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Articles 12121 - 12150 of 12746
Full-Text Articles in Entire DC Network
Population, Home Range, And Dispersal Of Red Foxes In East-Central South Dakota, James D. Sweeting
Population, Home Range, And Dispersal Of Red Foxes In East-Central South Dakota, James D. Sweeting
Electronic Theses and Dissertations
The population, dispersal movements and summer home range of red foxes (Vulpes vulpes) were studied in east-central South Dakota during 1974 and 1975. The spring population density of foxes on a 23,319 ha study area declined from 9.2 families/township in 1974 to 7.6 families/township in 1975. Fifty-four percent of 130 foxes tagged in spring, 1974 and 1975 were recovered during the first year following tagging. Hunting and trapping accounted for 18.0 and 77.8 percent, respectively. Recoveries revealed that dispersing juvenile male foxes were more mobile than juvenile females; juvenile foxes traveled a mean distance of 39 km for males and …
Digestibility Of Common Forage Plants And Energetic Requirements Of The Black-Tailed Prairie Dog, Maureen A. Beckstead
Digestibility Of Common Forage Plants And Energetic Requirements Of The Black-Tailed Prairie Dog, Maureen A. Beckstead
Electronic Theses and Dissertations
Black-tailed prairie dogs (Cynomys ludovicianus) assimilated 51.5 percent of the wheatgrass (Agropyron intermedium) they consumed; thus, they would have to consume 0.148 kcal · g-1 · day-l in order to obtain the 0.076 kcal · g-1 · day-1 they would require to maintain their weight. Prairie dogs assimilated 31.5 percent of the buffalograss/blue grama mixture (Buchloe dactyloides/Bouteloua gracilis) they were fed. They would have to consume 0.229 kcal · g-1 · day-1 of this forage to assimilate 0.072 kcal · g-1 · day-1 and maintain their weight. The proximate composition of forages fed in feeding trials was similar to that …
Biology Of The Porcupine (Erethizon Dorsatum) In Northwestern South Dakota, Judith Johnson
Biology Of The Porcupine (Erethizon Dorsatum) In Northwestern South Dakota, Judith Johnson
Electronic Theses and Dissertations
The summer home ranges, food habits, cover preferences, population dynamics, metabolic rates, growth rates, and taxonomic characteristics were determined for porcupines (Erethizon dorsatum) in northwestern South Dakota. The summer home ranges were 158.2 ha for adult females, 90.4 ha for juveniles, and 57.9 ha for adult males. The population was 34 percent adult males, 16 percent juvenile males, 34 percent adult females, and 15 percent juvenile females. The preferred daytime cover choice was silver buffaloberry (Shepherdia argentea), followed by snowberry (Symphoricarpos occidentalis), earth dens, forbs, and low brush. Shrubs were the most important item in the diet, then trees, forbs, …
The Florida Coastal Zone Management Program: What, Why, How, Who., Florida Bureau Of Coastal Zone Planning, State Of Florida, Dept. Of Environmental Regulation, Division Of Environmental Programs, Bureau Of Coastal Zone Planning
The Florida Coastal Zone Management Program: What, Why, How, Who., Florida Bureau Of Coastal Zone Planning, State Of Florida, Dept. Of Environmental Regulation, Division Of Environmental Programs, Bureau Of Coastal Zone Planning
Waterways and wildlife
A Florida coastal zone management program, once approved and established, will be a cooperative effort of all levels of government and the citizens of Florida. It will establish coastal land and water resource policies, based on realistic goals and objectives, that contribute to the wise use of those resources and protect the options of future generations. It will be a system that is sensitive to criticism, accessible to review and appeal, and flexible enough to reflect changing goals, needs, attitudes and lifestyles. With this approach we can not only treat current problems, but can also avoid future resource use conflicts. …
Farm Dams In The Wheatbelt, I A F Laing
Farm Dams In The Wheatbelt, I A F Laing
Journal of the Department of Agriculture, Western Australia, Series 4
Of the estimated 76 000 farm dams in the wheatbelt, about 8 per cent either leak or are salt affected. The remaining 70 000 dams are capable of holding water for livestock use and can be regarded as sercicable dams.
A great many of the serviceable dams are unreliable water supplies due to the combined effects of lack of runoff from catchments, shallow depth of storage and small size of storage in relation to expected demand from livestock and evaporation loss.
