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Articles 19591 - 19620 of 19858
Full-Text Articles in Entire DC Network
Thermal Requirements To Protect Aquatic Life, Clarence M. Tarzwell
Thermal Requirements To Protect Aquatic Life, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
Water temperatures affect aquatic organisms in a number of ways, both directly and indirectly. Some of the latter effects are quite subtle. High temperatures can have direct lethal effects but sublethal levels operating over long periods can be just as harmful through delayed lethal effects and the production of nonlethal stresses which eventually result in changes in the population, reduced growth or reproduction, and the lowering of resistance to parasites, dis ease, and competitors. Temperature, in combination with certain other factors such as day length, influences re producing processes. High water temperatures may stimulate or retard migration, spawning, feeding, and …
Ua12/2/1 College Heights Herald, Vol. 49, No. 43, Wku Student Affairs
Ua12/2/1 College Heights Herald, Vol. 49, No. 43, Wku Student Affairs
WKU Administration Documents
WKU Campus Newspaper Reporting Campus, Athletic and Bowling Green, Kentucky News. This issue contains articles:
- Conrad, Peggy. Three-Day Seminar Probes Down to Earth Problems
- Foreign Policy Conference Set Tomorrow at WKU
- Hightower, Paul. Associated Students Congress to Seek Ratification of Four Constitution Changes
- Collegiate Journalists to Convene Here Today
- Adpi 500’ to End Greek Week
- Miller, Joyce. Terry Miller Crowned Greek Goddess
- Potter, Jerry. Triangular Alignment Will Dominate Future World Affairs – John Stoessinger
- Forcing Underclassmen to Live in Dorms Absurd
- Pidgeon, Patrick, et al. Attacks Scheduling – Greek Week
- Lewis, Lynette. Compliments Spotlights
- Simpson, Steven. Backs James Dowd
- Goodwin, …
Ua12/2/1 College Heights Herald, Vol. 49, No. 42, Wku Student Affairs
Ua12/2/1 College Heights Herald, Vol. 49, No. 42, Wku Student Affairs
WKU Administration Documents
WKU Campus Newspaper Reporting Campus, Athletic and Bowling Green, Kentucky News. This issue contains articles:
- Environmental Discussions Seek Ways to Save the Earth
- Blood, Sweat, Tears, Concert Set Saturday
- U.S.-Soviet Affairs Lecture Set Tonight – John Stoessinger
- Paper, Yearbook Applications Due
- Todd, Tom. Enthusiastic Reception Welcomes Southern Folk Festival Performers
- Miller, Joyce. Greeks Continue Spirited Jousting
- Environmental Teach-In is Designed to Inform
- Visitor’s Parking Should Be Added
- Dowd, James. Answers Vendetta – Military Recruiters
- Ferguson, Brent. Disagrees with Disagrees – Military Recruiters
- Bennett, Ellen. Breathing Air May Be Hazardous to Your Health
- Population Boom: Challenge of 70’s
- Litter Causes Untold …
Ua12/2/1 College Heights Herald, Vol. 49, No. 41, Wku Student Affairs
Ua12/2/1 College Heights Herald, Vol. 49, No. 41, Wku Student Affairs
WKU Administration Documents
WKU Campus Newspaper Reporting Campus, Athletic and Bowling Green, Kentucky News. This issue contains articles:
- Walls, Gary. Three-Day Environment Probe Begins with Sessions Monday
- Miller, Joyce. Festive Week Begins Sunday for Greeks
- Veterans Village to Succumb to University Expansion
- Applications Due Wednesday for Publications Positions
- Greek Carnival Set Tomorrow
- Western Holds Kentucky Education Association Breakfast
- On Western Faculty 47 Years
- Dr. Gordon Wilson Sr. Dies
- Women’s Dorms to Study Problems of Students
- Senior Art Exhibits on Display in Gallery
- Cinema ’70 to Show ‘The Promoter’
- Environmental Teach-In Deserves Wide Support
- Ressler, Ed. Deplores Dorms
- Watkins, Eddie. Wants Married Housing
- Willingham, …
Ua12/2/1 College Heights Herald, Vol. 49, No. 40, Wku Student Affairs
Ua12/2/1 College Heights Herald, Vol. 49, No. 40, Wku Student Affairs
WKU Administration Documents
WKU Campus Newspaper Reporting Campus, Athletic and Bowling Green, Kentucky News. This issue contains articles:
- Walls, Gary. Pollution to Get Full Airing During Environmental Teach-In
- Smith, Don. Nine-Piece Puzzle Booked for April 25 – Blood, Sweat & Tears
- Walls, Gary. Thoughts Turn Toward South as Awaited Break Approaches
- New Body to Rest – College Heights Herald, IBM Computer
- Hightower, Paul. Legislators Feel Independence During Session
