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Die Gemeinsame Botanische Expedition Des Instituts Für Biochemie Der Pflanzen In Halle Und Des Instituts Für Volksmedizin In Ulan-Bator Durch Die Mongolische Volksrepublik 1983, Siegfried Huneck, Werner Hilbig

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

Einleitung

Im Rahmen des Abkommens über wissenschaftliche Zusammenarbeit der Akademie der Wissenschaften der DDR und des Ministeriums für Volksgesundheit der Mongolischen Volksrepublik (MVR) führten das Institut für Biochemie der Pflanzen (IBP) in Halle/Saale und das Institut für Volksmedizin (IVM) in Ulan-Bator vom 15. Juni bis 17. August 1983 die zweite gemeinsame Expedition in die MVR durch. An dieser Expedition nahmen teil: Dr. habil. S. HUNECK (IBP, Leiter der Expedition), Dr. W. HILBIG (Mattin-Luther-Universität Halle, Wissenschaftsbereich Geobotanik und Botanischer Garten, Halle/Saale), Dr. T. KHAIDA V (Direktor des IVM) und Dr. U. COGT (Institut für Botanik der Akademie der Wissenschaften in Ulan-Bator). …

Nachruf Für E. M. Lavrenko, Z. V. Karamyševa, Werner Hilbig

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

Am 18. Juli 1987 verstarb in Leningrad im Alter von 87 Jahren Prof. Dr. Evgenij Michajlovic LAVRENKO.

Die biologische Forschung in der Mongolei verliert damit ihren Senior und einen ihrer herausragenden Vertreter, der seit den 40er Jahren mit der Mongoleiforschung verbunden ist und ihr wesentliche Impulse verliehen hat.

Verlauf Und Wissenschaftliche Ergebnisse Der Expedition In Die Mongolische Volksrepublik 1978, Siegfried Huneck, Hans Dieter Knapp

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

Einleitung

Auf Grund eines Abkommens über wissenschaftliche Zusammenarbeit der Akademie der Wissenschaftel'l der Mongolischen Volksrepublik und der Akademie der Wissenschaften der Deutschen Demokratischen Republik führten das Institut für Naturstoffe (IN) in Ulan-Bator und das Institut für Biochemie der Pflanzen (IBP) in Halle/Saale vom 13. Juni bis 29. Juli 1978 eine gemeinsame Expedition in die MVR durch. An dieser Expedition nahmen von Seiten der AdW der DDR Dr. habil. S. HUNECK (Leiter der Expedition), Dr. habil. H. RIPPERGER (beide IBP) und Dr. H. D. KNAPP (damals Müritz-Museum, Waren) und von Seiten der AdW Dr. BASANSUREN (IN) und zeitweilig Dr. U. COGT …

Mikroklima-Untersuchungen In Pflanzengesellschaften Verschiedener Höhenstufen In Hochgebirgen Der Nordwest- Und Südmongolei, Werner Hilbig, K. Helmecke, Z. Schamsran, D. Bumzaa

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

Im Rahmen der Mongolisch-Deutschen Biologischen Expeditionen wurden erste Mikroklimauntersuchungen im Jahre 1973 in ausgewählten Pflanzengesellschaften der Wüste und Halbwüste im $üdgobi-Aimak durchgeführt (HELMECKE u. SCHAMSRAN 1979). Auch von sowjetisfber (BERESNEVA 1974, 1981) und von polnischer Seite (vgl. KLIMEK 1980) liegen mikroklimatologische Untersuchungen für verschiedene Gebiete der MVR vor. Von den Gebirgen der MVR wurde besonders der Südteil des Changai berücksichtigt. Hier wurden Mikroklimamessungen in verschiedenen Höhenstufen durchgeführtl (BRZEZNIAK u. NIEDZWIEDZ 1980). Die von Biologen der Universitäten Halle-Wittenberg und Ulan-Bator von 1977 bis 1979 durchgeführten Untersuchungen in Hochebirgen der MVR (Charchiraa, Uvs Aimak; Ich-Bogd, Bajanchongor Aimak) schlosseh neben den floristisch-vegetationskundlichen und …

Title Page, Verso Of The Title Page, And Table Of Contents For Erforschung Biologischer Ressourcen Der Mongolischen Volksrepublik, Band 7 (1988), Michael Stubbe

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

Title page, verso of the title page, and table of contents for Erforschung biologischer Ressourcen der Mongolischen Volksrepublik, Band 7 (1988)

Bibliographie Pflanzen Soziologischer Arbeiten Über Die Mongolische Volksrepublik. Folge 2, Werner Hilbig

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

Zusammenfassung

Der vorliegende Teil 2 einer Bibliographie pflanzensoziologischer und vegetationsökologischer Arbeiten über das Gebiet der Mongolischen Volksrepublik (MVR) enthält im wesentlichen Arbeiten aus den Jahren 1980-1985. Es werden 201 Arbeiten zitiert.

Summary

The second part of the bibliography of geobotanical and synecological publications about the territory of the Mongolian People's Republic contains publications mainly from 1980 till 1985. 201 papers are quoted.

