Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Environmental Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 10951 - 10980 of 12765

Full-Text Articles in Entire DC Network

Fresh Water To Arabia By Vlcc-Fact Or Folly?, Joseph P. Power Jan 1994

Fresh Water To Arabia By Vlcc-Fact Or Folly?, Joseph P. Power

Marine Affairs Theses and Major Papers

Population growth, industrial development and the esoteric goals of national self-sufficiency in water and food propels the arid nations of Arabia in a voracious scavenge for alternative resources of fresh water as depletion and contamination of the natural aquifers have reached critical proportions. Desalination of sea water is currently the preferred alternative source of fresh water. Recent misgivings concerning the antroprogenic discharge of desalination effluent (i.e. high temperature and high saline water) into the semi-enclosed, epicontinental waters of the Arabian Gulf question the sustainability of this process. Demonstrable deleterious affects of such a process on the marine ecosystem of the …


Exploring The Islands: An Educator's Manual For Teaching Primary Students About The Channel Islands, Debra Jean Everton Jan 1994

Exploring The Islands: An Educator's Manual For Teaching Primary Students About The Channel Islands, Debra Jean Everton

Theses Digitization Project

No abstract provided.


Land Use Patterns In Relation To Lake Water Quality In The Long Pond, North Basin Watershed, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College Jan 1994

Land Use Patterns In Relation To Lake Water Quality In The Long Pond, North Basin Watershed, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College

Colby College Watershed Study: Long Pond, North (2006, 1994)

Long Pond has been used recreationally over time for boating, fishing and swimming. Additional uses include drinking water and various types of waste disposal. In past winters, sawdust from lumber mills has been placed on the ice that covers the north basin of Long Pond (Ed Mayer pers. comm.). This may raise total phosphorus levels at depth and could lead to problems in the future. Activities which raise organic sediments input into the lake should be avoided.

A major purpose of our study was to analyze the present water quality of Long Pond, North Basin, including the biotic and abiotic …


Blackbirds, Richard A. Dolbeer Jan 1994

Blackbirds, Richard A. Dolbeer

Prevention and Control of Wildlife Damage Handbook

The term blackbird loosely refers to a diverse group of about 10 species of North American birds that belong to the subfamily Icterinae. Identification, range, habitat, food habits, general biology, and damage to crops of Red-winged Blackbirds (Agelaius phoeniceus), Common Grackles (Quiscalus quiscula), Great-tailed Grackles (Q. mexicanus), Brown-headed Cowbirds (Molothrus ater), Yellow-headed Blackbirds (Xanthocephalus xanthocephalus), Brewer’s Blackbirds (Euphagus cyanocephalus), and Rusty Blackbirds (E. carolinus).


Preface And Table Of Contents Jan 1994

Preface And Table Of Contents

Prevention and Control of Wildlife Damage Handbook

This handbook is a comprehensive reference of North American vertebrate species that can cause economic damage to resources or become a nuisance at various times and places. It is intended for use by extension agents and specialists, wildlife biologists, animal control officers, public health personnel, pest control operators, teachers and students of wildlife biology, and others who deal with wildlife damage problems.

Wildlife damage management is an essential part of contemporary wildlife management. During the past decade there has been significant research and development in this field. This publication is a condensation of current, research-based information on wildlife that cause …


Pigeons (Rock Doves), David E. Williams, Robert M. Corrigan Jan 1994

Pigeons (Rock Doves), David E. Williams, Robert M. Corrigan

Prevention and Control of Wildlife Damage Handbook

Pigeons (Columbia livia) typically have a gray body with a whitish rump, two black bars on the secondary wing feathers, a broad black band on the tail, and red feet. Pigeons are found throughout the United States (including Hawaii), southern Canada, and Mexico. Pigeons are highly dependent on humans to provide them with food and sites for roosting, loafing, and nesting. Pigeons are primarily grain and seed eaters and will subsist on spilled or improperly stored grain. The common pigeon was introduced into the United States as a domesticated bird, but many escaped and formed feral populations. Pigeon …


