Chapter 52 outline - Population ecology is concerned with...

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Unformatted text preview: Population ecology is concerned with measuring changes in the size and composition of a population. A population is a group of individuals of a single species living in the same general area Two important characteristics of a population 1. Density 2. Dispersion Individuals are captured, marked with a tag and released. After a period of time individuals are captured again. 2nd capture yields both marked and unmarked individuals. Researchers then estimate the total # of individuals in the population using a proportion. Total population= Number marked in first catch x Total number in second catch Number of recaptures in second catch Random Uniform Clumped I II III 50 100 1 10 100 1,000 Percentage of maximum life span Number of survivors (log scale) A reproductive table is an age-specific summary of the reproductive rates in a population. Reproductive output for sexual species is the product of the proportion of females of a given age that are breeding and the number of female offspring of those breeding females. Iteroparity- produce offspring...
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This note was uploaded on 12/02/2009 for the course SCI 90210 taught by Professor Durkka during the Spring '09 term at École Normale Supérieure.

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Chapter 52 outline - Population ecology is concerned with...

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