- Folk Festival to Return April 16
- Applications Being Taken for Administrative Interns
- Libraries Set Vacation Hours
- Campus Mail Guidelines Need to Be Clarified
- Dowd, Jim. Abhors Military Recruiters
- Yell Leading Program Needs Re-Examination
- Hawkinson, Kristi. …
Rodent Control In The Hawaiian Sugar Industry, Allen H. Teshima
Rodent Control In The Hawaiian Sugar Industry, Allen H. Teshima
Vertebrate Pest Conference Proceedings: 4th (1970)
Past and present concepts of rodent control at the 24 sugar plantations of Hawaii are reviewed with particular attention being given to the research efforts of the Experiment Station of the Hawaiian Sugar Planters' Association in improving operational rodent control in sugarcane. Hawaii offers a unique set of conditions: a 2-year crop cycle, a production of over 100 tons of sugarcane per acre, countless numbers of gulches and wasteland bordering crop fields, and a year-long growing season, all having an effect on rat population and habitat.
Importance Of Wildlife Rabies Control, Richard L. Parker
Importance Of Wildlife Rabies Control, Richard L. Parker
Vertebrate Pest Conference Proceedings: 4th (1970)
ABSTRACT: Rabies in animals has been known in North America for over two centuries, and whether the disease was initially present in wild species or was introduced by dogs, it has been known in skunks for almost a century and a half. Today more rabies cases in wild animals are reported than in domestic animals, and a considerable proportion of both human and domestic animal exposures to the disease are the result of wild-animal contact. The most useful techniques for controlling wild animal rabies today are methods that reduce contact between infected individuals and susceptible individuals; these involve the manipulation …
Pocket Gopher Problems And Control Practices On National Forest Lands In The Pacific Northwest Region, Paul R. Canutt
Pocket Gopher Problems And Control Practices On National Forest Lands In The Pacific Northwest Region, Paul R. Canutt
Vertebrate Pest Conference Proceedings: 4th (1970)
Pocket gophers of concern to foresters in the Pacific Northwest belong to the genus Thomomys (13). The two species believed responsible for most conifer damage are the northern pocket gopher (T. talpoides) which occurs east of the Cascade mountains in Washington, Oregon, and south into the northeastern edge of California and the nearly identical Mazama pocket gopher (j_. mazama), which ranges throughout western Oregon and into north central California (13). Pocket gopher damage is best known to agriculturalists who for many years have suffered losses to root, hay, fruit, and bulb crops, as well as damage to irrigation canals (23). …
Control Of Freshwater Fish With Chemicals, Robert E. Lennon
Control Of Freshwater Fish With Chemicals, Robert E. Lennon
Vertebrate Pest Conference Proceedings: 4th (1970)
Fish toxicants have been used for nearly 60 years by sport fishery managers to remove predaceous or competing fishes from gamefish waters. The reclamation of lakes and streams by poisoning unwanted fish is considered to be one of the better management tools, and the demand for reclamations is increasing as more waters come under intensive management. Many chemicals have been tried as fish toxicants, but the insecticides rotenone and toxaphene have been most widely used despite their disadvantages of non-selectivity between wanted and unwanted fishes, persistence in water, and toxic effects on aquatic invertebrates. Research in the past 20 years …
Reproduction Inhibitors For Bird Control, M. R. Woulfe
Reproduction Inhibitors For Bird Control, M. R. Woulfe
Vertebrate Pest Conference Proceedings: 4th (1970)
Reproduction inhibitors are intended to maintain or control a population at a desired level; toxicants aim at elimination of the population. Azocosterol hydrochloride (SC-12937; 20,25-diazocholestenol dihydrochloride) is a long acting inhibitor of ovulation in the pigeon (Columba liyia) by interfering with cholesterol synthesis and egg yolk formation. Corn impregnated with SC-12937 at the 0.1% level by weight and fed for 10 days has been found to inhibit or diminish reproduction for 5-6 months. Population turnover rate, mortality and longevity of the feral urban pigeon are also discussed.
