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Articles 20731 - 20760 of 25022
Full-Text Articles in Entire DC Network
Compensation Programs For Wildlife Damage In North America, Kimberly K. Wagner, Robert H. Schmidt, Michael R. Conover
Compensation Programs For Wildlife Damage In North America, Kimberly K. Wagner, Robert H. Schmidt, Michael R. Conover
United States Department of Agriculture Wildlife Services: Staff Publications
Financial compensation for damages caused by wildlife is an alternative to lethal wildlife damage management techniques, but little is known about the use of these programs in North America. We conducted surveys requesting information on wildlife species and type of damage covered by compensation programs, annual cost of programs, and the monitoring and assessment of program success to the wildlife agencies of all states and Canadian provinces. We also requested information on programs providing producers with damage-abatement materials instead of or in addition to financial compensation. All states and provinces responded to our survey. Nineteen states and 7 provinces had …
Indicator Bacteria Concentrations Of Two Northwest Arkansas Streams In Relation To Flow And Season, Dwayne R. Edwards, Mark S. Coyne, Tommy C. Daniel, P. F. Vendrell, J. F. Murdoch, P. A. Moore Jr.
Indicator Bacteria Concentrations Of Two Northwest Arkansas Streams In Relation To Flow And Season, Dwayne R. Edwards, Mark S. Coyne, Tommy C. Daniel, P. F. Vendrell, J. F. Murdoch, P. A. Moore Jr.
Biosystems and Agricultural Engineering Faculty Publications
Concentrations of indicator bacteria such as fecal coliform (FC) and fecal streptococcus (FS) are often used to assess the suitability of waters for their intended use(s) and to allocate resources for water quality improvement measures. There is evidence, however, that concentrations of FC and FS can be influenced by variables such as season and flow rate during sampling, which could lead to biased results. The objective of this study was to assess the impacts of season and flow rate on concentrations of FC and FS. Fecal indicator bacteria concentrations were measured for approximately three years at five sites on two …
The Treatment Of Vegetable Processing Waste Water Using A Pilot Scale Sequencing Batch Reactor Activated Sludge Process, Peter Hassett
The Treatment Of Vegetable Processing Waste Water Using A Pilot Scale Sequencing Batch Reactor Activated Sludge Process, Peter Hassett
Theses
The SBR process is a discontinuous, unsteady state process and has developed popularity in many countries assisted by reliable control technology for example programmable logic control. A typical SBR installation achieves equalisation, aeration and clarification of batches of wastewater on a timed sequence in one basin. This is in contrast to a volume sequenced process such as the conventional continuous stirred tank reactor where individual treatment objectives are met in separate basins. Advantages include, flexability, minimum energy input, consistent effluent quality and inhibition of filament organism growth by properly controlling substrate concentration and aeration sequences. Nitrification, denitrification and Bio-P removal …
Comparison Of The Aquatic Ecology Of Side-Canyons And The Main Channel Of Lake Powell 1997, Wayne A. Wurtsbaugh, Kirsten L. Gallo
Comparison Of The Aquatic Ecology Of Side-Canyons And The Main Channel Of Lake Powell 1997, Wayne A. Wurtsbaugh, Kirsten L. Gallo
Watershed Sciences Faculty Publications
Physical characteristics of lakes are highly interrelated with biological characteristics. We measured and analyzed the physical characteristics of two side canyons in order to better understand differences in productivity between side canyons and the main channel and to provide general information on the characteristics of the lake.
