L4 Measuring Population Growth Flashcards
1
Q
what is lambda? (λ) and how do you calculate it?
A
It is the geometric growth rate (discrete)
λ = Nt+1/ Nt
2
Q
if there is a pond with 30 newts in 2018 and then 40 newts in 2019 what is λ?
(λ = Nt+1/ Nt)
A
λ = Nt+1/ Nt 40/30 = 1.33 λ = 1.33
3
Q
what do these express about a population?
λ > 1
λ < 1
λ = 1
A
population is growing
population is shrinking
population is stable
4
Q
what is a simple explanation for continuous growth? and equation?
A
growth continues to double overtime
r(continuous growth) = b - d
5
Q
What is SSD?
A
Stable Stage Distribution,
