Lecture 30

Question 1

Mark Recapture

Answer 1

1. Capture and mark a number of individuals
2. release marked animals and allow them to mix
3. recapture a number of individuals and determine the fraction that are already marked
4. estimate population size assuming fair sampling of population

Question 2

Mark Recapture Equation

Answer 2

M2/n2=n1/N
-N1 = number caught and marked in first capture
-M2 = number of marked individuals caught in 2nd capture
-N2 = number of total individuals caught in 2nd capture
N = estimate of total population size

Question 3

General Growth Equation

Answer 3

dN/dt = (B-D) xN
dN/dt = change in the number of population over change in time
b= average birth rate
d= average death rate
N= number of individuals at current time
R = B-D = per capita growth rate

Question 4

Intrinsic Rates of Increase

Answer 4

rate of increase of a species under r max

- populations do not increase at r max

Question 5

Carrying Capacity

Answer 5

maximum population size that a particular environment can sustain

Question 6

Logistic Growth Model

Answer 6

dN/dt = R0Nx((K-N)/K)
K = carrying capacity
R0 = rate of growth when population is very small

Question 7

Discrete Growth

Answer 7

Nt = N0 lambda ^t

Question 8

Stable Population Structure

Answer 8

lambda = R0/g
G = generation time
R0 = net reproductive rate of the population