Physical Sciences and Mathematics Commons^™

Variation Of Whole Body Components As An Indicator Of Habitat Quality In Geomys Bursarius And Peromyscus Maniculatus, Joseph W. Nietfeldt

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

No abstract provided.

The Application Of Laser Intracavity Absorption Detector To Gas Chromatography Of Trace Organic Pollutants In Water, Robert B. Green

Technical Reports

A helium-neon (HeNe) laser operating simultaneously at 3.39 um (infrared) and 0.63 um (visible) has been used as a selective detector for hydrocarbons in the effluent of a gas chromatograph. The infrared and visible laser transitions originate at the same energy level and are competitive. When a hydrocarbon enters the laser's resonant cavity, the 3.39 um energy is absorbed due to the C-H stretching vibration and the visible emission is enhanced. The visible laser emission is monitored with a photodiode as a quantitative measure of the concentration of the absorbing molecule. The minimum detectable concentration for propane using the double-beam …

Volume 6, Number 12 (December 1982), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.

Effects Of Wastewater Discharges On Periphyton Growth In Lake Mead, Nevada-Arizona, Marsha Korb Morris

Publications (WR)

A study of the effects of secondary-treated wastewater on periphyton growth in Lake Mead, Nevada-Arizona was conducted from September 1979 to December 1980. Periphyton ash-free dry weight, chlorophyll-a, dominant species composition, and alkaline phosphatase activity were measured on fiberglass substrates. Substrates were incubated for two to four weeks in littoral and limnetic habitats. Physical and chemical variables and phytoplankton chlorophyll-a were measured concurrently.

Transparency increased with increasing distance from the discharge. Secchi depth ranged from 0.75 m at the discharge confluence (station 2) in August, to greater than 20 m at the most distant stations (stations 9 and 10) in …

Mass And Energy Exchanges Of Soybeans: Microclimate-Plant Architectural Interactions, Dennis D. Baldocchi

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

No abstract provided.

Water Current, Volume 14, No. 6, November/December 1982

Water Current Newsletter

Water Seminars to Begin in January
1983 Nebraska Water Conference
Irrigation Short Course in January
Research Review: Water and Energy Conservation Using Center Pivot Irrigation and Reduced Tillage Systems
Paper Presented on Nitrates in Groundwater
NWRC Conference Held in Kearney
Water Resources Expertise Directory Compiled
Water Financing Needs Discussed
Call for Papers
Editor Resigns

Volume 6, Number 11 (November 1982), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.

A Faunal And Seasonal Study Of The Aquatic Insects In Two Water Ecosystems In South Arkansas: Degray Reservoir And The Upper Cadda River, Robert T. Allen

Technical Reports

The impounding of the lower Caddo River to create DeGray Reservoir radically changed the water habitats in that portion of the Caddo River. A number of new and different habitats were created by the lake. The objective of this study was to determine what, if any, differences existed between the aquatic insect biotas of DeGray Reservoir and the upper Caddo River. Four collecting stations along the shore of DeGray Reservoir and four stations along the upper Caddo River were selected as sampling sites. Collections were made at one month (March, April, Oct., Nov.) intervals or at two week intervals (May, …

Volume 6, Number 10 (October 1982), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.

Water Current, Volume 14, No. 5, September/October 1982

Water Current Newsletter

Research Framework Now Available
Overview Highlights Project
Computer Used to Irrigate
Conservation Tillage Studied
Aiken Says Law Vague
Sandhills NebGuides
OWRT Funds Transferred
Federal Funding Possibilities
New Staff Members

Volume 6, Number 9 (September 1982), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.

Effects Of Water On The Fate Of Herbicides In Irrigated Soils, Terry L. Lavy

Technical Reports

The wide use of soil-applied herbicides necessitates an understanding of their fate in soil if we are to use them in the most beneficial manner. All herbicides have some degree of water solubility and the field performance of many are dependent on ample, timely availability of soil moisture. It is important that different aspects of soil-herbicide-water interactions be thoroughly investigated. An excess use of water for irrigation purposes can result in the downward movement of herbicides in the soil profile. Subsoils are less adsorptive and a decreased degradation potential exists when herbicides move below the top 15 cm. In sandy …

Atrazine Degradation, Sorption And Bioconcentration In Water Systems, Duane C. Wolf, Ramon L. Jackson

Technical Reports

The herbicide atrazine is used extensively to control broadleaf and grass weeds in such crops as sorghum and corn. A small portion of the atrazine may be lost from the area of application by surface runoff and could enter a stream or lake. The objective of this study was to evaluate atrazine degradation, sorption, and bioconcentration in watersediment systems. The results indicated that sediments with lower pH values and higher organic matter levels adsorbed higher levels of atrazine than sediments with neutral pH values and lower organic matter levels. Microbial decomposition of the herbicide was slow under the conditions of …

Volume 6, Number 8 (August 1982), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.

