Biology 2483A Lecture Notes - Lecture 3: Polar Night, Acclimatization, Water Balance
3 Jan 2018
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Document Summary
Each species has a range of environmental tolerances that determines its potential geographical distribution. The water balance of an organism is also important. Textbook goes into great detail of the physiology of water balance use level of detail in lecture as a measure of how much detail you"re expected to know on the exam. Not responsible for all the physiology of water balance. Each species has a range of environmental tolerances that determines its potential geographic distribution. Tolerance implies adaptation, species has adapted to tolerate that environment. Blue is where polar bears live, all year round. Orange is where arctic terns live somewhere in summer and avoid arctic winter by migrating away. A species" potential geographical distribution is constrained by a) Y axis is pop size, x axis is range of temperature. Tolerance curve for this species highest abundance in the middle of the temperature range the fish can live in.
