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Author :
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.64/5 ( download)
Download or read book Zoological Results of the Norwegian Scientific Expeditions to East-Greenland written by and published by . This book was released on 1933 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.30/5 ( download)
Download or read book Zoological Results of the Norwegian Scientific Expeditions to East-Greenland: Malaise R. Eine neue blattwespe aus written by and published by . This book was released on 1933 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arctic Institute of North America
Publisher :
ISBN 13 :
Total Pages : 1520 pages
Book Rating : 4.29/5 ( download)
Download or read book Arctic Bibliography written by Arctic Institute of North America and published by . This book was released on 1953 with total page 1520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eberhard Gwinner
Publisher : Springer Science & Business Media
ISBN 13 : 3642745423
Total Pages : 436 pages
Book Rating : 4.23/5 ( download)
Download or read book Bird Migration written by Eberhard Gwinner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Robert P. Stone
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.25/5 ( download)
Download or read book A Guide to the Deep-water Sponges of the Aleutian Island Archipelago written by Robert P. Stone and published by . This book was released on 2011 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Furthermore, sponges are extremely fragile and easily damaged by contact with fishing gear. High rates of fishery bycatch clearly indicate a strong interaction between existing fisheries and sponge habitat. Bycatch in fisheries and fisheries-independent surveys can be a major source of information on the location of the sponge fauna, but current monitoring programs are greatly hampered by the inability of deck personnel to identify bycatch. This guide contains detailed pecies descriptions for 112 sponges collected in Alaska, principally in the central Aleutian Islands. It addresses bycatch identification challenges by providing fisheries observers and scientists with the information necessary to adequately identify sponge fauna.Using that identification data, areas of high abundance can be mapped and the locations of indicator species of vulnerable marine ecosystems can be determined.
Author : Norske Novaja Semlja edspedisjon
Publisher :
ISBN 13 :
Total Pages : 758 pages
Book Rating : 4.48/5 ( download)
Download or read book Report on the Scientific Results of the Norwegian Expedition to Novaya Zemlya 1921: Zoology written by Norske Novaja Semlja edspedisjon and published by . This book was released on 1924 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John N.A. Hooper
Publisher : Springer Science & Business Media
ISBN 13 : 1461507472
Total Pages : 1779 pages
Book Rating : 4.75/5 ( download)
Download or read book Systema Porifera written by John N.A. Hooper and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1779 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research whilst compiling this book has uncovered a fauna about twice the size as that previously published in the literature and consequently Systema Porifera revises and stabilizes the systematics of the phylum to accommodate this new knowledge in a contemporary framework. Practical tools (key illustrations, descriptions of character) are provided to facilitate the assignment of approximately 680 extant and 100 fossil genera. Systema Porifera is unique making sponge taxonomy widely available at the practical level of classification (genera, families, order). It is a taxonomic revision of sponges and spongiomorphis (such as sphinctozoans and archaeocyathans) based on re-evaluation of type materials and evidence. It is also a practical guide to sponge identification providing descriptions and illustrations of characters and interpretation of their importance to systematics. Systema Porifera addresses many long standing nomenclatural problems and provides a sound baseline for future debate on sponges and their place in time and space. Systema Porifera describes 3 classes, 7 subclasses, 24 orders, 127 families and 682 valid genera of extant sponges (with over 1600 nominal generic names and an additional 500 invalid names treated). Treatment of the fossil fauna is less comprehensive or critical, although 6 classes, 30 orders, 245 families and 998 fossil genera are mentioned. Keys to all recent and many fossil taxa are provided.
Author : Olaf Holtedahl
Publisher :
ISBN 13 :
Total Pages : 498 pages
Book Rating : 4.54/5 ( download)
Download or read book Report of the Scientific Results of the Norwegian Expedition to Novaya Zemlya, 1921 written by Olaf Holtedahl and published by . This book was released on 1928 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Universitetsforlaget
Publisher :
ISBN 13 :
Total Pages : 364 pages
Book Rating : 4.12/5 ( download)
Download or read book Norwegian Scholarly Books, 1825-1967 written by Universitetsforlaget and published by . This book was released on 1968 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jens Böcher
Publisher : BRILL
ISBN 13 : 9004261052
Total Pages : 897 pages
Book Rating : 4.51/5 ( download)
Download or read book The Greenland Entomofauna written by Jens Böcher and published by BRILL. This book was released on 2015-05-26 with total page 897 pages. Available in PDF, EPUB and Kindle. Book excerpt: In The Greenland Entomofauna an international team of 64 taxonomic specialists provide for the first time a richly illustrated guide to the identification of the ≈1200 species of Hexapods/Insects, Arachnids and Myriapods so far known to occur in the country. While the composition, origin and adaptations of the Greenland fauna has always been a challenge to biogeographers and ecologists/ecophysiologists, the provision of a tool for detailed identification of its constituent species is now particularly timely, since global climate change will expectedly have a particularly noticeable impact on biota at high latitudes. This obviously renders the feasibility of monitoring distributional range shifts of the principal components of this biota a matter of some urgency. Contributors are: Achterberg, Cornelius van; Ahola, Matti; Barták, Miroslav; Behan-Pelletier, Valerie; Bird, Jeremy M.; Bøg, Katrine; Brodo, Fenja; Buhl, Peter N.; Dahl, Christine; Disney, R. Henry L.; Dittmar, Katharina; Fjellberg, Arne; Gammelmo, Øivind; Forshage, Mattias; Gerecke, Reinhard; Gertsson, Carl-Axel; Haastriter, Michael M.L.; Haenni, Jean-Paul; Heie, Ole E.; Heraty, John M.; Hodgson, Chris; Hodkinson, Ian D.; Horsfield, David; Huber, John T.; Jaschoff, Matthias; Jensen, Frank; Johanson, Kjell A.; Jussila, Reijo; Karsholt, Ole; Krzeminska, Ewa; Lantsov, Vladimir I.; Láska, Pavel; Lindegaard, Claus; Lyneborg, Leif (†); Makarova, Olga; Marusik, Yura M.; Mathis, Wayne N.; Mazánek, Libor; Michelsen, Verner; Munk, Thorkild (†); Murphy, William L.; Nielsen, Søren A.; Nielsen, Tore R.; Noyes, John S.; Oosterbroek, Pjotr; Ozerov, Andrey L.; Pape, Thomas; Pinto, John D.; Pollet, Marc; Rindal, Eirik; Rohácek, Jindrich; Simonsen, Thomas J.; Smith, Vincent S.; Söli, Geir; Starý, Jaroslav; Strassen, Richard zur; Svensson, Bo. W.; Vilhelmsen, Lars; Vilkamaa, Pekka; Wilson, Michael; Zatwarnicki, Tadeusz
