BIOLOGY 3SS3 Lecture Notes - Lecture 10: 1Time Airline
26 Jan 2017
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Build on the linear model: our linear population model is: dn/dt= (b -d)n. Per-capita rates are constant: population-level rates are linear. Behavior is exponential i. e. the total birth/death rate is b/d n. Per capita rate shows birth & death per individual: corresponds to the time plot showing growth on a log scale. On the log scale we see multiplicativeor proportionalchange. Population perspective: population grows faster & faster from a population perspective (as opposed to a constant rate at an individual perspective) Total rate shows birth & death for the whole population: corresponds to the time plot showing growth on a linear scale. On the linear scale we see additive or absolute change. Non-linear model: population has per capitabirth rate b(n) & death rate d(n, our non-linear model is: dn/dt= (b(n) -d(n))n r(n)n. Defines how fast the population is changing at any instant. Recruitment: recruitment is when an organism moves from one life stage to another:
