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Articles 22501 - 22530 of 24974
Full-Text Articles in Entire DC Network
Maine Nonpoint Source Pollution Assessment Report, Bureau Of Water Quality Control
Maine Nonpoint Source Pollution Assessment Report, Bureau Of Water Quality Control
Maine Collection
Maine Nonpoint Source Pollution Assessment Report
Prepared by the Maine Department of Environmental Protection, Bureau of Water Quality Control, Augusta, Maine 1989.
Contents: Executive Summary / Introduction / Methodology / Statewide Water Quality Summary / State And Local Agency Programs for Control of Nonpoint Source Pollution / Process for Identification of Best Management Practices and Associated Standards / List of References / List of Figures / List of Tables
Feasibility Study Of Maine's Small Hydropower Potential, James D. Sysko
Feasibility Study Of Maine's Small Hydropower Potential, James D. Sysko
Maine Collection
Feasibility Study of Maine's Small Hydropower Potential
Prepared by James D. Sysko, Small Hydro East, for the Maine State Planning Office, Maine Office of Energy Resources, January 1989.
"This study focuses on finding potential hydropower sites of approximately 50 kw to 1000 kw in capacity."
Wildlife Damage Management (Wdm) In The Southern Utah Adc District, United States Department Of Agriculture, Animal And Plant Health Inspection Service, Animal Damage Control
Wildlife Damage Management (Wdm) In The Southern Utah Adc District, United States Department Of Agriculture, Animal And Plant Health Inspection Service, Animal Damage Control
All U.S. Government Documents (Utah Regional Depository)
Across the United States, wildlife habitat has been substantially changed as human populations expand and land is used for human needs. These human uses and needs often compete with wildlife which increases the potential for conflicting human/wildlife interactions. In addition, segments of the public strive for protection for all wildlife; this protection can create localized conflicts between human and wildlife activities.
Effects Of Track Structure On Neutron Microdosimetry And Nanodosimetry, Randall S. Caswell
Effects Of Track Structure On Neutron Microdosimetry And Nanodosimetry, Randall S. Caswell
United States Department of Commerce: Staff Publications
The process by which neutrons transfer their energy to tissue is described, including the deposition of energy by secondary charged particle tracks in small sites; that is, microdosimetry and nanodosimetry. Three approximations are considered in order of increasing amounts of information on track structure: the continuous slowing-down approximation (CSDA), the straggling approximation, and the delta-ray approximation. Although simple approximations sometimes work quite well, much work remains to be done for very small sites, and for the inclusion of the effects of "passers" in the calculations.
The Probe, Issue 89 - January 1989
The Probe, Issue 89 - January 1989
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association
JANUARY 1989
APHIS Activity Report
High Tech Killing Traps
NADCA Logo
Personnel
Letters to Ye Ed
BioCenotics
13.2.5. Avian Cholera: A Major New Cause Of Waterfowl Mortality, Milton Friend
13.2.5. Avian Cholera: A Major New Cause Of Waterfowl Mortality, Milton Friend
Waterfowl Management Handbook
Avian cholera is a highly infectious disease caused by the bacterium, Pasteurella multocida. Acute infections are common and can result in death 6 to 12 hours after exposure. Under these circumstances “explosive” die-offs involving more than 1,000 birds per day have occurred in wild waterfowl. More chronic infections with longer incubation times and less dramatic losses also occur. Transmission can occur by bird-to-bird contact, ingestion of contaminated food or water, and perhaps in aerosol form.
13.2.6. Lead Poisoning: The Invisible Disease, Milton Friend
13.2.6. Lead Poisoning: The Invisible Disease, Milton Friend
Waterfowl Management Handbook
Lead poisoning is an intoxication resulting from absorption of hazardous levels of lead into body tissues. Lead pellets from shot shells, when ingested, are the most common source of lead poisoning in migratory birds. Other far less common sources include lead fishing sinkers, mine wastes, paint pigments, bullets, and other lead objects that are swallowed.
Coastal Plains : Land Use And The Environment, P R. George
Coastal Plains : Land Use And The Environment, P R. George
Journal of the Department of Agriculture, Western Australia, Series 4
Five years ago, this Journal of Agriculture reported on ways to overcome severe algal pollution of the Peel-Harvey estuarine system, 70 km south of Perth.
Several articles in this Journal of Agriculture discuss improved agricultural practices on the Swan Coastal Plain in particular, although the principals will apply to similar eutrophication of the Slbany harbours, Wilson Inlet and the Vassee-Wonnerup Estuary. They also emphasixe the fine balance between man's demand for potable water and land for rural, industrial and urban use.