The Prairie Naturalist Volume 2, No. 1. March, 1970
The Prairie Naturalist Volume 2, No. 1. March, 1970
The Prairie Naturalist
EDITORIAL: Speaking of Ecologists ▪ Paul B. Kannowski
NEEDED: AN ETHICAL BASIS FOR ENVIRONMENTAL POLICY ▪ Gordon L. Iseminger
THE POPULATION PARADOX ▪ Gary L. Pearson
THE ENVIRONMENTAL CRISIS—A CALL TO ACTION ▪ Glen A. Sherwood
NORTH DAKOTA—1970 ▪ Philip B. Aus
Water Resources News, Volume 2, No. 2, February 1970
Water Resources News, Volume 2, No. 2, February 1970
Water Current Newsletter
Evaporation Reduction
National Science Foundation Announces a New Program
The Universities and Environmental Quality
Guidelines Will Be Issued for Federal Programs Affecting the Environment
Conservation and the Environment - Big Political Issue?
National Land Use Policy Act of 1970
The Safety of Community Water Supply Systems
River System Engineering - Summer Short Course
OWRR Holds Fifth Annual Water Resources Research Conference
Environmental Health Service Organized at HEW
Algae-Eating Fish - A Possible Way to Control Eutrophication?
Resources for the Future Considerse Non-Monetary Benefits for Conservation Goals
Agreement to Require Discharges of Wastes Into the Nation's Waterways to Reveal Their Pollution …
Reducing Evaporation From Farm Dams : A Progress Report December 1969, I A F Laing
Reducing Evaporation From Farm Dams : A Progress Report December 1969, I A F Laing
Journal of the Department of Agriculture, Western Australia, Series 4
IN most seasons in the Western Australian Wheatbelt evaporation reduction techniques rate a low priority due to either the expense or the relative inefficiency of the techniques.
It is generally agreed that a similar investment in deepening or enlarging existing dams, or making new dams larger from the outset, is likely to be more profitable.
Concentration Of Co, In The Air Above A Sugar Beet Field, K.W. Brown, Norman J. Rosenberg
Concentration Of Co, In The Air Above A Sugar Beet Field, K.W. Brown, Norman J. Rosenberg
School of Natural Resources: Faculty Publications
The concentration of CO, in air sampled above a sugar beet crop was measured during July, August, and early September 1966 at Scottsbluff, Nebr. During July the mean daytime concentration decreased from 310 ppm to 283 ppm as the leaf area index increased from 0.8 to 4.0. Only small deviations from the mean daytime Concentration of 283 ppm occurred during the remainder of the season. The mean nocturnal concentration during this period was 320 ppm and was more variable than the daytime concentration. The daily amplitude of concentration averaged 70 ppm and was as great at times as 100 ppm. …
The Baker Ranch: Glen Canyon National Recreation Area: A History, Lenard E. Brown
The Baker Ranch: Glen Canyon National Recreation Area: A History, Lenard E. Brown
Elusive Documents
No abstract provided.
The Growing Season, Department Of Agriculture, Western Australia, Bureau Of Meteorology
The Growing Season, Department Of Agriculture, Western Australia, Bureau Of Meteorology
Journal of the Department of Agriculture, Western Australia, Series 4
IN AUSTRALIA the seasons of summer, autumn, winter and spring do not have the importance that they have in the Old World, and though summer and winter weather are quite different, there is not the obvious difference in autumn and spring conditions that there is in the colder countries.
