2.2 Flashcards
what is the difference between logistic and exponential growth
exponential growth implies no limit, and can only occur in places with no limits on resources and space
logistic growth does have a limit, and shows how big a population can get before the environment no longer supports it
what is K
K= carrying capacity (maximum population supported by an area)
what is r
r=maximum per capita growth
what is N
N = the population size
N(0) is the initial population size
what is t
t = time
what happens to N as r increases?
as r increases, N also increases
what happens to dN/dt as N approaches K?
as N approaches K, dN/dt decreases
what type of population growth does this inequality show?
B+I > D+E
positive
what type of population growth does this inequality show?
B+I = D+E
no growth
what type of population growth does this inequality show?
B+I < D+E
negative growth
N(0)= 10
Born=50
Died=10
what is r?
r= 4
(b-d)/N=r
(50-10)/10=4
