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Coyote-Food Base Relationships In Jackson Hole, Wyoming, John L. Weaver

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I measured three variables of coyote-food base relationships in Jackson Hole, Wyoming, during the period July, 1973, to July, 1975. Field work provided estimates of relative coyote and prey abundance as well as observations on coyote feeding behavior during winter. Laboratory analysis of 1,500 coyote scats revealed feeding patterns while feeding trials with captive coyotes allowed refinement in interpretation of scat analysis.

Deer mice and chipmunks comprised most of the rodent biomass captured in traps in the fall, while ground squirrels accounted for much of the rodent biomass in the spring. Field voles declined from 1973 to 1974 throughout much …

Rodent Density And Species Composition In The Snake River Birds Of Prey Natural Area, Idaho, Jon R. Montan Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rodent densities were estimated in the major vegetation types of the Snake River Birds of Prey Natural Area in 1975 and 1976 by a combination of live-trapping and kill-trapping. Only deer mice (Peromyscus maniculatus) were numerous enough to permit reliable density estimates. Relative densities of other rodent species were indicated by kill-trap capture rates. Densities of deer mice correlated well (r = 0.99) with kill-trap capture rates. The use of kill-trapping in place of live-trapping in 1976 permitted extensive sampling throughout the 1930 km² study area. Differences were found among the major vegetation and land-use types in …

Biological Manipulation Of Blackbrush (Coleogyne Ramosissima Torr.) By Browsing With Goats, Frederick D. Provenza

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to provide data on responses of Angora goats and blackbrush (Coleogyne ramosissima) to a biological manipulation program. Blackbrush utilization levels averaged 30, 16, and 6 percent (545, 367, and 147 kg per hectare) for the heavily, moderately, and lightly browsed pastures, respectively; removal rates of 77, 38, and 19 percent (1164, 582, and 291 kg per hectare) were projected.

Statistically significant differences in body weight loss (P=0.052) were noted for goats browsing in different replications. Goats lost an average of 14 and 19 percent of body weight in replications one and two, …

West Africa (East Central Atlantic) As A Regional Base For Fisheries Management, Conservation And Research: And Pollution Control, Vincent F. Adebolu

Marine Affairs Theses and Major Papers

About two decades ago when the First Law of the Sea Conference was underway, little attention was paid to ocean management. By then all of the ocean space apart from narrow bands of coastal waters was broadly recognized as the High Seas which is open to use by all countries. But despite this concept of free open use, only the major maritime powers were actually interested in maximizing the freedom of the seas principle. During this period there were only ninety independent coastal and landlocked states.

An Epornitic Of Avian Cholera In Waterfowl And Common Crows In Phelps County, Nebraska, In The Spring, 1975, Joseph Zinkl, Norm Dey, Joseph Hyland, James Hurt, Kenneth Heddleston

Nebraska Game and Parks Commission: Staff Research Publications

In the spring of 1975, many species of waterfowl and common crows (Corvus brachyrhynchos) were found dead in Phelps County, Nebraska. About 25,000 waterfowl and at least 3,000 crows died in the epornitic. Few waterfowl were seen dying, but the crows experienced a chronic illness during which they became debilitated and were lethargic and dyspneic. Gross and microscopic lesions in the waterfowl were typical for acute avian cholera. The crows had dank, firm areas within the lungs, a loosely adhered yellow fibrous material in the pericardial sac and air sacs and, occasionally, liver abscesses. Microscopically, focal punulent pneumonia …

Suspended And Dissolved Solids Effects On Freshwater Biota: A Review, Darwin L. Sorensen, Margaret M. Mccarthy, E. Joe Middlebrooks, Donald B. Porcella

Reports

It is widely recognized that suspended and dissolved solids in lakes, rivers, streams, and reservoirs affect water quality. In this report the research needs appropriate to setting freshwater quality criteria or standards for suspeneded solids (not including bedload) and dissolveed solids are defined by determining the state of our knowledge from a critical review of the recent literature in this field. Common literature sources and computer searching routines were used as an initial source of information followed by detailed journal searches. Although some 185 journal articles, government reports, and other referecnes were cited herein (about 45 percent publicshed since 1974) …

