The Avifauna of Central Northeast Greeland, 73 15 N-74 05 N, Based on a Visit to Myggbukta, May-July 1979 PDF Download
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Author:
Publisher: Museum Tusculanum Press
ISBN: 9788763511797
Category :
Languages : en
Pages : 48
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Author:
Publisher: Museum Tusculanum Press
ISBN: 9788763511797
Category :
Languages : en
Pages : 48
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Book Description
Author: Magnus Elander
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 44
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Author:
Publisher: Museum Tusculanum Press
ISBN: 9788763512251
Category :
Languages : en
Pages : 68
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Author:
Publisher: Museum Tusculanum Press
ISBN: 9788763511926
Category :
Languages : en
Pages : 20
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Book Description
Author: Richard Vaughan
Publisher: A&C Black
ISBN: 1408136899
Category : Nature
Languages : en
Pages : 450
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Book Description
Arctic birds have long held a fascination for Richard Vaughan, whose trips to the region, watching and photographing birds, have provided the raw material for a number of previous publications. Here, he focuses on the historical aspects of Arctic ornithology, bringing to life not only the birds but the activities of those who have lived with them, or explored in search of them. A general introduction to the Arctic and the forces that shape its bird populations and their biology is followed by sections on native peoples, whaling and discovery ships, and the famous ornithologists who have investigated these often inhospitable habitats. Conservation, both of individual species and of habitats, is discussed against the background of threats to the Arctic environment. Since half the Arctic lies in Russia, detailed consideration is naturally given to Arctic bird studies in that country, as well as in North America and Greenland. Purely ornithological interludes look in detail at the Gyrfalcon, Knots, Ross's Gull, geese, divers, Snowy Owls and many more. The book includes practical advice on how to visit the Arctic and where and when to go. Richard Vaughan's own photographs and the drawings of Swedish artist Gunnar Brusewitz do real justice to the beauty of both the environment and its birds.
Author: Eberhard Gwinner
Publisher: Springer Science & Business Media
ISBN: 3642745423
Category : Science
Languages : en
Pages : 436
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E. GWINNER! The phenomenon of bird migration with its large scale dimensions has attracted the attention of naturalists for centuries. Worldwide billions of birds leave their breeding grounds every autumn to migrate to areas with seasonally more favor able conditions. Many of these migrants travel only over a few hundred kilo meters but others cover distances equivalent to the circumference of the earth. Among these long-distance migrants are several billion birds that invade Africa every autumn from their West and Central Palaearctic breeding areas. In the Americas and in Asia the scope of bird migration is of a similar magnitude. Just as impressive as the numbers of birds are their achievements. They have to cope with the enormous energetic costs of long-distance flying. particularly while crossing oceans and deserts that do not allow replenishment of depleted fat reserves. They have to appropriately time the onset and end of migrations. both on a daily and annual basis. And finally. they have to orient their migratory movements in space to reach their species- or population-specific wintering and breeding grounds, irrespective of the variable climatic conditions along their migratory routes.
Author: Gert S. Mogensen
Publisher: Museum Tusculanum Press
ISBN: 9788763511780
Category : Mosses
Languages : en
Pages : 68
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Author: Magnus Elander
Publisher:
ISBN: 9788717054042
Category : Birds
Languages : en
Pages : 44
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Book Description
Author: Denmark. Kommissionen for videnskabelige undersøgelser i Grønland
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 348
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Author:
Publisher:
ISBN: 9788717055605
Category : Mosses
Languages : en
Pages : 612
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