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Full-Text Articles in Physical Sciences and Mathematics

Double-Crested Cormorant Damage To A Commercial Fishery In The Apostle Islands, Wisconsin, Scott R. Craven, Esther Lev Sep 1985

Double-Crested Cormorant Damage To A Commercial Fishery In The Apostle Islands, Wisconsin, Scott R. Craven, Esther Lev

Eastern Wildlife Damage Control Conference: 2nd (1985)

The endangered classification of the double-crested cormorant (DCC) in Wisconsin resulted in complete protection and significant management efforts in the 1970's., These efforts, probably coupled with reduced pesticide loads, resulted in a resurgence of Wisconsin cormorant populations from a low of 66 pairs in 1972 to 1028 pairs in 1982» The DCC was reclassified as a threatened species in 1982. This apparent success story did not take into consideration the potential negative impact of an abundant piscivorous bird. In 1978 a colony of DCC's became established on a remote rocky island in the Apostle Islands National, Lakeshore, in Lake Superior. …

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Role And Responsibilities Of Agencies For Wildlife Damage Control, Hal S. Atkinson Jr. Sep 1985

Role And Responsibilities Of Agencies For Wildlife Damage Control, Hal S. Atkinson Jr.

Eastern Wildlife Damage Control Conference: 2nd (1985)

The wildlife resources of the State belong to the people of the state as a whole. The Wildlife Resources Commission is charged with the stewardship of these resources and is empowered by general statute to promulgate those regulations deemed necessary to accomplish this charge.

The Commission administers a management program designed to maintain wildlife populations at acceptable levels from both the sportsman's and landowners perspective. However, at times, both game and non-game species are involved in various conflicts with our human population. Our general statutes allow an owner or lessee of property to take without prior state approval any wildlife …

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Future Of Wildlife Damage Control And The Cooperative Extension Service, Peter T. Bromley Sep 1985

Future Of Wildlife Damage Control And The Cooperative Extension Service, Peter T. Bromley

Eastern Wildlife Damage Control Conference: 2nd (1985)

The driving forces which determine the role of the Cooperative Extension Service in wildlife damage control are (1) the demand for information by the public, (2) the degree of support for programs at the national level, and (3) the level of professionalism exhibited by Cooperative Extension Agents and subject matter Specialists. Analysis of several trends suggests that the Cooperative Extension Service role in Wildlife Damage Control will increase in coming years. The movement of urban people into rural settings will create greater demands for wildlife damage control information. Likewise, the expansion of wildlife population into urban and suburban environments due …

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Wildlife Damage Control And The Wildlife Society, Thomas M. Franklin Sep 1985

Wildlife Damage Control And The Wildlife Society, Thomas M. Franklin

Eastern Wildlife Damage Control Conference: 2nd (1985)

Wildlife damage control is recognized by The Wildlife Society as an essential and responsible segment of the wildlife profession. At least since 1959, Society committees have addressed elements of wildlife damage control (although wildlife damage control was not always the specific term used). The Wildlife Society Council first approved an "Animal Damage Control" position statement in 1968. In March 1985, Council updated and renamed it "Wildlife Damage Control" to emphasize our positive approach to this important segment of wildlife management. The official position statement was published in The Wildlifer (May-June 1985) and is reprinted below.

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Usda Forest Service Role In Wildlife Damage Control, Hugh C. Black Sep 1985

Usda Forest Service Role In Wildlife Damage Control, Hugh C. Black

Eastern Wildlife Damage Control Conference: 2nd (1985)

Wildlife damage control is an important objective of resource management on the 191 million acres of National Forest System (NFS) lands administered by the USDA Forest Service. Policy on wildlife damage control is based on the USDA Policy on Fish and Wildlife (Secretary's Memorandum 9500-3, July 1983). The objective of wildlife damage control is to reduce damage and loss by wildlife on all NFS lands to levels consistent with management objectives. Control measures are only undertaken when and where necessary to realize wildlife management objectives and to prevent serious damage to public or private property and natural resources. Because of …

