Digital Commons Network^™

Land Capability Assessment Methodology For Rural-Residential Development And Associated Agricultural Land Uses, M R. Wells, Peter Donald King

Land resources series

No abstract provided.

Assessment Of Management Strategies For Reducing Land Degradation Problems In The East Perenjori Catchment, C J. Henschke, K J. Bligh, R Ferdowsian

Resource management technical reports

No abstract provided.

Leschenault Peninsula : A Study Of Land Resources And Planning Considerations, Veronica P M Oma

Resource management technical reports

Leschenault Peninsula is a fragile coastal dune barrier north of Bunbury, Western Australia. Most of the landforms are highly, or potentially highly, unstable and are not capable of sustaining tourism uses other than walking tracks. Minor areas close to Leschenault Inlet are more stable and could be developed for a range of tourism uses including accommodation and day tripper facilities. However, much of the Peninsula is highly degraded and susceptible to wind erosion, while disposal of acid-iron rich li id effluent from the Laporte (SCM) works in lagoons located within the dunes, has contributed to the visual degradation of the …

Riparian Plant Water Relations Along The North Fork Of The Kings River, California, J. L. Nachlinger, S. D. Smith, R. J. Risser

Life Sciences Faculty Research

Plant water relations of five obligate ripar-ian species were studied along California's North Fork Kings River. Diurnal stomatal conductance, transpi-ration, and xylem pressure potentials were measured throughout the 1986 growing season and in mid-season in 1987. Patterns were similar for all species although absolute values varied considerably. Maximum stomatal conductance occurred early in the day and season during favorable environmental conditions and decreased as air temperature and the vapor pressure difference between the leaf and air increased. Maximum transpiration rates occurred in mid-morning and mid-summer resulting in estimated daily water losses per unit sunlit leaf area of 163-328 mol H2O …

An Isotopic Analysis Of The Hydrology And Riparian Vegetation Water Sources On Bishop Creek, M. L. Space, J. W. Hess, S. D. Smith

Life Sciences Faculty Research

Five power generation plants along an eleven kilometer stretch divert Bishop Creek water for hydro-electric power. Stream diversion may be adversely affecting the riparian vegetation. Stable isotopic analysis is employed to determine surface water/ground-water interactions along the creek. surface water originates primarily from three headwater lakes. Discharge into Bishop Creek below the headwaters is primarily derived from ground water. The average δD and δ18O values are significantly different for surface water and ground water that an isotopic analysis can delineate between these two components of flow. Therefore isotopic shifts along the creek can determine gaining reaches. In addition, by knowing …

Leaf Optical And Indirect Lai Measurements In Wheat And Alfalfa At Maciv: Agmet Progress Report 89-4, E. A. Walter-Shea, B. L. Blad

School of Natural Resources: Documents and Reviews

Interpretation of remotely sensed vegetative surfaces requires an understanding of the interaction of radiation with the various components of vegetation. Leaves are the most important component. Thus it is important to know the optical properties of individual leaves as well as the amount and distribution of leaves making up the vegetative cover. The objectives of our study were 1) to characterize the reflectance from and transmittance through adaxial and abaxial surfaces of individual wheat and alfalfa leaves and 2) to compare the traditional, time-consuming, destructive method of estimating LAI (direct method) to a relatively quick, indirect estimate of LAI in …

Estimating Forage Values For Grazing National Forest Lands, United States Department Of Agriculture Economic Research Service

All U.S. Government Documents (Utah Regional Depository)

Every 5 years, the Forest Service is required to update its estimates of the value of Forest Service grazing. This report provides estimates of the maximum ability of ranchers to pay for Forest Service grazing. Abilities to pay vary greatly depending on the region of the country and assumptions about costs. Based on current cash costs, the value of Forest Service grazing is greater than the grazing fee. Based on longrun economic costs, the value of grazing is less than the grazing fee. In some regions of the United States, the longrun value of grazing is zero. These low longrun …

Predicting Timber Sale Costs From Sale Characteristics In The Intermountain West, U.S. Forest Service

All U.S. Government Documents (Utah Regional Depository)

This study provides an equation based method to estimate timber sale costs. Cost equations follow major appraisal cost categories.

