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Articles 1 - 30 of 79
Full-Text Articles in Physical Sciences and Mathematics
Flood Insurance Study, Federal Emergency Management Agency
Flood Insurance Study, Federal Emergency Management Agency
All U.S. Government Documents (Utah Regional Depository)
This Flood Insurance Study investigates the existence and severity of flood hazards in the City of Ogden, Weber County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study will be used to convert Ogden to the regular program of flood insurance by the Federal Emergency Management Agency. Local regional planners will use this study in their efforts to promote sound flood plain management. IN some states or communities, flood plain management criteria or regulations may exist that are more restrictive or comprehensive than those on …
Proceedings Of The Sixth Eastern Pine And Meadow Vole Symposium, March 10-12, 1982 (Complete Proceedings)
Eastern Pine and Meadow Vole Symposia
Entire symposium
Highlights of the Sixth Eastern Pine and Meadow Vole Symposium
The Sixth Eastern Pine and Meadow Vole Symposium was held at the Cliffside Inn, Box 786, Harpers Ferry, West Virginia 25425, March 10-12, 1982, for the purpose of assessing the current status of research, extension, and industry programs relating to the problem of vole damage to fruit trees. The meeting was intended to create a problem solving atmosphere in which growers; various governmental agencies such as EPA, USDA, USDI; the chemical industry; and university personnel could ob¬serve the current thrusts of research and extension programs and their potential …
The Relationship Of Nutritional Factors To Apple Tree Root Damage By Pine Voles, F. A. Servello, J. J. Hasbrouck, R. L. Kirkpatrick, K. E. Webb
The Relationship Of Nutritional Factors To Apple Tree Root Damage By Pine Voles, F. A. Servello, J. J. Hasbrouck, R. L. Kirkpatrick, K. E. Webb
Eastern Pine and Meadow Vole Symposia
Damage to apple tree roots by pine voles is believed to occur primarily during the winter months. Cengel et a1. (1978) found that the stomachs of pine voles contained significant amounts of root material only during January and March sampling periods. In addition, the diet of pine voles at that time consisted primarily of less preferred grass species because preferred forb species were unavailable. Therefore, apple tree roots may serve as a food source in the winter when preferred forages are unavailable. If, in fact, pine voles are consuming roots in response to reduced food supplies, then one would expect …
Effects Of Known Densities Of Pine Voles On Apple Trees, Milo Richmond, Pamela N. Miller
Effects Of Known Densities Of Pine Voles On Apple Trees, Milo Richmond, Pamela N. Miller
Eastern Pine and Meadow Vole Symposia
Damage to fruit trees, tree seedlings and a wide array of ornamental shrubs by microtine rodents remains a widespread problem in both Europe and North America. Careful studies that quantify the levels of damage caused by a known density of rodent pests are not available. For this reason the orchard manager. Pest Control Specialist, and the researcher have a difficult time making wise decisions that are based on solid economic data.
There are several reasons for this lack of knowledge. The damage done to apple trees is not easily observed, described, or measured. There is probably not a simple linear …
Rodenticide Evaluation In The Hudson Valley During 1980 And 1981, Paul F. Steblein, Milo E. Richmond
Rodenticide Evaluation In The Hudson Valley During 1980 And 1981, Paul F. Steblein, Milo E. Richmond
Eastern Pine and Meadow Vole Symposia
The objective of Cornell University's research program is to develop a successful integrated system to control pine and meadow vole damage in the apple orchards of the Hudson Valley. This is being accomplished by determining the effect of habitat manipulation and rodenticides on vole populations. We are also doing research to quantify the amount of damage apple trees sustain from various densities of pine voles. By coupling the results of these two avenues of research, we hope to provide growers with a cost-effective pest management plan. Efficacy of Chlorophacinone (Chempar, Inc.) and Brodificoum (ICI Americas, Inc.) in various populations and …
Orchard Rodent Baits: Toxicant Evaluations And Vole Pellet Size Preferences, Mark H. Merson, Ross E. Byers
Orchard Rodent Baits: Toxicant Evaluations And Vole Pellet Size Preferences, Mark H. Merson, Ross E. Byers
Eastern Pine and Meadow Vole Symposia
Residues of the anticoagulant rodenticide Brodifacoum in meadow voles (Microtus pennsylvanicus) sampled from an orchard popula¬tion after broadcast treatment with the commercial bait VOLID decreased as the orchard rate of application and concentration of Brodifacoum in the bait decreased. Oral LD— determinations for the experimental rodenticide EL-614 were 8.8 mg/kg for meadow voles and 24.0 mg/kg for pine voles (M. pinetorum) . No size preference by meadow and pine voles for bait pellets from 2.38 to 4.76 mm in diameter was observed in lab¬oratory tests.
