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Author : Åshild Ønvik Pedersen
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)
Download or read book Svalbard Rock Ptarmigan (Lagopus Mutus Hyperboreus) written by Åshild Ønvik Pedersen and published by . This book was released on 2005 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sigurd Johnsen
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (465 download)
Download or read book Remarks on the Svalbard Ptarmigan (Lagopus Mutus Hyperboreus Sundev.) written by Sigurd Johnsen and published by . This book was released on with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Atle Mortensen
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (923 download)
Download or read book Survival of the Fattest written by Atle Mortensen and published by . This book was released on 1985 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sigurd JOHNSEN
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (561 download)
Download or read book Remarks on the Svalbard Ptarmigan, Lagopus Mutus Hyperboreus Sundev, Etc written by Sigurd JOHNSEN and published by . This book was released on 1942 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul Johnsgard
Publisher : Lulu.com
ISBN 13 : 1609620879
Total Pages : 177 pages
Book Rating : 4.6/5 (96 download)
Download or read book The North American Grouse: Their Biology and Behavior written by Paul Johnsgard and published by Lulu.com. This book was released on 2016 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ten currently recognized species of grouse in North America have played an important role in America's history, from the famous but ill-fated heath hen, a primary source of meat for the earliest New England immigrants, to the ruffed grouse, currently one of the most abundant and soughtafter upland game birds in more than 40 states and provinces. This book summarizes the ecology, reproductive biology, and social behavior of all ten of the extant North American grouse species. It also describes the current status of grouse populations, some of which are perilously close to extinction. The social behavior of grouse is of special biological interest because among these ten species there is a complete mating system spectrum, from seasonally monogamous pair-bonding to highly promiscuous mating patterns. The latter group illustrates the strong structural and behavioral effects of sexual selection resulting from nonmonogamous mating. These influences reach a peak in the development by some grouse species of engaging in mating "leks," arena-like competitions performed by males while attempting to attract fertile females, and also provide opportunities for females to select optimum mating partners. These sexual competitions also promote strong differences evolving in sexual signaling behaviors ("displays") among closely related species. Nevertheless, a relatively high incidence of mating errors and resulting hybridization often occurs in spite of these marked behavioral differences. In addition to a text of 101,000 words, the book includes 16 range maps, 37 line drawings, and 38 photographs by the author, as well as nearly 1,400 literature citations.
Author : Vinod Kumar
Publisher : Springer Science & Business Media
ISBN 13 : 366206085X
Total Pages : 268 pages
Book Rating : 4.6/5 (62 download)
Download or read book Biological Rhythms written by Vinod Kumar and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Chapters 11 to 14) summarise important features of the biological clock at the level of whole animal covering all vertebrate classes (fish to mammal). Chapters 15 and 16 are on long term (seasonal) rhythms in plants and higher vertebrates. Short term rhythms (ultradian rhythms), the significance of having a clock system in animals living in extreme (arctic) environments, and the diversity of circadian responses to melatonin, the key endocrine element involved in regulation of biological rhythms, have been discussed in Chapters 17 to 19. Finally, a chapter on sensitivity to light of the photoperiodic clock is added which, using vertebrate examples, illustrates the importance of wavelength and intensity of light on circadian and non-circadian functions. A well-known expert writes each chapter. When presenting information, the text provides consistent thematic coverage and feeling for the methods of investigation. Reference citation within the body of the text adequately reflects the literature as subject is developed. A chapter begins with an abstract that enables a reader to know at the first glance the important points covered in that chapter. The chapter concludes with a full citation of references included in the text, which could be useful for further reading. The book ends with a comprehensive subject index that may be useful for quick searches.
Author : Brett K. Sandercock
Publisher : Univ of California Press
ISBN 13 : 0520270061
Total Pages : 376 pages
Book Rating : 4.5/5 (22 download)
Download or read book Ecology, Conservation, and Management of Grouse written by Brett K. Sandercock and published by Univ of California Press. This book was released on 2011-09-04 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Summarizing current knowledge of grouse biology, this volume is organized in four sections--spatial ecology, habitat relationships, population biology, and conservation and management--and offers insights into spatial requirements, movements, and demography of grouse. Much of the research employs emerging tools in ecology that span biogeochemistry, molecular genetics, endocrinology, radio-telemetry, and remote sensing".--Adapted from publisher descrip tion on back cover
Author : Andres Camilo Marmol Guijarro
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Constraints on the Biomechanics of Locomotion in the Svalbard Rock Ptarmigan (Lagopus Muta Hyperborea) written by Andres Camilo Marmol Guijarro and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1198 pages
Book Rating : 4.:/5 (319 download)
Download or read book Wildlife Review written by and published by . This book was released on 1980 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arnoldus Schytte Blix
Publisher : Tapir Academic Press
ISBN 13 : 9788251920506
Total Pages : 304 pages
Book Rating : 4.9/5 (25 download)
Download or read book Arctic Animals and Their Adaptations to Life on the Edge written by Arnoldus Schytte Blix and published by Tapir Academic Press. This book was released on 2005 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Where and what is the Arctic? What animals live there, and how are they distributed? How do they cope with cold in their austere environment, and how can Arctic mammals survive birth when it is 40 degrees below freezing. How can seals dive to a depth of 1000 metres and stay submerged for more than an hour, and how does complete darkness in winter affect the inhabitants of the high Arctic? This book answers these questions and also gives an introduction to the Arctic. It is based on the author's 40 years of experience in the Arctic, its environment and animal life. As this book contains almost 200 illustrations and deals with the entire Arctic animal kingdom, it will be suitable as a textbook for courses in Arctic biology, and also serve specialists in the field. It is a reference book and a source of information about published original literature.
