Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Environmental Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 19321 - 19350 of 19870

Full-Text Articles in Entire DC Network

Water Current, Volume 10, No. 2, March/April 1978 Mar 1978

Water Current, Volume 10, No. 2, March/April 1978

Water Current Newsletter

Guest Editorial, Paul Fischbach
Guernsey Silt Run Project
Staff Activities
Water Resources in Nebraska
Reclamation Invites State Participation in Dam Safety Review
President Comments on University Research
How Dependable is the Nation's Water Supply?
Study on 160-Acre Limitation
Dr. H. William Menard, Jr., to Direct Expanded Programs as New Head of the U.S. Geological Survey
Frank Gregg Appointed to BLM Head
Research Review: Evaluate Hydrologic Effects of Implementing Various Levels of Control on Irrigation Activities


Preliminary Benefit Analysis Of Endrin Use On Apple Orchards, Mark A. Luttner Feb 1978

Preliminary Benefit Analysis Of Endrin Use On Apple Orchards, Mark A. Luttner

Eastern Pine and Meadow Vole Symposia

This article summarizes the Preliminary Benefit Analysis of Endrin Use on Apple Orchards of September, 1977. The analysis was prepared to be an input to the risk/benefit decision by the Administrator of EPA as to the continued registration of endrin under FIFRA, as amended. A notice of rebuttable presumption against registration (RPAR) of endrin was Issued in the Federal Register on July 27, 1976. If the data on human health and or environmental risks cited in the RPAR are not rebutted and risks outweigh benefits, the Administrator may announce intent to cancel the apple orchard registrations of endrin. This report …


Extreme Evapotranspiration By Irrigated Alfalfa: A Consequence Of The 1976 Midwestern Drought, Norman J. Rosenberg, Shashi B. Verma Feb 1978

Extreme Evapotranspiration By Irrigated Alfalfa: A Consequence Of The 1976 Midwestern Drought, Norman J. Rosenberg, Shashi B. Verma

National Drought Mitigation Center: Faculty Publications

The rate of evapotranspiration by irrigated alfalfa at Mead, NE (41°09'Nj 96°30'W, elevation 354 m) reached record levels in 1976. Evapotranspiration was measured with precision weighing lysimeters in a field 1.9 ha in size. Evapotranspiration ranged during the growing season from 4.75 to 14.22 mm day-l and exceeded 10 mm day-I on one-third of the days studied. On each day of study the ratio of latent heat flux density (LE) to the sum of the net radiation and soil heat flux densities (Rn+S) was such that LE/ (Rn+S) > 1, indicating the occurrence of significant …


Local And Regional Components Of Sensible Heat Advection, Thomas W. Brakke, Shashi B. Verma, Norman J. Rosenberg Feb 1978

Local And Regional Components Of Sensible Heat Advection, Thomas W. Brakke, Shashi B. Verma, Norman J. Rosenberg

School of Natural Resources: Faculty Publications

Detailed knowledge of the advection of sensible heat is necessary to understand the energy balance of the evaporating surface in many parts of the world. Sensible hear advection can result from regional and/or local sources. The local and regional components of sensible heat advection (Aloc and Areg, respectively) are identified and their magnitudes in a semi-arid to sub-humid zone are established in the work reported here. Measurements of dry- and wet-bulb air temperature, wind speed and net radiation were made above an irrigated alfalfa field with relatively dry surrounding upwind at Mead, NE. A modified Bowen ratio-energy balance method which …


Critical Evaluation Of The Pulsed-Current Resistance Meter For Detection Of Decay In Wood, Douglas D. Piirto, W. Wayne Wilcox Jan 1978

Critical Evaluation Of The Pulsed-Current Resistance Meter For Detection Of Decay In Wood, Douglas D. Piirto, W. Wayne Wilcox

Natural Resources Management and Environmental Sciences

An evaluation of a pulsed-current resistance meter ("Shigometer®", Model No. 7950) for facilitating detection of decay was performed on wood blocks of giant sequoia heartwood and of white fir sapwood. As decay progressed over a 12-week incubation period, a trend of lower meter readings was obtained, confirming reported field measurements of other workers. Variability in meter readings in situations where the range in resistance readings between sound and decayed wood is narrow (e.g., giant sequoia heartwood) and apparent inability of the meter to make readings necessary to diagnose decay at MCs common to wood in service without ground or water …


Producing 20-Month Old Beef Steers Off Annual Pasture, K D. Greathead, D. J. Barker, W. J. Ryan Jan 1978

Producing 20-Month Old Beef Steers Off Annual Pasture, K D. Greathead, D. J. Barker, W. J. Ryan

Journal of the Department of Agriculture, Western Australia, Series 4

A recent Mt Barker experiment compared two systems of fodder conservation with continuous grazing, using two types of steers, at three stocking rates. Year-round performance, carcass composition, and resulting costs and returns per hectare were assessed.

