Which is an example of demographic stochasticity?
I. increased moose mortality when the population exceeds carrying capacity
II. variation in death rate of mice due to chance differences between individuals
III. increases and decreases in seed production due to changes in rainfall

Question

Quizplus · Accepted Answer

Demographic stochasticity refers to fluctuations in population size resulting from random events affecting births and deaths within a population. Option II describes such variation in death rate of mice due to chance differences between individuals, making it the correct choice. Option I refers to environmental stochasticity, which involves fluctuations in birth and death rates arising from environmental factors. Option III also refers to environmental stochasticity, specifically due to changes in rainfall affecting seed production. Therefore, the best choice is B - II only, as it captures an example of demographic stochasticity.

Which Is an Example of Demographic Stochasticity