Prestressed Concrete Pipe Failure Jordan Aqueduct, Reach 3, United States Bureau Of Reclamation Jan 1994

Prestressed Concrete Pipe Failure Jordan Aqueduct, Reach 3, United States Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

The Bureau of Reclamation conducted failure investigations to identify the cause(s) of a catastrophic rupture of prestressed concrete pipe under impressed current cathodic protection, which occurred on Reach 3 of the Jordan Aqueduct near Salt Lake City, Utah, on August 7, 1984. The multidisciplinary analyses included corrosion, design, petrographic, structural, and metallurgical investigations. From the onset of the failure, the issue was one of reconciling cathodic overprotection and defective (longitudinally cracked) prestressing wire. The report contains a summary of the findings from Reclamation investigations.


Ground Water Monitoring Project For Arkansas, Phase Iii, Kenneth F. Steele, Steven S. Hill, Terry W. Nichols, H. Don Scott, Paul Vendrell, H. S. Lin Jan 1994

Ground Water Monitoring Project For Arkansas, Phase Iii, Kenneth F. Steele, Steven S. Hill, Terry W. Nichols, H. Don Scott, Paul Vendrell, H. S. Lin

Arkansas Water Resources Center Technical Reports

This report is composed of two parts. The first part is an interpretation of the pesticide and nitrate data collected in Woodruff County based on samples collected during 1994. Because there is an indication that there were hydrological differences between 1994 and 1995, and because most of the pesticide data is from 1994, this interpretive portion is restricted to 1994 data. Six wells initially sampled in 1994 that contained pesticides had continuing contamination in re-sampling in 1994 and 1995. Part II lists a seventh well in Woodruff County that contained pesticides in February and May of 1995


Land Resources Of The Northam Region, Neil Clifton Lantzke, I Fulton Jan 1994

Land Resources Of The Northam Region, Neil Clifton Lantzke, I Fulton

Land resources series

This report presents soil and landform mapping of about one million hectares in the Avon Valley and central wheatbelt of Western Australia at scale of 1:100,000. The study area spans from the lateritic plateau of the Darling Range to the broad, flat landscape of the wheatbelt and covers four broad physiographic regions: • the Zone of Ancient Drainage; • the Zone of Rejuvenated Drainage; • the West Kokeby Zone; and • the Darling Range Zone. Twenty-five soil landscape units were identified and mapped on the accompanying map sheets. A soil landscape unit is an area of land that occurs in …


Lake Education Project: An Environmental Program For Lake Elsinore Students, W. Arthur Mcmahon Jan 1994

Lake Education Project: An Environmental Program For Lake Elsinore Students, W. Arthur Mcmahon

Theses Digitization Project

No abstract provided.


Nursery Pest Management Final Environmental Impact Statement, United States Forest Service Jan 1994

Nursery Pest Management Final Environmental Impact Statement, United States Forest Service

Final Environmental Impact Statements (ID)

The Forest Service, in compliance with the National Environmental Policy Act of 1969, is presenting three alternative ways of managing pests (weeds, diseases, insects, and animals) at the Lucky Peak Nursery in the Intermountain Region.


Uinta National Forest, Rangeland Ecosystem Forest Plan Amendment, Final Environmental Impact Statement, United States Forest Service Jan 1994

Uinta National Forest, Rangeland Ecosystem Forest Plan Amendment, Final Environmental Impact Statement, United States Forest Service

Final environmental Impact Statements (UT)

This Final Environmental Impact Statement describes alternatives, including a "No Action" alternative for management of National Forest Rangeland Resources on the Uinta National Forest. Alternatives range from no change from past management practices, which in some instances have resulted in less than favorable ecological conditions on National Forest Rangelands and riparian resources, to managing these resources to achieve the "Potential Natural Community" in terms of vegetative cover types and condition. The environmental consequences of all alternatives considered in detail are displayed. The alternative selected for implementation will become an amendment to the Uinta National Forest Land and Resource Management Plan. …