Production per hectare was greatest from crossbred steers at the intermediate stocking rate with either type of fodder conservation.


Itasca Park Wilderness Sanctuary: Joint Effort Of Academy And State, John Herhusky Jan 1978

Itasca Park Wilderness Sanctuary: Joint Effort Of Academy And State, John Herhusky

Journal of the Minnesota Academy of Science

This review of the history of the unique Wilderness Sanctuary in Itasca State Park was prepared from remarks by the park manager at the introductory session of the 1978 fall meeting of the Minnesota Academy of Science at Itasca Park.


Interstate 15 Through The Bear River Valley, U.S. Department Of Transportation Jan 1978

Interstate 15 Through The Bear River Valley, U.S. Department Of Transportation

Elusive Documents

No abstract provided.


The Utah Ecology Project: Ecological Impact Of Weather Modification Studies In The Uinta Mountains, United States Deparment Of The Interior, Bureau Of Reclamation Jan 1978

The Utah Ecology Project: Ecological Impact Of Weather Modification Studies In The Uinta Mountains, United States Deparment Of The Interior, Bureau Of Reclamation

Elusive Documents

The Uinta Mountains are located in extreme northeastern Utah and

northwestern Colorado. The major portion of the range and all areas

rising above 3,050 m (10,000 ft) lie within five Utah counties (Daggett,

Duchesne, Summit, Uintah and Wasatch). The high elevation segment of

the range in Utah is commonly referred to as the High Uintas. This

report will consider only the so-called High Uintas.


Proposal To The National Science Foundation For The Desert Biome Program January 1, 1977-June 30, 1978, Frederic H. Wagner Jan 1978

Proposal To The National Science Foundation For The Desert Biome Program January 1, 1977-June 30, 1978, Frederic H. Wagner

Progress reports

No abstract provided.


Plants As Pumps, E A N Greenwood Jan 1978

Plants As Pumps, E A N Greenwood

Journal of the Department of Agriculture, Western Australia, Series 4

Native species vary greatly in their ability to pump ground water.

CSIRO studies are measuring water use by different plants to plan revegetation strategies.


Extreme Evapotranspiration By Irrigated Alfalfa: A Consequence Of The 1976 Midwestern Drought, Norman J. Rosenberg, Shashi Verma Jan 1978

Extreme Evapotranspiration By Irrigated Alfalfa: A Consequence Of The 1976 Midwestern Drought, Norman J. Rosenberg, Shashi Verma

School of Natural Resources: Faculty Publications

The rate of evapotranspiration by irrigated alfalfa at Mead, NE (41°09'N; 96°30'W, elevation 354 m) reached record levels in 1976. Evapotranspiration was measured with precision weighing lysimeters in a field 1.9 ha in size. Evapotranspiration ranged during the growing season from 4.75 to 14.22 mm day–1 and exceeded 10 mm day­–1 on one-third of the days studied. On each day of study the ratio of latent heat flux density (LE) to the sum of the net radiation and soil heat flux densities (Rn+S) was such that LE/ (Rn+S) > 1, indicating the occurrence of significant sensible heat advection. On …


Landform, Natural Drainage And Salinity, Eric Bettenay Jan 1978

Landform, Natural Drainage And Salinity, Eric Bettenay

Journal of the Department of Agriculture, Western Australia, Series 4

An understanding of salt movement in streams and groundwater may lead to better methods of control and prevention of salinity.


Soil Salinity In Western Australia : A Summary, T C. Stoneman Jan 1978

Soil Salinity In Western Australia : A Summary, T C. Stoneman

Journal of the Department of Agriculture, Western Australia, Series 4

Soil salinity problems have long been recognised in Western Australia. The earliest published explanation in 1924 suggested that removing native vegetation increased stream salinity, and this basic cause has been confirmed by many studies since.


