BIOL 2260 Lecture Notes - Lecture 2: Periphyton, Parnassius Smintheus, Tiger Beetle
13 Sep 2016
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Document Summary
Biol 2260h populations: abundance and distributions - 12/09/16. Population ecology: individual species in specific areas. 6 main concepts: distribution limits, dispersal, metapopulations, distribution patterns, organism size and population density, commonness and rarity. Populations: a group on individuals of a single species inhabiting a specific area all populations have several characteristics: distribution, density, and other characteristics including age distribution, sex ratio, birth and death rates, immigration, and emigration, etc. Absolute density: how dense to population is in a given area. Ecological density: how dense a population is over the area they could inhabit. Be will be discussing absolute density, not ecological density. Muskox migrate to move away from deep snow, and head up into higher altitudes. Kangaroos: three largest kangaroo species in australia have different habitats closely tied to climate. They are more resistance to drying/desiccation, as well as biological competition. Desiccation: more complex than what it first seems partially due to the fact that.
