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Articles 46081 - 46110 of 52497
Full-Text Articles in Physical Sciences and Mathematics
An Automatic Trigger For Bird Frightening Devices, Steve Price, John Adams
An Automatic Trigger For Bird Frightening Devices, Steve Price, John Adams
Eastern Wildlife Damage Control Conference: 4th (1989)
This triggering unit for animal frightening devices was developed because of an expressed need for a more effective method of breaking up starling and grackle roosts. The USDA, Animal Damage Control (ADC) office in Louisville, KY suggested that a device which detected the presence of the birds before activating and then emitted different sounds would be much more effective than single functioning devices on timers. Existing frightening devices have limited effectiveness because the birds become accustom to the repeated and periodic actuations of the same thing over and over again. In November of 1986, Mr. Bernice Constantin, District Supervisor for …
Participants
Eastern Wildlife Damage Control Conference: 4th (1989)
List of participants
An Investigation Of Animal Damage Associated With Maple Syrup Production, J. Allan May, Dennis Slate
An Investigation Of Animal Damage Associated With Maple Syrup Production, J. Allan May, Dennis Slate
Eastern Wildlife Damage Control Conference: 4th (1989)
An increase in the use of plastic tubing systems to collect sap from sugar maples (Acer saccharum) has allowed syrup producers to boost production in recent years, but not without cost. Rodents gnawing on tubing, spouts, and fittings may cause damage in excess of $300,000 annually in Vermont, the largest maple producing state. Red squirrels (Tamiasciurus hudsonicus), gray squirrels (Sciurus carolinensis), and chipmunks (Tamias striatus) appear to be responsible for the majority of damage. Other species including flying squirrels (Glaucomvs sabrinus) , white-footed mice (Peromvscus leucopus), porcupines ( …
Wolf Depredation On Livestock In Minnesota Annual Update Of Statistics - 1988, William J. Paul
Wolf Depredation On Livestock In Minnesota Annual Update Of Statistics - 1988, William J. Paul
Eastern Wildlife Damage Control Conference: 4th (1989)
Depredation by wolves (Canis lupus) on livestock and poultry in Minnesota is a problem for some producers. A small percentage of the farms in the wolf range are affected annually and a few of these farms suffer substantial monetary loss in a given year. From 1976 through 1988, the number of farms suffering verified wolf depredations ranged from 9 to 38 (x = 23) per year out of about 7,200. From 1977 through 1988 the highest cattle losses claimed by farmers were 0.45 per 1,000 available in 1979; the highest sheep losses claimed were 2.66 per 1,000 available …
Population Dynamics And Harvest Response Of Beaver, Neil F. Payne
Population Dynamics And Harvest Response Of Beaver, Neil F. Payne
Eastern Wildlife Damage Control Conference: 4th (1989)
"For when we speak of the fur trade, we mean the beaver trade. Other furs were handled; others — notably the rich sea otter — were more valuable by far. But the beaver was the root and core of the trade ... Many men died, a continent was explored, an indigenous [human] race degraded and its culture crushed; all because beaver fur, with its tiny barbs, felted up better than any other" (Berry 1961:18). The habits of beaver (Castor canadensis) allow them to be located and trapped readily, resulting in their extirpation from many areas. Beaver populations have …
Ecologically Sensitive Management Options For Bats, Paul B. Robertson
Ecologically Sensitive Management Options For Bats, Paul B. Robertson
Eastern Wildlife Damage Control Conference: 4th (1989)
Over the past decade, there has been a dramatic, positive shift in the public image of bats in the United States (Tuttle 1988a). This shift is particularly impressive in light of the inappropriate and poor public image that bats have suffered in most western nations in the last century. Over the past decade, a sizeable segment of the U.S. public, as well as local, state and national officials, have been educated to the ecological and economic value of bats which results from their insectivory and plant pollination activities (Olkowski and Olkowski 1989, Tuttle 1988b). The fact that they pose a …
Animal Damage Control And The Wildlife Profession, Gary J. San Julian
Animal Damage Control And The Wildlife Profession, Gary J. San Julian