Choosing A Calcium Supplement For Sheep Fed Cereal Grains, R L. Peet, Michael Hare
Choosing A Calcium Supplement For Sheep Fed Cereal Grains, R L. Peet, Michael Hare
Journal of the Department of Agriculture, Western Australia, Series 4
Sheep fed cereal grains as an energy source over summer usually need added calcium because cereal grains are generally low in calcium (for example, 0.03 per cent calcium compared to 0.26 per cent phosphorus), and there may not be a natural source such as clover, weeds, leafy stubble or edible bush in the paddock.
The safestt and most effective calcium supplement is finely ground limestone added to the feed, but some farmers have used other sources of calcium such as gypsum and superphosphate in this manner.
Improved Fertilizing Practices On The Peel-Harvey Catchment, P T. Arkell
Improved Fertilizing Practices On The Peel-Harvey Catchment, P T. Arkell
Journal of the Department of Agriculture, Western Australia, Series 4
Broad-acre farmers in the Peel-Harvey catchment have met a challange and achieved a great deal since the fertilizer extension programme started in 1983.
The main objective of the extension programme has been to ensure that every year three-quarters of the farmers make economically and technically sound fertilizer decisions, thus causing a minimum amount of phosphorus to enter the waterways of the Peel-Harvey estuarine system.
Intensive Animal Industries In The Peel-Harvey Catchment, R W. Payne
Intensive Animal Industries In The Peel-Harvey Catchment, R W. Payne
Journal of the Department of Agriculture, Western Australia, Series 4
The Swan coastal plain to the north and south of Perth is attractive for the intensive production of pigs and poultry for several reasons. It is close to markets, feed manufacturers and labour; has a less extreme climate than inland areas; and is underlain by a large reserve of high quality groundwater.
Because these are all intensive operations, large quantaties of nutrient-rich waste are produced over a very small area. They can severely damage ground and surface waters unless steps are taken to control the wastes which they produce.
This article oulines both the nature of intensive aniamal industries in …
Surface Sediments And Their Relationship To Water Quality In Hillsborough Bay, A Highly Impacted Subdivision Of Tampa Bay, Florida, J.O.R. Johansson, A.P. Squires
Surface Sediments And Their Relationship To Water Quality In Hillsborough Bay, A Highly Impacted Subdivision Of Tampa Bay, Florida, J.O.R. Johansson, A.P. Squires
Reports
This paper will summarize the composition of surface sediment and sediment oxygen demand rated in Hillsborough Bay. Also, a first attempt is made to relate the nutrients released from these sediments to the phytoplankton, the dominant primary producers of the bay.
A Characterization Of Tampa Bay Sediments, L J. Doyle, G. R. Brooks, K. A. Fanning, E. S. Van Vleet, R. H. Byrne, N. J. Blake
A Characterization Of Tampa Bay Sediments, L J. Doyle, G. R. Brooks, K. A. Fanning, E. S. Van Vleet, R. H. Byrne, N. J. Blake
Reports
This initial phase of the project involves assessing the present state of knowledge of sediments in Tampa Bay and the identification of data gaps, or areas where more detailed information is required to achieve project objectives. The literature search produced 273 data sources that from their abstracts in the data base are applicable to the project (Appendix I). Data sources were reviewed by experts in the fields of sedimentology, nutrient chemistry, organic geochemistry, trace metal and radionuclide geochemistry, and benthic biology who then contributed the following summary sections.
13.2.4. Avian Botulism: Geographic Expansion Of A Historic Disease, Louis N. Locke, Milton N. Friend
13.2.4. Avian Botulism: Geographic Expansion Of A Historic Disease, Louis N. Locke, Milton N. Friend
Waterfowl Management Handbook
Avian botulism is a paralytic, often fatal disease of birds resulting from ingestion of toxin produced by the bacterium Clostridium botulinum. Waterfowl die-offs from the botulism are usually caused by type C toxin; sporadic die-offs among fish-eating birds, such as common loons (Gavia immer) and gulls, have been caused by type E toxin.
Not enough is known about avian botulism to precisely identify the factors leading to an outbreak. When an outbreak does occur, it is usually perpetuated by a well-understood bird-maggot cycle (Figure 1).
A Student Handbook For The Environmental Education / Outdoor School Program In The Middle School, Robert Charles Kenck Jr.
A Student Handbook For The Environmental Education / Outdoor School Program In The Middle School, Robert Charles Kenck Jr.
All Graduate Projects
The purpose of this project was to develop a student handbook that can be used from the onset of an environmental study through the inter-active field study. Students will use the handbook as they begin to study environmental education in the classroom. The handbook will continue to be used as each student attends a three day outdoor school to study firsthand their environment through field activities. The handbook will remain the property of the students.
Rottnest Island : A Reference List, Jennifer Browne
Rottnest Island : A Reference List, Jennifer Browne
Research outputs pre 2011
No abstract provided.
