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Articles 19201 - 19230 of 19872

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Is Nature Our Birthright?, Nancy Heneson Jan 1981

Is Nature Our Birthright?, Nancy Heneson

Ecology Collection

It is of course impossible to escape the notion of self-interest in our relationship with nature. In fact, it is "unnatural," if one understands (and, one is forced to say nowadays, believes in) evolution. However, there is no real justification for either disguising this as stewardship or perverting it into dominionism. Every organism has an impact on the environment, and it is not only idealistic but biologically nonsensical to argue that we should leave everything alone. However, when decisions on policy are made which direct the future use of land, plants and animals, at least let the rationale not be …


Initial Growth And Survival Of Bluegills And Black Bullheads Stocked With Largemouth Bass In South Dakota Ponds, James J. Shelley Jan 1981

Initial Growth And Survival Of Bluegills And Black Bullheads Stocked With Largemouth Bass In South Dakota Ponds, James J. Shelley

Electronic Theses and Dissertations

Initial growth and survival rates were estimated for bluegills (Leponis macrochirus) and black bullheads (Ictalurus melas) stocked simultaneously with largemouth bass (Micropterus salmoides) in ponds throughout South Dakota. Mean first year survival for bluegills and black bullheads stocked in eastern South Dakota ponds was 28.6% and 67.7%, respectively. Differences in first year bluegill growth throughout the state were not detected. Total lengths for bluegills averaged 52.4 mm after one growing season statewide and 137.1 mm after two growing seasons in southeastern South Dakota ponds. Significant (P<.05) geographical differences in first year growth of black bullheads were detected with mean lengths ranging from 67.7 mm in northwest ponds to 115.5 mm in southeast ponds. The average total length for black bullheads after two growing season in southeastern South Dakota ponds was 215.2 mm. The combined effects of pH, turbidity, and bicarbonate alkalinity accounted for 67.5% of the variation in first year bluegill growth. The pond parameters total number of growing days, fish present prior to stocking, and pond surface area when combined accounted for 73.9% of the variation in first year black bullhead growth. Differences in bluegill relative weight values were not detected throughout South Dakota; the average for the state was 105.2. Mean black bullhead condition factors (K) for fish with total lengths between 128 and 191 mm were 1.85 and 1.45 for pre- and post-spawning periods, respectively. Bullheads probably spawned between 29 May and 26 June 1980.


The Physical And Chemical Limnology Of Lake Mcconaughy With Reference To Fisheries Management, Melvin W. Taylor, Kit M. Hams Jan 1981

The Physical And Chemical Limnology Of Lake Mcconaughy With Reference To Fisheries Management, Melvin W. Taylor, Kit M. Hams

Nebraska Game and Parks Commission: Publications

Lake McConaughy is an important fishery resource of the state of Nebraska. The estimated fishing pressure in 1975 as determined from a postal creel census was 175,872 angler days (Morris 1977). This estimate is inflated compared to an on-site creel census conducted in 1977-78 which showed a total of 69,500 fishing trips annually (Madsen 1980). Not all fishermen were contacted so this estimate is undoubtedly too low. Regardless of which figure is accepted, the reservoir provides many man-days of fishing opportunity. Conservation and management of the fishery resource is necessary to maintain and/or improve its quality,

An important factor in …


A Generalized Inland Fishery Simulator For Management Biologists, Melvin W. Taylor Jan 1981

A Generalized Inland Fishery Simulator For Management Biologists, Melvin W. Taylor

Nebraska Game and Parks Commission: Staff Research Publications

Presently available fishery models are either too simplified or too complicated to be useful to inland fishery managers. This research was directed toward developing a simplified but realistic computerized simulator useful to fishery managers. The model developed is basically an ageclass structured simulator with features built in to allow easy but effective use by fishery managers. It includes provisions for input of all important parameters plus provisions for density-dependent relationships where applicable. Examples of model use are given for a put-and-take rainbow trout (Salmo gairdneri) fishery and a self-sustaining walleye (Stizostedion vitreum) population.


