Physical Sciences and Mathematics Commons^™

Primary Production And Carbon Allocation In Creosotebush: The Effect Of Leaf Age On Net Gas Exchange Capacity, J.P. Syvertsen, G.L. Cunningham

Memorandum

No abstract provided.

Plant Demographic Studies Of Desert Annual Communities In Northern Utah Dominated By Non-Native Weedy Species, D.R. Duba, B.E. Norton

Memorandum

No abstract provided.

Distribution Of Microorganisms In Desert Soil, A. T. Vollmer, F. Au, S. A. Samberg

Progress reports

No abstract provided.

Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, P. L. Comanor

Progress reports

No abstract provided.

Measurements Of Carbon And Nitrogen Changes In A Desert Soil, E. E. Staffeldt, K. B. Vogt

Progress reports

No abstract provided.

Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, W. A. Jury, L. H. Stolzy, J. Letey Jr., L. V. Weeks

Progress reports

No abstract provided.

Programming Phase Of Water Response Ecosystem Model: Ii. Abiotic Submodels, P. W. Lommen, K. A. Marshall

Progress reports

No abstract provided.

Gas Exchange, Translocation, Root Growth And Soil Respiration Of Great Basin Plants, M.M. Caldwell, L.B. Camp, R.S. Holthausen, H. Nueber

Progress reports

No abstract provided.

Nitrogen Retention In Cool Desert Soils, J. J. Skujins

Progress reports

No abstract provided.

Programming Phase Of Water Response Ecosystem Model: I. Introduction And Support Programs, P. W. Lommen

Progress reports

No abstract provided.

Programming Phase Of Water Response Ecosystem Model Iii. Animal Submodel, J. E. Heasley

Progress reports

No abstract provided.

Programming Phase Of Water Response Ecosystem Model: Iv. Perennial Plant, Nitrogen And Decomposition Submodels, P. W. Lommen, D. C. Wilkin

Progress reports

No abstract provided.

Nitrogen Transformations In Rock Valley And Adjacent Areas Of The Mohave Desert, R. B. Hunger, A. Wallace, E. M. Romney

Progress reports

No abstract provided.

Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J.H. Brown, D.W. Davidson

Progress reports

No abstract provided.

Seasonal Use Of Soil Moisture By Larrea Tridentata And Ambrosia Deltoidea, D. R. Cable

Progress reports

No abstract provided.

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System - Volume Ii - Effects Upon The Phytoplankton Associations, Myra Mcnutt, Richard L. Meyer

Technical Reports

Phytoplankton are a major source of primary production in aquatic ecosystems and constitute one of the most important assemblages of the biotic community. These organisms are the basic level of the trophic pyramid upon which other organisms are dependent. The development, maintenance, and environmental influence of phytoplankton in and on the aquatic ecosystem has been a subject of interest and concern for many years. Most of the studies concerning the nature and distribution of phytoplankton have been confined to lacustrine systems. Hutchinson (1967), citing several lake studies, sutmarized various aspects of the physical and chemical factors associated with phytoplankton. These …

Shoreline Situation Report Cities Of Chesapeake, Norfolk, And Portsmouth, Dennis W. Owen, Lynne M. Rogers, Margaret H. Peoples, Robert J. Byrne, Carl H. Hobbs Iii

Reports

It i s the objective of this report to supply an assessment, and at least a partial integration, of those important shoreland parameters and characteristics which will aid the planners and the managers of the shorelands in making the best decisions for the utilization of this limited and very valuable resource. The report gives particular attention to the problem of shore erosion and to recommendations concerning the alleviation of the impact of this problem. In addition, we have tried to include in our assessment a discussion of those factors which might significantly limit development of the shoreline and, in some …

Ecological Study Of The Tidal Segment Of The James River Encompassing Hog Point : 1975 Final Technical Report, R. A. Jordan, R. K. Carpenter, P. A. Goodwin, C. G. Becker, M. S. Ho, G. C. Grant, B. B. Bryan, J. V. Merriner, A. D. Estes

Reports

Volume 1: Technical Reports

• Section 1: River Biota and Phytoplankton Entrainment Studies at the VEPCO Surry Nuclear Power Station
• Section 2: Zooplankton Entrainment at the Surry Nuclear Power Plant, James River, Virginia by G. C. Grant and B. B. Bryan
• Section 3:
• a. Plant Entrainment of Ichthyoplankton at the VEPCO Nuclear Power Station by J. V. Merriner and A. D. Estes
• b: Thermal Plume Entrainment of Ichthyoplankton at the· VEPCO Nuclear Power Station by J. V. Merriner and A. D. Estes

1976 Pasture Species Investigations - Wheatbelt, N. R. Mckeown

Experimental Summaries - Plant Research

Trials in Progress. Only four grazing trials were continued in 1976. The pasture species and management trial at Moora (68M023) required a disproportionate amount of available work time. About 6 man-months were spent in completing the fencing, repairing and modifying the water system and increasing the working efficiency of the experiment. Sheep were reintroduced to the trial early in June. This report summarizes the results from the trials under the following headings:- Seasonal Conditions; Grazing Trials;, Legume Grazing Management Trial, West Moora - 68M023; Comparison of Production from Cyprus Medic and Volunteer Pasture - 71LG17; Tornafield Medic, Serradella and Subterranean …

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume V - The Effects Upon The Fish Population, Thomas M. Buchanan