Eastern Wildlife Damage Control Conference: 4th (1989)
Conflicts between man and wildlife have always been a part of our history. We have tried to control the damage caused by wildlife and found that this was not always in the best interest of the resource. The role of animal damage control in our profession has changed and so has the public's view of it. As professionals we must strive to explain the need and value of wildlife damage management to our peers, the public and our detractors. This can be accomplished by participation in our professional organizations, the presentation of papers at scientific meetings, and open discussion of …
Extent And Nature Of Deer Damage To Commercial Nurseries In New York, Roger W. Sayre, Daniel J. Decker
Extent And Nature Of Deer Damage To Commercial Nurseries In New York, Roger W. Sayre, Daniel J. Decker
Eastern Wildlife Damage Control Conference: 4th (1989)
We surveyed nursery producers in New York to determine the extent, nature and economic impact of deer damage to their operations, and to assess their attitudes towards deer. Seventy-three percent of the producers experienced deer damage to their crops in 1988. Average costs for replacement were nearly $6,000 per grower for those reporting damage estimates (and over $8,000 if 1 extreme value was included). Statewide damage estimates ranged from $500,000 to $1.2 million (depending on assumptions). Forty-six percent used damage control, which cost an average of about $2,000 per grower. More than 80% of the producers were classified as "non-accepting" …
Fertility Control As A Tool For Regulation Of Wildlife Populations, U.S. Seal
Fertility Control As A Tool For Regulation Of Wildlife Populations, U.S. Seal
Eastern Wildlife Damage Control Conference: 4th (1989)
Biological control of reproduction and fertility is a normal part of the life history of all organisms. Control mechanisms allow timing of reproduction with respect to age, time of day, season, and other periodic environmental events. Further modulation can occur with variations in temperature, rainfall, nutrition, and health status. Interactions with other members of the species, ranging from pherohormonal stimulation of estrus to social delay of puberty and breeding to infanticide, provide further constraints upon fertility and recruitment. All of these processes ultimately act through molecular neuroendocrine mechanisms that are under genetic control and are subject to natural selection and …
Survey Of Mississippi Catfish Farmers On Means, Effort, And Costs To Repel Fish-Eating Birds From Ponds, A.R. Stickley, K.J. Andrews
Survey Of Mississippi Catfish Farmers On Means, Effort, And Costs To Repel Fish-Eating Birds From Ponds, A.R. Stickley, K.J. Andrews
Eastern Wildlife Damage Control Conference: 4th (1989)
Eighty-seven percent of 281 Mississippi catfish farmers felt that fish-eating birds were enough of a problem to warrant harassment. Fanners estimated that they spent an average of 2.6 man-hours per day harassing birds at an average annual cost of $7400. Sixty percent of the farmers who harassed birds did so by driving around the ponds and firing at birds to repel them. Propane exploders and pyrotechnics were also used. Pyrotechnics were judged the most effective repellent technique. The cost of bird harassment according to these farmers is $2.1 million. The value of fish loss to cormorants alone is roughly estimated …
Coyote Depredation Control In New York - An Integrated Approach, Thomas N. Tomsa, James E. Forbes
Coyote Depredation Control In New York - An Integrated Approach, Thomas N. Tomsa, James E. Forbes
Eastern Wildlife Damage Control Conference: 4th (1989)
The New York State Cooperative Coyote Damage Control Program was established in late 1986 through a cooperative agreement between the New York State Department of Agriculture and Markets (NYSDAM) and USDA/ APHIS/ ADC in response to escalating complaints of coyote (Canis latrans) depredations on sheep from 1980-85. Ten counties with histories of and/or potential for coyote/livestock conflicts were identified and targeted for publicity and primary program emphasis. Program staff received 58 reports of coyote depredations on 182 sheep from 32 producers in the ten target counties and seven outlying counties from May 1987 through May 1989/ and verified 46 complaints …
Black Bear Damage In Virginia, Michael R. Vaughan, Patrick F. Scanlon, Sue Evelyn P. Mersmann, Dennis D. Martin