The Probe, Issue 79 - January 1988

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
JANUARY 1988
Animal Traps – Kinder Than Nature
The Pesticide Pipeline
APHIS Activity Report
Letters to Ye Ed
The Fur Industry

13.2.1. Waterfowl Use Of Wetland Complexes, Leigh H. Fredrickson, Frederic A. Reid

Waterfowl Management Handbook

Waterfowl are a diverse group of birds that have widely divergent requirements for survival and recruitment. Whistling-ducks, geese, and swans (Anserinae) and ducks (Anatinae) have contrasting life history requirements.

Several goose populations have expanded greatly despite extensive continental wetland losses and degradation. Most expanding populations nest in arctic areas where modifications or disturbance of nesting habitats have been minimal. These grazers often find suitable migratory and wintering habitats in terrestrial or agricultural environments. In contrast, ducks are less terrestrial and populations are influenced more by wetland characteristics, such as quality, total area of wetland basins, and size and configuration of …

13.3.1. Invertebrate Response To Wetland Management, Leigh H. Fredrickson

Waterfowl Management Handbook

By gaining greater understanding and appreciation of wetland environments, managers have developed creative insights for waterfowl conservation. Among the most exciting new developments in the understanding of functional wetlands has been the recognition of the important roles of invertebrates in aquatic ecosystems. These roles include trophic linkage from primary production to secondary consumers such as waterfowl, packaging of specific nutritional components such as amino acids and micronutrients for vertebrate predators, and detrital processing of wetland organic material. Although specific invertebrate responses to various management techniques are not always predictable and may differ among invertebrate species, patterns related to water regimes, …

13.4.9. Preliminary Considerations For Manipulating Vegetation, Leigh H. Fredrickson, Frederic A. Reid

Waterfowl Management Handbook

A wide diversity of plants has adapted to the dynamic nature of wetlands. The continually changing floral landscape is shaped by physical or abiotic components that include climate, fire, soil, and water. Water quantity, quality, and chemistry have a dominating influence on wetlands as do factors such as hydroperiod (period when soils are saturated) and hydrological regime. Other factors that may affect the abundance, structure, and species composition of macrophytes or robust emergents are natural grazing, disease, and interspecific plant competition.

Vegetation is important to waterfowl for producing seeds, tubers, and browse; providing nest sites; and serving as substrates for …

13.1.1. Nutritional Values Of Waterfowl Foods, Leigh H. Fredrickson, Frederic A. Reid

Waterfowl Management Handbook

Over 40 species of North American waterfowl use wetland habitats throughout their annual cycles. Survival, reproduction, and growth are dependent on the availability of foods that meet nutritional requirements for recurring biological events. These requirements occur among a wide variety of environmental conditions that also influence nutritional demands. Recent work on nesting waterfowl has identified the female’s general nutrient needs for egg laying and incubation. Far less is known about nutritional requirements for molt and other portions of the life cycle, particularly those during the non-breeding season. Although information on specific requirements for amino acids and micronutrients of wild birds …

Complete Waterfowl Management Handbook

Waterfowl Management Handbook

The North American Waterfowl Management Plan, the Service's most recent mandate for management of migratory waterfowl, and recent legislation such as the Farm Bill all underscore the need for a single source of information about the management of waterfowl and their habitat. Much of this information exists in scientific papers, unpublished reports, or has never been recorded, and thus is not readily accessible by waterfowl managers. The need for a waterfowl management handbook was originally suggested to the Office of Information Transfer by personnel in the Service's north-central region. A prototype handbook was developed in 1987 and critiqued by 38 …

Impact Of Biotechnology On Agriculture Productivity, Roger A. Kleese

Journal of the Iowa Academy of Science: JIAS

Biotechnology is a diverse array of technologies which today are in various stages of evolution and development. To understand them and the potential application of these technologies to agriculture, it is helpful to consider them in a historical perspective. In addition, it is important to understand the interdependence of biotechnologies on traditional, well developed technologies. The commercial development of biotechnology is more difficult than imagined even as recently as five years ago. Also, the problems being addressed generally demand a much better understanding of the physiology and biochemistry of the plant and animal systems under study. Nonetheless, there is a …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Evaluation Of Fish Eradication And Game-Fish Restocking In A Central Iowa Pond, Dennis L. Scarnecchia

Journal of the Iowa Academy of Science: JIAS

Changes in fish community and population structure associated with fish eradication and subsequent restocking were investigated in a small (0. 25 ha) impoundment in Boone County, Iowa. In September 1985, when fish were eradicated with rotenone, the fish community consisted of eight species. Large numbers of small bluegills (Lepomis macrochirus), green sunfish (Lepomis ryanellus), and stunted crappies (Pomoxis spp.) dominated the pond numerically, but seven large carp (Cyprinus carpio) and 18 large bigmouth buffalo (lctiobus ryprinellus) constituted 80% of the total biomass. The only quality angling (popular species of desirable size) was for a few largemouth bass (Micropterus salmoides) and …

Using Life History And Ecology As Tools To Manage A Threatened Salamander Species, Scott R. Mcwilliams, Marilyn D. Bachmann