Radiotelemetric Evaluation Of The Effect Of Horticultural Practices On Pine And Meadow Voles In Apple Orchards: Ii. Herbicide Application, Dale M. Madison, Ralph E. Pagano, Randall W. Fitzgerald
Radiotelemetric Evaluation Of The Effect Of Horticultural Practices On Pine And Meadow Voles In Apple Orchards: Ii. Herbicide Application, Dale M. Madison, Ralph E. Pagano, Randall W. Fitzgerald
Eastern Pine and Meadow Vole Symposia
Pine voles (Microtus pinetorum) and meadow voles (Microtus pennsylvanicus) were studied in a commercial apple orchard in the Hudson Valley of New York during April and May 1981. Selected voles were given miniature radio transmitters and then tracked before and after herbicide application. A total of eight pine and meadow voles were tracked throughout the experimental period. Home range size decreased on the day following herbicide application but showed an increase from day 1 to day 5 & 7 after application. Movements away from the tree line into the aisles did not change significantly after herbicide …
Habitat Utilization And Spacing Patterns Of Pine And Meadow Voles, J. A. Cranford, T. L. Derting
Habitat Utilization And Spacing Patterns Of Pine And Meadow Voles, J. A. Cranford, T. L. Derting
Eastern Pine and Meadow Vole Symposia
Pine voles (Microtus pinetorum) and meadow voles (M. pennsylvanicus) co-occur in orchards but may exhibit mutual avoidance through temporal or spatial isolation. Though pine and meadow voles have exhibited overlapping home ranges, individuals of the two species seldom occupy the same 2m area at the same time (Pagano & Madison, 1981). Differences in habitat use by pine and meadow voles may contribute to their spatial separation in orchards. McAnich (1979) found a weak relationship between meadow vole numbers and soil compaction, soil moisture, thatch depth, and light intensity and no relationship between meadow vole occurrence and …
Selected Habitat Characteristics And Pine Vole Abundance In Pennsylvania Apple Orchards, J. R. Parker, G. M. Kelly, W. M. Tzilkowski
Selected Habitat Characteristics And Pine Vole Abundance In Pennsylvania Apple Orchards, J. R. Parker, G. M. Kelly, W. M. Tzilkowski
Eastern Pine and Meadow Vole Symposia
In the past, researchers from The Pennsylvania State University have Investigated specific aspects of the pine vole (Microtus pinetorum) and its biology (Fisher 1976, Gettle 1975, Simpson 1978). In our current research, we are Investigating many factors of the pine vole's orchard habitat and examining these factors collectively. Our objectives are:
1) To determine what combinations of habitat characteristics relate best to abundance of pine voles in Pennsylvania apple orchards.
2) To recommend strategies on how to consider or modify those habitat characteristics to maintain the lowest possible numbers of pine voles.