Comments On The Pine Vole In Orchards And Its Control, J. G. Barrat

Eastern Pine and Meadow Vole Symposia

There are many present orchard problems, most of them seasonal in nature, but few cause the serious losses that extensive vole injury does. Voles do their damage by feeding on the bark of the roots and at the crown of the trunk causing partial or complete girdling which weakens or kills the tree. Vole damage is feared because it means the loss of a tree or a group of trees as a maximum producing unit which takes several years to replace. Partially girdled trees may survive for years with low production. The lack of mouse control is often blamed on …

Pine Vole Control Research In Virginia, Ross E. Byers

Eastern Pine and Meadow Vole Symposia

A number of anticoagulant baits were found to be effective for the control of pine voles in apple orchards. The more toxic and acute the anticoagulant bait, the more effective the compounds appeared to be in field trials. A single 10 lb/A application of ICI 581, LM 637, and CPN gave excellent control in 1976 trials. Apple baits of ICI 581 and RH 787 also performed very well as a single 10 lb or 5 lb application per acre, respectively. Endrin applied to an orchard with a history of 10 years or more of annual applications did not control the …

Survival Rates Of Pine Voles In North Carolina Orchards, Don W. Hayne

Eastern Pine and Meadow Vole Symposia

There are a number of definitions of control of a pest. One of the competing definitions, and probably the most common even if not accepted in advanced circles, is to kill off the pest. Translated, this says: to increase the mortality rate, preferably to an extreme degree. I am going to talk here about survival rates. A survival rate is just the complement of the mortality rate - if survival is 80 percent, then mortality is 20 percent. It happens to be more generally useful in studying populations to deal with survival rates, so I hope I may be excused …

Registration Of Pesticides By Epa Section 3, Daniel B. Peacock

Eastern Pine and Meadow Vole Symposia

Section 3 Regulations of FIFRA, published July 3, 1975 (40FR28267), require the submission of chemistry, toxicology, and efficacy data for registration. The EPA uses these data to determine if a product, when used according to label directions, is effective for the purpose claimed without causing unreasonable effects on man or the environment. Described below are the basic types of data required.

Epa Registration Requirements For Orchard Rodenticides And The Manufacturer's Development Conslderations, D. L. Peardon

Eastern Pine and Meadow Vole Symposia

Data requirements for the registration of pesticides in the United States, and other countries, have been increasing steadily over the past 25 years. Requirements have increased fastest during the past 5 years.

The Role Of The Fish And Wildlife Service Research In Solving The Eastern Pine Vole/Orchard Problem, Richard N. Smith

Eastern Pine and Meadow Vole Symposia

Many orchardists, nurserymen and Christmas tree grcwers, State extension agents, and a few Fish and Wildlife Service people are aware of the economic problems that pine voles (microtus pinetorum) cause to orchards in the Appalachian Regions of the United States. This is expected for these people have had to deal first hand with economic losses caused by these small mammals. What is unusual and somewhat discouraging is that this problem was identified over forty years ago and that we really know little more about this animal now than we did then.

A Matter Of Survival, S. Pitchon

Eastern Pine and Meadow Vole Symposia

Session V of the program calls for "Chemical Industry Positions on Economics of Rodenticides". I will attempt to describe some of the problems that industry faces in registering pesticides and how they affect the cost and delay registration.

