BIOL 1020 Lecture Notes - Exponential Growth, Logistic Function, Founder Effect

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1 Aug 2012
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A population consists of the individuals of species within a given area. The members of a population are distributed over space, and they differ in age and size. The age distribution of individuals are spread over the environment describe its population structure. The number of individuals of a population per unit of area is its population density. The structure of a population changes continually because demographic events are common occurrences. Estimating population densities is easiest for sedentary organisms. Counting mobile organisms is much more difficult because individuals move into and out of census area. (write equation here). Birth and death rates can be estimated from population density data (write equation here). The number of a population still alive at a given period of time in the future survivorship. An organism"s life history describes how it allocates its time and energy among the various activities that occupy its life. Ecological interactions influence the evolution of life histories.

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