Vegetative Filter Strip Removal Of Metals In Runoff From Poultry Litter-Amended Fescuegrass Plots, Dwayne R. Edwards, P. A. Moore Jr., Tommy C. Daniel, Puneet Srivastava, D. J. Nichols
Vegetative Filter Strip Removal Of Metals In Runoff From Poultry Litter-Amended Fescuegrass Plots, Dwayne R. Edwards, P. A. Moore Jr., Tommy C. Daniel, Puneet Srivastava, D. J. Nichols
Biosystems and Agricultural Engineering Faculty Publications
Runoff from land areas amended with poultry (Gallus gallus domesticus) manure can contain elevated concentrations of metals such as Cu, Fe, and Zn. Vegetative filter strips (VFS) can reduce runoff concentrations of animal manure components, but reported studies have typically focused on nutrients and solids rather than metals. This experiment assessed the impact of VFS length (0 to 12 m) on concentrations and mass losses of Cu, Fe, K, Na, Ni, and Zn in runoff from fescuegrass (Festuca arundinacea Schreb.) plots (1.5 m wide × 6 and 12 m long) treated with poultry litter. The runoff was produced from simulated …
Effect Of Red Imported Fire Ant Envenomization On Neonatal American Alligators, Craig R. Allen, Kenneth G. Rice, Daniel P. Wojcik, H. Franklin Percival
Effect Of Red Imported Fire Ant Envenomization On Neonatal American Alligators, Craig R. Allen, Kenneth G. Rice, Daniel P. Wojcik, H. Franklin Percival
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Alligator populations in the southeastern United States have substantially recovered since the late 1960s when they were placed on the federal Endangered Species List (Joanen and McNease, 1987). In Florida, both early age class and adult animals currently are harvested for commercial and recreational purposes (Hines and Abercrombie, 1987). In addition, the alligator is ecologically important as a keystone species and as an indicator of wetland health (Mazzotti and Brandt, 1994). Recently, the nonnative ant Solenopsis invicta (the red imported fire ant) has surfaced as a potential threat to alligator populations. Solenopsis invicta is a relatively new (approx. 65 yr) …
A Field Method For Quantifying Ammonium Picrate And Picric Acid In Soil, Philip G. Throne, Thomas F. Jenkins
A Field Method For Quantifying Ammonium Picrate And Picric Acid In Soil, Philip G. Throne, Thomas F. Jenkins
United States Army: Publications
A simple field method for the determination of ammonium picrate and picric acid in soil was developed. Picric acid is a strong acid with a pKa 5 0.80, and is colorless when dissolved in an organic solvent, whereas its anion ( picrate) is bright yellow. Picric acid and picrate ions were extracted from undried soil by shaking with acetone; any picric acid extracted was rapidly converted to picrate in the wet acetone. Picrate was extracted from the acetone soil extracts by passing the solutions through a solid-phase anion exchanger to remove interferences. Acidified acetone was used to convert the picrate …
Utilisation Of Wild Gramineous Plants For Management Of Cereal Stemborers In Africa, Z. R. Khan, P. Chiliswa, K. Ampong-Nyarko, L. E. Smart, A. Polaszek, J. Wandera, M. A. Mulaa
Utilisation Of Wild Gramineous Plants For Management Of Cereal Stemborers In Africa, Z. R. Khan, P. Chiliswa, K. Ampong-Nyarko, L. E. Smart, A. Polaszek, J. Wandera, M. A. Mulaa
All Peer-Reviewed Publications
Field trials in Kenya demonstrated that the forage grass, Sorghum vulgäre sudanense (Sudan grass) attracted greater oviposition by stemborers than cultivated maize, resulting in significant increase in maize yield. On the other hand, the non-host forage plant, Melinis minutiflora (molasses grass), when inter-cropped with maize, repelled gravid stemborer females from ovipositing on maize, resulting in significant reduction in stemborer infestation. Using these trap- and repellent gramineous plants, a novel pest management approach based on a 'push-pull' or stimulo-deterrent diversionary strategy is being developed where stemborers are repelled from the food crop and are simultaneously attracted to a discard or trap …
Restoration Of An Urban Salt Marsh: An Interdisciplinary Approach, David G. Casagrande
Restoration Of An Urban Salt Marsh: An Interdisciplinary Approach, David G. Casagrande
Yale School of the Environment Bulletin Series
No abstract provided.
