BIO120H1 Lecture 6: BIO120 Lecture 6 Notes

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29 Nov 2013
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BIO120H1 Full Course Notes
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BIO120H1 Full Course Notes
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Lecture 6: population ecology: models without age structure. Population = collection of individuals of the same species, population are delimited (i. e. surrounded) N = population size, number of individuals. Population density = n/area in a certain area. Population ecology => focusses on factors in the environment that determine the size of populations. Population genetics => looking at the genetic make-up of populations. Ususally for animals it"s easier to recognize and determine individuals. Plants and some groups of animals are more difficult to determine. Larkspurs => flowers make lots of seeds as a result of being pollinated, each seed is s unique genotype, the seeds are spread through the environment, and they grow. Aspens => they are clonal stems that come from the same seed, one seed produces many identical, connected stems. Many identical seeds produce many identical, unconnected plants. Infinitesimal steps , growing continuously (differential equations, calculus) Logistic growth model (add allee effects, add time lags)

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