Test Of Rpa Production Coefficients And Local Assumptions For The Pinyon-Juniper Ecosystem In Central Utah, U.S. Forest Service

All U.S. Government Documents (Utah Regional Depository)

This study fields test production assumptions, such as those for herbage and shrubs, developed in response to the Resources Planning Act.

Revegetation By Land Imprinter And Rangeland Drill, United States Department Of Agriculture, Forest Service

Wildfires

The land imprinter and rangeland drill were compared for revegetation of a wildfire burn in the Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) vegetation type. Seeding trials were conducted on strips 152 m wide and 1.6 km long. Seeded species were fairway wheatgrass (Agropyron cristatum), luna pubescent wheatgrass (A. trichophorum), Russian wildrye (Elymus junceus), and Ladak alfalfa (Medicago sativa). Severe wind erosion on the study area occurred the first spring. Total seeded plant densities and cover were significantly higher with the imprinting treatment. Production of seeded plants was higher on the imprinted areas the first 2 years; thereafter, compensatory growth …

Resources For Inventorying Plants In The Southeast Asian Tropics: Plans For The Future, J.S. Burley, P.F. Stevens, E.A. Wood

Biology Department Faculty Works

We aimed to cover two issues in this workshop; the third arose during the course of the discussion: 1. The need for an increased rate of collecting in the Southeast Asian tropical area (‘Malesia’ for short) if taxonomic decisions in the ‘Flora Malesiana’ and other taxonomic projects are to be soundly based and, more generally, if there are to be materials adequate for the future needs of taxonomy. 2. The likelihood that any attempt to increase collecting, or even simply to continue collecting at the present rate, without paying adequate attention to the distribution, mounting, and preservation of the specimens …

Determination Of The Suitability Of Arkansas River Water For Municipal, Industrial And Agricultural Use, James W. Moore

Arkansas Water Resources Center Technical Reports

River water samples from the five sites were collected by the U. S. Geological Survey (USGS) in accordance with their established sampling procedures. Samples for wet chemistry and atomic absorption analyses were delivered to the Bell Engineering Center at the University of Arkansas by USGS personnel. Samples for organics analyses from the Lee Creek, Dardanelle, Little Rock and Pine Bluff sites were delivered by USGS to American Interplex in Little Rock. Samples for organics analyses for the Van Buren site were delivered to the Bell Engineering Center and sent by United Parcel Service (next day air) to Daily Analytical Services …

Land Capability Study Of The Shires Of Mandurah And Murray, M R. Wells

Land resources series

No abstract provided.

Erosion Potential Of Phomopsis-Resistant Lupins, D J. Carter, Paul Findlater

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

During lupin harvesting, up to 20 per cent of the grain remains on the ground. This non-harvested or pilt grain is a valuable feed for sheep during early summer because the pods, leaf and stem generally provide little nutrient in the stubnbles. In addition, the more efficient the weed control, the less valuable are the stubbles.

The disease lupinosis caused by Phomopsis leptostromiformis restricts the amount of grazing from the lupin stubbles, and hence the risk of wind-erosion of stubble paddocks.

However, the introduction of lupin varieties moderately resistant to Phomopsis and with reduced potential to cause lupinosis means that …

Water Erosion Of Farmland In 1988, K J. Bligh

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

Widespread heavy rains in WesternAustralian agricultural areas in 1988 caused severe water erosion, much of which could have been avoided by minimum cultivation and lower stocking rates.

Maine Nonpoint Source Pollution Assessment Report, Bureau Of Water Quality Control

Maine Collection

Maine Nonpoint Source Pollution Assessment Report

Prepared by the Maine Department of Environmental Protection, Bureau of Water Quality Control, Augusta, Maine 1989.

