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Unformatted text preview: Population Ecology (Chapter 53) Population Ecology Study of populations in relation to their environment o How biotic and abiotic factors influence density, distribution, size and age structure of populations Population: a group of individuals of a single species living in the same general area Density The number of individuals per unit area or volume Typically estimated Dynamic o Addition birth, immigration (influx) o Removal death, emigration (outflux) Dispersion The pattern of spacing among individuals within the boundaries of the population Clumped: aggregated in patches; most common pattern Uniform: evenly distributed; result of antagonistic social interactions (territoriality); not common Random: position of individuals independent of others; when abiotic factors are homogeneous; not common Factors contributing to population dynamics Survival & Reproduction Life history traits: traits that affect an organisms schedule of reproduction and survival...
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- Spring '11