Digital Commons Network^™

Broad Spectrum Microwave Systems For Remotely Measuring Soil Moisture Content, W. P. Waite, K. R. Cook, B. B. Bryan

Arkansas Water Resources Center Technical Reports

A theoretical and experimental study of the microwave reflectivity of soils with varying moisture content was conducted. A system was developed to measure reflectivity over a continuous frequency range of 4 to 26.5 GHz, at incidence angles from 10° to 70°, and with both horizontal and vertical polarization. The measurements were found to be extremely accurate for smooth homogeneous surfaces, however, the effects of surface roughness were found to be more severe than predicted due to the discontinuous nature of naturally occurring rough surfaces. An algorithm was developed which used the frequency dependence of the reflectivity to estimate the effective …

Mathematical Modeling Of Stream Storage Potential, Hugh M. Jeffus

Arkansas Water Resources Center Technical Reports

Streamflow data from unregulated streams in Arkansas were processed through Moran’s Model for a dam. The process involved calculating a cumulative gamma distribution for each stream as the streamflow values were incremented in units of 0.1 cubic feet per second per square mile of drainage area. This gamma distribution was then used as input for Moran’s Model. The output from Moran's Model includes the probability of the reservoir having zero contents as the size of the reservoir is decreased. The logarithm of the probability of zero contents, 1n PO, versus reservoir size, K, is a straight line of the form …

Environmental Improvement: A Concept For Harbor Maintenance Programs For Long Island Sound, John-Robert Curtin

Marine Affairs Theses and Major Papers

This paper suggests a comprehensive approach to maintenance dredging and maintenance dredge disposal for Connecticut in a carefully-regulated manner that will improve, rather than impair, the natural quality of the Sound. It proposes an interim measure that would allow for the continued operation of Connecticuts Commercial Harbor areas until a permanent program, together with the necessary technological advances, can be implemented to handle dredge disposal. This paper is based on data presently available on New Haven Harbor, presented in a report on the environmental quality of dredge spoils proposed to be removed from one area within New Haven Harbor known …

Pine Valley Validation Site, C.D. Jorgensen, G. Richins

Memorandum

No abstract provided.

Evaluation Of Critical Soil Properties Needed To Predict Soil Water Flow Under Desert Conditions, G. R. Mehuys, L. H. Stolzy, J. Letey Jr., L. V. Weeks

Memorandum

No abstract provided.

Annual Nutrient And Energy Intake Of The Desert Cottontail, Sylvilagus Auduboni, Under Natural Conditions, H G. Reynolds, F. J. Turkowski, R. M. Chew

Memorandum

No abstract provided.

Reproduction And Survivorship Of The Lizard, Uta Stansburiana, And The Effects Of Winter Rainfall, Density And Predation On These Processes, F. B. Turner, P. A. Medica, D. D. Smith

Memorandum

No abstract provided.

Jornada Validation Site Report, Walter G. Whitford

Memorandum

No abstract provided.

Consumption Of Larrea By Chewing Insects, F. G. Werner, A. R. Olsen

Memorandum

No abstract provided.

Animal Damage Control In South Dakota, V. Van Ballenberghe

Great Plains Wildlife Damage Control Workshop Proceedings

South Dakota, like virtually all other states, is subject to economic losses from wildlife depredations. We have been in the government sponsored, animal damage control business perhaps longer than some states - our history dates back to the time of Three-toes and the Custer Wolf. In 1973 we are still in that business, perhaps more intensively than ever before, and we regard animal damage control as one of the most pervasive and difficult to solve wildlife problems facing us.

The Missouri River bisects South Dakota into approximately equal "East River" and "West River" land areas. These differ ecologically, and to …

Using Population Mechanics In Management Schemes, Frederick F. Knowlton

Great Plains Wildlife Damage Control Workshop Proceedings

I. Why do we try to manage natural systems?

II. A Wildlife Management Perspective.

III. The challenge of managing carnivores.

IV. Does predation really occur?

V. Historically we have been faced with depredation problems and have been unable to resolve them when and where they arose.

VI. There have been vast changes in public sentiment and values.

VII. Let's look at some biological inputs ( coyotes).

VIII. Additional comments on meeting the problems when and where they occur.

IX. Selected readings.

A Study To Improve Dissolved Oxygen Analysis Techniques To Facilitate Water Quality Field Survey Applications, R. W. Raible, M. K. Testerman

Arkansas Water Resources Center Technical Reports

This report describes studies made of the temperature characteristics of dissolved oxygen electrodes having a large surface area. Large area electrodes proved to have much longer lifetime between rejuvenations. Many measurements of dissolved oxygen in water need to be made in field situations where recalibration techniques would be difficult and where making temperature corrections is time consuming for operators who may be making numerous measurements. This study was directed toward design of a compensation circuit for a dissolved oxygen electrode which will give the best possible measurement over a large water temperature range of 5° - 35°C without the necessity …

Kansas Predator Damage Control Program, F. Robert Henderson

Great Plains Wildlife Damage Control Workshop Proceedings

The Extension Division is the off-campus arm of Kansas State University~ a land grant university functioning through 105 county Extension offices involving over 265 county Extension workers that are backed up by some 175 state and area subject matter specialists. Kansas is an agricultural state. The production of livestock in Kansas is an important industry to our state and nation.