Careful Clip Preparation Will Increase Profit, Peter Metcalfe, Ric Collins Jan 1994

Careful Clip Preparation Will Increase Profit, Peter Metcalfe, Ric Collins

Journal of the Department of Agriculture, Western Australia, Series 4

The current wool market has forced wool growers into producing the maximum number of kilograms of quality wool for the least cost. Preparation of the clip is now much more important to maximise possible net returns. Careful clip preparation will ensure that growers receive the maximum overall average price for each kilogram of wool in the clip.


Diamond Mountain Resource Area Resource Management Plan And Record Of Decision, United States Bureau Of Land Management Jan 1994

Diamond Mountain Resource Area Resource Management Plan And Record Of Decision, United States Bureau Of Land Management

All U.S. Government Documents (Utah Regional Depository)

The Diamond Mountain Resource Management Plan is approved. The plan was prepared under the regulations for implementing the Federal Land Policy and Management Act (FLPMA) of 1976 (43 CFR 1600). An environmental impact statement was prepared for this plan in compliance with the National Environmental Policy Act (NEPA) of 1969. The plan is identical/nearly idential to the one set forth in the proposed plan and associated final environmental impact statement published in August 1993. Specific areawide management decisions are presented in Chapter 2 of the RMP.


Savant Sage Record Of Decision, United States Forest Service Jan 1994

Savant Sage Record Of Decision, United States Forest Service

All U.S. Government Documents (Utah Regional Depository)

The 7,500-acre Savant Sage Resource Area forms a mountainous backdrop and prominent landscape for the communities of Athol, Belmont and the surrounding areas. The majority of the area was burned by the fires of the late 1800's, and there has been little timber resource management since. During early scoping activities, the public expressed concern for personal use of water resources in the area; the importance of visual resources to both local residents and seasonal visitors to the area; the forest health of the area; and the complexity of the area as a whole.


Extension And Education Materials For Sustainable Agriculture, Volume 1, Charles A. Francis, Jim King Jan 1994

Extension And Education Materials For Sustainable Agriculture, Volume 1, Charles A. Francis, Jim King

CARI Extension and Education Materials for Sustainable Agriculture

Extension and Education Materials for Sustainable Agriculture

Future Harvest Teaching Manual

A Teacher's Guide to Cropping System Design

A Guide to Nitrogen Optimization

Preventative Weed Management

Integrated Soil Fertility Management

The Economics of Sustainable Agriculture

A Guide for Lease Structures and Landlord-Tenant Agreements for Converting to More Sustainable Agriculture

The Green Revolution Simulation

The Use of Decision Cases in Agricultural Education and Research

Teaching with Cases

Sustainable Systems for the Future: The Nebraska Program

Integration of Environmental and Sustainable Development in Extension: Case Study from Nebraska, USA

Agricultural Producers and Environmentalists: What are Common Goals?

Designing the Future Farmscape

Sustainable …


Bird Damage At Aquaculture Facilities, W. Paul Gorenzel, Fred S. Conte, Terrell P. Salmon Jan 1994

Bird Damage At Aquaculture Facilities, W. Paul Gorenzel, Fred S. Conte, Terrell P. Salmon

Prevention and Control of Wildlife Damage Handbook

Reduction of the damage caused by fish-eating birds requires accurate bird identification and some knowledge of avian biology and habits. The open-water areas and large concentrations of aquatic livestock at aquaculture facilities are natural attractants to many birds. Birds can have a significant economic impact on the culture of aquatic products including fish, shellfish, crustaceans, and other invertebrates. For our purpose here, we will refer to these birds as fish-eating birds, and the aquatic products as fish.


