmentally appropriate and acceptable to users. The environmental impacts were examined through biophysical studies, which investigated soil loss, soil compaction and vegetation damage on and adjacent to mountain bike trails over a period of six months. A mountain bike racing …
Salinity And Hydrology Of The Fence Road Catchment : A Focus Catchment Of The Blackwood Basin, Ben Whitfield
Salinity And Hydrology Of The Fence Road Catchment : A Focus Catchment Of The Blackwood Basin, Ben Whitfield
Resource management technical reports
It is the clearing of native vegetation and replacement with lower water-use annual crops and pastures that is responsible for the developing salinity problem. Traditional farming practices have led to increased recharge to the groundwater systems resulting in increased storage and/or greater areas or rates of discharge. Groundwater monitoring has revealed variable rates of rise throughout the Fence Road catchment, from static to 0.6 metres per year, in a period of average to below average rainfall.
Agwest Revegetation Monitoring Activity: Evaluation 1999, Caroline Hatherly
Agwest Revegetation Monitoring Activity: Evaluation 1999, Caroline Hatherly
All other publications
During May 1999, an evaluation on the Agriculture Western Australia (AGWEST) Revegetation Monitoring Activity was undertaken. The evaluation was designed to track how the Land Conservation District Committees (LCDCs) in the Peel Harvey Catchment utilised the AGWEST Revegetation Monitoring Activity, and to determine if AGWEST's objectives of the project were being met It also gave the community a chance to provide feedback on their experiences with the Monitoring Activity, and suggest future changes
The survey concluded that the AGWEST Revegetation Monitoring Activity was used by LCDCs as a valuable tool for recording, monitoring and planning landcare projects. However, the process …
Native Vegetation Handbook For The Shire Of Northam, Sarah J. Weaving
Native Vegetation Handbook For The Shire Of Northam, Sarah J. Weaving
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Northam, including the existing and original vegetation, fauna and flora, drainage systems, topography and soils. Some of the problems relating to the management of these resources within the Shire and community initiatives to deal with these problems are also discussed. It is hoped that this information will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Toodyay, Sarah J. Weaving
Native Vegetation Handbook For The Shire Of Toodyay, Sarah J. Weaving
Native vegetation handbook series
The Handbook provides land managers with information relating to the natural resources of the Shire of Toodyay, including the original and existing vegetation, drainage systems and soils. Some of the problems relating to the management of these resources within the Shire and ideas and community initiatives to solve these problems are also discussed. It is hoped that this information will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the shire.