Brownfield Redevelopment Strategies For Elkhart, In: Technical Advisory Report On Financial, Marketing, & Economic Development Strategies, Kirstin Toth, Paul Christensen
Brownfield Redevelopment Strategies For Elkhart, In: Technical Advisory Report On Financial, Marketing, & Economic Development Strategies, Kirstin Toth, Paul Christensen
All Maxine Goodman Levin School of Urban Affairs Publications
No abstract provided.
Sagebrush (Artemisia Tridentata) Restoration In Altered Sage Grouse (Centrocercus Urophasianus) Habitat Of The Yakima Training Center In Central Washington, Margaret Ann Pounds
Sagebrush (Artemisia Tridentata) Restoration In Altered Sage Grouse (Centrocercus Urophasianus) Habitat Of The Yakima Training Center In Central Washington, Margaret Ann Pounds
All Master's Theses
The restoration of sagebrush at the Yakima Training Center was studied because it was determined that military training was altering the condition of sage grouse habitat, potentially having a negative impact on the sage grouse population of the installation. The management of sage grouse and its habitat on YTC are a priority for the U.S. Army. The objectives of this study were to identify the issues relevant to sage grouse and the restoration of its habitat on the training facility, to investigate sagebrush restoration techniques, and to make management recommendations based upon this study. Results of this study indicate that …
Bridges To Sustainability: Business And Government Working Together For A Better Environment, Luis Gomez-Echeverri
Bridges To Sustainability: Business And Government Working Together For A Better Environment, Luis Gomez-Echeverri
Yale School of the Environment Bulletin Series
No abstract provided.
Focus Catchments : A New Approach To Salinity Research : National Dryland Salinity Program, Steve Porritt
Focus Catchments : A New Approach To Salinity Research : National Dryland Salinity Program, Steve Porritt
Journal of the Department of Agriculture, Western Australia, Series 4
Dry/and salinity is a major threat to the resource base of many rural industries around Australia. More than 1.8 million hectares of once productive land are affected by salinity, with a further 1.6 million hectares at risk in the next 15 to 25 years in Western Australia alone. Much of the past Commonwealth and State expenditure on salinity programs and activities has been poorly targeted and coordinated. In view of this, a national dry/and salinity program that supports specific State salinity management programs has been established jointly between the Commonwealth and State government agencies.
The Upper Kent River Catchment is …
Table Of Contents Volume Eight, Number One, Winter 1997, Risk Editorial Board
Table Of Contents Volume Eight, Number One, Winter 1997, Risk Editorial Board
RISK: Health, Safety & Environment (1990-2002)
Table of contents for the journal RISK: Health, Safety & Environment (ISSN: 1073-8673)
Academy Recommendations On The Proposed Yucca Mountain Waste Repository: Overview And Criticisms, Kristin S. Shrader-Frechette
Academy Recommendations On The Proposed Yucca Mountain Waste Repository: Overview And Criticisms, Kristin S. Shrader-Frechette
RISK: Health, Safety & Environment (1990-2002)
Offers alternative criticism of the NAS report.
Evaluation Of Siting Strategies: The Case Of Two Uk Waste Tire Incinerators, Ragnar E. Lofstedt
Evaluation Of Siting Strategies: The Case Of Two Uk Waste Tire Incinerators, Ragnar E. Lofstedt
RISK: Health, Safety & Environment (1990-2002)
Examines the circumstances that may have contributed to differing outcomes with respect to siting similar facilities in the UK.
Book Review Of Amer Ei-Ahraf & William V. Willis, Management Of Animal Waste - Environmental Health Problems And Technological Solutions, Penny Dean
RISK: Health, Safety & Environment (1990-2002)
Review of Amer El-Ahraf & William V. Willis, Management of Animal Waste - Environmental Health Problems and Technological Solutions (Praeger Publishers 1996). About the authors, bibliography, index, introduction, tables. LC 95-654; ISBN 0-275-93529-9 [185 pp. Cloth $65.00. 88 Post Road West, Westport CT 06881.]
