BIO205H5 Lecture Notes - Lecture 5: Bighorn Sheep, Ice Crystals, Cryoprotectant
Document Summary
Not more than 70% body water frozen temperature drop cannot be too fast. Penguin picture: arctic birds called northern penguins (they"re not actually penguins though, adapted to the environment. What is a population: a population is A group of individuals of the same species. Inhabit a given area at the same time. Populations have a distribution: the arctic birds are along the canadian and arctic ridges and alaskan area. We can study abundance: how many individuals in a population, population density = # of individuals/unit area, area over which population is distributed. Elephants are big and easily seen; when they"re in the trees you can"t see them and we can"t follow them even with aerial. Whales don"t like the sound of sonar and not accurate reflective of the count: we have to take a sample because we can"t possibly count it all. N: number of animals in second sample. R: number of marked individuals in second sample.