Rural Domestic Water System Peak Flows And Design Innovations, Optimal Water Planning Series, Trevor C. Hughes, Yukio Kono, Ronald Canfield
Rural Domestic Water System Peak Flows And Design Innovations, Optimal Water Planning Series, Trevor C. Hughes, Yukio Kono, Ronald Canfield
Reports
Planning engineers commonly use generous factors of safety for peak flow estimates in urban water supply systems both as a hedge against unforeseen growth and because economies of scale result in relatively low user costs even with such reserve capacity. Transplanting of such design criteria into the rural setting, however, simply does not work. The low density portions of rural domestic systems require very realistic design criteria or the construction costs become infeasible for the small number of customers involved. Peak instantaneous flow rates in a Utah rural system were measured continuously during two summers on three dead-end lines serving …
A Study Of Feasibility Of State Water User Fees For Financing Water Development, Daniel H. Hoggan, O. W. Asplund, J. C. Anderson, D. G. Houston
A Study Of Feasibility Of State Water User Fees For Financing Water Development, Daniel H. Hoggan, O. W. Asplund, J. C. Anderson, D. G. Houston
Reports
Water user fees imposed by a state on major water uses is a possible new alternative source of state water development funds. A fee, similar to an excise tax, might be charged for the use of the water resource per se, which in a number of states is declared to be the property of the public of the state. States generally have not employed such fees as a source of operating funds for water agencies or of development capital. Only in the area of water based recreation-fishing, coating, camping, etc.—have states extensively employed user fees. The revenues from these fees, …
Evaluation Of Southern And Central Utah Cloud Seeding Program, Geoffrey E. Hill
Evaluation Of Southern And Central Utah Cloud Seeding Program, Geoffrey E. Hill
Reports
An evaluation of a winter operational-type cloud seeding project in Utah is made by developing meteorological predictors of target precipitation. Twenty-four hour precipitation amounts in seven unseeded years are matched with 12:00 GMT rawinsonde data to form predictor-predictand relationships. Application of the predictors to the first two years of the project indicates that the observed seeded precipitation is about what would be found in the absence of seeding.
Proceedings Of The Utah Water Pollution Control Association Annual Meeting 1977, James H. Reynolds, Donna H. Falkenborg
Proceedings Of The Utah Water Pollution Control Association Annual Meeting 1977, James H. Reynolds, Donna H. Falkenborg
Reports
Preface: This volume is the first published proceeding of the Utah Water Pollution Associations Annual Meeting. The Technical Program of the Annual Meeting was divided into five separate sessions. The program was developed to attract individuals concerned with management, design and operation of wastewater treatment facilities. Special emphsis was given to the design and operation of wastewater filtration devices. Unfortunately, four papers are not included in the proceedings because the authors failed to meet the submission deadline. These papers are (1) "Utah Discharge Requirements" by Calvin Sudweeks, (2) "Chlorine, Califorms, 1977 Standards and you" by Robert A. Sperling, (3) "Panel …
Performance Evaluation Of An Existing Seven Cell Lagoon System, James H. Reynolds, Ralph E. Swiss, Christine A. Macko, E. Joe Middlebrooks
Performance Evaluation Of An Existing Seven Cell Lagoon System, James H. Reynolds, Ralph E. Swiss, Christine A. Macko, E. Joe Middlebrooks
Reports
No abstract provided.