Response Surface Methodology: An Analytical Method For Locating Migrated Contaminant Sources, Orlando J. Dona Jr.
Response Surface Methodology: An Analytical Method For Locating Migrated Contaminant Sources, Orlando J. Dona Jr.
Theses and Dissertations
The use and storage of hazardous chemicals at U.S. military facilities often adversely affect the groundwater when contaminants infiltrate the subsurface as a result of leaks and accidental spills. These contaminants, if not located and remediated in a relatively short time, may move and settle unpredictably, essentially creating a source some distance from the original leak or spill. An example of this phenomenon is found with migrating dense nonaqueous phase liquid (DNAPL) contaminants. Although various methods for estimating the present day locations of these migrated contaminants are in use, accurately pinpointing the source of contaminants remains a difficult problem in …
Solid-Phase Extraction Method For The Quantitative Analysis Of Organochlorine Pesticides In Wildlife Urine, E. E. Petty, J . J . Johnston, S.A. Volz
Solid-Phase Extraction Method For The Quantitative Analysis Of Organochlorine Pesticides In Wildlife Urine, E. E. Petty, J . J . Johnston, S.A. Volz
United States Department of Agriculture Wildlife Services: Staff Publications
A gas chromatographic method for the analysis of nine organochlorine pesticides in wildlife urine is described. Reversedphase solid-phase extraction is utilized to extract the organochlorine pesticides from urine. The pesticides are recovered by elution with hexane-ethyl ether (1:1) and quantified by gas chromatography with electron-capture detection. Method detection limits range from 1.4 to 2.7 μg/L. Mean recoveries for all pesticides are 90.6%.
An Assessment Of The Prevalence Of Trichomonas Sp. In The Domestic Pigeon (Columba Livia) Population, In The Emirates Of Abu Dhabi And Dubai, Theresa Caroline Bailey
An Assessment Of The Prevalence Of Trichomonas Sp. In The Domestic Pigeon (Columba Livia) Population, In The Emirates Of Abu Dhabi And Dubai, Theresa Caroline Bailey
Theses
A survey of 250 captive (animal market) and free-flying (trapped at a sheep farm) pigeons was conducted to assess the prevalence of Trichomonas sp. in the domestic pigeon (Columba livia) population, in the United Arab Emirates (UAE). Oropharyngeal swabs demonstrated that 52% of all pigeons were found with Trichomonas sp. in their oropharynx, of which 60%, 68% and 35% of pigeons were Trichomonas sp. positive in the AI Ain and Abu Dhabi animal markets and AI Ain sheep farm respectively. Captive birds had a significantly higher infection rate than the free-flying pigeons. Inspection of the oropharynx of live pigeons positive …
Evaluation Of The Effects Of Afff Inputs On The Vip Biological Nutrient Removal Process And Pass-Through Toxicity. Phase 1a. Volume Ii. Appendix Vii. Acute Toxicity Test Results, Mujde Erten-Unal, Gary C. Schafran
Evaluation Of The Effects Of Afff Inputs On The Vip Biological Nutrient Removal Process And Pass-Through Toxicity. Phase 1a. Volume Ii. Appendix Vii. Acute Toxicity Test Results, Mujde Erten-Unal, Gary C. Schafran
Civil & Environmental Engineering Faculty Publications
This report discusses the results of a bench scale study conducted to evaluate the potential inhibitory effects of untreated AFFF wastewater to the Virginia Initiative Plant VIP biological nutrient removal process. A bench-scale study was conducted to evaluate the potential inhibitory effects of untreated AFFF wastewater to the nitrification process of the Virginia Initiative Plant biological nutrient removal system. Under this testing, bench-scale reactors simulating the nitrification process were loaded at various AFFF concentrations and the influence on the process performance was evaluated. The purpose of this effort was to determine the level of AFFF that could be incorporated into …
Small Mammals Of Point Pelee National Park: Protecting Biodiversity In Small Reserves (Ontario), Julie Ann Spicer
Small Mammals Of Point Pelee National Park: Protecting Biodiversity In Small Reserves (Ontario), Julie Ann Spicer