Black Bear Damage In Virginia, Michael R. Vaughan, Patrick F. Scanlon, Sue Evelyn P. Mersmann, Dennis D. Martin
Eastern Wildlife Damage Control Conference: 4th (1989)
We examined records of black bear damage in Virginia on Shenandoah National Park, (SNP) (1979-1988) and non-Park lands (1973-1988). Mean annual damage was $5,470 on non-Park lands and $1,217 on the Park. Corn and beehives accounted for 79 percent and personal property for 72 percent of the economic loss on non-Park and Park lands respectively. Young males were responsible for most damage on non-Park lands while adults of both sexes caused most damage on SNP. Over 70 percent of bear damage incidents in the state occurred either on the Park or on land immediately adjacent to the Park. Moving bears …
Use Of Donkeys To Guard Sheep And Goats In Texas, Murray T. Walton, C. Andy Feild
Use Of Donkeys To Guard Sheep And Goats In Texas, Murray T. Walton, C. Andy Feild
Eastern Wildlife Damage Control Conference: 4th (1989)
Though livestock guarding dogs have received considerable attention in recent years, other animals including donkeys (Equus asinus) are being used to protect sheep and goats from predation by coyotes (Canis latrans). In Texas many ranchers prefer donkeys due to low cost, relatively small maintenance requirements, and compatibility with other predator control methods. This paper describes husbandry practices for use of guard donkeys and relates rancher accounts of their effectiveness in protecting sheep and goats.
Elk And Crop Damage In Pennsylvania, Gary W. Witmer, Rawland Cogan
Elk And Crop Damage In Pennsylvania, Gary W. Witmer, Rawland Cogan
Eastern Wildlife Damage Control Conference: 4th (1989)
The native eastern subspecies of elk (Cervus elaphus canadensis) was once widespread in Pennsylvania, but was extirpated from the state by 1880 (Bryant and Maser, 1982). About 177 Rocky Mountain elk (C.e. nelsoni) were re-introduced to the state between 1913 and 1926 (Sassaman, 1985). The herd increased as did crop damage complaints. Hunting seasons began in 1923 and continued until 1931. No further hunting was allowed because the herd had declined steadily. A small herd persisted in North-central Pennsylvania, in Elk and Cameron Counties. Elk sightings were rare by 1948, despite 17 years of closed hunting …
Demonstration Electric Fences To Control Black Bear Damage To Apiaries In New York State, Janet L. Sillings, Thomas N. Tomas Jr., James E. Forbes
Demonstration Electric Fences To Control Black Bear Damage To Apiaries In New York State, Janet L. Sillings, Thomas N. Tomas Jr., James E. Forbes
Eastern Wildlife Damage Control Conference: 4th (1989)
The New York State black bear (Ursus americanus) population/ approximately 4,000 animals (Clarke 1977)/ causes damage to apiaries in the Catskill/ Adirondack/ and Southern Tier regions of the state. During 1987/ 1988/ and 1989, USDA Animal Damage Control (ADC) administered a program in New York to control bear damage to apiaries. Control activities were carried out pursuant to a Cooperative Agreement between ADC and the New York State Department of Agriculture and Markets/ and were supported by matching Federal- State contributions. Program objectives were beekeeper education aimed at preventing bear damage and for the construction of demonstration temporary electric fences. …
Farmland Habitat Use By Wild Turkeys In Wisconsin, R.G. Wright, R.N. Paisley, J.F. Kubisiak
Farmland Habitat Use By Wild Turkeys In Wisconsin, R.G. Wright, R.N. Paisley, J.F. Kubisiak
Eastern Wildlife Damage Control Conference: 4th (1989)
Habitat use and food habits of wild turkeys (Meleagris pallopavo) were studied during summer 1988-89 in southwestern Wisconsin in order to address growing concerns that turkeys cause considerable crop damage. Intensive telemetric monitoring in 1988 suggested that turkeys used crop fields (corn-alfalfa-oats) at a low rate compared to forest types. Brooded hens used forest habitats less and field habitats more than broodless hens and gobblers. Brooded hens appeared to use forest and crop field habitats less and non-crop fields (pasture and idle) more than expected. Broodless hens and gobblers appeared to use forest types and non-crop fields more …
Water Current, Volume 21, September 1989
Water Current, Volume 21, September 1989
Water Current Newsletter
United Nations Association, Nebraska Division Hears Roger Gold's "World's Water Problems"
Groundwater--One Word or Two?