Growth And Uptake Dynamics Of Selenastrum Capricornutum Parameterized By Percent Nitrogen, Ronald F. Malone, Kenneth A. Voos, William J. Grenney
Growth And Uptake Dynamics Of Selenastrum Capricornutum Parameterized By Percent Nitrogen, Ronald F. Malone, Kenneth A. Voos, William J. Grenney
Reports
Batch cultures of
A Model Of Environmental Transport Of Heavy Metals Originating From Stack Derived Particulate Emission In Semi-Arid Regions, J. J. Jurinak, William J. Grenney, Gene L. Wooldridge, J. Paul Riley, R. J. Wagenet
A Model Of Environmental Transport Of Heavy Metals Originating From Stack Derived Particulate Emission In Semi-Arid Regions, J. J. Jurinak, William J. Grenney, Gene L. Wooldridge, J. Paul Riley, R. J. Wagenet
Reports
Executive Summary:
Upgrading Aerated Lagoon Effluent With Intermittent Sand Filtration, Richard P. Bishop, James H. Reynolds, Daniel S. Filip, E. Joe Middlebrooks
Upgrading Aerated Lagoon Effluent With Intermittent Sand Filtration, Richard P. Bishop, James H. Reynolds, Daniel S. Filip, E. Joe Middlebrooks
Reports
Intermittent sand filtration was evaluated as a means of upgrading the quality of aerated lagoon effluents to satisfy the requirements of PL 92-500. The aerated lagoon in question treats the wastes from a milk and cheese factory located in northern Utah. The treatment system consists of two diffused air aeration ponds followed by a facultative settling pond, were applied to pilot scale intermittent sand filters with 0.17 mm and 0.40 mm effective size sands. The filters were loaded hydraulically from 0.25 million gallons per acre per day to 1.0 million gallons per acre per day. It was found that sand …
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method: Volume I. Research Report, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method: Volume I. Research Report, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Reports
Foreword: This report is composed of thee volumes; Volume I is the Research Report; Volume II consists of recommendations for establishing design manuals and Appendices B, C, D, E, F, G, and H, which are the design aids required for establishing design manuals; Volume III consists of Appendix A, and accumulation of the data base used in the study, FHWA chose to arrange the report as described to facilitate distribution of the results. The methods reported herein are designated as the Federal Highway Administration Methods are designed to be applied to watersheds smaller than 50 square miles but may be …
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method. Volume Ii, Recommendations For Preparing Design Manuals And Appendices B, C, D, E, F, G, & H, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method. Volume Ii, Recommendations For Preparing Design Manuals And Appendices B, C, D, E, F, G, & H, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Reports
Frequency analyses of more than 1,000 small watersheds in the United States and Puerto Rico were used to develop the estimation method for design of peak flow for ungaged watersheds. This method, called the Federal highway Administration (FHWA) method, is conceptually similar to the Bureau of Public Roads (BRP) method developed by W. D. Potter. The FHWA method relates the runoff peak to easily determined hydrophysiographic parameters and is intended for use on watersheds smaller than 50 square miles. The concept of risk is incorporated inot the design procedure. The risk is the probability that one or more events will …
Mixed Integer Programming Models For Water Resources Management, Brad A. Finney, William J. Grenney, A. Bruce Bishop, Trevor C. Hughes
Mixed Integer Programming Models For Water Resources Management, Brad A. Finney, William J. Grenney, A. Bruce Bishop, Trevor C. Hughes
Reports
A regional water quality control model is developed by linking a steady-state water quality simulation model with an optimization model. The water quality simulation model can be applied to complex river systems with both point and nonpoint loads using multiple interdependent pollution parameters described by either linear or nonlinear equations. Twelve water quality parameters can be modeled simultaneously: four non conservative constituents (or conservative constituents if the decay rate is set equal to zero); coliform bacteria (MPN); phosphorus; biochemical oxygen demand (BOD); ammonia (NH3); nitrate (NO3); dissolved oxygen (DO); temperature (°C); and algae. The water quality model is used to …
Bird Problems And Food Storage And Processing Facilities, Robert M. Russell, Robert Yeager, Fred Baur, James R. Dupre
Bird Problems And Food Storage And Processing Facilities, Robert M. Russell, Robert Yeager, Fred Baur, James R. Dupre
Bird Control Seminars Proceedings
For the bird control problems in the food industry I think we have a good pair to work with us. We have Bob Yeager, a pest control authority. Fred Baur is from Procter and Gamble, a great company with a long record of association with the pest control industry. Third, we have with us Jim Dupre, whose experience is with the Food and Drug Administration. And with all the government controls we've learned to expect from the government in the last few years, I think it's good for us to know that we have had a long and good record …
Land Use Planning For Control Of Birds Near Airports, Michael J. Harrison
Land Use Planning For Control Of Birds Near Airports, Michael J. Harrison
Bird Control Seminars Proceedings
During the 1966 Bird Control Seminar, we began to look at birds as a hazard to air- craft, and a possible new role was emerging for the pest control industry. Ten years later, we have yet to see the concept of bird control as seen through the eyes of our Canadian and European counterparts. You know of the assistance role the Air Force is playing in reducing bird strikes, and the Federal Aviation Administration is beginning to actively participate in bird control programs. Success has been seen in habitat modification as a means of reducing bird strikes. The Canadians (Blokpoel, …