Irrigation And Fertilizer Management For Horticultural Crops On The Swan Coastal Plain, I R. Mcpharlin, Greg Luke
Irrigation And Fertilizer Management For Horticultural Crops On The Swan Coastal Plain, I R. Mcpharlin, Greg Luke
Journal of the Department of Agriculture, Western Australia, Series 4
The Swan Coastal Plain is an important area for the production of vegetables, flowers and fruits in Western Australia. The yellow Cottesloe, Karrakatta and the white-grey Bassendean Sands upon which most of this production is based are infertile in their natural state and require large inputs of fertilizer for succesful production of horticultural crops.
Improved irrigation and fertilizer management will be needed to reduce nutrient leaching from horticultural crops on the coastal plain. This will probably involve applying fertilizer and water more frequently, but in smaller quantaties thaan currently practiced. The result should more closely match water and fertilizer supply …
Bacterial Quality Of Private Water Wells In Clark County, Arkansas, S. Conine, D. Cox, K. Mitchell, Clark Kuyper, Jimmy D. Bragg
Bacterial Quality Of Private Water Wells In Clark County, Arkansas, S. Conine, D. Cox, K. Mitchell, Clark Kuyper, Jimmy D. Bragg
Journal of the Arkansas Academy of Science
Most private water wells in Clark County appeared to be contaminated by bacteria, apparently entering the wells from surface water seepage. Eighteen to 24% of the wells investigated were positive for fecal contamination. Deeper wells were less often contaminated. More than one-half of the wells sampled exceeded recommended limits of inorganic chemicals for safe potable water. High concentrations of iron and manganese were most common, exceeding recommended limits in more than 40% of the wells
Planning For Horticultural Expansion On The Swan Coastal Plain, P Coghlan, Geoff Moore, Jim Dixon
Planning For Horticultural Expansion On The Swan Coastal Plain, P Coghlan, Geoff Moore, Jim Dixon
Journal of the Department of Agriculture, Western Australia, Series 4
Horticulture is an intensive, high value form of agriculture highly dependant on the availability of good water supplies for the year-round production of fresh produce. Production increase in Western Australia and the encouragement and development of export markets has caused rapid expansion if the industry in recent years.
Expansion is expected to continue, placing severe pressure on available water supplies and suitable land close to markets. At present' 90 per cent of the Stase's horticultural land is on the Swan Coastal Plain and minor selected hills areas around Perth.
Loss Of Biological Diversity: A Global Crisis Requiring International Solutions: A Report To The National Science Board, Craig Call Black, Perry L. Adkisson, Gardner Mallard Brown, Rita Rossi Colwell, Charles E. Hess, James B. Holderman, K. June Lindstedt-Siva, William A. Nierenberg, Peter Hamilton Raven, Theodore M. Smith, Edward O. Wilson, W. Franklin Harris
Loss Of Biological Diversity: A Global Crisis Requiring International Solutions: A Report To The National Science Board, Craig Call Black, Perry L. Adkisson, Gardner Mallard Brown, Rita Rossi Colwell, Charles E. Hess, James B. Holderman, K. June Lindstedt-Siva, William A. Nierenberg, Peter Hamilton Raven, Theodore M. Smith, Edward O. Wilson, W. Franklin Harris
Harold W. Manter Laboratory of Parasitology: Library Materials
Executive Summary
Biological diversity refers to the variety and variability among living organisms and the ecological complexes in which they occur. Diversity can be defined as the number of different items and their relative frequency. For biological diversity, these items are organized at many levels, ranging from complete ecosystems to the chemical structures that are the molecular basis of heredity. Thus, the term encompasses different ecosystems, species, genes, and their relative abundance (OTA, 1987).