Sandhills Water Resources and Irrigation Observed on Annual Nebraska Tour
Survey Reveals Recreational Activities of Nebraskans
Farm Conservation and Water Protection Act of 1989
New Staff at Water Center
Colorado State Receives $9 Million for Somalian Water Management Project
EPA Announces Third Method to Determine Drinking Water Coliforms
NRD History and Mission Explained in Booklet Now Available to Public
White House Conference on Water Resources Proposed by NWA to Discuss Water Issues
Acid Rain International Problem; Midwest's Too
Deadline for Grant Proposals to USGS Announced …
The Prairie Naturalist Volume 21, No.3 September 1989
The Prairie Naturalist Volume 21, No.3 September 1989
The Prairie Naturalist
SEED DISPERSAL CHARACTERISTICS OF PLAINS SILVER SAGEBRUSH ▪ C. L. Wambolt, T. Walton, and R. S. White
ON THE TRAIL OF THE ANT, VEROMESSOR LOBOGNATHUS . ▪ G. C. Wheeler and J. Wheeler
LAND USE RELATIONSHIPS TO AVIAN CHOLERA OUTBREAKS IN THE NEBRASKA RAINWATER BASIN AREA ▪ B. J. Smith, K. F. Higgins, and C. F. Gritzner
INCIDENCE OF LEAD SHOT IN THE RAINWATER BASINS OF SOUTH CENTRAL NEBRASKA ▪ . D. W. Oates
REPRODUCTION, RECRUITMENT, AND SURVIVAL OF BROWN AND RAINBOW TROUT IN A PRAIRIE COTEAU STREAM ▪ C. L. Milewski and D. W. Willis
SIZE STRUCTURE AND CATCH …
The Probe, Issue 95 - September 1989
The Probe, Issue 95 - September 1989
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association
SEPTEMBER 1989
Letters to Ye Ed
Animal Rights
“Jack the Ripper” Cat Killings
APHIS Activity Report
Superfund Record Of Decision: Monticello Vicinity Properties, Ut, U.S. Environmental Protection Agency, Office Of Emergency And Remedial Response
Superfund Record Of Decision: Monticello Vicinity Properties, Ut, U.S. Environmental Protection Agency, Office Of Emergency And Remedial Response
All U.S. Government Documents (Utah Regional Depository)
The Monticello Vicinity Properties site, also known as the Monticello Radiation Contaminated Properties, is a federally-owned abandoned vanadium and uranium mill area in the city of Monticello, San Juan County, Utah. Land use in the area is residential, however, there is limited commercial use as well. Milling of vanadium and uranium occurred from 1944 to 1960. Throughout the operating period, mill tailings were used in the city of Monticello for construction purposes including fill for open lands; backfill around water, sewer, and electrical lines; sub-base for driveways, sidewalks, and concrete slabs; backfill against basement foundations; and as sand mix in …
An Analysis Of The Water Situation In The United States: 1989-2040, Richard W. Guldin, Usda Forest Service
An Analysis Of The Water Situation In The United States: 1989-2040, Richard W. Guldin, Usda Forest Service
All U.S. Government Documents (Utah Regional Depository)
Several Federal agencies have historically had responsibilities for conducting assessments of the Nation's water resources. The U.S. Geological Survey (USGS), U.S. Army Corps of Engineers, U.S. Department of Agriculture's Soil Conservation Service (SCS), and U.S. Environmental Protection Agency (EPA) and its predecessor agencies, among others, have conducted studies assessing the current situation and future prospects for water in particular regions of the country. Responsibility for national water assessments was assigned to the U.S. Water Resources Council (WRC) by the Water Resources Planning Act of 1965. With the demise of the WRC in 1981, several member agencies have attempted to take …
Biological Reductive Dechlorination Of Tetrachloroethylene And Trichloroethylene To Ethylene Under Methanogenic Conditions, David L. Freedman, James M. Gossett
