BISC 102 Lecture Notes - Lecture 20: Quadrat, Population Ecology, Logistic Function
3 Mar 2017
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Document Summary
Population = a group of individuals of one species living in a given area. Individuals in a population share resources, similar environmental factors, and interact with one another and environment. Describe populations and ask questions about how individuals vary through space. Population characteristics: range: geographic area a population resides in how far, how deep, etc, dispersion: pattern of spacing between individuals. Clumped individuals gathered into patches (shared resources, predator avoidance, social interaction, etc. ) Uniform individuals evenly spaced (competition for scarce resource, territoriality protecting the nest from neighbours) Random unpredictable spacing (resources abundant and abiotic conditions same for the given area: population size: number of individuals. Larger populations estimated with sampling (counting proportion of population to estimate the total number of individuals per unit are = quadrat sampling) Mark recapture used to estimate mobile animals: m1/n1 = m2/n m1=# of marked individuals recaptured, n1=# of all individuals recaptured, m2=# of all marked individuals,
