Biology 2483A Lecture Notes - Lecture 3: Hypothermia, Transpiration, Wood Frog

• School: Western University
• Department: Biology
• Course: Biology 2483A
• Professor: Graeme Taylor

Document Summary

Lecture 4 chapter 4 temperature and water bio 2483a: each species has a range of environmental tolerances that determines its potential geographical distribution, tolerance: conditions that animals can tolerate year-round, eg. Polar bears tolerate arctic conditions year-round: avoidance: conditions in an environment that animals avoid, eg. Arctic terns migrate to avoid the arctic winter. A spe(cid:272)ies(cid:859) potential geographi(cid:272)al distri(cid:271)ution is (cid:272)onstrained (cid:271)y: the physical environment, availability of resources and energy. A spe(cid:272)ies (cid:858)a(cid:272)tual(cid:859) geographi(cid:272)al distri(cid:271)ution is (cid:272)onstrained (cid:271)y: disturbance: factors that can disrupt an ecosystems such as forest fires, volcanos, hurricanes, human interference, biological factors: such as, their ability to disperse, competition between species for land. Ecotypes: locally-adapted populations within a species: ecotypes may eventually become new species. Increase convection: when cool water and air move across the surface of a warmer body, heat energy is carried away via convection.