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Reformulated 4-Aminopyridine Baits Cost-Effectively Reduce Blackbird Damage To Ripening Cornfields, Jerome F. Besser, John W. Degrazio Sep 1985

Reformulated 4-Aminopyridine Baits Cost-Effectively Reduce Blackbird Damage To Ripening Cornfields, Jerome F. Besser, John W. Degrazio

Eastern Wildlife Damage Control Conference: 2nd (1985)

In 1984 4-aminopyridine baits, stabilized with hydrochloric acid, were appraised in ripening cornfields being attacked by blackbirds on the Sand Lake National Wildlife Refuge., South Dakota. In 1982, i t had been discovered that 4-aminopyridine, the active agent in commercial Avitrol® baits for crop protection rapidly vaporized at summer storage and field baiting temperatures.

In July, baiting lanes were created in 12 cornfields by destroying every 55th row. In August after a 3-day pretreatment period, fields were baited with Avitrol® FC Corn Chops-99 for a 2-week period when corn was most vulnerable to damage. Bait was applied from baiting lanes …

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Preparation And Analysis Of Alternative 4-Ap Baits For Blackbirds, J.E. Davis Sep 1985

Preparation And Analysis Of Alternative 4-Ap Baits For Blackbirds, J.E. Davis

Eastern Wildlife Damage Control Conference: 2nd (1985)

Red-winged blackbird (Agelaius phoeniceus) acceptance of corn as a bait for use in ripening sunflower has been questioned. This study demonstrated that sunflower meats, sunflower achenes, and pearled barley all have potential as alternative bait carriers for 4-AP. Each can be treated with 4-AP so that individual bait particles carry dosages equivalent to those of cracked corn in the registered product, Avitrol FC Corn Chops 99S. Treated baits produced a distress response in redwings in times ranging from 21.7 min (sunflower meats) to 64.5 min (sunflower achenes). The time to distress elicited by sunflower meats coated with 4-AP …

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The Whooping Crane Cross-Fostering Experiment: The Role Of Animal Damage Control, Roderick C. Drewien, Stephen H. Bouffard, Desmond D. Call, Richard A. Wonacott Sep 1985

The Whooping Crane Cross-Fostering Experiment: The Role Of Animal Damage Control, Roderick C. Drewien, Stephen H. Bouffard, Desmond D. Call, Richard A. Wonacott

Eastern Wildlife Damage Control Conference: 2nd (1985)

Predator losses of endangered species in reintroduction programs are unacceptable because of the scarcity of the species and the major commitment of staff time and funds. When the whooping crane (Grus americana) cross-fostering experiment (experiment) at Grays Lake National Wildlife Refuge (Grays Lake), Idaho was proposed in 1972, animal damage control (ADC) was considered unnecessary. Sandhill crane (G. canadensis tabida) nest success was high and coyotes (Canis latrans) and red foxes (Vulpes Vulpes) were uncommon. Canids increased by the mid-1970's destroying whooping crane eggs and chicks. An ADC program initiated in 1976 …

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Estimating Cost-Effectiveness Of Controlling Animal Damage To Conifer Seedlings, David S. Decalesta Sep 1985

Estimating Cost-Effectiveness Of Controlling Animal Damage To Conifer Seedlings, David S. Decalesta

Eastern Wildlife Damage Control Conference: 2nd (1985)

A model for determining the benefit-cost ratio of controlling damage by vertebrate pests to conifer seedlings requires knowledge of the amount, distribution, and duration of animal damage, reduction in damage associated with control, costs of control, methodology and value of trees at harvest. Because control costs occurring in the present must be compared with savings recovered decades later in the future, the model incorporates procedures for discounting or adjusting future monetary benefits into present net worth valuations,, The model allows forest managers to evaluate a wide range of damage costs and savings accruing from use of various control techniques. The …

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An Investigation Of Techniques Used To Discourage Rebuilding Of Beaver Dams Demolished By Explosives, James M. Dyer, Charles E. Rowell Sep 1985

An Investigation Of Techniques Used To Discourage Rebuilding Of Beaver Dams Demolished By Explosives, James M. Dyer, Charles E. Rowell