Environmental Attitudes And Knowledge: An International Comparison Among Business Students, Raymond Benton Jr., G. Ray Funkhouser Jan 1994

Environmental Attitudes And Knowledge: An International Comparison Among Business Students, Raymond Benton Jr., G. Ray Funkhouser

School of Business: Faculty Publications and Other Works

This article investigates international differences in environmental knowledge and attitudes among business administration students. The Environmental Knowledge and Attitude Scale, developed by Maloney, Ward, and Braucht (1975) and used by Synodinos (1990), was administered to 85 upperdivision business administration students at Loyola University Chicago and 111 upperdivision business students at the National University of Singapore. No significant differences were found between the two samples on the Knowledge, Concern, or Willingness to Act subscales. The United States students' higher mean score on the Actual Behavior subscale was significant but may only reflect relative possibilities for participation in environmental activities. Overall, the …


Speciation Of Heteroatoms In Coal By Sulfur- And Nitrogen-Selective Techniquestrogen-Selective Techniques, Stephen R. Palmer, Michael A. Kruge, Edwin J. Hippo, John C. Crelling Jan 1994

Speciation Of Heteroatoms In Coal By Sulfur- And Nitrogen-Selective Techniquestrogen-Selective Techniques, Stephen R. Palmer, Michael A. Kruge, Edwin J. Hippo, John C. Crelling

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

The peroxyacetic acid oxidation products from a series of coals of organic sulfur content 0.5-9.8 wt% were examined. The distributions of organic S and N compounds were determined by gas chromatography with sulfur-selective flame photometric and nitrogen-selective thermionic specific detection respectively. A selected sample was also examined in greater detail using low-voltage high-resolution mass spectrometry. The distribution of organic sulfur compounds in the oxidation products was remarkably similar for all the coals. The number of sulfur compounds detected was small compared with that of organic nitrogen compounds detected. This suggests that the sulfur chemistry of coal is considerably simpler than …


Application Of Time Series Models To Sets Of Environmental Data, Saarah Ahmed Farag Jan 1994

Application Of Time Series Models To Sets Of Environmental Data, Saarah Ahmed Farag

Theses : Honours

In environmental studies, many programs have been implemented for the purpose of examining the influence of factors on the natural environment from various sources. In the past, predictions have been obtained from a simple regression model of the data from these programs to aid in deciding whether an intervention is required in the program or policy. However, most environmental time series involve correlated dependent variables which makes it difficult to apply conventional regression analysis. This thesis compares the application of the class of transfer function models, where high correlation between dependent variables is allowed, to that of conventional regression analysis. …


Canadian Cooperative Wildlife Health Centre, Volume 3-1, Winter 1994/1995 Jan 1994

Canadian Cooperative Wildlife Health Centre, Volume 3-1, Winter 1994/1995

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

Ecology of Waterfowl Botulism
Responses to the Questionnaire to Readers
Mycoplasma gallisepticum in House Finches in the Eastern United States
Unusual observations of harp and hooded seals
Morbillivirus infection (canine distemper) in a bobcat
Cerebral nematodiasis in a bobcat
Stranding of two bottlenose whales in the St. Lawrence estuary
Prevalence of parasitic cataracts in St. Lawrence River fish
Rupture of a dissecting aneurysm of the pulmonary trunk in a beluga whale from the St. Lawrence Estuary
Tularemia in beavers
Ring-billed gulls - False Duck Island
Lead poisoning in loons
Salmonella and Campylobacter in gulls
Other observations
Mortality patterns in orphaned …


River Otters (Lutra Canadensis), Edward P. Hill Jan 1994

River Otters (Lutra Canadensis), Edward P. Hill

Prevention and Control of Wildlife Damage Handbook

River otters (Lutra canadensis) are best known for their continuous and playful behavior, their aesthetic value, and the value of their durable, high-quality fur. River otters occur throughout North America except the arctic slopes, the arid portions of the Southwest, and the intensive agricultural and industrialized areas of the midwestern United States. The diet of the river otter throughout its range is primarily fish. The reproductive biology of river otters and all other weasels is complex because of a characteristic known as delayed implantation. The presence of river otter(s) around or in a fish hatchery, aquaculture, or fish …