Groundwater In The Inner Bluegrass Karst Region, Kentucky, John Thrailkill, Lawrence E. Spangler, William M. Hopper Jr., Michael R. Mccann, Joseph W. Troester, Douglas R. Gouzie

KWRRI Research Reports

The hydrogeology of about 12% of the 5600 km² Inner Bluegrass Karst Region of central Kentucky was investigated by water tracing and other techniques. Using fluorescent dyes adsorbed on fabric and charcoal detectors, 96 traces (average length 2.7 km, maximum length 15 km) resulted in the identification of 38 groundwater basins (with areas up to 15 km²). Within the basins, subsurface flow is in a dendritic conduit system at depths up to 30 m below the surface, while in the interbasin areas which separate them flow is generally less than 5 m deep. Each groundwater basin discharges …

Water Current, Volume 14, No. 4, July/August 1982

Water Current Newsletter

Platte River Forum Develops Model
Update on Fed Funds
Pollution Manual Ready
Dee Creek Study Over
Farewells
Paper Wins ASAE Award
NU Manual Wins Award
Recharge Studied at Lake
ET Program Available
NWRC at Conference
Research Review: Improvement of Irrigation Scheduling Techniques for Corn With Variable Crop Maturity Range, Plant Population and Water Supply Availability.

Some Variations In Distribution Of Fishes In Large Mainstream Reservoirs Associated With Artificial Cover, Donald W. Johnson, Elizabeth M. Choinski

KWRRI Research Reports

The influence of artificial cover (brush piles) on fish populations in Kentucky Lake and Lake Barkley was studied. Mature and larval fishes were collected from deep and shallow sites with and without cover in a bay of each lake. Highest densities of mature crappie, bass, and sauger were found adjacent to deep attractors, while larval crappie and minnows were most concentrated at shallow brush piles. Shad (both adult and larvae) were not congregated at attractor sites. Information gathered supports the continuation of artificial cover installation and water level management procedures which will provide high and stable levels through spring spawning …

Volume 6, Number 7 (July 1982), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.

An Ecological Analysis Of Relic Diatoms In Sediments Of Las Vegas Bay, Lake Mead, David Ross Hetzel

Publications (WR)

Relic diatoms in sediments of the inner Las Vegas Bay, near the Las Vegas Wash sewage inflow, were examined in order to assess historic trophic conditions in this area of Lake Mead. Diatom sedimentation rates and ratios of Araphidineae/Centrales (A/C) diatom groups were determined from sediment cores collected in the old wash channel 1.5 km from the sewage inflow (station 2), in a small cove 1.5 km further downstream (station 3) and in an adjacent embayment off Gypsum Wash (station 4). Diatom sedimentation rates generally increased from the bottom to the top of each core, but pronounced minima existed at …

Water Problems & Issues Affecting United States-Mexico Relations: Policy Options & Alternatives, Albert E. Utton

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

42 pages.

Contains 6 pages of endnotes.

The Sale, Lease Or Exchange Of Indian Water Rights For Energy Development, Thomas W. Fredericks

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

34 pages.

Contains references.

Weather Resources Management And Interbasin Transfer Law [Outline], Ray Jay Davis

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

21 pages (includes illustrations).

A Case Study Of The Windy Gap Project [Outline], John M. Sayre

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

7 pages.

The California State Water Project, Jerry Meral

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

27 pages.

The Central Arizona Project, Jon Kyl

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

38 pages (includes illustrations).

Contains footnotes.

Contains 9 attachments.

New York City’S Battles For Imported Water, J. Kevin Healy

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

16 pages (includes illustrations and maps).

A Case Study: The Yellowstone River, Donald Mcintyre

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

106 pages (includes maps).

Contains 15 appendices.

The Metropolitan Water District Of Southern California [Outline], Carl Boronkay

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

4 pages.

El Paso/New Mexico Controversy [Outline], John P. Frank

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

3 pages.

Constitutional Restraints On Protecting State Interests In Water Rights, Charles E. Corker

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

33 pages.

Contains references.