Eastern Wildlife Damage Control Conference: 2nd (1985)

One hundred seventeen beaver dams were partially or wholly demolished with explosives from April through August between 1982 and 1984. These dams were of two types; shallow water dams found in areas of flat terrain, and deep water dams found in major creek channels or in areas of hilly terrain. Following demolition, various treatments were applied to the dam sites to try to retard rebuilding. Our conclusions are that deep water dams can be removed more effectively than shallow water dams and that late summer removals were rebuilt less frequently than early and midsummer removals. Also, certain types of repellents …

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Public Tolerance Of A Suburban Deer Herd: Implications For Control, Daniel J. Decker, Thomas A. Gavin Sep 1985

Public Tolerance Of A Suburban Deer Herd: Implications For Control, Daniel J. Decker, Thomas A. Gavin

Eastern Wildlife Damage Control Conference: 2nd (1985)

Suburban deer populations have been increasing in the eastern U.S., resulting in deer-human conflicts that can not always be resolved by a traditional management approach., Professionals responsible for management of deer damage (herd control and extension education) need information on the extent and nature of deer damage in suburban situations. Attitudes of suburban residential property owners about wildlife in general and deer in particular must be identified so that control measures that are socially acceptable as well as biologically feasible can be formulated o People's tolerance of deer damage and their propensity for undertaking on-site preventive measures need to be …

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Current Status Of Deer Fencing In The Northeast, Mark R. Ellingwood, Jay B. Mcaninch, Michael J. Fargione Sep 1985

Current Status Of Deer Fencing In The Northeast, Mark R. Ellingwood, Jay B. Mcaninch, Michael J. Fargione

Eastern Wildlife Damage Control Conference: 2nd (1985)

The recent development of high tensile electric fencing for controlling deer damage has led to the installation of these fence designs throughout the Northeast. In May 1984. 55 surveys were sent to individuals in 10 states who were known to have recently constructed deer fences. Sixty-seven percent of the surveys were returned and a variety of fence-related data were generated. These include information on deer damage, a general description of fence designs being utilized, information concerning fence voltage, data on fence maintenance and several questions on fence performance, owner satisfaction, and the cost/benefits of deer damage control. The majority of …

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Birds In Hangars - A Messy Problem, Albert E. Bivings Iv Sep 1985

Birds In Hangars - A Messy Problem, Albert E. Bivings Iv

Eastern Wildlife Damage Control Conference: 2nd (1985)

Pest birds in hangars and similar man-made structures pose specific health hazards as well as nuisance and corrosion problems. While lethal control or a scaring program may be the best technique for some locations, neither address the long-term problem of the basic attractiveness of these structures to birds. The best long-term solution usually is to exclude the birds with permanently installed plastic or nylon netting. Several methods to accomplish this are discussed.

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Repellents For Rodents In Conservation-Tillage Agriculture, Ron J. Johnson Sep 1985

Repellents For Rodents In Conservation-Tillage Agriculture, Ron J. Johnson

Eastern Wildlife Damage Control Conference: 2nd (1985)

In response to a need for a safe and effective method of reducing rodent damage to newly planted corn in conservation-tillage fields, too chemicals, thiram (tetramethylthiuram disulfide) and methiocarb (3, 5-dimethyl 1-4-methylthio] phenol methylcarbamate), were coated on untreated seed corn for evaluation as repellents and agents for conditioned aversion, Results of field-enclosure and other studies indicate that 1.25% thiram by weight repels thirteen-lined ground squirrels and causes no phytotoxicity. Lower thiram rates tested (0.08, 0.4, 0.8%) were ineffective, Methiocarb rates of 2.5 and 5.0% repelled thirteen-lined ground squirrels, but these rates may significantly reduce corn stand counts under some conditions, …

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Management Implications Derived From Bird Damage Assessments In North Dakota Sunflower, Joseph L. Guarino, John L. Cummings Sep 1985

Management Implications Derived From Bird Damage Assessments In North Dakota Sunflower, Joseph L. Guarino, John L. Cummings