Contents: Executive Summary / Introduction / Methodology / Statewide Water Quality Summary / State And Local Agency Programs for Control of Nonpoint Source Pollution / Process for Identification of Best Management Practices and Associated Standards / List of References / List of Figures / List of Tables

Feasibility Study Of Maine's Small Hydropower Potential, James D. Sysko

Maine Collection

Feasibility Study of Maine's Small Hydropower Potential

Prepared by James D. Sysko, Small Hydro East, for the Maine State Planning Office, Maine Office of Energy Resources, January 1989.

"This study focuses on finding potential hydropower sites of approximately 50 kw to 1000 kw in capacity."

Mineral Summaries Of Bureau Of Land Management Wilderness Study Areas In Utah, Intermountain Field Operations Center; U.S. Bureau Of Mines, Denver, Co, Central Mineral Resources; U.S. Geological Survey, Denver, Co

Elusive Documents

No abstract provided.

Proposed Rehabilitation And Betterment Program- Draft, United States Department Of The Interior

Elusive Documents

No abstract provided.

Wildlife Damage Management (Wdm) In The Southern Utah Adc District, United States Department Of Agriculture, Animal And Plant Health Inspection Service, Animal Damage Control

All U.S. Government Documents (Utah Regional Depository)

Across the United States, wildlife habitat has been substantially changed as human populations expand and land is used for human needs. These human uses and needs often compete with wildlife which increases the potential for conflicting human/wildlife interactions. In addition, segments of the public strive for protection for all wildlife; this protection can create localized conflicts between human and wildlife activities.

The Plight Of The ‘Forgotten’ Whales, Robert L. Brownell Jr., Katherine Ralls, William F. Perrin

United States Department of Commerce: Staff Publications

The “Save the Whales” movement, the most successful wildlife crusade in history, has greatly influenced government policies in a number of countries, including the United States. Thanks in large part to the movement’s dedicated members, the fight to save the great whales has been largely won. Yet all but ignored in this victory has been the plight of smaller cetaceans, which continues to worsen.

Estimates Of Macroinvertebrate Biomass In Lake Michigan, Thomas F. Nalepa

United States Department of Commerce: Staff Publications

To obtain updated, more accurate estimates of macroinvertebrate standing stocks in Lake Michigan, benthic biomass (ash-free dry weight) was determined at 40 stations in the southern end of the lake in 1980 and 1981. Biomass generally increased as sampling depth increased from 16 to 30 m, peaked at depths of 30-40 m, and then declined at depths greater than 40 m. Mean total biomass at the 16-30 m, 31-50 m, 51-90, and> 90 m depth intervals was 4.9, 7.8, 4.2, and 1.9 g m^-2, respectively. Oligochaetes (46%) and Pontoporeia hoyi (44%) accounted for most of the biomass at …

Pflanzenarten Der Mvr Als Quelle Biologisch Aktiver Verbindungen, L. M. Belenovskaja, L. P. Marakova, T. P. Nadežina, G. A. Kuznecova, V. S. Sinickij

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Es wurde der Gehalt an Flavonoiden und Kumarinen von 250 Pflanzenarten, die zu 38 Gattungen, 35 Familien der Flora der \ MVR gehören. untersucht. Bei 50 Arten der Familien Asteraceae, Fabaceae, Lamiaceae wurde ein beträchtlicher Gehalt an Flavoiden festgestellt. Kumarine sind für 60 Arten (17 Familien) nachgewiesen. Ausführlich wurde die Zusammensetzung der Flavonoidc für einzelne Arten der Familie Asteraceae und die der Kumarine für Arten der Familie .Apiaceae untersucht. Es wurden für die Gewinnung biologisch aktiver Flavonoide und Kumarine aussichtsreiche Pflanzenarten gefunden, die die Grundlage für die Herstellung originaler Arzneimittel von einem breiten Wirkungsspektrum bilden können.

