Ch.10- Population Growth and Dynamics: Exponential Growth

Question 0

2 models for population growth

Answer 0

• Exponential population growth
• Logistic population growth

    *Both models assume closed populations (No immigration or emigration )

Question 1

What changes population size?

Answer 1

Births, Deaths, Immigration & Emigration

Question 2

Current population size

Answer 2

-Nt
~N=size(# indivs)
~t= current time

Question 3

Future population size

Answer 3

Nt+1=Nt+B+I-D-E
or
DeltaN=(B+I)-(D+E)

Question 4

Open Population

Answer 4

movement of individuals into and out of a population

Question 5

Closed population

Answer 5

no movement of individuals into and out of a population

DeltaN= B-D

Question 6

Discrete population

Answer 6

-With non-overlapping generations
~described geometrically
-Breeding season

Question 7

Continuous population

Answer 7

-With overlapping generations
~described exponentially
-No breeding season

Question 8

Discrete population growth

Answer 8

-alpha= geometric population growth rate

~successive generation increase in size by a constant proportion

Question 9

Continuous population growth

Answer 9

If we assume continuous births:

~Future population size: Nt+1