Eastern Wildlife Damage Control Conference: 2nd (1985)

The most recent estimate of blackbird damage to ripening sunflower (Helianthus annuus) in North Dakota in 1980 exceeded $6 million. Although less than 5% of the sunflower fields in the state received greater than 10% damage in each of four past survey years, as much as 50% of the total state-wide damage occurred in these fields. This loss can be combated with cost-effective control- Successful control requires timely action when blackbirds are in large concentrations. Frightening blackbirds from fields early in the damage season disperses damage and this can result in compensatory growth by sunflower, whereby yields at …

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Frontmatter And Contents Sep 1985

Frontmatter And Contents

Eastern Wildlife Damage Control Conference: 2nd (1985)

PROCEEDINGS OF THE SECOND EASTERN WILDILFE DAMAGE CONTROL CONFERENCE

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Dispersal Of A Heron-Egret Rookery, Douglas I. Hall Sep 1985

Dispersal Of A Heron-Egret Rookery, Douglas I. Hall

Eastern Wildlife Damage Control Conference: 2nd (1985)

A rookery composed of an estimated 10,000 herons and egrets (family: Ardeidae) located in Van Buren, Crawford County, Arkansas was successfully dispersed in the Spring of 1983. A diversified scaring program was planned and initiated prior to the onset of courtship display and nest building. The roost relocation was subsequently followed by habitat alteration procedures to make the 5-acre stand of primarily Eastern redcedar (Juniperus virginiana) unattractive as a future roosting site. Although no nesting occurred at the site in 1983, the lack of an early scaring program in the Spring of 1984 resulted in the uncleared portion …

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Removal Of Nesting Starlings With Drc-1339, Douglas I. Hall Sep 1985

Removal Of Nesting Starlings With Drc-1339, Douglas I. Hall

Eastern Wildlife Damage Control Conference: 2nd (1985)

DRC-1339-treated crickets (Gryllus sp.) were utilized in an attempt to remove starlings (Sturnus vulgaris) nesting and rearing young in the aircraft hangars at the Little Rock Air Center, Little Rock, Pulaski County, Arkansas. Bait ratio of 1 treated to 5 untreated crickets was used. They were placed under airport night lights where foraging birds naturally gathered to feed on insects attracted to these lights. Adult starlings consumed the crickets as well as fed them to their young. Lethal control was achieved on both age classes of bird. Field test results show promise for the development of a …

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Closing Remarks, F. Eugene Hester Sep 1985

Closing Remarks, F. Eugene Hester

Eastern Wildlife Damage Control Conference: 2nd (1985)

I am glad to be here to present the closing remarks before such a group of professionals who represent the many agencies and individuals who daily perform the delicate task of resolving animal damage conflicts. The segment of wildlife management that you represent is perhaps the most difficult to accomplish in view of existing public opinion and involvement.

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Comparisons Of Strychnine And Zinc Phosphide In Prairie Dog Control, H. Todd Holbrook, Robert M. Timm Sep 1985

Comparisons Of Strychnine And Zinc Phosphide In Prairie Dog Control, H. Todd Holbrook, Robert M. Timm

Eastern Wildlife Damage Control Conference: 2nd (1985)

Efficacy and safety are primary considerations in registration and use of toxicants for vertebrate pest control. Strychnine (0.5%) and zinc phosphide (2%) are currently registered by EPA for prairie dog control, but continued registration is uncertain. Two percent zinc phosphide bait has been suspected of producing lower and more erratic results than strychnine bait. In our study in western Nebraska in fall 1984, indices based on changes in burrow activity showed no difference in efficacy (P=0.66) or variability (P=0.7) of control for strychnine and zinc phosphide, however neither toxicant consistently gave effective control of blackballed prairie dogs. Costs for proper …

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Minimum Effective Level Of Methiocarb For Protecting Sprouting Rice In Louisiana From Blackbird Damage, N.R. Holler, P.W. Lefebvre, A. Wilson, R.E. Matteson, G.R. Gutknecht Sep 1985