Journal of the Iowa Academy of Science: JIAS

Selected aspects of the life history and ecology of the small-mouthed salamander (Ambystoma texanum Matthes) relevant to the management of this threatened species in Iowa are presented. The population studied utilizes flooded woodland habitat during courtship, breeding and egg laying, and during the entire larval period. Larval foraging strategies in this habitat included ontogenetic but no diel shifts in prey selection. Synchronous, nocturnal breeding migration allowed effective use of drift fences fur capture of adults used in captive breeding, courtship behavior studies, and the estimation of breeding population size. Large numbers of spennatophores, apparently indiscriminate mate choice, and the relatively …

Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

An Interpretative History Of The Proceedings Of The Iowa Academy Of Science, Don C. Norton

Journal of the Iowa Academy of Science: JIAS

The Proceedings of the Iowa Academy of Science was first published in 1887 and has continued yearly except for 1905. Business reports and contributed papers constituted most of the volumes. Publication of symposia has become more popular in recent years. Financial and mechanical problems have caused strains at rimes, but these have largely been solved after publication became independent of the State Printer.

Program Abstracts, 100th Session, Iowa Academy Of Science, April 21-23, 1988, Iowa State University

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Economic Changes From The Use Of Biotechnology In Production Agriculture, Loren W. Tauer

Journal of the Iowa Academy of Science: JIAS

The potential economic impact of biotechnology in production agriculture is discussed. There are challenges and difficulties in completing economic research when little production information is available on biotechnologies. I argue that little impact differences exist between cost-reducing versus output-increasing technological change. Rapid technological change results in low average returns in agriculture but continuous early innovators earn higher returns. Various plant and animal technologies are presented and discussed.

Benthic Macroinvertebrate Habitat Associations Of The Channelized Middle Missouri River, James B. Barnum, Roger W. Bachmann

Journal of the Iowa Academy of Science: JIAS

Benthic macroinvertebrates associated with navigation structures (dikes, dike pools, revetted banks) and abandoned channels on the Missouri River at the Iowa-Nebraska border were sampled in June, August, and October 1983 to determine the invertebrate community structure of these habitats. Invertebrate densities were greatest in the abandoned channel habitat (to over 13,000/m²), while diversities were greatest in the dike and revetment habitats. Greater habitat diversity contributed to greater organism diversity in the dike and revetment habitats while sediment homogeneity and stability presumably contributed to greater organism densities in the abandoned channel habitat. Dike pools had turbulent eddy currents, which …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Growth, Survival, And Vulnerability To Predation Of Stocked Walleye (Stizostedion Vitreum) Fingerlings, James D. Wolters

Electronic Theses and Dissertations

In laboratory tanks, largemouth bass (Micropterus salmoides) and northern pike (Esox Lucius consumed fathead minnows (Pimephales promelas) 2.6 times more frequently than walleye (Stizostedion vitreum) and 5.7 times more than lepomids. Prey were more vulnerable in circular than rectangular tanks. In field studies, walleye fingerlings averaging 35 mm and 53 mm (mean total length) were stocked in two ponds (3- and 7- hectares) respectively: both contained largemouth bass, northern pike, yellow perch (Perca flavescenes), green sunfish (Lepomis cyanellus), and fathead minnows. Aquatic insects dominated the diet of largemouth bass for 3 days after walleye were stocked, indicating that walleye fingerlings …

A Mass Mortality Of Fishes In Lake Titicaca (Peru-Bolivia) Associated With The Protozoan Parasite Ichthyophthirius Multifiliis, Wayne A. Wurtsbaugh, R. Alfaro

Watershed Sciences Faculty Publications

In December 1981 , an epizootic of the protozoan parasite Ichthyophthirius multifiliis killed an estimated 18 million killifish Orestias spp. in Lake Titicaca, a high-altitude tropical system. Of the dead fish collected, 93% were adult O. agassii, a commercially important species that is abundant in the littoral zone. Juvenile Orestias spp., pelagic species, and some other littoral zone fis hes were slightly affected. lchthyophthirius multifiliis was probably introduced with exotic fishes brought to Lake Titicaca in the 1940s and 1950s.

Production Of Triploid Rainbow Trout For Evaluation In South Dakota Waters, Jeff C. Dillon

Electronic Theses and Dissertations

In September 1986, approximately 50,000 rainbow trout (Salmo gairdneri) eggs were fertilized and subjected to heat shocks to prevent expulsion of the second polar body, theoretically resulting in triploid embryos. Heat shocks were at 26 and 28°c, began 10, 20, 30, or 40 min after fertilization, and lasted for 10 or 20 min for a total of 16 treatments. Another 25,000 eggs served as controls and were handled identically but at a normal water temperature of 12°c. Cumulative hatching rates for eggs that were heat-shocked at 26 and 28° were 64 and 50%, respectively, compared to control eggs which had …

Winter 1988, Nsu Oceanographic Center

Currents

No abstract provided.

Summer 1988, Nsu Oceanographic Center

Currents

No abstract provided.

Spring 1988, Nsu Oceanographic Center

Currents

No abstract provided.