BIO120H1 Chapter Notes - Chapter 10: Metapopulation, Limit Cycle, Reaction Rate Constant
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BIO120H1 Full Course Notes
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10. 1 fluctuation is the rule for natural populations. Variation in density depends on 2 factors: the amount the environment fluctuates, the stability of the population if these are unstable, population will fluctuate. Periodic cycle a pattern of fluctuation with regular intervals between high and low values. 10. 2 temporal variation affects the age structure of populations. Different classes of age structure also effect population growth. 10. 3 population cycles result from time delays in the response of populations to their own densities. Time delay a delay in the response of a population or other system to change in the environment. In a discrete-time model, the change in population size from one time interval to the next is n( t) = n( t+ 1) n( t) shows intrinsic growth rate can cause periodic cycles. Figure 12. 9a population may adopt one of three oscillation patterns.