Environmental And Health Studies Of Kentucky Blackbird Roosts, Burt L. Monroe Jr., Lois S. Cronholm
Environmental And Health Studies Of Kentucky Blackbird Roosts, Burt L. Monroe Jr., Lois S. Cronholm
Bird Control Seminars Proceedings
At the present time we are under contract from the Kentucky Environmental Quality Commission to study three aspects of Kentucky starling-blackbird roost problems: (1) a study of birds killed this coming winter through PA-14 treatments, to obtain more accurate data on species composition, sex ratios, kill success and food items; (2) a compilation of breeding and wintering data on Kentucky populations through analysis of U.S. Fish and Wildlife Service summer bird counts and banding returns; and (3) a study of spore dispersal of various fungal species, most notably Histoplasma capsulatum, from roost sites. The winter sampling is yet to be …
Examination Of Redwinged Blackbird Nestling Growth Rates Using The Logistic Model: A Case For R And K Selection?, M. I. Dyer, Z. Abramsky
Examination Of Redwinged Blackbird Nestling Growth Rates Using The Logistic Model: A Case For R And K Selection?, M. I. Dyer, Z. Abramsky
Bird Control Seminars Proceedings
One of the few processes of an avian population that presents the opportunity to collect sensitive information about the performance of that population is growth rates of young throughout the brooding period. Growth rate data are sensitive to many conditions of the breeding cycle: proximate influences, such as food availability and weather (Francis, et al., in prep.), and ultimate factors, such as species-specific characteristics, (Ricklefs, 1968). Additionally, the measurements themselves can be obtained with precision. The ability to make such detailed observations is extremely useful and is not always possible for other population parameters, such as determining life table data. …
A Review Of The Limnology Of And Water Quality Standards For Lake Mead, Charles R. Goldman
A Review Of The Limnology Of And Water Quality Standards For Lake Mead, Charles R. Goldman
Publications (WR)
1. The waters of Las Vegas Bay, a heavily utilized recreational resource, receive discharges from a variety of municipal and industrial waste sources. The U.S. Environmental Protection Agency has determined, on the basis of numerous studies, that the present water quality violates state and federal standards and constitutes a public nuisance. Consultants have advised the Sewage and Wastewater Advisory Committee that rapid abatement of the alleged pollution conditions can be achieved by an advanced wastewater treatment (AWT) plant.
2. The major problems in Las Vegas Bay are an objectionable water color, excessive turbidity, noxious odors, and oxygen depletion in certain …
Report On Wastewater Disposal To Board Of County Commissioners, Clark County Nevada, Clair N. Sawyer
Report On Wastewater Disposal To Board Of County Commissioners, Clark County Nevada, Clair N. Sawyer
Publications (WR)
This report is concerned with the management of waste-waters and subsurface drainage from the City of Las Vegas and its environs and the BMI complex, all in Clark County, Nevada. The prime objective is to recommend a plan of action which will utilize the natural resources of the area in the least costly manner and still protect Lake Mead for recreational purposes and use as a public water supply, At this writing, conditions in the upper Las Vegas arm of Boulder Basin are quite unsatisfactory for some recreational purposes due to the extensive blooms of algae which develop. Experience at …
Current Status Report: Pigeon Control, C. Doug Mampe
Current Status Report: Pigeon Control, C. Doug Mampe
Bird Control Seminars Proceedings
My topic is Pigeon control; and because most of you have had some bird control experience, I'm not going to review all the basic concepts that are associated with bird control today. Rather I will skim over them lightly and then tell you how we organize most of our Pigeon control programs, recognizing that that's one approach and that some situations require much different approaches. Some of the things that apply to Pigeon control may apply to other types of bird control, but some are unique. When we get called on a Pigeon control job, the first thing we attempt …
The Arbovirus Surveillance And Control Program In Ohio, 1975 – 76, M. A. Parsons
The Arbovirus Surveillance And Control Program In Ohio, 1975 – 76, M. A. Parsons
Bird Control Seminars Proceedings
In 1975 Ohio experienced the largest epidemic of mosquito-borne encephalitis in its history. Four hundred and sixty-eight human cases (416 St. Louis [SLE] and 52 California [CE] occurred with 30 fatalities; one death was due to CE. The entire United States was hard hit (Illinois, 475; Indiana, 297; Mississippi, 210; Michigan, 20; Tennessee, 91; 30 others, 550 ) with 1816 SLE, 160 CE, 133, Western, and 3 Eastern encephalitis cases causing 150 fatalities. The cycle of mosquito-borne encephalitis in nature progresses as follows: A mosquito infected with virus feeds on a non-infected animal, such as a bird in the case …
Computer Sheets, Walter A. Lawrance
Dams And People: Geographic Impact Area Analysis, Vance E. Arnett, Sue Johnson
Dams And People: Geographic Impact Area Analysis, Vance E. Arnett, Sue Johnson
KWRRI Research Reports
This report attempts to determine the efficacy of using geographic impact areas as analytical sub-groups for the assessment of the impact of multi-purpose reservoir projects on target communities. The impact areas utilized are: the take area; the below-the-dam area; the urban area; and, the adjacent area. Each area is described in detail and each is analyzed for differences in knowledge, previous experience, and perception of impact on community and family.