Physical And Chemical Limnology Of Lake Mcconaughy, Melvin W. Taylor, Kit M. Hams Jan 1981

Physical And Chemical Limnology Of Lake Mcconaughy, Melvin W. Taylor, Kit M. Hams

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Lake McConaughy is an important fishery resource of the state of Nebraska. The estimated fishing pressure in 1975 as determined from a postal creel census was 175,872 angler days (Morris 1977). This estimate is inflated compared to an on-site creel census conducted in 1977-78 which showed a total of 69,500 fishing trips annually (Madsen 1980). Not all fishermen were contacted so this estimate is undoubtedly too low. Regardless of which figure is accepted, the reservoir provides many man-days of fishing opportunity. Conservation and management of the fishery resource is necessary to maintain and/or improve its quality,

An important factor in …


Water Current, Volume 13, No. 1, January/February 1981 Jan 1981

Water Current, Volume 13, No. 1, January/February 1981

Water Current Newsletter

Annual Report, Nebraska Water Resources Center
Water Resources Seminars
Matching Fund Proposals Submitted to OWRT
Nebraska Water Conference
Fischbach Receives Award
Director of DWR Resigns
EPA Announces Groundwater Protection Plan
Five-Year Research Goals and Objectives
Research Review: Estimation of Ground Water Recharge Benefits for Irrigation Use


The Quality Outdoor Recreation Component In Multi-Purpose Conservation Areas: A User Assessment Devised, And Applied To Pinehurst Lake Conservation Area, Gerald Carl Thomas Jan 1981

The Quality Outdoor Recreation Component In Multi-Purpose Conservation Areas: A User Assessment Devised, And Applied To Pinehurst Lake Conservation Area, Gerald Carl Thomas

Theses and Dissertations (Comprehensive)

Recreational demand for out-of-doors space and facilities continues to increase into the 1980’s. Accordingly, multi-purpose conservation areas, by the nature of their designations, require ongoing assessment of the attributes which determine the quality of the recreational experience they afford.

A problem with the master planning process for these multi-use areas is that in the past, little or no consideration has been given to user-recreationist input in the development stages of the master plans. The purpose of this study is to devise a method of assessing user satisfaction towards the recreational quality available at multi-use conservation areas, and to show how …


Environmental Quality 1980 - Hillsborough County Florida, Hillsborough County Environmental Protection Commission Jan 1981

Environmental Quality 1980 - Hillsborough County Florida, Hillsborough County Environmental Protection Commission

Reports

This report summarizes at least 111,497 air pollutant samples collected at about 86 sampling stations throughout Hillsborough County during 1980. Enclosed maps attempt to depict the cleaner and dirtier areas of Hillsborough County, while data summaries show where and how often air quality standards were exceeded during 1980.

This broad base of water data obtained during 1972-1980 provides useful background data for eventual development, revision and enforcement a f regulations, standard effluent limi tation plans, or programs established under the Federal Water Pollution Control Act of 1972.


The Distribution And Relative Abundance Of Aquatic Oligochaeta In The Upper Cache River System, Southern Illinois, In Relation To Water Quality, Mark Julian Wetzel Jan 1981

The Distribution And Relative Abundance Of Aquatic Oligochaeta In The Upper Cache River System, Southern Illinois, In Relation To Water Quality, Mark Julian Wetzel

Masters Theses

Species composition, distribution, abundance, and water quality relationships of aquatic oligochaetes occurring in the upper Cache River system, southern Illinois were investigated. Forty-two taxa of oligochaetes including 16 naidids, 22 tubificids and representatives of the families Aeolosomatidae, Branchiobdellidae, Enchytraeidae, and Lumbriculidae were collected. Four species of oligochaetes new to Illinois, Limnodrilus psammophilus Loden, L. rubripenis Loden, Psammoryctides (Spencerius) californianus Brinkhurst, and Haemonais waldvogeli Bretscher were collected during this study. Another species of Limnodrilus new to science is reported here, as yet undescribed. The thesis that aquatic oligochaetes can be used as true water quality indicator organisms is rejected. It is …


Residential Development And Coastal Flood Plain Management In Rhode Island: Its History, Present Status And Future Options, William R. Gordon Jr. Jan 1981

Residential Development And Coastal Flood Plain Management In Rhode Island: Its History, Present Status And Future Options, William R. Gordon Jr.