A Current Assessment Of Vole Damage And Numbers And Of Methods Used To Control Voles In Ontario Apple Orchards, Ronald J. Brooks, Stephen A. Struger
A Current Assessment Of Vole Damage And Numbers And Of Methods Used To Control Voles In Ontario Apple Orchards, Ronald J. Brooks, Stephen A. Struger
Eastern Pine and Meadow Vole Symposia
A province-wide evaluation of the amount, distribution, source and control of damage to Ontario apple trees was initiated. Data we re obtained from 280 responses to a questionnaire distributed to growers across Ontario, and from trap censuses in three widely separated areas. Meadow voles (Microtus pennsylvanicus) damaged or destroyed 8,423 trees in our questionnaire sample and other mammals damaged another 10,307 trees. No relationship was found between application of rodenticide and levels of damage, but rodenticide-treated baits sharply reduced numbers of voles on our trap plots. Orchards with high levels of damage were on average only one-third as …
Long Term Vole Control In Ontario Apple Orchards, Zia Siddiqi, W. D. Blaine
Long Term Vole Control In Ontario Apple Orchards, Zia Siddiqi, W. D. Blaine
Eastern Pine and Meadow Vole Symposia
A poisoned bait feeder station is being evaluated for a long term meadow vole control in Ontario apple orchards. This bait station can maintain a bait supply even under deep winter snow cover, commonly experienced in Ontario, when voles inflict extensive tree damage. Latest generation of acute anticoagulants, encapsulated zinc phosphide, and commercial formulation of zinc phosphide treated cracked corn bait in the bait stations are evaluated against the conventional broadcast application of the zinc phosphide treated cracked corn.
Effect Of Pellet Size And Packaged Commercial Baits For The Control Of Pine Voles, Ross E. Byers, Mark H. Merson
Effect Of Pellet Size And Packaged Commercial Baits For The Control Of Pine Voles, Ross E. Byers, Mark H. Merson
Eastern Pine and Meadow Vole Symposia
No difference in field control of pine voles was found be¬tween 3 different pellet sizes broadcast at either 5.6 kg/ha (5 lbs/.p acre) or 11.2 kg/ha (10 lbs/acre) for either Volid or ZP Rodent Bait . Comparison of the 18 Volid plots with the 18 ZP Rodent Bait plots showed a statistical difference in animal control between these materials of 95% and 85% respectively. Place packs of Volid or ZP Rodent Bait were opened at approximately 95% of the active sites. Since about 5% of the sites were active by the apple indexing, we believe a low but residual population …
Potential Use Of Barn Owls To Control Vole Populations In Orchards, T. L. Derting, Jack A. Cranford
Potential Use Of Barn Owls To Control Vole Populations In Orchards, T. L. Derting, Jack A. Cranford
Eastern Pine and Meadow Vole Symposia
The development of control methods for pine and meadow voles in orchard habitats has met with limited success. Though numerous physical, mechanical, and chemical methods have been recommended for limiting vole populations, few have effectively reduced and maintained vole populations at minimal densities for extended periods of time. Though the use of chemicals has been the most effective control method developed it has not resulted in the extinction of pest populations. The initial application of rodenticides frequently causes a significant reduction in pest species, but due to their high intrinsic rate of increase, vole densities quickly rise. Because of high …
Pine Vole Reinvasion Of An Unfilled Suitable Habitat, Pamela N. Miller, Milo E. Richmond
Pine Vole Reinvasion Of An Unfilled Suitable Habitat, Pamela N. Miller, Milo E. Richmond
Eastern Pine and Meadow Vole Symposia
Despite years of research aimed at developing ecologically safe and effective methods for controlling pine voles these rodents remain a serious agricultural pest. A large portion of the damage occurring yearly could be avoided through close adherence to the current recommendations. A regular mowing and herbicide program to eliminate rodent cover combined with rodenticides comprise the integrated pest management program currently available. Effective toxicants include a ground spray and various pelleted baits which can be placed in the runways. Repeated mowing of grasses and the use of herbicides are two effective means of reducing or eliminating an existing population, and …
Status Of Winter Populations Of Pine Voles (Microtus Pinetorum, Philip O. Renzullo, Milo E. Richmond
Status Of Winter Populations Of Pine Voles (Microtus Pinetorum, Philip O. Renzullo, Milo E. Richmond
Eastern Pine and Meadow Vole Symposia
Knowledge of the spatial and temporal organization of free ranging animal populations is important to an understanding not only of the social behavior between members of those populations, but also of several demographic parameters of the population, including reproduction, dispersal and mortality. Such information is particularly important when viewed in the context of pest species management. The efficacy of control practices such as rodenticide application and habitat manipulation might be greatly enhanced if performed with an understanding of the organization and status of pest populations in mind.
