BISC 204 Lecture Notes - Lecture 6: Time Series, Song Sparrow, Net Reproduction Rate

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Bisc 204 lecture 6: populations (ii), geometric, exponential, logistic. Estimate the rate of change with time. Note: births = deaths is an oversimplification for nearly all populations. Even though populations are generally stable over long-time frames--constantly growing or shrinking. Estimate change through time (and rate of change) Density independent: grows to infinity or shrinks to zero. How an idealized population would grow in a limitless environment. No, there are many factors affecting the density (carrying capacity) Nt+1=nt = geometric population growth rate* = rate of geometric population growth (proportional increase) this is the proportional change in population size at each time-step and can thought to be roughly equivalent to r0, the net reproductive rate. R = per capita growth rate* this can be considered as the average contribution per individual to the change in population size (rate) we can estimate this using life-tables. Can also be integrated and written as discrete form:

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