Marine Affairs Theses and Major Papers

It is the objective of this major paper to examine and assess the present status and future orientation of flood plain management in Rhode Island. The primary focus of this paper will address floodproofing (Building Code Regulations) of structures as a preventative measure against flood damages. Floodproofing, as an exercise of local police power, is applicable to desired uses of the flood plain; such as residential, recreational and commercial structures. Emphasis will be extended to recreational and residential buildings.


Trace Metal Pollution In Narragansett Bay: A Case Study Of The Rhode Island Quahog Fishery, Scott W. Horsley Jan 1981

Trace Metal Pollution In Narragansett Bay: A Case Study Of The Rhode Island Quahog Fishery, Scott W. Horsley

Marine Affairs Theses and Major Papers

This paper was written with two objectives in mind: to provide information relevant to the protection of the quahog fishery and the protection of human health. Both are threatened as hundreds of millions of gallons of industrial effluents and sewage treatment plant discharges enter Narragansett Bay daily. The implications of trace metal pollution with respect to the quahog fishery have received little attention to date. The purpose of this paper is to assemble scientific, legal, and socioeconomic information in a fashion which will direct future research and management attempts in an effective manner.


U.S. Army Corps Of Engineers Public Interest Review: An Evaluation Of Implementation Effectiveness, Sharon Kelberg Jan 1981

U.S. Army Corps Of Engineers Public Interest Review: An Evaluation Of Implementation Effectiveness, Sharon Kelberg

Marine Affairs Theses and Major Papers

The U.S. Army Corps of Engineers is authorized to permit or deny dredge and fill activities in the nation's coastal and wetland regions. Originally, responsible only for the maintenance of navigation, the Corps considered only navigational requirements in decisions to grant or deny permits. Now, however, the Corps must demonstrate, that the "public interest" is served as well. This study examines the scope of the public interest and attempts to evaluate the effectiveness of the program in a particularly controversial project. The initial phase provides evaluation criteria necessary to analyze the application of the public interest review. The second phase …


Vegetative Community Descriptions For The North Platte River In Wyoming And Nebraska, Lynn Fisher Nov 1980

Vegetative Community Descriptions For The North Platte River In Wyoming And Nebraska, Lynn Fisher

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

A description of the vegetative communities in an area will provide an insight to wildlife potential and use of that area. Wildlife and its corresponding habitat are recognized as important for recreation and to the overall environmental quality of an area. The Water and Power Resources Service, Lower Missouri Region, is presently engaged in a study of the Platte River Basin, including an evaluation of wildlife habitat and associated environmental needs. Quantification of wildlife habitat along the South Platte River has been completed. Vegetation communities were described and habitat maps were prepared from color infrared aerial photographs (scale – 1:24,000). …


Water Current, Volume 12, No. 6, November/December 1980 Nov 1980

Water Current, Volume 12, No. 6, November/December 1980

Water Current Newsletter

Proposal Deadline for OWRT Annual Cooperative Program
New Staff Addition
Legislative Record Available
General Guidelines Available
Water Resource Seminar Series
MRBC Launches Missouri River Flood Plain Study
Interim Study on Irrigated Western Farmlands Indicates Most Are Small Operations
Federal Water Resources Research Priorities
Research Review: Remotely Sensed Crop Temperatures for Water Resources Management


Ratepayer Financing Of Solar Thermal Electric Commercial Demonstration Projects, Mark D. Jarmie, Jeff V. Conopask Oct 1980

Ratepayer Financing Of Solar Thermal Electric Commercial Demonstration Projects, Mark D. Jarmie, Jeff V. Conopask

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Commercialization of a new energy supply technology requires demonstration of its feasibility to potential customers at each staqe of development. While small improvements of proven energy supply svstems are usually privately pioneered, larger or more uniaue research projects are often delaved as economic and technical concerns are assuaged through public sector R&D funding. For solar thermal central receivers, even though their technical viability has been tested on a small scale, acceptance by utilities will require full-scale field experiments and commercial-sized demonstration plants.


Entropy Based Analytic Techniques, John O. Dow Oct 1980

Entropy Based Analytic Techniques, John O. Dow

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The study of energy supply futures is simplified when the end use of this energy is included in the analyses. The various supply and end use opportunities can be evaluated against a standard basis with the analytic techniques discussed here. A simplified theoretical background for these techniques is given and a wide range of energy supply and end use situations to which the techniques apply is presented.


The Gloom Gets Doomier, David A. Summers Oct 1980

The Gloom Gets Doomier, David A. Summers

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper reviews the likely sources of energy in the year 1990. Economic conditions, difficult to forecast, affect short-term consumption, while technological breakthroughs, equally impossible to predict, will control long-term production of energy. For the ten-year period, however, commitments to construction, or feasibility studies, must already be in hand. This allows a prediction of the energy supply for that year, and such a prediction is made. Because this indicates that only about 1 percent growth in supply can occur over this time period, against a requirement for at least 2 percent, the forecast is doomier than it was in earlier …


The Economics Of Metals Recovery From Power Plant Fly Ash Via The Ames Hichlor Process, S. J. Weiss, G. Burnet, C. Y. Chang Oct 1980

The Economics Of Metals Recovery From Power Plant Fly Ash Via The Ames Hichlor Process, S. J. Weiss, G. Burnet, C. Y. Chang

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The disposal of potentially hazardous coal wastes is becoming a significant problem for the payer industry. The Ames HiChlor process, which utilizes paver plant fly ash as a source of aluminun, is proposed as a method of coal waste utilization. In the HiChlor process fly ash is chlorinated in the presence of a carbonaceous reduct ant at 700 to 900°C to produce alumnum chloride and titaniun tetrachloride as salable products. An economic analysis for a plant vhich would process 6,000 tons per day of fly ash is presented. Conditions under which the proposed process will prove profitable are discussed.


Agri-Fuel Potentials Of Butanol/Acetone Production: An Alternative To Ethanol For A Gasoline Substitute, Randall Noon Oct 1980

Agri-Fuel Potentials Of Butanol/Acetone Production: An Alternative To Ethanol For A Gasoline Substitute, Randall Noon

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Butanol and acetone can be produced via a fermentation process similar to ethanol. Whereas ethanol fuels require strict observance of federal and state alcohol laws, butanol and acetone are not so regulated. These and other advantages may make the production of butanol/acetone fuels an alternative choice for a gasoline substitute.


The Price Of Oil, R. W. Clack Oct 1980

The Price Of Oil, R. W. Clack

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

An examination of major forces in the petroleum market with primary emphasis on the decade of the 1970s. The market force (s) responsible for the factor-of-ten increase in the price of crude oil is isolated, if not identified. The market's "message" is set forth for energy policy planners.


Amorphous Silicon Solar Cells: A Review, Robert D. Engelken, Patrick L. Cole Oct 1980

Amorphous Silicon Solar Cells: A Review, Robert D. Engelken, Patrick L. Cole

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Recent developments in the production and study of the properties of amorphous silicon containing hydrogen and fluorine impurities are reviewed. Especially emphasized are the properties of the material in regard to its photovoltaic potential and the roles of hydrogen and fluorine in modifying such properties as band gap and mobility from those of the pure amorphous and crystalline material.


Energy And Economic Development, Steven Skeet Chang Oct 1980

Energy And Economic Development, Steven Skeet Chang

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The paper sets out to examine the impact of energy crisis on the world economy in general and the less developed countries (LDCs) in particular. To clearly and fully understand the economic problems confronting LDCs in the era of energy shortage, it is necessary to formulate a general structural theory of economic development. A more comprehensive multidimensional indicator of economic development should also be constructed to measure the industrialization of the LDCs under study.


Determination Of Washability And Flotation Characteristics Of Important Missouri Coal Seams, Hayri Erten Oct 1980

Determination Of Washability And Flotation Characteristics Of Important Missouri Coal Seams, Hayri Erten

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Most of the 14 workable coal seams in the State of Missouri are considered to be high in ash and sulfur contents and need beneficiation in order to meet customer and Environmental Protection Agency requirements. If proper beneficiation methods can be designed, more Missouri coal will be mined and used within the state.

The objectives of this research are (1) to draw the washability curves of important Missouri coal seams in order to determine their washability characteristics, and (2) to determine the flotation characteristics of the same seams.