Bats (Myotis Lucifugus), Arthur M. Greenhall, Stephen C. Frantz Jan 1994

Bats (Myotis Lucifugus), Arthur M. Greenhall, Stephen C. Frantz

Prevention and Control of Wildlife Damage Handbook

Despite their ecological value, bats (Myotis lucifugus) are relentlessly and unjustifiably persecuted. Bats, the only mammals that truly fly, belong to the order Chiroptera. Bats in North America are virtually all insectivorous, feeding on a variety of flying insects (exceptions among house bats were noted previously). Most North American bats emit high frequency sounds (ultrasound) inaudible to humans and similar to sonar, in order to avoid obstacles, locate and capture insect prey, and to communicate. Bats often fly about swimming pools, from which they drink or catch insects. Bats use roosting niches that are indoors (human dwellings, outbuildings, …


Cottontail Rabbits, Scott R. Craven Jan 1994

Cottontail Rabbits, Scott R. Craven

Prevention and Control of Wildlife Damage Handbook

Rabbits (Sylvilagus floridanus) usually can be accepted as interesting additions to the backyard or rural landscape if control techniques are applied correctly. Under some unusual circumstances, control of damage may be difficult. There are 13 species of cottontail rabbits (genus Sylvilagus), nine of which are found in various sections of North America north of Mexico. The eastern cottontail’s range includes the entire United States east of the Rocky Mountains and introductions further west. Cottontails do not distribute themselves evenly across the landscape. Rabbits live only 12 to 15 months, and probably only one rabbit in 100 lives …


Gulls, Victor E. F. Solman Jan 1994

Gulls, Victor E. F. Solman

Prevention and Control of Wildlife Damage Handbook

The term gull refers to members of a group of 23 North American bird species that belong to the family Laridae, subfamily Larinae. The herring (Larus argentatus) and ringbilled (L. delawarensis) gulls are the most common and widespread of the species. Most gulls nest in colonies on sand and gravel-covered shorelines and islands. Gulls feed on land or water on aquatic animals, terrestrial invertebrates and small vertebrates, plant remains, carrion, and refuse. Increasing gull populations in North America during the past century have led to a variety of problems for different segments of society.


A Preliminary Study Of The Potential For Recycling And Waste Minimisation At Edith Cowan University: Report To The Edith Cowan University Student Guild, Eddie Van Etten, Mark Lund, Robert Troeth Jan 1994

A Preliminary Study Of The Potential For Recycling And Waste Minimisation At Edith Cowan University: Report To The Edith Cowan University Student Guild, Eddie Van Etten, Mark Lund, Robert Troeth

Research outputs pre 2011

In recent years there has been a growing realisation worldwide that disposing of large quantities of waste to landfill was not only causing problems of pollution(e.g. leachate and gas production) but suitable sites were rapidly filling up. In Perth it is has been estimated that present landfill sites will only last until 2007 (Sinclair and Knight, 1991). To help extend the life of current landfill sites and in response to environmental concerns the Western . Australia Government produced a State Recycling Blueprint (Department of Commerce and Trade, 1993). This describes strategies for the minimisation of waste production and maximisation of …


Winter Diet And Nutritional Condition Of White-Tailed Deer In The Northern Black Hills, South Dakota, Robert G. Osborn Jan 1994

Winter Diet And Nutritional Condition Of White-Tailed Deer In The Northern Black Hills, South Dakota, Robert G. Osborn

Electronic Theses and Dissertations

Habitat deterioration in the northern Black Hills (NBH) of South Dakota may be responsible for declining white-tailed deer (Odocoileus virginianus) population levels (Griffin et al. 1992). Because of the relationship between habitat and nutrition, a two-year research project was initiated in January 1992 to evaluate the physical and nutritional condition of white-tailed deer inhabiting five NBH winter subranges. Habitat variables were measured at 100 random locations on each study area. Pellet groups were collected throughout each study area at two-week intervals during January, February, and March 1992 and 1993. Five female white-tailed deer were collected from each study area in …


A Trophic Gradient Analysis Of Lake Powell: The 1994 Utah State University Aquatic Ecology Laboratory Analyses, Wayne A. Wurtsbaugh, Megan Barker, Ron Brunson, David Fogle, Scott Hawxhurst, Chad Mellison, Lis Phillips, Felipe Queiroz, Daniel Zamecnik Jan 1994

A Trophic Gradient Analysis Of Lake Powell: The 1994 Utah State University Aquatic Ecology Laboratory Analyses, Wayne A. Wurtsbaugh, Megan Barker, Ron Brunson, David Fogle, Scott Hawxhurst, Chad Mellison, Lis Phillips, Felipe Queiroz, Daniel Zamecnik

Watershed Sciences Faculty Publications

From 9-11 April, 1994, the Aquatic Ecology Laboratory Class (FW462) of Utah State University sampled the upper reaches of Lake Powell to assess if a trophic gradient existed. We °ampled physical and chemical parameters (temperature, oxygen, conductivity, and total phosphorus), phytoplankton chlorophyll a, littoral and pelagic zooplankton biomass and composition, littoral and profundal benthic invertebrates, and fish abundance measured in the littoral zone (gill nets) and the pelagic zone (hydroacoustics). Data was collected along the upper 50 miles of the reservoir between Bullfrog and the Hite marina near the Colorado River inflow.

Our field trip was done just prior to …


Habitat Selection By Lacustrine Rainbow Trout Within Gradients Of Temperature, Oxygen, And Food Availability, Chris Luecke, D. Teuscher Jan 1994

Habitat Selection By Lacustrine Rainbow Trout Within Gradients Of Temperature, Oxygen, And Food Availability, Chris Luecke, D. Teuscher

Watershed Sciences Faculty Publications

Rainbow trout (Oncorhynchus mykiss [Walbaum]) in Castle Lake, California were concentrated at certain depths during day and evening hours. A fish bioenergetics simulation model based on vertical gradients of temperature, oxygen concentration, and food availability indicated that rainbow trout selected habitats that maximized growth rate. In 1 of the 2 years of study, a strong pattern of diel vertical migration of rainbow trout was evident and was associated with vertical migrations of daphnids in the lake. The simulation model correctly predicted the occurrence and magnitude of fish migration. During the day some trout resided at depths with little potential for …


Research Reports From Status Report: Identification Of Appropriate Standards For Corrective Action For A Release From Petroleum Underground Storage Tanks, G. Blomquist, Lyle V. A. Sendlein, Thomas Tobin, T. W. Struttmann, James S. Dinger, Paul M. Mcginley, Burl Naugle, Robert Guthries, Ralph R. Huffsey Jan 1994

Research Reports From Status Report: Identification Of Appropriate Standards For Corrective Action For A Release From Petroleum Underground Storage Tanks, G. Blomquist, Lyle V. A. Sendlein, Thomas Tobin, T. W. Struttmann, James S. Dinger, Paul M. Mcginley, Burl Naugle, Robert Guthries, Ralph R. Huffsey

KWRRI Research Reports

This document is a collection of research reports:

  • Cost of Closure and Remediation for Petroleum Underground Storage Tanks
  • Assessment of Number and Distribution of USTs
  • Analysis of Potable Water Sources in Kentucky
  • Analysis of Well Data and Soil Parameters as Related to the STATSGO Kentucky General Soil Map
  • Petroleum Products: Chemical Composition, Tocxicological and Environmental Data
  • Health Risk Analysis for Selected Petroleum Compounds
  • Summary of Analytical Methods
  • Soil Volume Calculations for UST Installations
  • Generic Organic Containment Pathway Analysis for Components of Petroleum in Soil and Groundwater