The Impact Of Energy Resource Development Of Water Resource Allocations, John E. Keith, K. S. Turna, Sumol Padunchai, Rangesan Narayanan Jan 1978

The Impact Of Energy Resource Development Of Water Resource Allocations, John E. Keith, K. S. Turna, Sumol Padunchai, Rangesan Narayanan

Reports

This research used a linear programming model of the agricultural and energy sectors of Utah to examine the economically efficient allocation of water between agriculture and energy. Data were collected for agricultural returns, costs, and water requirements; energy returns, costs, and water requirements; and water supply costs. Results indicate that if large scale energy development occurs in the Colorado River Basin in Utah, most of irrigated agriculture will be eliminated, given Utah’s consumptive use constraint under the Upper Colorado Rive Compact. On the other hand, for two more “probable” levels of energy development, including the Energy Research and Development Administration’s …


Hydraulic Characteristics Of Pvc Pipe In Sanitary Sewers (A Report Of Field Measurements), Ronald R. Bishop Jan 1978

Hydraulic Characteristics Of Pvc Pipe In Sanitary Sewers (A Report Of Field Measurements), Ronald R. Bishop

Reports

Introduction: Since pipe made of poly vinyl chloride (PVC) is relatively new, its hydraulic characteristics that cause fluid friction head loss are not as well known as those of cast iron and concrete pipe. The lack of universally accepted roughness parameters for PVC pipe is attested by the fact that most textbooks dealing with the hydraulics and the fluid mechanics do not include such values. The hydraulic characteristics of PVC pipe have been measured in the laboratory studies for both open channel flow conditions, Neale and price (1), and for full flow conditions, Jeppson (2). However, no studies are known …


Social And Spatial Relationships Of Coyote Families And Neighboring Coyotes, Althoff D. P. Jan 1978

Social And Spatial Relationships Of Coyote Families And Neighboring Coyotes, Althoff D. P.

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Water Movement Through Soil, R A. Nulsen Jan 1978

Water Movement Through Soil, R A. Nulsen

Journal of the Department of Agriculture, Western Australia, Series 4

Even a good quality stock water moving to the surface can cause a salinity problem in only a few years.


The Dryland Salinity Problem In North America, P R. George Jan 1978

The Dryland Salinity Problem In North America, P R. George

Journal of the Department of Agriculture, Western Australia, Series 4

North america also has a dryland salinity problem although the source is different.


Cost-Effectiveness Of Air Pollution Control In Illinois, 1970-1976, Timothy E. Sullivan Jan 1978

Cost-Effectiveness Of Air Pollution Control In Illinois, 1970-1976, Timothy E. Sullivan

Masters Theses

No abstract provided.


A National Approach For Marine Scientific Research In Exclusive Economic Zones, Thomas H. Brillat Jan 1978

A National Approach For Marine Scientific Research In Exclusive Economic Zones, Thomas H. Brillat

Marine Affairs Theses and Major Papers

After years of constant negotiations at the Third United Nations Conference of the Law of the Sea (UNCLOS III), no new codified law for the seas has been produced. It appears certain, though, that countries throughout the world will exercise some form of sovereignty or national jurisdiction over an Exclusive Economic Zone (EEZ) extending 188 miles into the ocean beyond a twelve mile territorial sea. Included in this jurisdiction will be the control of marine scientific research (MSR). A need has arisen to establish a uniform procedure for the conduct of MSR to the mutual advantages of the coastal state, …


Interagency Conflict And Its Effect On Intermodal Shipping, Gerald Seifert Jan 1978

Interagency Conflict And Its Effect On Intermodal Shipping, Gerald Seifert

Marine Affairs Theses and Major Papers

The movement of goods by more than one mode of transportation in a single container has been viewed by some in the marine component of the transportation industry as a transformation a important as the coming of steam. Concerns with intermodalism and the difficulties faced in addressing the needs presented by the technologically enhanced maritime transportation industry do not start with the invention of the first multi-package container capable of being moved by several modes of transportation without need to repack; they start with an exploration of the perceived need to regulate the several components of the transportation industry, the …


A Proposal For A World Ocean Management Authority: As An Alternative Ocean Regime To Meet The Challenge Of The Management And Utilization Of Collective Ocean Activities, Simon W. Tache Jan 1978

A Proposal For A World Ocean Management Authority: As An Alternative Ocean Regime To Meet The Challenge Of The Management And Utilization Of Collective Ocean Activities, Simon W. Tache

Marine Affairs Theses and Major Papers

The oceans may be an alternative source of resource supply offering the opportunity for extensive practical uses. A number of ocean systems have been instituted to manage the exploitation of ocean resources including the practice of states to negotiate and enter into bilateral and multilateral agreements on a variety of ocean activities; but the complexities as well as the tendency of some of these ocean uses to generate extraterritorial effects, accentuate the need for a global response to alleviate these problems. Isolated individual national regulations and standards lack international uniformity to ensure adequate and rational utilization of the oceans and …


Bulletin 4048: Salt Land And What To Do About It, C V. Malcolm Jan 1978

Bulletin 4048: Salt Land And What To Do About It, C V. Malcolm

Bulletins 4000 -

Since the development of land for agriculture in Western Australia more than 1 600 square kilometres of land has become too saline for normal crops and pasture, and the area is increasing. Much of this land was previously the most fertile crop land and on some farms salinity constitutes a major problem.