Some Pine Vole Movement Patterns In Several Apple Orchards In Henderson County, North Carolina, William T. Sullivan

Eastern Pine and Meadow Vole Symposia

In controlling pine voles in orchards a question often comes up about the distance the voles will move from outside into an orchard where the resident animals have been removed by a control program. There are several possible ways to study this, but at present the closest we can come to an answer is to see how far animals move in live-trapping studies. Naturalists have raised many questions about how to interpret these observations of trapped animals. For example, maybe movements are farther or more frequent into areas which have no resident animals or perhaps the animals that move in …

Pine Voles (Pitymys Pinetorum) And Orchard Damage Research: An Overview Of The N.Y. Coop Wildlife Research Program In Animal Damage, Milo Richmond, Robert Stehn, Mary Dunlay

Eastern Pine and Meadow Vole Symposia

We began our research effort in 1968 with a project aimed at determining the efficacy of endrin treatment for pine vole control. Grower concerns and a small amount of laboratory data indicated that endrin was no longer as reliable in controlling pine voles as it was in the early sixties. Our initial efforts were twofold. We sought first to determine the existing efficacy of endrin and secondly to evaluate any resistance by pine voles to this chemical control procedure. Unfortunately, this entire endrin research effort was dropped by the Cooperative Research Unit when endrin as well as other persistent chlorinated …

Control Of Microtus In Two Damage Situations, Andrew Radvanyi

Eastern Pine and Meadow Vole Symposia

In Canada the potential exists of over a million dollars girdling damage loss per year caused by small mammals to fruit trees in each of the four major orchard areas of British Columbia, Ontario, Quebec and Nova Scotia. Such annual losses continue to occur despite the existence of methods developed which could largely eliminate a large percentage of such losses at a fraction of the costs currently being spent on attempts to control small mammal populations (primarily meadow voles (Microtus pennsylvanicus) in orchard situations. In this paper I propose to outline briefly the developmental studies conducted by the …

"Mouse-Ateria" - A Bait Station For Rodents, Bruce Porterfield, Henry J. Eavis

Eastern Pine and Meadow Vole Symposia

In 1918 the first device of this kind was designed near Winchester, Virginia. In 1973 we introduced a high strength Styrene plastic version of it, copied from the hand-blown glass model.

Remarks To Be Presented At The First Eastern Pine And Meadow Vole Symposium, Merle H. Markley

Eastern Pine and Meadow Vole Symposia

A Rebuttable Presumption Against Reregistration has been issued against endrin. It is my own opinion that: First endrin should be critically examined, use by use, with respect to effectiveness and alleged hazard to non-target animals, be they pets, domestic stock or wildlife; and secondly, that a careful and complete review be made of all economic benefits against the hazards identified in the earlier review. The notice which appeared in the Federal Register emphasized the occasional harmful aspects of use and failed to give much or any credence to benefits. Certainly there must be some value to the grower and financial …

Water Current, Volume 9, No. 2, March/April 1977

Water Current Newsletter

NWRC Research Overview
Exon Creates Drought Task Force
Kremer Suggest Comprehensive Water Code
Department of Interior Appointees
Review of Water Resources Projects Initiated
OWRT Urges Restoration of Water Science Money
Northern Plains Groundwater Tests Encouraging
Automation Helps Water Chemists Keep Up with New Pollutants
Research Review: Herbicide Transport in Soil Under Center Pivot Irrigation Systems

Natural Areas Preservation In Arkansas, Mina Austin Marsh

Journal of the Arkansas Academy of Science

No abstract provided.

U.S.D.A.- Forest Service Environmental Statement: Salt Lake Planning Unit Proposed Land Management Plan, U.S. Department Of Agriculture

Elusive Documents

No abstract provided.

Ecosym-Regolith Classification, Jerome V. Degraff, Robert Q. Oaks, Jan A. Henderson

Progress reports

No abstract provided.

