BIOL-1110 Lecture Notes - Lecture 29: Doubling Time, Infant Mortality, Population Ecology
10 May 2016
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How are population densities estimated: population ecology the study of the dynamics of that population and its interactions with the environment, 2 methods used to estimate population density. Sampling the number of individuals in several small areas are counted. This number is taken as the average density of the whole area. Mark-and-recapture animals are captured, marked with a unique identifier and released. Animals are recaught for a 2nd sample and from that 2nd sample you count how many have a mark. Equation: (c/n) = (m/r) n = (rc/m: n = population density, c = initial # captured first census, m = # of marked individuals recaptured, r = # of total captured on second census. = [(total # captured 2nd time)(# marked)]/(total # recaptured with mark) Identify and describe the three types of population dispersion. What factors are associated with each type of dispersion: dispersion differences in spatial patterns across a populations range, clumped dispersion.
