BIL 150 Lecture Notes - Lecture 1: Zero Population Growth, Exponential Growth, Molecular Clock
29 Sep 2016
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Bio - explains the fundamental concepts of life and of cells at the cellular, genetic, and organismal levels of biological organization. Relevance - to learn how your own body works. Ecologists study population growth in ideal environments to reveal how fast populations could grow. Change in population size = birth + immigrants entering - deaths - emigrants leaving. B = bn to calculate expected number of births per year. D = mn to calculate expected number of deaths per unit time in a population of any size. Zero population growth occurs when per capita birth and death rate are equal (r = 0) N/ t = rn nal equation for change in population size dn/dt = rinstn equation for exponential growth. Exponential growth - population has access to abundant food and are free to reproduce at their physiological capacity. Increases at a constant rate, j-shaped growth curve on a graph.
