登入
選單
返回
Google圖書搜尋
Arctic Life of Birds and Mammals
L. Irving
其他書名
Including Man
出版
Springer Science & Business Media
, 2012-12-06
主題
Science / Life Sciences / Zoology / General
Medical / General
Medical / Research
ISBN
3642856551
9783642856556
URL
http://books.google.com.hk/books?id=VmHsCAAAQBAJ&hl=&source=gbs_api
EBook
SAMPLE
註釋
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.