Author: Å.Ø PedersemPublisher:
ISBN:
Category : Rock ptarmigan
Languages : en
Pages : 28
Book Description
Svalbard Rock Ptarmigan (Lagopus Mutus Hyperboreus)
Author: Å.Ø PedersemPublisher:
ISBN:
Category : Rock ptarmigan
Languages : en
Pages : 28
Book Description
Remarks on the Svalbard Ptarmigan (Lagopus Mutus Hyperboreus Sundev.)
Author: Sigurd JohnsenSurvival of the Fattest
Author: Atle MortensenRemarks on the Svalbard Ptarmigan, Lagopus Mutus Hyperboreus Sundev, Etc
Author: Sigurd JOHNSENThe North American Grouse: Their Biology and Behavior
Author: Paul JohnsgardPublisher: Lulu.com
ISBN: 1609620879
Category : Nature
Languages : en
Pages : 177
Book Description
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.
Biological Rhythms
Author: Vinod KumarPublisher: Springer Science & Business Media
ISBN: 366206085X
Category : Science
Languages : en
Pages : 268
Book Description
(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.
Ecology, Conservation, and Management of Grouse
Author: Brett K. SandercockPublisher: Univ of California Press
ISBN: 0520270061
Category : Medical
Languages : en
Pages : 376
Book Description
"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
Wildlife Review
Author: Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 1198
Book Description
Constraints on the Biomechanics of Locomotion in the Svalbard Rock Ptarmigan (Lagopus Muta Hyperborea)
Author: Andres Camilo Marmol GuijarroPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Arctic Animals and Their Adaptations to Life on the Edge
Author: Arnoldus Schytte BlixPublisher: Tapir Academic Press
ISBN: 9788251920506
Category : Nature
Languages : en
Pages : 304
Book Description
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.