Biological Reductive Dechlorination Of Tetrachloroethylene And Trichloroethylene To Ethylene Under Methanogenic Conditions, David L. Freedman, James M. Gossett
Publications
A biological process for remediation of groundwater contaminated with tetrachloroethylene (PCE) and trichloroethylene (TCE) can only be applied if the transformation products are environmentally acceptable. Studies with enrichment cultures of PCE- and TCE-degrading microorganisms provide evidence that, under methanogenic conditions, mixed cultures are able to completely dechlorinate PCE and TCE to ethylene, a product which is environmentally acceptable. Radiotracer studies with [14C]PCE indicated that [14C]ethylene was the terminal product; significant conversion to 14CO2 or 14CH4 was not observed. The rate-limiting step in the pathway appeared to be conversion of vinyl chloride to ethylene. To sustain reductive dechlorination of PCE and …
Resource Law Notes Newsletter, No. 18, Sept. 1989, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 18, Sept. 1989, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
Significant Bedrock Features Of The Maine Coast : Boothbay To Calais, Carol White, A. M. Hussey Ii
Significant Bedrock Features Of The Maine Coast : Boothbay To Calais, Carol White, A. M. Hussey Ii
Maine Collection
Significant Bedrock Features of the Maine Coast : Boothbay to Calais
Carol White and A.M.Hussey II
Planning Report # 85
A Report Prepared for the Maine Critical Areas Program, Maine State Planning Office, 184 State Street, Augusta, Maine 04333 (September 1989).
Contents: Introduction / Types of Significant Features / Description and Interpretation of Geologic Features / Overview of the Geology of Coastal Maine / Criteria for Significant Geological Localities / Inventory Methods / Area Descriptions / Site Descriptions / Conclusions and Recommendations / References
Tidal Flat Ecology: An Experimental Approach To Species Interactions By K. Riess, John T. Tanacredi Ph.D.
Tidal Flat Ecology: An Experimental Approach To Species Interactions By K. Riess, John T. Tanacredi Ph.D.
Faculty Works: CERCOM (1977-2016)
A periodic pause to intensely observe a singularly unique ecosystem sharpens one's awareness of this diverse world of ours, especially, as the author notes, if one observes a transitional ecosystem whose ecological treasures are hidden or maybe obscured by a tidal sediment's resemblance to a large, rotten cheese! "It smells, is slimy and sticky, is punched with holes and crowded with various worms." Sounds good to me! Reise's "pause" encompasses 10 years in which he investigated the Wadden Sea mudflats near the border between West Germany and Denmark. He uses this site to discuss the biotic and abiotic interactions within …
Toxicology Of Synthetic Pyrethroids In Aquatic Organisms: An Overview, Steven P. Bradbury, Joel R. Coats, D. M. Symonik, S. D. Dyer, L. K. Timson, G. J. Atchison
Toxicology Of Synthetic Pyrethroids In Aquatic Organisms: An Overview, Steven P. Bradbury, Joel R. Coats, D. M. Symonik, S. D. Dyer, L. K. Timson, G. J. Atchison
Steven P. Bradbury
The aquatic toxicology of the photostable synthetic pyrethroid insecticides as it affects two important groups of susceptible organisms — fish and aquatic insects — is discussed. The sensitivity of these aquatic species to the pyrethroids is dependent on several factors, including toxicokinetics, target site (nervous system), sensitivity and possible secondary mechanisms of action, as well as chemical and physical properties of the aquatic medium that influence toxicity and bioavailability. Uptake rates and routes of fenvalerate greatly affected the toxicity of fenvalerate to mosquito larvae. LD50 values were determined for cuticular and dietary exposure routes by utilizing radiolabeled fenvalerate at the …
