EEMB 2 Lecture Notes - Lecture 7: Periodic Function, Adzuki Bean, Oatmeal
15 Mar 2018
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Document Summary
Predation: member of one species consume all or part of another species or each other. 1. in the absence of predators, prey population grow exponentially-dn/dt=rn. Encounters with prey increases with an increase in the numbers of predators and an increase in the numbers of prey. The exact number of prey encountered and consumed depends on the search and attack efficiency of the predator. Prey population growth: dn/dt=rn - (c p n: in the absence of food, predator populations decline exponentially d2=mortality rate. Counteracted by predator birth rates which depend on: The rate of prey consumption (c p n) The predator conversion efficiency (g) at turning food into offsprings. Dp/dt=g c p n - d2 p. In nature environment is continually changing and population densities shift to new values. Oscillations are due to time delays in the response of predator density to that of prey density and vice versa. First to experimentally test lotka-volterra predator-prey model predictions.
