TOPIC 11 Population Growth

Question 1

what can we say when the per capita growth rate (r) is less than 0 - negative?

Answer 1

more deaths are occurring than births and the population is shrinking

Question 2

what can we say when the per capita growth rate (r) is greater than 0 - positive?

Answer 2

the population is increasing since more births are occurring than deaths

Question 3

what can we say when the per capita growth rate (r) is 0?

Answer 3

there is no change in population and it is known as “zero population growth”

Question 4

what is the relationship between generation time and rmax

Answer 4

shorter generation time has higher intrinsic rates of increase than those with long generation time

Question 5

what is a logistic model

Answer 5

an assessment of population growth considering limitations

Question 6

what is an exponential model

Answer 6

an assessment of population growth without limitations ; in ideal circumstances with infinite resources

Question 7

what happens to per capita growth rate (r) in a logistic model

Answer 7

r is decreasing as the population gets larger

Question 8

In exponential growth, when will the population reach maximum?

Answer 8

exponential growth curves do not have a maxima since they are limitless