There is an ongoing, unprecedented loss of the variety as well as absolute numbers of organisms-from the smallest microorganism to the largest and most spectacular of …
Farming Systems Research/Extension And The Concepts Of Sustainability, Charles A. Francis, Peter E. Hildebrand
Farming Systems Research/Extension And The Concepts Of Sustainability, Charles A. Francis, Peter E. Hildebrand
Department of Agronomy and Horticulture: Faculty Publications
Farming Systems Research and Extension (FSR/E) has strongly influenced the direction of agricultural development over the past two decades. Involving farmers, change agents and researchers, this participatory approach to technological improvement has evolved as an efficient means to develop individual components and more integrated systems that are uniquely suited to specific biophysical and socioeconomic conditions. Farmers with similar conditions and for whom specific recommendations are appropriate are grouped, in FSR/E, into identifiable Recommendation Domains. The technologies recommended conform with the biophysical and socioeconomic constraints that create environments within the domains, based on the philosophy that new technologies must conform with …
Toxicity And Environmental Health Hazards Of Petroleum Products In Wells Used For Drinking Water In The Intermountain West, Robert D.R. Parker, Raghubir P. Sharma, R. Ryan Dupont, Gin-Chang Hsieh
Toxicity And Environmental Health Hazards Of Petroleum Products In Wells Used For Drinking Water In The Intermountain West, Robert D.R. Parker, Raghubir P. Sharma, R. Ryan Dupont, Gin-Chang Hsieh
Reports
Introduction: Groundwater is aprimary source of drinking water for about 50 percent of the population in the U.S. This source of drinking water has been generally regarded as safe from contamination. Several papers indicate that numerous underground storage tanks containing petroleum products may be leaking and contaminating public water supply wells across the U.S. (Matis, 1971; Ferguson, 1979; Woodhull, 1981; Burmaster and Harris, 1982; Lehman, 1984; Dowd, 1984; OTA, 1984). A study conducted by the Utah Cureau of Solid and Hazardous Wastes in 1985 concluded that there are at least 2,314 underground steel tanks, most of which are used to …
Soil Phase Photodegradation Of Toxic Organics At Contaminated Disposal Sites For Soil Renovation And Groundwater Quality Protection, W. M. Moore, R. Ryan Dupont, J. E. Mclean
Soil Phase Photodegradation Of Toxic Organics At Contaminated Disposal Sites For Soil Renovation And Groundwater Quality Protection, W. M. Moore, R. Ryan Dupont, J. E. Mclean
Reports
Accurate assessment of the potential for contaminated soil remediation requires detailed knowledge of the fate of waste constituents within the soil environment. For many non-biodegradable organics compounds, photochemical degradation may provide a potential pathway for the removal of such compounds from soil surfaces. A study was conducted to evaluate the rate of photodegradation of ten hazardous organic compounds from three soils, silica gel, and four soil minerals (kaolinite, montmorillonite, illite, and calcite) under conditions of controlled irradiation. In addition, the effect of siz amendment treatments (methylene blue, riboflavin, hydrogen peroxide, diethylamine, peat moss, and silica gel) on the rates of …
Bear River Water Quality: Bioavailable Phosphorus Measurement, Sources, And Control, Kenneth W. Barker, Darwin L. Sorensen, Jay C. Andersen, Jean M. Ihnat
Bear River Water Quality: Bioavailable Phosphorus Measurement, Sources, And Control, Kenneth W. Barker, Darwin L. Sorensen, Jay C. Andersen, Jean M. Ihnat
Reports
No abstract provided.
The Perception Of Refuse In West African Cities The Case Of Techiman, Ghana, Joseph Mensah
The Perception Of Refuse In West African Cities The Case Of Techiman, Ghana, Joseph Mensah
Theses and Dissertations (Comprehensive)
The refuse problem in most West African cities has attained such a massive proportion that even the most insensitive city dweller cannot overlook it. Of the very few studies undertaken on the issue most emphasize the distribution, the magnitude and the economic effects of refuse on the urban environment. Although evidence suggests that culture is the filter through which different environments are held significant by the people, little has been documented on the attitudes and perceptions of West African people in relation to the quality of their environment. The present study analyses the public perception of refuse and how this …
The Probe, Issue 88 - December 1988
The Probe, Issue 88 - December 1988
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association
DECEMBER 1988
NADCA Executive Board
UGO Logo
Endangered Species
Fourteenth Vertebrate Pest Conference
Livestock Protection Collar
NADCA Dues
Letters to Ye Ed
Progressive Animal Welfare Society
Danish Pest Infestation Lab Annual Report 1987
The Probe, Issue 87 - November 1988
The Probe, Issue 87 - November 1988
The Probe: Newsletter of the National Animal Damage Control Association
CONTENTS: NADCA Meeting Priorities Retired Personnel: Rusty Birchfield Reading Material In Memorial: Frank Sessions Letters to the Editor Rodent Roast Botulinus Help in removing red fox New Products Editorial Column NADCA Membership Application
Resource Law Notes Newsletter, No. 15, Oct. 1988, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 15, Oct. 1988, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
The Probe, Issue 86 - October 1988
The Probe, Issue 86 - October 1988
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association
OCTOBER 1988
Wildlife Legislative Fund of America
APHIS Activity Report
Giardia Lamblia
Personnel
Letters to Ye Ed
Preserving Habitat
Water Current, Volume 20, October 1988
Water Current, Volume 20, October 1988
Water Current Newsletter
Bonneville Power Administrator Compares Missouri Basin Reservoirs with Pacific Northwest's
Nebraska Ranks Third in Water Use in U.S.
Spalding Appointed Associate Director of UNL Water Center
Nebraska Water Conference Council Holds Fall Meeting
Water Research Proposals are Due December 1
Answers to Water Quality Questions Closer with Burlington Northern Foundation $ Million Grant
Former Nebraskans Address Northwest Water Tour Group
Drought Responses Discussed at Forum