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  • 1
    Call number: AWI P1-85-0999 ; AWI P1-85-0999(2. Ex.)
    Type of Medium: Monograph available for loan
    Pages: 56 Seiten , Illustrationen
    Edition: first published
    ISBN: 0948277009
    Language: English
    Note: Contents: SUMMARY. - 1. INTRODUCTION. - 1.1 Geographic setting and ecosystems of the Antarctic. - 1.2 Man's activities in the Antarctic. - 2. ENVIRONMENTAL IMPACT ASSESSMENT. - 2.1 Environmental impact philosophy and terms. - 2.2 Definitions. - 2.3 Criteria for identifying significant impact. - 2.4 Temporal and spatial considerations of environmental impact. - 2.5 Consequential, synergistic and combined effects. - 2.6 Identification of sensitive indicators of change. - 3. ENVIRONMENTAL IMPACT ASSESSMENT PROCEDURE. - 3.1 Suggested format. - 3.2 When is an Environmental Impact Assessment necessary?. - 3.3 Environmental impact assessments of current operations and stations. - 3.4 Monitoring. - 4. SURVEY OF THE IMP ACTS OF MAN'S ACTIVITIES IN THE ANTARCTIC. - 4.1 Terrestrial impacts (including inland waters). - 4.2 Marine impacts. - 4.3 Atmospheric impacts. - 4.4 Distribution of impacts. - 5. THE FUTURE. - APPENDIX A. Relevant excerpts from Recommendation XII -3 (Man's Impact on the Antarctic Environment) of the Twelfth Antarctic Treaty Consultative Meeting, Canberra, 1983 and Paragraphs 17-19 of its Report. - APPENDIX B. ACRONYMS. - BIBLIOGRAPHY.
    Location: AWI Reading room
    Location: AWI Reading room
    Branch Library: AWI Library
    Branch Library: AWI Library
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  • 2
    ISSN: 1573-5052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Zehn Aufnahmen von jeder Standortsklasse (arm, mittel, gut) hinsichtlich des Wachstums von Populus grandidentata auf drei verschiedenen podsolierten Böden in West Cheboygan County, Michigan, 14 Meilen südlich der Mackinacstrasse werden vorgelegt. Eine phytosoziologische Tabelle erweist, dass die ausschliesslichen Differentialarten die Pflanzengesellschaften der armen Standorte von jenen der guten unterscheiden. Einige Arten der beiden Gruppen haben sich aus früheren Sukzessionsstufen erhalten, während einige andere als Eindringlinge aufzufassen sind. Der Mittelstandortsklasse fehlen die Differentialarten. Die Pflanzengesellschaften der armen Standortsklasse entwickeln sich zum Pinus resinosa-P. strobus-Wald und zum Quercus rubra-Wald, Gesellschaften der guten Standortsklasse zum Acer-Fagus-Wald einer mesophytischen Gesellschaft, die für den „nördlichen Laubwald” den Regionalklimax darstellt. Mediumstandortsbestände können sich entweder zu den Pinus-Gesellschaften oder aber zu der Acer-Fagus-Gesellschaft (meistens zu letzterer) entwickeln.
    Abstract: Résumé Dix relevés de 20 x 20 m. ont été faits dans chacune des trois catégories (pauvre, moyenne et bonne) de sites de rapportant à la croissance de Populus grandidentata sur trois soils podsolizés dans la partie occidentale du Comté de Cheboygan (Michigan), 14 miles au Sud du Détroit de Mackinac. Le tableau phytosociologique montre que les espèces différentielles exclusives distinguent nettement la végétation des sites pauvres de celle des bons sites. Dans les deux groupes, quelques espèces des étapes de l'évolution précédente se maintiennent tandis que d'autres s'installent, ébauchant une évolution ultérieure. La végétation des sites moyens ne possède pas d' espèces différentielles. La végétation des sites pauvres se développe vers la forêt de Pinus resinosa — P. strobus et la forêt de Quercus rubra-Pinus. La végétation des bons sites se développe vers la forêt d' Acer-Fagus, association caractéristique du climax regional („northern hardwoods”). La végétation des sites moyens se développe soit vers les associations de Pinus ou plus souvent vers l'association d' Acer-Fagus.
    Notes: Summary Ten 20×20 m plots were surveyed in each of three site classes (poor, medium, and good) for Populus grandidentata growth on three different podzolized soils in western Cheboygan County, Michigan, 14 miles south of the Straits of Mackinac. A phytosociological table shows that exclusive differential species distinguish communities of the poor sites from those of the good sites. In both groups some species are persistent from earlier stages of succession and others are invading species responsible for more recent succes sional change. The medium site class lacks differential species. Poor-site stands are developing toward Pinus resinosa-P. strobus forest and Quercus rubra-Pinus forest. Good-site stands are developing toward Acer-Fagus forest, a mesophytic community characteristic of the “northern hardwoods” regional climax. Medium-site stands have potentialities for development toward either the Pinus communities or the Acer-Fagus community, but predominantly in the direction of the latter.
    Type of Medium: Electronic Resource
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  • 3
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    In:  CASI
    Publication Date: 2006-10-26
    Description: Transport of pollen, spores, and other microscopic particulates of plant origin in atmosphere near earth surface
    Keywords: BIOSCIENCES
    Format: text
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