Download or read book Plant Communities on the Surficial Materials of North central District of Keewatin Northwest Territories written by S. A. Edlund and published by . This book was released on 1982 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reconnaissance study og the vegetation of north-central District of Keewatin was undertaken in order to gain a better understanding of the relationships between the nature and distribution of plant communities and the surficial materials on which they grow. The four types of surficial materials studied - bedrock, glacial deposits, marine deposits, and actively aggrading and eroding deposits - each support a suite of plant communities that naturally segregate on the basis of moisture regime.
Download or read book The Boreal Ecosystem written by James A. Larsen and published by Elsevier. This book was released on 2013-09-03 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Boreal Ecosystem presents an overview of the state of knowledge on the boreal forest region of North America, with extensive reference to the boreal regions of Europe and Asia. Initial sections of this book deal with aspects of the floristic composition and evolutionary history of the boreal vegetation. These introduce subsequent discussions on the processes at work in vegetation, soils, and the atmosphere—in short, with the boreal forest as an ecosystem, the sum total of the influences of many closely interlaced biotic and physical factors. These include not only plant species that make up the visible vegetation but also nutrients, soil, temperature, rainfall, progression of the seasons, soil microflora, arthropods, insects, and larger animals such as marten, otter, beaver, moose, caribou, bear, and wolf, and man. All are closely linked strands in the web of life, a web apart from, yet dependent on and influencing, the raw physical environment. This book should serve as an introduction and reference source to its audience: undergraduate and graduate students in the biological and ecological disciplines, research workers in these fields as well as in related areas such as soil science, agronomy, genetics, and climatology; in short, everyone with an interest in boreal ecology.
Download or read book Index to Publications written by Geological Survey of Canada and published by . This book was released on 1980 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canada s Vegetation written by Geoffrey A.J. Scott and published by McGill-Queen's Press - MQUP. This book was released on 1995-01-10 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Canada's Vegetation includes comprehensive sections on tundra, forest-tundra, boreal forest and mixed forest transition, prairie (steppe), Cordilleran environments in western North America, temperate deciduous forests, and wetlands. An overview of each ecosystem is provided, and equivalent vegetation types throughout the world are reviewed and compared with those in Canada. The integration of data on climate, soil, and vegetation in a single volume makes this an invaluable reference tool. Canada's Vegetation is sure to become a standard textbook for those in the environmental sciences.
Download or read book The Northern Forest Border in Canada and Alaska written by James A. Larsen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is enough to work on the assumption that all of the details matter in the end, in some unknown but vital way. Edward O. Wilson, Biophilia Advances in knowledge of northern ecology have been so rapid that to undertake a synthesis of all the literature now available would be a major enterprise, perhaps even a life's work, and so it must be considered permissible to fill in a few gaps, follow one's own inclinations, leaving comprehensive syntheses to those willing to undertake them. This is the rubric under which I have written, reporting some of the more interesting data I and others have obtained over the years, often diverging into discussions of plants, soils, climate, and faunal relationships which have perhaps not previously been dealt with extensively, or at least in quite the same way. This is purely intentional, since I find it difficult to summon up the needed enthusiasm, at this late hour, to write on topics which unfortunately for me have little attraction. I have thus written for the pleasure derived from depicting, perhaps at times as something of an impressionist, a fascinating biotic region, a captivating land, a collection of interesting ecological problems, environmental relationships to be discerned in part, perhaps understood to some small degree, perhaps one day to be modeled mathematically. As Leo Szilard once wrote: ': . . to be able to say even this much might be of some value" (Szilard, 1960).
Download or read book Canada s Changing North written by William C. Wonders and published by McGill-Queen's Press - MQUP. This book was released on 2003 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: When Canada's Changing North was first published in 1971, it quickly became a popular and reliable overview of the geography and culture of the Canadian North. In the three decades since it first appeared, great changes have occurred in this huge region that makes up two thirds of Canada's total area. This revised and expanded edition provides a new generation with a comprehensive and up-to-date introduction to the Canadian North and outlines how this region has become increasingly integrated into both the Canadian national fabric and the world.Among the many recent developments explored in Canada's Changing North is the legal recognition of aboriginal rights by the Canadian state, which has led directly to significant increases in their political and economic power. It also examines how economic development, which has long focused on non-renewable natural resources, particularly minerals, has grown to an enormous scale. Development of arctic oil and gas, which hinges on world supplies and national and international politics, has meant major changes across the North. Some of the new national parks in the Canadian North are already under threat from mineral development. Northern tourism has made it possible for a wide variety of affluent visitors to visit hitherto remote areas, affecting the ecology. The final selection, on northern challenges, discusses critical issues such as the impact of climatic change, the social needs (e.g. housing, education) of a rapidly increasing aboriginal population, environmental protection of unique regions, and defence of Arctic sovereignty. Of the sixty-two readings in this edition, forty-one are new.
Download or read book Permafrost and Climatic Change written by Eduard A. Koster and published by . This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Vegetation of the Ennadai Lake Area N W T written by James Arthur Larsen and published by . This book was released on 1968 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pre Mesozoic Ice Ages written by John C. Crowell and published by Geological Society of America. This book was released on 1999-01-01 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ancient ice ages are revealed by distinctive stratal facies that tell us much about the times of coolness and how the climate system works. Several strong ice ages were recorded in the late Paleozic time and during transitions from the Devonian in to the Carboniferous and from the Ordovician in to the Silurian. In Precambrian time, several are documented for both the late and early Proterozoic age. This title explores findings on the pre-Mesozoic ice ages, examining climate in relation to tectonobiogeochemical activities rooted in the changing earth-air-ocean system.
Download or read book Bibliography of North American Geology written by and published by . This book was released on 1967 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1990 with total page 1254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1965 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arctic and Alpine Environments written by Jack D. Ives and published by Routledge. This book was released on 2019-10-08 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1974, Arctic and Alpine Environments examines, the relatively simple ecosystems of arctic and alpine lands that still occupy extensive areas little disturbed by modern technology. The book argues that there is a necessity for carefully controlled development of the resources of these regions and suggests that there is a risk of irreversible disturbance without full understanding of these regions. This book provides a detailed documentation of cold-stressed arctic and alpine terrestrial environments and systematically deals with the present and past physical environment – climate, hydrology and glaciology; biota – treeline, vegetation, vertebrate zoology, and historical biogeography; abiotic processes – geomorphological and pedological and the role of man – bioclimatology, archaeology and technological impact, including radioecology. The book will appeal to academics and students of environmental and biological science, as well as providing a significant source for conservationists’, government agencies and industrial organizations.
Download or read book The Canadian Field naturalist written by and published by . This book was released on 1926 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Workshop on Permafrost Data Rescue and Access written by Roger Graham Barry and published by . This book was released on 1995 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canada s Missing Dimension Scientific research The earth Freshwater sea and ice The atmosphere The plants written by Charles Richard Harington and published by . This book was released on 1990 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