Our predator damage control program is an educational effort directed at the goal of reducing livestock losses where possible on individual farms and ranches, in Kansas. Our program has been in existence since 1954. A very important aspect of our …

Long Range Objectives Of The Federal Government In Coyote Management, James B. Ruch

Great Plains Wildlife Damage Control Workshop Proceedings

Introduction.

History.

Present Efforts to Change.

Research.

Interim Measures.

1973 Legislation.

State Actions Needed.

Conclusion.

An Assessment Of The Coyote Problem In The Great Plains States, Dale A. Wade

Great Plains Wildlife Damage Control Workshop Proceedings

It has now been 21 months since President Nixon's Executive Order #11643 was issued and there has been a complete annual reproductive cycle in the coyote population of the western states without any major influence by chemical controls. The use of mechanical controls, including non-lethal methods, and greater emphasis on removing only specific offending animals has been advocated during this time as a solution where coyotes prey on domestic animals. With this brief look back, what have been the results?

We do not have absolute data on coyote numbers and livestock depredations resulting from this change in coyote management programs. …

Fisheries Report No 12 - Results Of A Biological Survey Of A Proposed Wildlife Sanctuary At Dragon Rocks Near Hyden, Western Australia, N. L. Mckenzie, A. A. Burbidge, N. G. Marchant

Fisheries Research Reports

In 1972, three visits were made to an area of vacant crown lam 30 kilometres south-south~east of Hyden, Western Australia.

A preliminary survey was made in April 1972 and following this recommendations were made on the equipment and staff required for a detailed survey of the vegetation and animals.

From the 30th July to the 4th August 1972, a team from the Fauna Research Branch of the Department of Fisheries and Fauna began a detailed fauna survey.

Between the 20th August and the 25th August 1972, the fauna survey was continued am a botanist from the Western Australian Herbarium undertook …

Central Utah Project, Bonneville Unit: Final Environmental Statement, Bureau Of Reclamation; Department Of Interior

Elusive Documents

No abstract provided.

Tucson Validation Sites Report, John L. Thames

Memorandum

No abstract provided.

Rock Valley Validation Site Report, Frederick B. Turner

Memorandum

No abstract provided.

Density And Dietary Habits Of Pocket Gophers (Thomomy Bottae Centralie) In Rock Valley, R. E. Dingman, James Bandoli

Memorandum

No abstract provided.

Natural Activity Patterns And Thermal Experience In Dipodomys Merriani, W. O. Wirtz, D. V. Brown

Memorandum

No abstract provided.

Effect Of Density On The Population Dynamics Of Perognathus Formosus And Its Relationships Within A Desert Ecosystem, R. M. Chew, F. B. Turner, Peter August, Bernardo Maza, James Nelson

Memorandum

No abstract provided.

Role Of Annual Grasses And Shrubs In Nutrient Cycling Of Great Basin Communites, L. G. Kline, C. M. Mckell

Memorandum

No abstract provided.

Growth And Development Of Sitanion Hystrix And Poa Sandbergii, M. Hironaka, E. W. Tisdale

Memorandum

No abstract provided.

Model Of Net Co2 Exchange Rate For C-4 Grasses, G. L. Cunningham, F. R. Balding, J. P. Syvertsen

Memorandum

No abstract provided.

Phenology And Function Of Sonoran Desert Annuals In Relation To Environmental Changes, D. T. Patten, E. M. Smith

Memorandum

No abstract provided.

Gas Exchange, Translocation And Root Growth Of Cold Desert Plants, M. M. Caldwell, H. H. Wiebe, E. J. Depuit, Osvaldo Fernandez, L. B. Camp, Marcee Fareed

Memorandum

No abstract provided.

Gas Exchange And Productivity For Opuntia Spp., Irwin P. Ting, H. B. Johnson, T. A. Yonkers, S. R. Szarek

Memorandum

No abstract provided.

Productivity And Water Stress In Cacti, D. T. Patten, R. A. Nisbet

Memorandum

No abstract provided.

Plant Productivity And Nutrient Interrelationships Of Perennials In The Mohave Desert, Samuel Bamberg, Arthur Wallace, Gale Kleinkopf, Arthur Vollmer

Memorandum

No abstract provided.