Untersucht wurde auljerdem die …

Systematische Übersicht Der Gattung Artemisia L. In Der Mongolischen Volksrepublik. - Untergattung Dracunculus (Bess.) Peterm., T. G. Leonova

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Zu den Beifufjarten der MVR zählen 65 Arten, darunter 5 endemische und 7 subelldemische. ::>ie Arten gehören zu 3 Untergattungen: Artemisia (39 Arten), Dracullculus (BESS.) PETERM. (19 Arten) und Seriphidium (BESS.) PETERM. (7 Arten).

Es wird auf die Unterscheidungsmerkmale von 19 Arten der Untergattung Dracunculus eingegangen, die besonders grolje Schwierigkeiten bei der Bestimmung bereiten. Es wird angenommen, dalj die Stammformen der Untergattung Dracunculus, sowie der ganzen Gattung Artemisia, die ausdauernden krautartigen Wald-und Wiesenpflanzen mit geschlitzten Blättern aus der Sektion Campestres KOROBKOV sind, von denen sowohl einjährige Arten und Halbsträucher der Sektion Campestres, als auch ausdauernde krautige Pflanzen mit ungeteilten …

Effects Of Track Structure On Neutron Microdosimetry And Nanodosimetry, Randall S. Caswell

United States Department of Commerce: Staff Publications

The process by which neutrons transfer their energy to tissue is described, including the deposition of energy by secondary charged particle tracks in small sites; that is, microdosimetry and nanodosimetry. Three approximations are considered in order of increasing amounts of information on track structure: the continuous slowing-down approximation (CSDA), the straggling approximation, and the delta-ray approximation. Although simple approximations sometimes work quite well, much work remains to be done for very small sites, and for the inclusion of the effects of "passers" in the calculations.

The Probe, Issue 89 - January 1989

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
JANUARY 1989
APHIS Activity Report
High Tech Killing Traps
NADCA Logo
Personnel
Letters to Ye Ed
BioCenotics

13.2.5. Avian Cholera: A Major New Cause Of Waterfowl Mortality, Milton Friend

Waterfowl Management Handbook

Avian cholera is a highly infectious disease caused by the bacterium, Pasteurella multocida. Acute infections are common and can result in death 6 to 12 hours after exposure. Under these circumstances “explosive” die-offs involving more than 1,000 birds per day have occurred in wild waterfowl. More chronic infections with longer incubation times and less dramatic losses also occur. Transmission can occur by bird-to-bird contact, ingestion of contaminated food or water, and perhaps in aerosol form.

13.2.6. Lead Poisoning: The Invisible Disease, Milton Friend

Waterfowl Management Handbook

Lead poisoning is an intoxication resulting from absorption of hazardous levels of lead into body tissues. Lead pellets from shot shells, when ingested, are the most common source of lead poisoning in migratory birds. Other far less common sources include lead fishing sinkers, mine wastes, paint pigments, bullets, and other lead objects that are swallowed.

Issues In Public And Private Ownership Of Forested Lands In Northern New England And New York, Clark S. Binkley, Ed, Perry R. Hagenstein

Yale School of the Environment Bulletin Series

No abstract provided.

13.4.12. Control Of Phragmites Or Common Reed, Diana H. Cross, Karen L. Fleming

Waterfowl Management Handbook

Phragmites, or common reed, is a perennial grass often associated with wetlands. When phragmites is interspersed with open water or with other vegetation, waterbirds and small mammals find cover among the stems. Its dense root systems strengthen dikes and roads. On many sites, however, this robust emergent forms monotypic, impenetrable stands having little value for waterfowl. Ducks occasionally nest on the edges of large stands, but avoid the dense interior.

Phragmites is native to North America and is found worldwide, primarily in lowland temperate regions. Phragmites can occupy upland sites with seeps, or grow in brackish or fresh water several …