Physical Sciences and Mathematics Commons^™

Ergebnisse Der Bestandserfassung Der Kropfantilope (Procapra Gutturosa Pallas, 777) Auf Dem Territorium Des Suche-Bator- Und Ost-Aimaks Der Mvr Im Juli/August 1981, Ch. Suchbat, Sumiya Ganzorig, N. Dawaa, Ž. Borgil

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

Der Hauptbestand der Dzeren-Antilope (auch Mongolische Gazelle) ist gegenwärtig im Suche-Bator- und im Ost-Aimak der MVR zu finden. Mit dem Ziel. den Gesa,mtbestand an Individuen zu ermitteln, wurden in den oben genannten Aimaks Erhebungen durchgeführt. Es wurden 34 Untersuchungsgebiete (23 im Suche-Bator Aimak, 11 im Ost-Aimak) mit einer Gesamtfläche von 3723 km² ausgewählt. Die Berechnungen erfolgten nach genauer Zählung der an bestimmten Marschrouten angetroffenen Tiere.

Bei den Untersuchungen wurden 5 133 Dzeren-Antilopen ermittelt, was einer mittleren Bestandsdichte von 13,8 Individuen je 1000 ha entspr icht. Die Dichtehäufigkeit der Antilopen schwankt innerhalb weiter Grenzen, so dalj man innerhalb weniger Tage …

Neue Literatur (Page 50), Martin-Luther-Universität

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

Neue literatur listed on page 50 of Erforschung biologischer Ressourcen der Mongolischen Volsrepublik, Band 6 (1985/1986).

Das Institut für Evolutive Morphologie und Ökologie der Tiere "A. N. Severcov" in Moskau gab 1986 folgenden Sammelband "Herpetologische Untersuchungen in der Mongolischen Volksrepublik" heraus.

Weitere Beiträge Zur Ernährung Des Uhus Bubo Bubo (L., 1758) In Der Westmongolei, Michael Stubbe, Hermann Ansorge, R. Piechocki, U. Lange, Ravčigijn Samjaa, D. Bartuu

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

Von 4 Fundorten aus der Westmongolei, darunter erstmals aus dem Mongolischen Altai und dem diungarischen Bereich, wurden aus Uhu-Gewöllen in den Jahren 1980 bzw. 1982 1432 Vertebraten analysiert: 1335 Säugetiere (93,20 %) und 97 Vögel (6,20 %). Die Anzahl der Säugetierarten betrug 34, die der nachgewiesenen Vogelarten mindestens 38. Den wichtigsten qualitativen Be uteanteil decken die Vertreter der Arvicoliden (27,03 %) ab. In abgestufter Reihenfolge schlieJjen die Familien Dipodidae (23,74 %), Ochotonidae (20,74 %), Cricetidae (17,74 %), Leporidae (2,09 %) und Anatidae (1,60 %) an. Quantitativ wurden von den Uhus 216,6 kg konsumiert. 85,50 % der Biomasse entfielen auf Säuger, …

Zum Gedenken An I. S. Grebenščikov (1912-1986), Michael Stubbe

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

Obituary of scientist Zum Gedenken an Igor Sergeevič Grebenščikov, born February 3, 1912, in Petersburg, died March 3, 1986.

Die Nutzung Der Ressourcen Des Rohmilchaufkommens In Der Mvr, Gontschigijn Gombo

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

Die MVR verfügt als Agrar-Industrieland mit seiner traditionellen Viehzucht überhinreichende Milchressourcen. die dringend rationell verarbeitet werden müssen, In der Mongolei wird neben der Kuhmilch die Milch vom Pferd, der Ziege, des Schafes und Kameles für dietägliche Ernährung genutzt. Der industrielle Verarbeitunggrad der vorhandenen Ressourcen des Rohmilchaufkommens entspricht nicht der gegenwärtigen Forderung. Im Rahmen der betrachteten Problemkreise werden die Analyse der vorhandenen Milchressourcen und des heutigen Standes der Entwicklung der Milchindustrie in der MVR angegeben und auch einige Erwägungen zur optimalen Auswahl einer vollwertigen Variante der Milchverarbeitungstechnologie mit dem Ziel der vollen Befriedigung des Bedarfs der Bevölkerung an Milch und Milchprodukten …

Prescribed Burning Guidelines In The Northern Great Plains, Kenneth F. Higgins, James L. Piehl, Arnold D. Kruse

