Lecture 19: Modeling Competition.

Question 1

What dose (alpha)12 represent?

Answer 1

The effect of one individual of species 2 on rate of

population growth of species 1

Question 2

What dose Alpha represent?

Answer 2

Alpha represents the competition coefficient, the magnitude of negative effects of individuals of one species on individuals of a second species

Question 3

What dose the Competition Coefficient describe?

Answer 3

The competition coefficient describes the per capita

effects of one species on the other

Question 4

What dose it mean when (alpha)12 = 5?

Answer 4

that one individual of species
two has the same effect on one individual of species
1 as five individuals of species one.

Question 5

How do you measure the effect of size of population one population on another?

Answer 5

(alpha) 12 x N2 = effect of size of population 2 on population 1
(alpha) 21 x N1 = effect of size of population one on population two.

Question 6

What is the Isoclines of zero population growth (ZNGI)?

Answer 6

When population
size of a species and its competitor where population
growth of the species in competition is zero

Question 7

Coexistence of two species possible if the two

isoclines cross, but will be ____ or ______

Answer 7

Stable

Unstable