Data for this study originated from structured and open-ended interviews in Johnson County, Kentucky. Information was collected during two field efforts, the first in February, 1974, the second in August …
Water Current, Volume 8, No. 5, September/October 1976
Water Current, Volume 8, No. 5, September/October 1976
Water Current Newsletter
From the Desk of the Director
Matching Grant Proposal Deadline
Water Research in Nebraska
Water Measures Dead Until Next October
Section 80(c) Dispute Continues
House Subcommittee Considers Easing Irrigation Limitation
USGS 1977 Budget Tops $300 Million
Request for Information on Flood Flow Frequency Techniques for Ungaged Areas
Research Review: Validation and Implementation of a Simplified Streamflow Simulator
Warren D. Fairchild to Leave Council
Improving Design Criteria For Septic Tank Systems, Dee Mitchell
Improving Design Criteria For Septic Tank Systems, Dee Mitchell
Arkansas Water Resources Center Technical Reports
The failure of septic tanks in treatment of wastewater has been responsible for causing health hazards due to contamination and pollution of groundwater and surface waters used for drinking water supplies. Most of these failures have been in the absorption field. Little or no actual research has been performed to establish design criteria for septic tank absorption fields to be used by local, state or federal Health Agencies or Pollution Control Agencies. Historically, almost all design criteria has beed based on a percolation test and the number of bedrooms to be served. Both of these methods have repeatedly been shown …
Minerals And Gemstones Of Nebraska: A Handbook For Students And Collectors, Roger K. Pabian, Allan Cook
Minerals And Gemstones Of Nebraska: A Handbook For Students And Collectors, Roger K. Pabian, Allan Cook
Conservation and Survey Division: Faculty and Staff Publications
Table of Contents:
Introduction
What Are Minerals? What Are Rocks? What Are Gemstones?
What is Mineralogy?
What Can Minerals Tell Us?
Minerals and Geologic Time
Minerals as Environmental Indicators
Minerals as Resources
Where are Minerals Found?
Collecting Courtesy
Tools for Collecting Minerals
Care of Tools
Tips on Collecting Minerals
Safety Rules
Preparation of Specimens
Mineral Identification
Physical Properties
Cleavage
Hardness
Luster
Streak
Specific Gravity
Form
Color
Tenacity
Fluorescence
Chemical Properties
Chemical Composition
Taste
Chemical Tests
Crystallography
Common Nebraska Minerals
Amphibole
Ankerite
Aragonite
Autunite
Barite
Bauxite
Biotite
Calcite
Carnotite
Celestite
Chalcedony
Chalcopyrite
Chalk
Chert
Chlorite
Coal
Copper
Dolomite
Epidote
Feldspar
Fluorite …
Bulletin 4002 - Trickle Irrigation For Farms, K Cole
Bulletin 4002 - Trickle Irrigation For Farms, K Cole
Bulletins 4000 -
The continued demand for, and use of trickle irrigation is proof of the inherent potential and performance of this form of irrigation.
Originally it was used in glasshouses and nurseries but it is now widely adapted to orchards, vegetable and other horticultural small crops and home gardens.
Although research is being actively pursued in the design and use of trickle irrigation it is now beyond the experimental stage as a technique and is an accepted and proven technique of watering many types of crop.