Theses and Dissertations (Comprehensive)
Habitat destruction, fragmentation and degradation have been widespread throughout southern Ontario with devastating effects on wetlands. Small reserves are all that in this highly agricultural/urban landscape to protect the biodiversity of Great Lakes Marsh and Carolinian Forest ecosystems. Small reserves are vulnerable to species loss through a host of problems related to size and as a result, the value of small reserves to conservation strategies has often been questioned. Indicator species can be used as a means of studying the conditions of complex ecosystems. In this research, small mammals were sampled in the wetlands of Point Pelee National Park as …
Effect Of Oil Pollution On Juvenile And Adult Rabbitfish (Siganus Canaliculatus), Mohammed Abdul Rahim Hassan Al Zarouni
Effect Of Oil Pollution On Juvenile And Adult Rabbitfish (Siganus Canaliculatus), Mohammed Abdul Rahim Hassan Al Zarouni
Theses
The possible toxic effect of crude oil and dispersant on the reproduction and performance of common marine fish in the United Arab Emirates coasts were investigated. Adult female and juvenile rabbitfish (Siganus canaliculatus) were exposed to different concentration of Sharjah light crude oil (0, 4, 6 ml crude oil/l) in the presence or absence of 0.3 mI/l Nalfleet dispersant (Maxi-Clean 2) dissolved in sea water. Juvenile fish were exposed to treatments for 3, 6, 9 or 15 days and adult female were treated for 18 days. At the end of each experimental period histopathological changes in the skin, gills, liver …
Coastal Zone Monitoring And Evaluation : A Descriptive Analysis Of Western Australian Practices, Michael F. Williams
Coastal Zone Monitoring And Evaluation : A Descriptive Analysis Of Western Australian Practices, Michael F. Williams
Theses : Honours
Currently there is no information available which documents the monitoring and evaluation practices undertaken in the coastal zone of Western Aust1alia by coastal zone managers. A review of current Australian-wide management practices in coastal management reveals that monitoring and evaluation are limited in their application. The adequacy of the links between coastal monitoring and evaluation, on which our understanding of the state of the coastal zone environment is based, is one of two central themes throughout this research. The other theme is that without an accurate, reliable and effectively managed monitoring and research information base, coastal management will be haphazard …
Scope Of Justice, Delegitimisation, Sentience And Ecosystemic Integrity As Predictors Of Protection, Rob Gulley
Scope Of Justice, Delegitimisation, Sentience And Ecosystemic Integrity As Predictors Of Protection, Rob Gulley
Theses : Honours
It is argued that the continuing environmental destruction results from an instrumental valuation of the non-human world. Fox's (1995) alternative intrinsic value approach to environmental protection is introduced. Two aspects of Fox's descriptive model may represent fundamental motives, or ethical bases, for behaviour. They are sentience -the quality of being capable of experiencing pain, and ecosystemic-integrity -the quality of contributing to the self-regenerating capacity of an ecosystem. The inconsistency between the presumed ethical bases for behaviour, and actual behaviour is noted. It is suggested that delegitimisation- the discounting of some desirable quality in a competitor during conflict, and the scope …
Evaluation Of Groundwater Quality In Shallow Aquifers Under Cultivated Lands At Al Oha Area, United Arab Emirates, Waleed Nasser Ahmed Bin Braik
Evaluation Of Groundwater Quality In Shallow Aquifers Under Cultivated Lands At Al Oha Area, United Arab Emirates, Waleed Nasser Ahmed Bin Braik
Theses
To assess the impact of application of chemical fertilizers in agriculture on the Quaternary aquifer at AI Oha area, United Arab Emirates, 76 groundwater samples were collected during February 1995 - March 1996. Samples were analyzed for major, minor and trace chemical constituents in the Food Control Laboratory, Abu Dhabi.