This is largely due to the difference in vegetation and in its life cycle in the different places.
Supplying Wood Products For More People - A Challenge To The Forest Industry, John A. Segur, F. Bruce Lamb, Basil E. Allen
Supplying Wood Products For More People - A Challenge To The Forest Industry, John A. Segur, F. Bruce Lamb, Basil E. Allen
Yale School of the Environment Bulletin Series
No abstract provided.
The Control Of Algae, G R W Meadly
The Control Of Algae, G R W Meadly
Journal of the Department of Agriculture, Western Australia, Series 4
CONDITIONS in areas of still, stored water in Western Australia can easily become ideal for the development of algae and control measures may become necessary in farm dams and swimming pools.
Progress Report On Studies Of Hydraulic Geometry Of Large Bed Element Streams, Dean F. Peterson
Progress Report On Studies Of Hydraulic Geometry Of Large Bed Element Streams, Dean F. Peterson
Reports
This study developed a general method for estimating runoff rates and associated confidence limits of a given recurrence interval for ungaged small urban watersheds. The utility of the method developed was demonstrated through its application to a southeast region of Texas. Some 200 historical rainfall-runoff events from 40 watersheds in the Houston, Austin, Dallas, and Fort Worth urban areas were analyzed. Watershed data such as drainage area, percent of urbanized area channel length, average channel slope, land slope, and soil type are documented. Total rainfall amounts, intensities, durations, and mass-time distributions were determined for each storm and used to develop …
Systems Analysis Of Hydrologic Problems, J. Paul Riley, Diana Averett
Systems Analysis Of Hydrologic Problems, J. Paul Riley, Diana Averett
Reports
Introduction: Increasing national and international interest in water resources in recent years has stimulated much new activity and progress in hydrology. It is now generally recognized that the science of hydrology is basic to an understanding of water resources problems and to planning for water resources development. Accompanying this demand upon the science of hydrology is an urgent need for improved education at the university level. In resopnse to this need for improved education, the First International Seminar for Hydrology Professors was held at Urbana, Illinois, in July 1969. The Second International Seminar was held at Logan, Utah, during August …
Publications Of The Utah Water Research Laboratory, Utah Water Research Laboratory
Publications Of The Utah Water Research Laboratory, Utah Water Research Laboratory
Reports
No abstract provided.
The Function Of Social Behavior In Water Resource Development , Wade H. Andrews, Dennis C. Geertsen
The Function Of Social Behavior In Water Resource Development , Wade H. Andrews, Dennis C. Geertsen
Reports
Preface: This report is an analysis of a social survey of the middle and lower Bear River Basin of southeastern Idaho and northern Utah concerning the problem of water resource development in a semiarid region of the Western United States. The survey part of the study, carried out in the summer of 1966, dealt with both general social factors and a specific proposal made by the Bureau of Reclamation for developing water resources of the Bear River. In many respects this proposal and the resulting behavior is typical of other western river basin projects, in some other ways, however, it …
Emergency Chlorination Of Farm Water Supplies, H C. Hughes
Emergency Chlorination Of Farm Water Supplies, H C. Hughes
Journal of the Department of Agriculture, Western Australia, Series 4
TOWARDS the end of summer (and especially in a drought) the risk of water in dams, soaks, wells or tanks becoming polluted is increased.
Bore water is much less likely to be affected unless the bore is poorly sited near a farm building, such as a shearing or milking shed, a pig pen, or a septic tank system.
Water Conservation : The Storage Life Of Farm Dams, D J. Carder
Water Conservation : The Storage Life Of Farm Dams, D J. Carder
Journal of the Department of Agriculture, Western Australia, Series 4
HOW MANY stock can a dam of a certain size and depth be expected to carry and how long will the supply last?
What size of dam is needed in case the winter rains fail? How many stock can a dam support and still provide a drought supply?
