Author: Alf Erling Porsild
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 226

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Book Description

Author: A E (Alf Erling) 1901- Porsild
Publisher: Hassell Street Press
ISBN: 9781013835230
Category :
Languages : en
Pages : 246

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Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author: Stephen S. Talbot
Publisher:
ISBN:
Category : Gap analysis (Conservation biology)
Languages : en
Pages : 86

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Book Description

Author: Christian Bay
Publisher: Museum Tusculanum Press
ISBN: 9788763512176
Category : Science
Languages : en
Pages : 108

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Book Description
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Author: Alf Erling Porsild
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 232

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Book Description
The present work is intended as a guide or manual to the 340 species and major geographical races of flowering plants and ferns that comprise the vascular flora as it is known at present of the Canadian Arctic Archipelago. Besides conventional keys to families, genera, and species, it contains brief descriptions, line drawings, and maps showing the North American ranges of all species. For each species brief notes are given on local occurrence, soil preferences, economic uses, if any, and on their total or world distribution. A glossary explains the meaning of all special botanical terms used throughout the text ; at the end an index is provided to species, illustrations, and maps.

Author: David G. Frodin
Publisher: Cambridge University Press
ISBN: 9781139428651
Category : Science
Languages : en
Pages : 1136

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Book Description
This 2001 book provides a selective annotated bibliography of the principal floras and related works of inventory for vascular plants. The second edition was completely updated and expanded to take into account the substantial literature of the late twentieth century, and features a more fully developed review of the history of floristic documentation. The works covered are principally specialist publications such as floras, checklists, distribution atlases, systematic iconographies and enumerations or catalogues, although a relatively few more popularly oriented books are also included. The Guide is organised in ten geographical divisions, with these successively divided into regions and units, each of which is prefaced with a historical review of floristic studies. In addition to the bibliography, the book includes general chapters on botanical bibliography, the history of floras, and general principles and current trends, plus an appendix on bibliographic searching, a lexicon of serial abbreviations, and author and geographical indexes.

Author: Olav Slaymaker
Publisher: Springer
ISBN: 3319445952
Category : Science
Languages : en
Pages : 439

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Book Description
This is the only book to focus on the geomorphological landscapes of Canada West. It outlines the little-appreciated diversity of Canada’s landscapes, and the nature of the geomorphological landscape, which deserves wider publicity. Three of the most important geomorphological facts related to Canada are that 90% of its total area emerged from ice-sheet cover relatively recently, from a geological perspective; permafrost underlies 50% of its landmass and the country enjoys the benefits of having three oceans as its borders: the Arctic, Pacific and Atlantic oceans. Canada West is a land of extreme contrasts — from the rugged Cordillera to the wide open spaces of the Prairies; from the humid west-coast forests to the semi-desert in the interior of British Columbia and from the vast Mackenzie river system of the to small, steep, cascading streams on Vancouver Island. The thickest Canadian permafrost is found in the Yukon and extensive areas of the Cordillera are underlain by sporadic permafrost side-by-side with the never-glaciated plateaus of the Yukon. One of the curiosities of Canada West is the presence of volcanic landforms, extruded through the ice cover of the late Pleistocene and Holocene epochs, which have also left a strong imprint on the landscape. The Mackenzie and Fraser deltas provide the contrast of large river deltas, debouching respectively into the Arctic and Pacific oceans.

Author: Lloyd Anthony Spetzman
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 60

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Book Description

Author: Flora of North America Editorial Committee
Publisher:
ISBN: 0195310713
Category : Science
Languages : en
Pages : 941

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Book Description
FNA presents for the first time, in one published reference source, information on the names, taxonomic relationships, continent-wide distributions, and morphological characteristics of all plants native and naturalized found in North America north of Mexico.

Author: William C. Wonders
Publisher: McGill-Queen's Press - MQUP
ISBN: 9780773526402
Category : Business & Economics
Languages : en
Pages : 476

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Book Description
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.