chapter 18

chapter 18 - Population isoclines No predators =...

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Population isoclines No predators = exponential growth of prey Prey population controlled by predator Predator population dependent upon prey population As predator population increases, prey mortality increases Lotka-Volterra Model Mathematical equation for population isoclines Prey population: o Population growth of prey equals zero when… o Number of prey killed=the growth of the prey o Mortality=growth o If mortality >per capita growth Predator population: o Predator growth rate is zero when…. o Rate of growth = mortality o Density increases when rate of increase>mortality o Density decreases when rate of increase<mortality Equilibrium isoclines-fig 18.8 o Actual abundance is determined o Prey Isocline (equilibrium isocline) Greatest number of predators that a prey population can sustain o Predator Isocline(equilibrium isocline Minimum level of prey that sustain growth of a predator population
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Population Trajectory- Figure 18.9 Predator always lags behind the prey
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chapter 18 - Population isoclines No predators =...

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