Topic 15 -Logistic Growth Curves

Question 1

when N=k what happens with r

Answer 1

r=0 (b=d)

Question 2

what is k

Answer 2

carrying capacity: population size N that the environment can carry or support

Question 3

k acts as an equilibrium around which a population will fluctuate by

Answer 3

increasing if below k

decreasing if above k

Question 4

determining k is difficult because

Answer 4

it does not necessarily remain the same over time

Question 5

what is the logistic growth equation

Answer 5

delta N/delta T =rN(1-N/K)

Question 6

what is (1-N/K)

Answer 6

it is a correction factor added to the exponential growth model

Question 7

as population size increases and comes closer to the carrying capacity

Answer 7

the effects of the correction factor become stronger

Question 8

as the population reaches the carrying capacity the rate of growth stops and if the population exceeds the carrying capacity

Answer 8

the population growth rate becomes negative

Question 9

shrinking of resources and the potential for unequal distribution of these resources will lead to crowding which

Answer 9

leads to increase mortality

fewer offspring produced per individual