SDSU Extension Circulars

The use of fire to manage grasslands for wildlife is a relatively new management option for resource managers in the Northern Great Plains (NGP). Nearly all of the burning during the past 20-25 years has been conducted without the aid of specific guidelines for the region. This state-of-the-art set of recommendations was compiled because of this void. Records of 902 grassland fires (primarily on U.S. Fish and Wildlife lands), personal experiences, and synopses of other published fire research were used in developing the guidelines in this manual. Fifty-two percent of the 902 fires were in native prairie grasslands with lesser …

Annotated Bibliography Of Fire Literature, Kenneth F. Higgins, David P. Fellows, J. Mike Callow, Arnold D. Kruse, James L. Piehl

SDSU Extension Circulars

Natural resource managers have greatly increased the use of fire to manage grassland habitats during the past two decades in the northern Great Plains region of the United States and Canada. In support of these efforts, we have compiled this annotated bibliography to provide a condensed reference of fire literature for those managers with an interest in fire ecology. References are arranged alphabetically by author and year, numbered consecutively, and referenced by number in the author and subject indexes that follow the bibliography. The intent in compiling the bibliography and indexes is more to identify subject matter and to direct …

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.

Polar Narcosis In Aquatic Organisms, Steven P. Bradbury, Richard W. Carlson, Tala R. Henry

Steven P. Bradbury

The majority of industrial organic chemicals lack identifiable structural characteristics that result in specific biological activity. These nonpolar-nonelectrolytes are acutely toxic to aquatic organisms via a nonspecific mode of action termed narcosis. The toxicity of industrial chemicals eliciting nonpolar narcosis can be reliably predicted by log P (baseline toxicity models). Using single chemical and joint toxic action models, several research groups have reported classes of polar compounds (for example, esters, phenols, and anilines) that elicit a narcosis-like syndrome; however, they are more acutely toxic than what is predicted using baseline toxicity models. An assessment of rainbow trout (Salmo gairdneri) in …

Comparative Toxicology Of The Pyrethroid Insecticides, Steven P. Bradbury, Joel R. Coats

Steven P. Bradbury

The toxic effects elicited by synthetic pyrethroids in animals are varied in degree and nature. Their relative safety to birds and mammals contrasts sharply with their acute effects on fish and arthropods. Explantation of their differences in toxicity depends on examination of all factors of their comparative toxicology. Routes of exposure are important, as are metabolism and elimination rates, especially for mammals and birds with their considerable capabilities for biotransformation. Significant differences in sensitivity at the sites of toxic action may also play a role in differential responses to these insecticides. Finally, physical properties that influence the environmental disposition and …

Effectiveness Of Drift Fences And Tunnels For Moving Spotted Salamanders Ambystoma Maculatum Under Roads, Scott D. Jackson, T. F. Tyning

Scott D. Jackson

No abstract provided.

Bent Pegs And Round Holes: New Concerns For Oil And Gas Commissions, Kemp Wilson, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

12 p. ; ill ; 28 cm

Human Impacts To Minnesota Wetlands, Carol A. Johnston

Journal of the Minnesota Academy of Science

ABSTRACT-Minnesota's 3.6 million ha of wetlands have been impacted by a variety of human activities, including agricultural drainage, urbanization, water control, and nonpoint source pollution. More than half of Minnesota's wetlands have been destroyed since the first European settlers arrived, an average loss of about 35,600 ha/yr. Drainage for agriculture is the major cause of wetland loss in Minnesota, particularly in southern Minnesota and the Red River Valley. In addition to impacting wetlands directly, wetland drainage affects downstream areas by increasing flood flows, and releasing sediment and nutrients. Urban development and highway construction affect a smaller proportion of Minnesota's wetlands, …

The Metropolitan Wastewater Treatment Plant And The Mississippi River: 50 Years Of Improving Water Quality, D. Kent Johnson, Paul W. Aasen

Journal of the Minnesota Academy of Science

ABSTRACT-The Metropolitan Waste Control Commission and its predecessors have operated the Metropolitan Wastewater Treatment Plant on the Mississippi River at St. Paul, MN, for the past 50 years. Analysis of water quality data collected over the past 60 years shows a general improvement of water quality as the waste treatment process has been upgraded. In 1926, dissolved oxygen ranged from <1 mg/L to 2 mg/L in the river reach from St. Paul to Lock and Dam 3 (August mean values). In 1987, dissolved oxygen values in the same area were 7 mg/L or greater. The drought of 1988 produced severe low flow conditions in the Mississippi River, but dissolved oxygen values continued to meet or exceed the 5 mg/L water quality standard. Biological sampling in 1926 and 1959 showed an absence of clean water organisms. Biological sampling in 1985 showed an abundance of clean water organisms. The most dramatic evidence of this resurgence is the reappearance of the Hexagenia mayfly in St. Paul after a 50 year absence. The water quality improvements in the Mississippi River correlate directly with improved treatment plant processes, particularly the current advanced secondary treatment facility, and with improved waste control throughout the Minneapolis/St. Paul area.

