Ebook: Arctic Life of Birds and Mammals: Including Man
Author: Laurence Irving (auth.)
- Tags: Life Sciences general, Biomedicine general
- Series: Zoophysiology and Ecology 2
- Year: 1972
- Publisher: Springer-Verlag Berlin Heidelberg
- Edition: 1
- Language: English
- pdf
After travel through Alaska during the Second World War, in 1947 I went to Barrow with a very lively group of biologists. From their productive research developed the Arctic Research Laboratory. While we examined the rather surpris ingly modest metabolic rates of arctic warmblooded animals in cold, PER SCHO LANDER proposed and then carried out measurements of metabolism of some tropi cal animals in Panama. The differences could be formulated to show the basis of adaptation to arctic cold and to tropical warmth. Imagination and logic were required to formulate the comparison so that it could become a part of science, but the essential measurements were derived from animals and plants in their own arctic and tropical environments. Characteristics that adapt the forms of life to climatic conditions of various environments appear clear in the large dimensions of extremely differing climates. At the time of my arrival in Alaska many of the arctic Eskimos were still largely dependent on natural resources of their immediate and local environment, in which great seasonal changes in temperature and solar radiation appeared as dominant factors. The living environment on which they subsisted was also mar kedly affected by the changes of the seasons, in particular by the change in state of water to ice that terminated summer and by the melting that brought the late transition from winter to summer.
Content:
Front Matter....Pages I-XI
Introduction....Pages 1-3
Environment of Arctic Life....Pages 4-21
Mammals of the Arctic....Pages 22-36
Arctic Land Birds and Their Migrations....Pages 37-61
Maintenance of Arctic Populations: Birds....Pages 62-78
Maintenance of Arctic Populations of Mammals....Pages 79-94
Warm Temperature of Birds and Mammals....Pages 95-103
Maintenance of Warmth by Variable Insulation....Pages 104-113
Metabolic Supply of Heat....Pages 114-136
Heterothermic Operation of Homeotherms....Pages 137-162
Size and Seasonal Change in Dimensions....Pages 163-177
Insulation of Man....Pages 178-189
Back Matter....Pages 191-194
Content:
Front Matter....Pages I-XI
Introduction....Pages 1-3
Environment of Arctic Life....Pages 4-21
Mammals of the Arctic....Pages 22-36
Arctic Land Birds and Their Migrations....Pages 37-61
Maintenance of Arctic Populations: Birds....Pages 62-78
Maintenance of Arctic Populations of Mammals....Pages 79-94
Warm Temperature of Birds and Mammals....Pages 95-103
Maintenance of Warmth by Variable Insulation....Pages 104-113
Metabolic Supply of Heat....Pages 114-136
Heterothermic Operation of Homeotherms....Pages 137-162
Size and Seasonal Change in Dimensions....Pages 163-177
Insulation of Man....Pages 178-189
Back Matter....Pages 191-194
....