Bioremediation Of Contaminated Surface Soils, J. L. Sims, R. C. Sims, J. E. Matthews
Bioremediation Of Contaminated Surface Soils, J. L. Sims, R. C. Sims, J. E. Matthews
Reports
Biological remediation of soils contaminated with organic chemicals is an alternative treatment technology that can often meet the goal of achieving a permanent clean-up remedy at hazardous waste sites, as encouraged by the U.S. Environmental Protection Agency (U.S. EPA) for implementation of The Superfund Amendments and Authorization Act (SARA) of 1986. Bioremediation is consistent with the philosophical thrust of SARA, for it involves the use of naturally occurring microorganisms to degrade and/or detoxify hazardous constituents in the soil at a contaminated slip to protect public health and the environment.Bioremediation of contaminated soils, including applications and limitations, has been addressed.
Forage Shrubs And Grasses For Revegetating Saltland, H V. Runciman, C V. Malcolm
Forage Shrubs And Grasses For Revegetating Saltland, H V. Runciman, C V. Malcolm
Bulletins 4000 -
Salt tolerant shrubs and grasses are used for forage production from salt-affected farmland. This Bulletin is designed to assist in recognition of the important species in Western Australia and to provide information on their use. The species listed have more forage value than some natural indicators and colonizers of saltland, such as Mediterranean barley grass (Hordeum geniculatum), ice plant (Mesembryanthemum spp.), mallee lovegrass (Eragrostisdielsii), salt spurry (Spergularia spp.), curly ryegrass (Parapholis incurva) and beard grass (Polypogon monspeliensis). Some of the plants are also useful for rehabilitating degraded rangeland and mine …
Geotechnical Evaluation Of Sand Resources On The Inner Shelf Of Southern Virginia : Final Report To The City Of Virginia Beach, Suzette M. Kimball, James K. Dame
Geotechnical Evaluation Of Sand Resources On The Inner Shelf Of Southern Virginia : Final Report To The City Of Virginia Beach, Suzette M. Kimball, James K. Dame
Reports
The Coastal Erosion Abatement Commission, in its report to the General Assembly (1979), recommended that "there is a need to locate sources of sand supplies for rebuilding public beaches." The Sand Resources Inventory, completed in 1982 by the College of William and Mary, Virginia Institute of Marine Science, was initiated in response to this directive. The Sand Resources Inventory, however, focused on the Chesapeake Bay. The City of Virginia Beach, facing a chronic need to renourish beaches facing the Atlantic Ocean, elected to develop an inventory of beach-quality sand reserves existing on the inner shelf of the Atlantic coast. This …
Late Quaternary Geomorphology Of The Great Salt Lake Region, Utah, And Other Hydrographically Closed Basins In The Western United States: A Summary Of Observations, United States, National Aeronautics And Space Administration
Late Quaternary Geomorphology Of The Great Salt Lake Region, Utah, And Other Hydrographically Closed Basins In The Western United States: A Summary Of Observations, United States, National Aeronautics And Space Administration
Water
This report reviews attributes of Quaternary lakes and lake basins which are often important in the environmental prehistory of semideserts. Basin-floor and basin-closure morphometry have set limits on paleolake sizes; lake morphometry and basin drainage patterns have influenced lacustrine processes; and water and sediment loads have influenced basin neotectonics. Information regarding inundated, runoff-producing, and extra-basin spatial domains is acquired directly from the paleolake record, including the littoral morphostratigraphic record, and indirectly by reconstruction.