The purpose of this booklet is to impart an understanding of the nature and cause of saltland in Western Australia. The methods of treatment are explained in the light of this understanding. The material in the booklet is based on a detailed review 'Soil salinity in South Western …


Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore Dec 1977

Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore

Arkansas Water Resources Center Technical Reports

No abstract provided.


An Annotated Bibliography Of Ocs Documents In Maine, Maine State Planning Office Oct 1977

An Annotated Bibliography Of Ocs Documents In Maine, Maine State Planning Office

Maine Collection

An Annotated Bibliography of OCS Documents in Maine

Outer Continental Shelf Memorandum 1

Compiled by Edward H. Shenton & Charles S. Colgan

Maine Coastal Program, Maine State Planning Office, Augusta, Maine, 1977.

Contents: 1. Introduction / 2. OCS - General / 3. OCS - Federal Regulations / 4. Economic Aspects / 5. Environmental Studies / 6. Oil Spills - Effects and Studies / 7. Onshore Effects / 8. The North Sea Experience / 9. Legal Aspects / 10. Petroleum Drilling Technology


Water Conservation In Industrial Filtration Operations, Jim L. Turpin Sep 1977

Water Conservation In Industrial Filtration Operations, Jim L. Turpin

Arkansas Water Resources Center Technical Reports

The washing of a solute from filter cakes was investigated for both saturated and unsaturated washing conditions. Systems used in this experimental study were 0.065 NaCl solution as the filtrate in an aluminum hydrate filter cake and 0.1 Normal HCL solution as the filtrate in a column packed with glass beads. The filtrate concentration as a function of the flow rate of wash water and of the volume of effluent from the packed bed was measured. The amounts of filtrate removed from the bed during saturated washing, and washing employing repetitive steps of saturation followed by evacuation were compared. Also, …


Water Current, Volume 9, No. 5, September/October 1977 Sep 1977

Water Current, Volume 9, No. 5, September/October 1977

Water Current Newsletter

From the Desk of the Director
Conference on Decisioni Making in Water Resources
Exchange Program Completed
Neuberger Appointed to Water Post
Short Course in Hydrology
Gary Cobb Named Director of OWRT
New Director for Water Resources Council
Interior Proposes New Rules for Disposal of "Excess" Irrigated Lands
USGS Director McKelvey to Leave Post January 1
Research Review: Mechanics and Potentials of Artificial Groundwater Recharge


The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977 Sep 1977

The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977

The Prairie Naturalist

UPLAND NESTING OF AMERICAN BITTERNS, MARSH HAWKS, AND SHORT-EARED OWLS ▪ H. F. Duebbert and J. T. Lokemoen

ROADSIDE NESTING BY PRAIRIE GROUSE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky

BOHEMIAN WAXWING POPULATIONS AND WINTER ECOLOGY IN NORTH DAKOTA ▪ E. L. Bakke

AGEING ARCHAEOLOGICAL BISON BY DENTAL ANNULI ▪ J. C. Pigage and M. G. McKenna

COMPARISON OF COYOTE AND COYOTE X DOG HYBRID FOOD HABITS IN SOUTHEASTERN NEBRASKA ▪ B.R. Mahan

NOTES

Abnormal Mid-May Occurrence of White-fronted Geese in Sheridan County, North Dakota ▪ D.P. Kibbe and J. A. Roppe

Common Grackle Preys on Spotted Sandpiper Chick ▪ …


The Prairie Naturalist Volume 9, No. 2. June 1977 Jun 1977

The Prairie Naturalist Volume 9, No. 2. June 1977

The Prairie Naturalist

PROPAGULE DISPERSAL AMONG FOREST ISLANDS IN SOUTHEASTERN SOUTH DAKOTA ▪ J. W. Ranney and W. C. Johnson

GENERAL WEATHER CONSIDERATIONS FOR THE PRESCRIDED BURNING OF PRAIRIE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky and R. W. Sands

YELLOW-CROWNED NIGHT HERONS SIGHTED IN NORTH DAKOTA ▪ D. G. Jorde, G. L. Krapu, and R. K. Green