An Evaluation Of Relationships Between Streamflow Patterns And Watershed Characteristics Through The Use Of Opset, L. Douglas James, William O. Thompson, Glendon Allen Ross, Earnest Y. Liou
An Evaluation Of Relationships Between Streamflow Patterns And Watershed Characteristics Through The Use Of Opset, L. Douglas James, William O. Thompson, Glendon Allen Ross, Earnest Y. Liou
KWRRI Research Reports
Selection among alternative flood control measures would be better informed if better information could be obtained on the marginal change in flood hazard associated with land use and other changes in the tributary watershed. Hydrologic modeling is the most promising approach to answering this question; however, the use of existing models is hampered by the absence of information correlating model parameters with physical characteristics of the watershed.
To deal with this situation, a method was developed for estimating the parameter values for the Stanford Watershed Model which best match recorded with simulated streamflows. Physical characteristics were measured for 17 rural …
Factors Affecting Relocation In Response To Reservoir Development, Rabel J. Burdge, Richard L. Ludtke
Factors Affecting Relocation In Response To Reservoir Development, Rabel J. Burdge, Richard L. Ludtke
KWRRI Research Reports
The focus of this paper is on the question of how rural people anticipate forced moves as a result of flood control projects and how they change their life in accepting separation from familiar surroundings.
A model of faced migration is presented which sees the variables of socioeconomic status, knowledge of reservoir projects, vested interests and the degree of identification with place of affected persons as producing differential apprehension over moving. Differential apprehension is then seen as producing different attitudes toward the project which will influence the type of migration plans.
To test this model of forced migration, data were …
Evaluation Of The Social Impact Of Reservoir Construction On The Residential Plans Of Displaced Persons In Kentucky And Ohio, Richard L. Ludtke, Rabel J. Burdge
Evaluation Of The Social Impact Of Reservoir Construction On The Residential Plans Of Displaced Persons In Kentucky And Ohio, Richard L. Ludtke, Rabel J. Burdge
KWRRI Research Reports
The states of Kentucky and Ohio have numerous reservoir projects at various stages of planning and construction. Each of the projects produces substantial social impact for the residents of the area and particularly for those persons affected by a loss of property and homes. This impact is not uniform in that people respond differently to displacement and the methods of adjusting relocation are known to differ among people.
This research was initiated to develop and test a model for explaining migration under such conditions. The model includes a consideration of people's potential for transferring existing statuses to new residences, the …
Feeding Of Black Bullheads Ictalurus Melas (Rafinesque) In Experimental Cages, Kay R. Hill
Feeding Of Black Bullheads Ictalurus Melas (Rafinesque) In Experimental Cages, Kay R. Hill
Electronic Theses and Dissertations
Black bullheads, Ictalurus melas (Rafinesque), were grown experimentally from July 25, 1969, through October 21, 1969. The fish, collected from Lake Poinsett, were grown in five cages each with a water volume of 2.6 m³ and five cages each with a volume of 3.86 m³. The larger cages contained nearly 60 percent of the total 323 m³ of water volume in the cages. No significant difference in fish growth between the two cage sizes were observed. Fish in large cages gained 204.4 Kg and were fed 1550.8 Kg of food, for a food conversion of 6.60. Fish in smaller cages …
Man And His Environment: The Ecological Limits Of Optimism, R. S. Miller, G. M. Woodwell, W. R. Burch, P. A. Jordan, R. L. Means
Man And His Environment: The Ecological Limits Of Optimism, R. S. Miller, G. M. Woodwell, W. R. Burch, P. A. Jordan, R. L. Means
Yale School of the Environment Bulletin Series
No abstract provided.
Likelihood Of Drought Years In South-Western Australia : How Often Can Droughts Such As That Of 1969 Be Expected In Western Australia's Farming Areas?, Eugene Adsil Fitzpatrick
Likelihood Of Drought Years In South-Western Australia : How Often Can Droughts Such As That Of 1969 Be Expected In Western Australia's Farming Areas?, Eugene Adsil Fitzpatrick
Journal of the Department of Agriculture, Western Australia, Series 4
Because of the serious consequences of drought to individual farmers and to Western Australia's economy, it is worth making an early appraisal of the 1969 rainfall conditions that led to the State's most recent drought in an attempt to estimate how often such seasons might be expected in the agricultural areas.