Minimum Effective Level Of Methiocarb For Protecting Sprouting Rice In Louisiana From Blackbird Damage, N.R. Holler, P.W. Lefebvre, A. Wilson, R.E. Matteson, G.R. Gutknecht

Eastern Wildlife Damage Control Conference: 2nd (1985)

Blackbirds cause locally serious losses to rice. The Denver Wildlife Research Center, U. S. Fish and Wildlife Service, and the Rice Research Station, Louisiana State University Agricultural Center have been cooperating in tests to determine the efficacy of methiocarb seed treatments for protecting sprouting rice in Louisiana from blackbird damage. Results from four field tests (1980, 1982, 1983, and 1984) have shown that methiocarb provides good protection when applied to rice seed at the rate of 2.4 g and 1.25 g active ingredient (a.i.)/kg of rice seed (0.25 and 0.125%). Seed treated at 0.6 g a.i./kg appeared to be susceptible …

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State Funded Wildlife Damage Programs: The Wisconsin Experience, Scott E. Hygnstrom, Scott R. Craven Sep 1985

State Funded Wildlife Damage Programs: The Wisconsin Experience, Scott E. Hygnstrom, Scott R. Craven

Eastern Wildlife Damage Control Conference: 2nd (1985)

Wisconsin has a long tradition of involvement with wildlife damage and wildlife damage programs. It is one of less than a dozen states that presently has a program for wildlife damage. From 1931 to 1980, Wisconsin paid landowners for damage to crops caused by wildlife,. Now the focus of Wisconsin's wildlife damage program is on damage control and prevention through appropriate abatement techniques and wildlife population control. This paper will detail Wisconsin's experience with these approaches and will offer insight into improving state funded wildlife damage programs.

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Preventive Control Of Pest Rodents, Walter E. Howard Sep 1985

Preventive Control Of Pest Rodents, Walter E. Howard

Eastern Wildlife Damage Control Conference: 2nd (1985)

With "preventive control" of pest rodents, by using rodent bait boxes (stations) on a permanent basis, there is no longer any biological, ecological, or economic reason for rodent pests or health problems to occur in villages, cities, and intensively cultivated agricultural areas, but not pastures or forests. Such pest rodents can usually be eliminated without endangering non-target species, quite inexpensively, simply, and in a more environmentally desirable manner than most current practices, where the pest rodents are not controlled until populations have built up, which requires large amounts of rodenticides. With preventive control, once the pest rodents have been controlled …

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Role Of The U.S. Environmental Protection Agency In Wildife Damage Control, William W. Jacobs Sep 1985

Role Of The U.S. Environmental Protection Agency In Wildife Damage Control, William W. Jacobs

Eastern Wildlife Damage Control Conference: 2nd (1985)

The U.S. Environmental Protection Agency is the Federal agency in charge of pesticide registration,. Therefore, EPA has ultimate regulatory authority over the pesticide compounds used for wildlife damage control.

Pesticides are regulated under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)o Pesticides may be cleared for use in the United States under Sections 3, 5, 18, and 24(c) of FIFRA.

Section 3 contains provisions for full federal registration,. Products registered under Section 3 may be used throughout the country, subject to conditions and limitations of use specified on the product label and State requirements. To be registered under Section 3, …

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The Role Of The Indiana Division Of Fish And Wildlife In Wildlife Damage Control, Glenn Lange Sep 1985

The Role Of The Indiana Division Of Fish And Wildlife In Wildlife Damage Control, Glenn Lange

Eastern Wildlife Damage Control Conference: 2nd (1985)

As defined by state statue, the Division of Fish and Wildlife is responsible for the protection, reproduction, care, management, survival, and regulation of all wildlife populations. By law, the Division must take a leading role in solving wildlife damage problems when they occur.