Fisheries Report No 28 - The Western Rock Lobster Fishery 1974-1975, G. R. Morgan, E H. Barker

Fisheries Research Reports

The fishery for the western rock lobster Panultrus eygnus is one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably stable …

Hydrology And Water Quality In The Central Kentucky Karst: Phase 1, James F. Quinlan, Donald R. Rowe

KWRRI Research Reports

Study of springs and cave streams has shown that heavy metal-rich effluent from a wastewater treatment plant can be traced to Hidden River Cave (beneath the city of Horse Cave) and thence 4 to 5 miles north to a group of 39 springs at 14 locations along a 5-mile reach of Green River. Nickel, chromium, copper and zinc in these effluent-bearing springs are in concentrations of as much as 30 times greater than other springs upstream and downstream from this reach, 20 times greater than the Green River, and 60 times greater than in shallow domestic wells between Horse Cave …

Fisheries Report No 20 - Trawl Caught Fish And Crustaceans From Cockburn Sound, J. W. Penn

Fisheries Research Reports

Cockburn Sound is one of the few sheltered embayments near the Perth metropolitan area and as such has been subjected to increasing usage by both the general public and industry. Historically the Sound has been a major commercial fishing area from which much of the fresh fish for the metropolitan area has been caught. More recently, as well as providing a significant commercial catch, a major sport fishery has developed in the area.

The first commercial trawling operations in Cockburn Sound were undertaken in the early part of this century when horses were used to tow small nets on the …

Teacher's Guide Planning A 6th Grade Outdoor Education Program For Your School, William Arnold Muench

Theses Digitization Project

No abstract provided.

Fisheries Report No 31 - Pecten Scallop Survey On Southern Geographe Bay, September 1976, D. I. Heald

Fisheries Research Reports

Reports of Pecten scallops in Geographe Bay in late 1975 were followed up by a preliminary stock survey in February 1976 using 1.22 m dredges and by a more extensive survey in September 1976 using 1.22 m and 2.25 m scallop dredges and a 0.5 m* Baird grab. Two very limited concentrations of scallops were located adjacent to rough ground. The best dredge catch rates were equivalent to 44 kg per hour per standard haul and the maximum grab catch was equivalent to a density of six scallops per square metre. The extremely rough terrain resulted in considerable damage to …

Fisheries Report No 27 - A Survey Of Recreational Usage Of South Coastal Estuaries Of Western Australia, N. Caputi, R C.J. Lenanton

Fisheries Research Reports

Over recent years, factors such as the State's population increase, a generally higher standard of living which enables people to have more leisure time, and better roads, particularly from the Eastern States of Australia, have all contributed towards an increase in the general recreational usage of the Western Australian south coast estuaries.

To aid proper planning of facilities to cater for an increasing number of visitors in these south coast estuaries, management agencies must be able to quantify the recreational usage in this group of estuaries.

This survey, therefore, attempts to identify and quantify the different recreational pursuits of visitors …

Fisheries Report No 24 - The Status Of The Salt-Water Crocodile In Some River Systems Of The North-West Kimberley, Western Australia, H. Messel, A. A. Burbidge, A. G. Wells, W. J. Green

Fisheries Research Reports

Counts were made of Salt-water Crocodiles (Crocodylus porosus) in the estuarine portions of four river systems in the northwest Kimberley, Western Australia - the Lawley, Mitchell, Roe-Hunter and Prince Regent. During the ten day survey 463 crocodiles were spotted, including 109 hatchlings. The maximum number of non-hatchling crocodiles present tin the four systems is estimated at 697. Very few large crocodiles were seen.

Populations were particularly small in the Lawley and Mitchell Rivers and the potential for recovery in this area is also small. Prospects for recovery in the Roe-Hunter and Prince Regent were a little better but further surveys …

Fisheries Report No 29 - The Predation Of Pot - Caught Western Rock Lobster (Panulirus Longpipes Cygnus) By Octopus, L M. Joll

Fisheries Research Reports

The losses to the western rock lobster fishery through the predation of pot-caught rock lobsters by octopus were estimated from samples taken on commercial boats in the four seasons 1972/73 - 1975/76. In most seasons approximately 200 000 legal-sized rock lobsters were lost. In the 1975/76 season the estimated financial loss from octopus predation was $392 000. The estimated losses probably represent minimum values. Studies of the biology and behaviour of octopus were carried out to examine the methods of detection, location and entry into rock lobster pots by octopus. The use of octopus traps in rock lobster pots significantly …