The Planet, 1989, Winter, Volume 10, Issue 02, Aaron Coffin, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

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 …

Differentiation Of Mule Deer And White-Tailed Deer, David W. Oates

Nebraska Game and Parks Commission: Publications

The mule deer was so named because of the appearance of its ears. Compared to the whitetail's, the mule deer's ears are noticeably oversized, measuring fully one-fourth larger.

The whitetail is also well named, for its most distinctive feature is the large tail or "flag." The upper surface of the underside is pure white and is often exposed when the deer is fleeing. Instead of a "white flag," the mule deer's tail can be more likened to a black-tipped rope.

Antlers, too, serve to differentiate the species. In the whitetail, the points on each antler arise from a single main …

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 …

Incidence Of Lead Shot In The Rainwater Basins Of South Central Nebraska, David W. Oates

Nebraska Game and Parks Commission: Staff Research Publications

Substrate samples were taken from eight marshes in southern Nebraska during the summers of 1985 and 1986 when the marshes were relatively dry. Each sample was 12 inches square by 2 inches deep. The number of samples per marsh ranged from 66 to 112, with transect lengths ranging from 71 to 201 m. Based on a 97.5% recovery rate, these marshes contained an average of 47,217 lead and 5849 steel shot per hectare. Ranges were from 20,690 to 90,286 pellets per hectare for lead and 0 to 14,044 pellets per hectare for steel.

The Uranium-Trend Dating Method: Principles And Application For Southern California Marine Terrace Deposits, Daniel R. Muhs, John N. Rosholt, Charles L. Bush

United States Geological Survey: Staff Publications

Uranium-trend dating is an open-system method for age estimation of Quaternary sediments, using disequilibrium in the ²³⁸U–²³⁴U–²³⁰Th decay series. The technique has been applied to alluvium, colluvium, loess, till, and marine sediments, in this study we tested the U-trend dating method on calcareous marine terrace deposits from the Palos Verdes Hills and San Nicolas Island, California. Independent age estimates indicate that terraces in these areas range from –80 ka to greater than 1.0 Ma. Two low terraces on San Nicolas Island yielded U-trend plots that have a clustered array of points and the ages of …

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.

Differentiation Of Mule Deer And White-Tailed Deer, David Oates

Other Publications in Wildlife Management

The mule deer was so named because of the appearance of its ears. Compared to the whitetail's, the mule deer's ears are noticeably oversized, measuring fully one-fourth larger. The whitetail is also well named, for its most distinctive feature is the large tail or "flag." The upper surface of the underside is pure white and is often exposed when the deer is fleeing. Instead of a "white flag," the mule deer's tail can be more likened to a black-tipped rope. Antlers, too, serve to differentiate the species. In the whitetail, the points on each antler arise from a single main …

Breeding Field Peas : Screening Pea Lines, G H. Walton

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

The early use of field peas in Western Australia was as a green manure crop or to feed stock be grazing the mature crop. Varieties which produced a large bulk of green material were sown. There was no control over insects or diseases.

In 1985, the Feseral Government recognised that to realize the potential of grain legumes grown throughout Australia, more research was needed.

One of the Grain Legume Research Council's (GLRC) priorities is species evaluation and variety improvement.

Since 1983, the Western Australian Department of Agriculture has screened advanced crossbred lines from the South Australian breeding programme for its …

Farming Systems Research/Extension And The Concepts Of Sustainability, Charles A. Francis, Peter E. Hildebrand

Department of Agronomy and Horticulture: Faculty Publications

Farming Systems Research and Extension (FSR/E) has strongly influenced the direction of agricultural development over the past two decades. Involving farmers, change agents and researchers, this participatory approach to technological improvement has evolved as an efficient means to develop individual components and more integrated systems that are uniquely suited to specific biophysical and socioeconomic conditions. Farmers with similar conditions and for whom specific recommendations are appropriate are grouped, in FSR/E, into identifiable Recommendation Domains. The technologies recommended conform with the biophysical and socioeconomic constraints that create environments within the domains, based on the philosophy that new technologies must conform with …

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

Rottnest Island : A Reference List, Jennifer Browne

Research outputs pre 2011

No abstract provided.

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.

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.