Early considerations of pine vole (Microtus pinetorum) spatial and temporal organization were based …
Influence Of Photoperiod And Nutrition On Food Composition, Body Condition And Reproduction In The Pine Vole, J. J. Hasbrouck, A. R. Tipton, R. L. Kirkpatrick, Jack A. Cranford
Influence Of Photoperiod And Nutrition On Food Composition, Body Condition And Reproduction In The Pine Vole, J. J. Hasbrouck, A. R. Tipton, R. L. Kirkpatrick, Jack A. Cranford
Eastern Pine and Meadow Vole Symposia
Previous field studies in Virginia reported a longer breeding sea¬son in pine voles in maintained apple orchards than in abandoned orchards and attributed the difference to nutrition (Cengel et at. 1978, Noffsinger 1976). The maintained orchard was theorized to have better quantity and quality of forage in fall due to mowing, fertilizing and the presence of apple drops. Hasbrouck et a1. (1981) found adult male pine voles snap-trapped in November and December in an orchard where apples were present had significantly heavier reproductive organs and higher spermatozoa counts than those trapped in an area of the orchard where apples had …
A Preliminary Survey Of Genetic Variation Over Two Seasons Among Orchard Pine Vole Populations, J. E. Mcbride, J. J. Ney, A. R. Tipton, R. L. Kirkpatrick
A Preliminary Survey Of Genetic Variation Over Two Seasons Among Orchard Pine Vole Populations, J. E. Mcbride, J. J. Ney, A. R. Tipton, R. L. Kirkpatrick
Eastern Pine and Meadow Vole Symposia
The objective of this study was to test for genetic homogeneity among several discontinuous orchard pine vole populations, particularly between those that had been treated with endrin and those that had not. Endrin-resistant pine vole strains have been documented (Webb and Hors-fall 1967; Webb et a1. 1973), but have not been characterized genetically. Practically, this study was designed to determine if genetic differences existed among endrin-treated and non-treated orchard populations over two seasons of the year, by examining a few specific gene loci believed to be involved in endrin metabolism in small mammals.
Radiotelemetric Evaluation Of The Effect Of Horticultural Practices On Pine And Meadow Voles In Apple Orchards: Iii. Use Of Orchard Border Habitats By Meadow Voles, Ralph E. Pagano, Dale M. Madison
Radiotelemetric Evaluation Of The Effect Of Horticultural Practices On Pine And Meadow Voles In Apple Orchards: Iii. Use Of Orchard Border Habitats By Meadow Voles, Ralph E. Pagano, Dale M. Madison
Eastern Pine and Meadow Vole Symposia
A study was undertaken to determine if meadow voles,Microtus pennsylvanicus, use habitats adjacent to apple orchards. Considerations were given to how extensively these areas were used, if at all, and if a bulldozed strip would control their movements between the orchard and adjacent border habitats. Trapping and telemetry data showed that meadow voles do use the adjacent border habitats extensively and make frequent crossings between these areas and the nearby or¬chards. It would seem, therefore, important to include these areas in any vole management program. Although the bulldozed strip was effective in reducing movements between the orchard and adjacent …
Ecological Requirements Of Pine And Meadow Voles In New England Orchards, Alan J. Steiner
Ecological Requirements Of Pine And Meadow Voles In New England Orchards, Alan J. Steiner
Eastern Pine and Meadow Vole Symposia
With increased concern over the effects of pesticides on ecosystems end non-target species, the use of many toxic materials has either been banned or severely restricted. Consequently, a more ecological approach to vole damage is necessary to develop sounder methods of control. Distribution of pine voles (Microtus pinetorum), both seasonally end geographically, indicates that this species is not readily adaptable to 8 wide range of habitat types or conditions. If there are certain factors limiting the occurrence end abundance of pine voles, end they can be detected, we may be able to exploit this knowledge to adversely affect …
