BIO120H1 Lecture Notes - Lecture 3: Sclerophyll, Outline Of Life Forms, Evaporation
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BIO120H1 Full Course Notes
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Reactions occur best at optimum temperature and osmotic conditions. Two types of range: range tolerance and geographical ranges. Animal ranges often correspond to biomes, i. e. , limited by climate and/or vegetation. Organismal digression: some animal ranges can transcend biomes (e. g. , the tiger can live in the cold or desert) Thermal ecology: aspects of heat exchange with environment. Conduction: direct contact with substrate (e. g. , feet lose heat to ground) Convection: heat transfer mediated by moving fluid (usually air or water) The larger the surface area, the slower the equilibration. If you are large, you can maintain your body heat easier. Bergmann"s rule: homeotherms tend to be larger at higher latitudes. (colder environments) Elephant don"t violate bergmann"s rule because of the wooly mammoths that have gone extinct but used to live in northern latitudes. E. g. , rabbits in the arctic and in the desert. More important than size or shape in heat regulation.