BIOL 1070 Lecture Notes - Lecture 16: Acclimatization, Winter Flounder, Torpor
18 Feb 2021
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Document Summary
Macroevolutionary: large scale patterns, origins and disappearances of entire clades, millions and millions of years. Times scales depend on the organism: 2 years (generational) could be weeks for another organism. Its relative to the organism and how it experiences time. Acute: fairly short-term stressor, behavioral (too hot, going to sit in shade), immediate in environment. Too hot, may start sweating, too cold may shiver. Short-term effects eg being put into an ice bath: increased heart rate, shrinkage, increased receptors firing, ventilation. 13 degrees: feels warm when it"s coming out of winter, and colder when it"s coming out of summer. Feels different cause number of different physiological changes that are involved in climatization. Still talking about individuals undergoing this change, not the whole population. Generational: persists over multiple generations, years to decays. An extreme version would be rapid climate change. Adaptation in the population: natural selection as certain traits being more accepted.
