BIOLOGY 1M03 Lecture Notes - Lecture 32: Big Bang, Forego, River Source
28 Mar 2017
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Lecture 31 life tables & life history (population ecology. Slide 1: looking at life table or female lizards. Survivorship and reproduction: survivorship = lx = nx/n0, reproduction (fecundity) = mx. Survivorship x reproduction = average number of offspring produced per female (lx * R0 the net reproductive rate (growth rate per generation; or average number o female offspring produced over the life of a female) R0 = 1 means each female is replaced by another (zero population growth) Many species show that growth is not tied to a particular annual season (eg humans yeast and bacteria) R = the per capita growth rate: measures growth at any particular instant, aka the instantaneous growth rate. Discrete growth equation relates to species that have discrete seasonal growth rates r relates to lambda review slide. Making projections with life tables: slide 5: @ age 0, there is no survivorship / reproduction, goal = calculating total population size.
