4-15-08 notes

4-15-08 notes - April 15, 2008 Population Ecology Notes...

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April 15, 2008 Population Ecology Notes Population ecology is the study of populations in relation to the environment including environmental influences on population density and distribution, age structure, and variations in population size Examples of applications of population ecology o Invasive species (animals that come in and take over) o Endangered species o Pest control (agriculture) o Human population growth Population: a group of individuals of the same species living in the same general area Density: the number of individuals per unit area (oak trees/km 2 ) Dispersion: pattern of spacing among individuals within the boundaries of the population How to estimate density? o Count all individuals within the boundaries of a population o Sampling techniques—estimate population size o Mark-recapture: trap, mark, and recapture animals Dispersion: patterns of spacing among individuals within a population o Clumped Could be from seed dispersal—more individuals growing near the parent plant Different wolf packs—wolves clump because their chances of survival are greater. They hunt in big packs so that they can take down bigger animals MOST COMMON DISTRIBUTION o Uniform Territorial
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This note was uploaded on 04/26/2009 for the course EBIO 1220 taught by Professor Demig-addams during the Spring '07 term at Colorado.

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4-15-08 notes - April 15, 2008 Population Ecology Notes...

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