Author : A. T. Bergerud
Publisher : U of Minnesota Press
ISBN 13 : 9781452900216
Total Pages : 412 pages
Book Rating : 4.9/5 (2 download)
Download or read book Adaptive Strategies and Population Ecology of Northern Grouse written by A. T. Bergerud and published by U of Minnesota Press. This book was released on 1988 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jørgen Berge
Publisher : Springer Nature
ISBN 13 : 303033208X
Total Pages : 380 pages
Book Rating : 4.0/5 (33 download)
Download or read book POLAR NIGHT Marine Ecology written by Jørgen Berge and published by Springer Nature. This book was released on 2020-04-08 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until recently, the prevailing view of marine life at high latitudes has been that organisms enter a general resting state during the dark Polar Night and that the system only awakens with the return of the sun. Recent research, however, with coordinated, multidisciplinary field campaigns based on the high Arctic Archipelago of Svalbard, have provided a radical new perspective. Instead of a system in dormancy, a new perspective of a system in full operation and with high levels of activity across all major phyla is emerging. Examples of such activities and processes include: Active marine organisms at sea surface, water column and the sea-floor. At surface we find active foraging in seabirds and fish, in the water column we find a high biodiversity and activity of zooplankton and larvae such as active light induced synchronized diurnal vertical migration, and at seafloor there is a high biodiversity in benthic animals and macroalgae. The Polar Night is a period for reproduction in many benthic and pelagic taxa, mass occurrence of ghost shrimps (Caprellides), high abundance of Ctenophores, physiological evidence of micro- and macroalgal cells that are ready to utilize the first rays of light when they appear, deep water fishes found at water surface in the Polar night, and continuous growth of bivalves throughout the winter. These findings not only begin to shape a new paradigm for marine winter ecology in the high Arctic, but also provide conclusive evidence for a top-down controlled system in which primary production levels are close to zero. In an era of environmental change that is accelerated at high latitudes, we believe that this new insight is likely to strongly impact how the scientific community views the high latitude marine ecosystem. Despite the overwhelming darkness, the main environmental variable affecting marine organisms in the Polar Night is in fact light. The light regime during the Polar Night is unique with respect to light intensity, spectral composition of light and photoperiod.
Author : Karen Holder
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (294 download)
Download or read book Rock Ptarmigan written by Karen Holder and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Julian Dowdeswell
Publisher : Cambridge University Press
ISBN 13 : 0521813336
Total Pages : 312 pages
Book Rating : 4.5/5 (218 download)
Download or read book Islands of the Arctic written by Julian Dowdeswell and published by Cambridge University Press. This book was released on 2002-11-25 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arctic islands are characterised by beautiful mountains and glaciers, in which the wildlife lives in delicate balance with its environment. It is a region with a long history of exploration and exploitation by humans, now experiencing rapid environmental change. All of these themes are explored in Islands of the Arctic, richly illustrated with superb photographs from the Canadian Arctic Archipelago, Greenland, Svalbard and the Russian Arctic. It begins with the various processes shaping the landscape: glaciers, rivers and coastal processes, the role of ice in the oceans and the weather and climate. The flora and fauna are described, and the human impact on this fragile region; from the sustainable approach of the Inuit, to the devastating damage inflicted by hunters and in the cause of military security. Finally, the future prospects of the region are considered. This book will be enjoyed by anyone with an interest in remote landscapes.
Author :
Publisher :
ISBN 13 :
Total Pages : 618 pages
Book Rating : 4.:/5 (319 download)
Download or read book The Great Basin Naturalist written by and published by . This book was released on 1988 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Karen Ruth Holder
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (294 download)
Download or read book Rock Ptarmigan written by Karen Ruth Holder and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 342 pages
Book Rating : 4.:/5 (319 download)
Download or read book Polar Research written by and published by . This book was released on 2005 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