In Indiana, wildlife damage or nuisance animal problems takes two forms: damage from individual birds or mammals that are in the wrong place at the wrong time (such as raccoons nesting in an attic) and damage from bird or mammal populations that have grown large enough to cause serious economic losses for agricultural, forestry, or other land …

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Assessing Deer Damage In Young Fruit Orchards, Jay B. Mcaninch, Mark R. Ellingwood, Michael J. Fargione, Peter Picone Sep 1985

Assessing Deer Damage In Young Fruit Orchards, Jay B. Mcaninch, Mark R. Ellingwood, Michael J. Fargione, Peter Picone

Eastern Wildlife Damage Control Conference: 2nd (1985)

Evaluations of systematic damage assessments of 5, 10 and 20 percent of all apple trees in 12 orchards were compared. The 10% assessment technique was selected as the most accurate and efficient in estimating summer and fall damage. Analysis of several parameters of tree vigor found significant differences between browsed and unbrowsed trees for tree basal diameter and central leader diameter over 2 successive years. These subtle yet important differences in tree development were felt to severely limit the possibilities of relating browsing to growth and. later, yields. Methods and considerations for making control decisions on a per acre basis …

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Animal Damage Control And The Endangered Species Act, Warren T. Parker Sep 1985

Animal Damage Control And The Endangered Species Act, Warren T. Parker

Eastern Wildlife Damage Control Conference: 2nd (1985)

The premise of the Endangered Species Act is that all wildlife are valuable natural resources and the extinction of species in the name of progress must be halted. To achieve this end, Congress requires all Federal agencies to consult with the Fish and Wildlife Service when any of their programs or projects affect a listed endangered or threatened species. Problems of special interest to this conference are those that project an endangered or threatened species indirect conflict with man.

Undoubtedly the most publicized of these conflicts has involved the threatened timber wolf and the livestock producers of northern Minnesota. This …

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Dispersing Blackbird-Starling Roosts With Helium-Filled Balloons, Donald F. Mott Sep 1985

Dispersing Blackbird-Starling Roosts With Helium-Filled Balloons, Donald F. Mott

Eastern Wildlife Damage Control Conference: 2nd (1985)

Large (120 cm diameter) helium-filled balloons (2-10 per ha of roost) tethered about 8 m above the vegetation were effective in dispersing blackbirds and starlings from roosting sites. Bird population estimates before, during, and after balloon exposure showed that the balloons frightened the birds and caused most of them to abandon the roost. Roosting bird numbers at each of 5 test roost sites (0.3 to 1.7 ha) were reduced an average of 82% (min-max 47-100%) during 3 to 4 evenings of balloon exposure. Winds >16 km/h during the study made it difficult to keep the balloons aloft and not entangled …

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Vole Control In The Eastern United States, Richard M. Poche, Robert Sharp Sep 1985

Vole Control In The Eastern United States, Richard M. Poche, Robert Sharp

Eastern Wildlife Damage Control Conference: 2nd (1985)

The meadow vole (Microtus pennsylvanicus) and pine vole (M. pinetorum) are major pests in fruit orchards in the eastern U.S. These species damage trees by gnawing the bark or root systems during the winter months, thus, reducing the fruit yields or in many cases actually killing the trees. Orchard owners generally use an integrated pest management approach involving a combination of methods: (1) cultural practices such as reducing favorable vole habitat, thereby, limiting the carrying capacity, (2) mechanical control through the use of tree guards or trapping techniques, and (3) the use of rodenticides, both acute …

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Landowner Tolerance Of Beavers: Implications For Damage Management And Control, Ken G. Purdy, Daniel J. Decker, Richard A. Malecki, John C. Proud Sep 1985

Landowner Tolerance Of Beavers: Implications For Damage Management And Control, Ken G. Purdy, Daniel J. Decker, Richard A. Malecki, John C. Proud

Eastern Wildlife Damage Control Conference: 2nd (1985)

Management of beaver (Castor canadensis) populations can be an effective way to create wetlands while at the same time producing a valued recreational and furbearer resource. Optimizing beaver populations for such a dual objective, however, requires careful integration of biological and sociological considerations in management planning. Knowledge of beaver population dynamics by itself is insufficient for sound management; human tolerance data also must be included in management decisions to reduce the potential of encountering problems that could impede the attainment of beaver-wetlands management objectives. Expansion of beaver into new areas often may be constrained by managers' perceptions of …

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