4/10/24 - Lecture 7: Population Growth 1

Question 1

Mark recapture method

Answer 1

Capture, mark, and release M individuals
Recapture another set of n individuals later
Count how many of n were marked from before, m

Question 2

Mark recapture CALCULATIONS

Answer 2

N/M = n/m

N: population size
M: initial captured individuals
n: recaptured individuals
m: recaptured marked individuals

Question 3

What is the rate of change of population size as an equation?

Answer 3

Rate of population change = birth rate - death rate + immigration rate - emigration rate

Question 4

Closed population

Answer 4

Immigration or emigration negligible; changes dominated by births and deaths

Question 5

Open population

Answer 5

Immigration and emigration substantial

Question 6

Equation for population with respect to time

Answer 6

N(t) = N0e^(rt)
N0: initial population
r: constant
t: time

Question 7

What is the relationship of population density on per capita fecundity and mortality?

Answer 7

Often the higher the population density, the lower the per capita fecundity and higher the mortality

Question 8

Logistic population growth equation

Answer 8

dN/dt = r(1-N/K)N
dN/dt: rate of change of population with respect to time
r: intrinsic rate of growth
N: total population
K: carrying capacity