The Total Dissolved Solids (TDS) of collected samples varied between 500 milligrams per liter (mg/l) in the east and 3,500 mg/l in the west. Except for bicarbonate ion (HC03-), concentration of major cations (Ca2+, Mg2+, Na+ and K+) and anions (CO32- …
An Examination Of Environmental Sensitivity Among Supporters Of An Outdoor Recreation Area, Rodney James Blackman
An Examination Of Environmental Sensitivity Among Supporters Of An Outdoor Recreation Area, Rodney James Blackman
Dissertations and Theses @ UNI
The environment as an issue has been prominently before the public for over three decades. Yet the question of how much people know about the natural environment and how committed they are to the environment has seldom been considered in research literature. Research of this nature is needed because without it individuals interested in the preservation and conservation of the environment cannot be sure how their efforts to increase people's environmental sensitivity should be applied. The purpose of this study was to examine the level and extent of environmental sensitivity among supporters of an outdoor recreation area/facility in northeast Iowa. …
Restoring The Waters, Kathryn M. Mutz, Betsy Rieke, University Of Colorado Boulder. Natural Resources Law Center
Restoring The Waters, Kathryn M. Mutz, Betsy Rieke, University Of Colorado Boulder. Natural Resources Law Center
Books, Reports, and Studies
64 p. : ill. (some col.) ; 28 cm
WATER RIGHTS TRANSFERS FOR INSTREAM FLOWS: Oregon Water Trust / Janet Neuman -- Trust water rights program, Washington / Janet Neuman -- Boulder Creek, Colorado / Carol Ellinghouse, Kathryn Mutz -- Lahontan Valley Wetlands, Nevada / David Yardas -- Conclusion : Challenges for water rights transfers -- PROTECTING AND RESTORING THE WATERS: Umatilla River Basin project, Oregon / Becky Hiers, Jim Cole, Jim Esget, Kathryn Mutz -- Trinity River Basin, California / Michelle Leighton Schwartz, Gregory Thomas -- Ash Meadows, Nevada / David Ledig, Kathryn Mutz -- Colorado River : Grand …
Overview Of Tunisia's Marine Environment In Support Of Administrative Policies And Programmes, Fredj Derouiche
Overview Of Tunisia's Marine Environment In Support Of Administrative Policies And Programmes, Fredj Derouiche
World Maritime University Dissertations
The dissertation is a real investigation in the marine environment field, which few people are familiar with, although it concerns everybody. The investigation being carried out in three steps; each step covering one aspect of the marine environment, and the result is given in the conclusion. As a first step, the main problems affecting the marine environment in Tunisia, are identified and analysed. An attempt is made to identify the impact of such problems on the marine environment, human health and the national economy. In the second part, the institutional framework, dealing with the marine environment, is presented and analysed. …
Ventilation Rates For Carassius Auratus During Changes In Dissolved Oxygen, Collin Nolan
Ventilation Rates For Carassius Auratus During Changes In Dissolved Oxygen, Collin Nolan
UNLV Theses, Dissertations, Professional Papers, and Capstones
This experiment was designed to determine whether dissolved oxygen concentrations would influence the ventilation rate of goldfish, Carassius auratus. Ventilation rate can be determined by counting opercular movements. Opercular movements of the same five goldfish were counted at three different levels of dissolved oxygen to determine whether there were differences in ventilation rates. Average ventilation rates were established for each of the three levels of dissolved oxygen and compared statistically. There were significant differences in the ventilation rates averages at each of the three levels. Carassius auratus will exhibit changes in ventilation rates when dissolved oxygen levels change.