Progress Of A Bioenergetic Simulator Of Pine Vole Populations, K. C. Jordan, A. R. Tipton, R. L. Kirkpatrick
Progress Of A Bioenergetic Simulator Of Pine Vole Populations, K. C. Jordan, A. R. Tipton, R. L. Kirkpatrick
Eastern Pine and Meadow Vole Symposia
The pine vole research effort under way at VPI & SU has involved 4 parts: an investigation of nutrition and energetics, a study of habitat and behavior, an evaluation of chemical control, and the development of a computer simulation model of population dynamics. Coyle et a1. (1981) reported on the results of a preliminary model developed by Coyle (1980), and outlined a second stage model to incorporate his (1980) recommendations and the continually expanding base of field and laboratory data. The preliminary model was a demographic simulator mechanistically driven by bioenergetic equations developed chiefly from laboratory studies at Virginia Tech. …
Water Metabolism In Laboratory-Maintained And Free-Ranging Pine Voles (Microtus Pinetorum), D. Rhodes, M. E. Richmond
Water Metabolism In Laboratory-Maintained And Free-Ranging Pine Voles (Microtus Pinetorum), D. Rhodes, M. E. Richmond
Eastern Pine and Meadow Vole Symposia
Prior study of water use by the pine vole, Microtus pinetorum, has indicated that these voles require large volumes of water on a daily basis and exhibit rapid turnover of body water relative to other mammals of similar body size (Rhodes and Richmond, 1981). However, the extent to which these animals are tolerant of water deprivation and hence the importance of available water to the members of this species remains unexplored. Similarly, data on rates of body water turnover in free-ranging pine voles are presently unavailable. Thus, this study examines rates of body water turnover and urine concentrations of …
Effect Of Green Vegetation And Cotton Nest Material On Reproduction And Survival Of Pine Voles (Microtus Pinetorum), Jack A. Cranford
Effect Of Green Vegetation And Cotton Nest Material On Reproduction And Survival Of Pine Voles (Microtus Pinetorum), Jack A. Cranford
Eastern Pine and Meadow Vole Symposia
Plant compounds associated with active plant growth and senescence have been reported to have different effects on microtine reproduction (Berger et al., 1977, 1981). Biological assays of inhibitory compounds showed some effect at pharmacological doses in Microtus pennsylvanicus but not in M. pinetorum (Cranford et al., 1980; Derting and Cranford, 1981). Stimulatory plant compounds contained in active growing wheat have been demonstrated to cause early sexual maturation (Berger et al., 1981) and to induce reproduction in wild populations during non reproductive periods (Negus, 1977; Berger et al., 1981). Bodenheimer (1949) postulated that plants contain compounds which trigger the onset of …
Strange Males Block Pregnancy In Lactating Pine Voles, Microtus Pinetorum, And Reduce Survival And Growth Of Nursing Young, Margaret H. Schadler
Strange Males Block Pregnancy In Lactating Pine Voles, Microtus Pinetorum, And Reduce Survival And Growth Of Nursing Young, Margaret H. Schadler
Eastern Pine and Meadow Vole Symposia
Strange (unfamiliar) males affect survival of progeny of reproductive female rodents in a variety of ways. In mice, strange males block pregnancy before implantation of embryos (Bruce, 1959) but only in females that are not lactating (Bruce and Parkes, 1961). In voles these males can block pregnancy both before and after implantation (Stehn and Richmond, 1975; Marks and Schadler, 1979; Schadler, 1981). Strange males have also been shown to kill nursing pups in lemmings (Mallory and Brooks, 1978) and mice (Labov, 1980 and vom Saal and Howard, 1982).