Tests conducted on 20 samples taken from Bevier, Croweburg, Mulky, and Summit …


The Oil Industry And Antitrust Merger Policy, Pauline Weber Oct 1980

The Oil Industry And Antitrust Merger Policy, Pauline Weber

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper examines the trends in merger activity in the petroleum industry in light of over-all merger activity and of the Justice Department's merger guidelines. Supreme Court precedents and economic conditions within the petroleum area are discussed. Some conclusions concerning the Justice Department's merger policy are included.


Rate Of Return Regulatory Policy -- The Bane Of Electric Utilities?, Charles David Laderoute Oct 1980

Rate Of Return Regulatory Policy -- The Bane Of Electric Utilities?, Charles David Laderoute

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

In the past,rate of return regulation served to the advantage of electric utility stockholders. Today this is no longer the case. Furthermore, owners cannot assume that utility management can or will work totally in their behalf. As a result, this paper presents as its main thesis that utility stockholders should band together into advocacy groups to support their right to a fair rate of return.


Economics, Politics And The Future Supply Of Energy Sources, Raphael Shen Oct 1980

Economics, Politics And The Future Supply Of Energy Sources, Raphael Shen

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

High degree forward linkages created by oil and natural gas consumption was sufficient "justification" to regulate energy prices. The "welfare triangle" was artificially enlarged, and the economy as a whole indeed reaped benefits therefrom. It was workable, then. But the economy has since been experiencing macroeconomic dislocations. To avoid future payments of current policy mistakes, to ensure continued and steady economic growth, and to assure future energy adequacy/ abundance, enhanced investment incentives are rational imperatives that merit serious consideration.


Volume 4, Number 10 (October 1980), The Solar Ocean Energy Liaison Oct 1980

Volume 4, Number 10 (October 1980), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.


An Analysis Of Residential Water Demand Schedules In Arkansas, Richard K. Ford, Joseph A. Zieger Oct 1980

An Analysis Of Residential Water Demand Schedules In Arkansas, Richard K. Ford, Joseph A. Zieger

Arkansas Water Resources Center Technical Reports

Water has held man's interest for centuries, and a considerable body of knowledqe has been developed about this subject, but it has only been considered only recently by decision makers in an economic sense. Because water is required to sustain life, the thought of its being an economic good to individuals has not been considered applicable or "fair" by those individuals who are concerned with its acquisition and distribution. Moreover, water has been in fairly abundant supply relative to demand for most of the country. However, as this situation is upset by increases in population and water use, a realization …


The Probe, Issue 8 - September 1980 Sep 1980

The Probe, Issue 8 - September 1980

The Probe: Newsletter of the National Animal Damage Control Association

Contents:
Probing for the Probe
Who says ADC doesn’t cover the waterfront!? And the Dumps Too!
U.S. Fish and Wildlife Service Animal Damage Control Activities (Operational and Extension)
Bats
Steel Leg Hold Live Trap by Milton Caroline
Ol’Timer’s Corner: Cliff Presnall
EPA Key to Post Mortem Symptoms
Some Coyotes Can’t Wait
Animal Rights by Homer S. Ford
Seen any Black-footed Ferrets Recently?
William D. Fitzwater


Effects Of Changes In Surface Water Regime And/Or Land Use On The Vertical Distribution Of Water Available For Wetland Vegetation: Dynamic Model Of The Zone Of Aeration (Part 1 Of Completion Report For Project A-023-Ark), Robert N. Maccallum, R. A. Sims Jun 1980

Effects Of Changes In Surface Water Regime And/Or Land Use On The Vertical Distribution Of Water Available For Wetland Vegetation: Dynamic Model Of The Zone Of Aeration (Part 1 Of Completion Report For Project A-023-Ark), Robert N. Maccallum, R. A. Sims

Arkansas Water Resources Center Technical Reports

A mathematical model by Green, simulating one-dimensional vertical ground-water movement in unsaturated soils of the prairie region of Kansas, has been adapted for use in a wetlands environment typified by the wetlands forest of Eastern Arkansas. The model consists of two second-order, non-linear, partial differential equations and an algorithm for their numerical solution. The original model was extended to include functions for seasonal changes in transpiration and for drainage of excess precipitation. Before the addition of the two functions, the model reliability was limited to one growth season.