Technical Reports

The Arkansas River extends for 1,450 miles from the eastern slopes of the Rocky Mountains in Colorado, southeasterly through Kansas, Oklahoma, and Arkansas, where it enters the Mississippi River in Desha County. The 448 mile navigation channel which was constructed on the lower portion of this river includes portions of two of its major tributaries, the Verdigris River in Oklahoma and the lower White River in Arkansas. The Arkansas portion of this navigation system consists of three different segments: (1) the lower White River, from its confluence with the Mississippi River to 10 miles upstream, (2) the Arkansas Post Canal, …

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume Iv - The Effects Upon The Benthic Associations, Louise Russert Kraemer

Technical Reports

The huge and increasing volume of dredged materials being moved in and from the bottoms of waterways of the U.S. is probably well known to the reader. Lee and Plumb (1974) distinguish between the 2 forms of dredging: (1) mining the bottom sediments (as in shell dredging), and (2) developing and maintaining navigable waterways. They indicate some 380,000,000 cubic yards are dredged annually in this country; maintenance dredging accounting for about 80,000,000 cy, and new construction for about 300,000,000 cy.* These figures (based on 5 yr. averages) do not include dredging by private companies. Smith (1975) comments: "With federal dredging …

Private Water Supplies, Maine Department Of Human Services

Maine Collection

Private Water Supplies

Department of Human Services, Augusta, Me. (Reprinted 1976).

Contents: Introduction / General Requirements / Types of Private Water Supplies / Procurement of Safe Water / Distribution / Appendix A & B

Salt Encroachment : The 1974 Saltland Survey, C V. Malcolm, R. C. Stoneman

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

It has long been recognised that the clearing of land for agriculture in the south western Australia is followed by the development of saline soils and streams.

In 1955 and again in 1962, in conjunction with the annual statistical returns, farmers in Western Australia were asked to supply estimates of salt-affected land on their properties.

In 1974 a further survey was conducted, in co-operation with the Australian Bureau of Statistics, using questions covering only the basic information. As the information is again available on a Shire basis a direct comparison can be made with the 1962 survey except for some …

Sealing Farm Dams, I A F Laing, R. G. Pepper

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

Research over the past 10 years has shown that it is technically possible to seal many leaking farm dams. In some situations a cheap chemical treatment is effective but in most cases it is cheaper to construct a replacement dam.

This article reviews the situation in western Australia and outlines some of the methods used for sealing dams.

Comparison Of Economic Returns From Grain Crops, H M. Fisher

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

While wheat is still generally the most profitable crop in Western Australia the relative profitability of barley and linseed has risen in the last few years; in southern areas they are likely to be at least as profitable as wheat.

Oats has fallen in profitability relative to wheat, and grain legumes have suffered a marked fall. Yields of these grains have increased with the introduction of new varieties but their price increases have not kept pace with those of wheat and barley. The present relationship of yields and costs indicates that substantial price changes will be needed to change the …

A Comparison Of Hay Conservation Systems, E E. Rowley

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

The high cost an dshortage of farm labour in the Esperance District is posing serious problems for farmers using traditional hay conservation systems. Author Ted Rowley, then an advisor with the Esperance District office of the Department of Agriculture surveyed a number of farms to study the economics of varoius alternatives. This article is a summary of his report presented to a 1976 Fodder Conservation Workshop.

Application Of A Hydrologic Model To The Planning And Design Of Storm Drainage Systems For Urban Areas, George B. Shih, Eugene K. Israelsen, Robert N. Parnell, Jr., J. Paul Riley

Reports

A generally applicable hybrid computer program is developed to simulate runoff from urban watersheds, and is applied to represent the outflow hydrographs of three urban watersheds located within Salt Lake County, Utah. The gaged outflow of the watersheds provided a means for comparing the observed and the simulated final outflow hydrographs. Each of the three watersheds was subdivided into spatial units or subzones, and the outflow hydrographs for each subzone were obtained by abstracting interceptions, infiltration, and depression storage from the rainfall hyetograph of each subzone. The resulting hydrograph outflow of each subzone was routed to the Jordan River, the …

An Economic Appraisal Of Reuse Concepts In Regional Water Supply Planning, Rangesan Narayanan, Bartell C. Jensen, A. Bruce Bishop, Kenneth S. Lyon

Reports

Using a conceptual model of a water supply firm, the necessary conditions for production and market efficiency are derived when renovated wastewater is considered as a potential water resource. The nature and extent of the supply augmentation due to recycled reuse is demonstrated using classical optimization techniques. Three stages of short-run supply corresponding to no recycling, partial recycled reuse and complete recycling of all reclaimable water are identified through appropriate Lagrangian Multipliers as well as graphical techniques. A mathematical programming model is structured to determine the optimal water resource allocation and pricing policy for Salt Lake County. By maximizing the …

Management Of The Great Salt Lake: A Research Plan And Strategy, Craig T. Jones, Calvin G. Clyde, J. Paul Riley

Reports

The primary purposes of this report are to indicate the following two research items in connection with the management of the water resource system of the Great Salt Lake:\ 1. Research needs and priorities. 2. A research coordination strategy. Research needs are identified by the report in terms of (1) various management, or use, categories (such as lake industries), and (2) the need to understand the physical characteristics of the lake system itself. The research needs are identified in each category as information (including data) or understanding gaps, in cases where there seems to be sufficient information, a research need …

Bsam: Basin Simulation Assessment Model Documentation And User Manual, Utah Water Research Laboratory

Reports

No abstract provided.