The present study in pine voles (Microtus pinetorum) examines the …
A Comparison Of Maternal Behavior In Three Species Of Voles (Microtus Pennsylvania, M. Pinetorum, And M. Ochrogaster) Using A Laboratory System, B. A. Mcguire, M. A. Novak
A Comparison Of Maternal Behavior In Three Species Of Voles (Microtus Pennsylvania, M. Pinetorum, And M. Ochrogaster) Using A Laboratory System, B. A. Mcguire, M. A. Novak
Eastern Pine and Meadow Vole Symposia
A system has been developed to describe and compare the maternal behavior of three species of microtine rodents within a naturalistic environment. The apparatus consists of two Interconnected Plexiglas-based tables with a peat substrate and hay cover. A pregnant female and her mate are placed within the tables, once the female has shown a thirty percent weight gain and pups can be felt by palpating her abdomen. Maternal behavior, as well as male-female interactions and information on pup physical and behavioral development, are recorded daily for twenty-five days immediately following parturition. Unrestricted observation of female behavior during neonatal, pre-weaning and …
Proceedings Of The Sixth Eastern Pine And Meadow Vole Symposium, Harpers Ferry, Wv (Covers, Frontmatter, Contents)
Eastern Pine and Meadow Vole Symposia
Frontmatter
Demographic Analysis Of Pine Vole Populations In Two Orchard Types In Southwest Virginia, J. J. Hasbrouck, A. R. Tipton, S. B. Lindquist
Demographic Analysis Of Pine Vole Populations In Two Orchard Types In Southwest Virginia, J. J. Hasbrouck, A. R. Tipton, S. B. Lindquist
Eastern Pine and Meadow Vole Symposia
Few long term studies have been conducted to analyze the population dynamics of pine and meadow voles in orchard environments. Such studies are needed to provide basic biological information for use in orchard management and vole control programs. To satisfy these needs, a three year study was begun in December, 1979, to monitor vole populations in a maintained and an abandoned apple orchard in Southwest Virginia. Two objectives of this study were (1) to follow population dynamics of pine and meadow voles in two orchard types and (2) to provide data for the development and validation of computer modeling efforts …
1982 Vole Symposium West Virginia Orchard Tour, Roger S. Young
1982 Vole Symposium West Virginia Orchard Tour, Roger S. Young
Eastern Pine and Meadow Vole Symposia
Warm Springs Orchard - Robert W. Butler
Swan Pond Orchard - William Kilmer
Lewis Brother Orchard - Charles and Otho Lewis
The Red Eyed Turtle Dove (Streptopelia Semitorquata) As An Agricultural Pest In Nigeria, Modupe Akande
The Red Eyed Turtle Dove (Streptopelia Semitorquata) As An Agricultural Pest In Nigeria, Modupe Akande
Proceedings of the Tenth Vertebrate Pest Conference (1982)
Preliminary results compiled from visual observations and questionnaires indicated that a large variety of crops including soyabean, cowpea, groundnut, maize, rice, sorghum were attacked at planting and seedling stages of growth by the red-eyed turtle dove (Streptopelia semitorquata). The social conditions under which this bird is protected, by social taboos and also as an attractive and common household pet in many parts of Nigeria, limit the control options that could be used to stop its deleterious activities. In the meantime research efforts are being directed to the understanding of the population ecology and biology of the species as a prerequisite …
Predator Problems When Using Sheep And Goats In Managing Brush On Rangelands, James E. Bowns
Predator Problems When Using Sheep And Goats In Managing Brush On Rangelands, James E. Bowns
Proceedings of the Tenth Vertebrate Pest Conference (1982)
Rangelands occupy a large portion of the western United States and the world. Grazing by ruminant animals provides the only means of obtaining usable products from these lands. Sheep and goats are more efficient producers, better adapted to many ranges, and are useful in controlling or manipulating shrubs and other undesirable vegetation which results in improved range conditions and increased water yields. There has been a general decline in sheep and goat numbers and a shift toward cattle. Predation has been a major factor in the abandonment of many sheep and goat operations and the shift to other livestock. A …