Interspecific competition

Question 1

What is interspecific competition?

Answer 1

Competition between different species, both affects the other negatively. Individuals suffer a reduction in vital rates due to resource exploitation

Question 2

What is inference competition?

Answer 2

Visible competition by individuals

Question 3

What is “ghost of competition past”?

Answer 3

Overdispersed niche spaces

Question 4

What are ecological guilds?

Answer 4

Species sharing resources

Question 5

What is the fundamental niche?

Answer 5

All the conditions that must occur for an organism to live and reproduce

Question 6

What is the realised niche?

Answer 6

The fundamental niche in the presence of predators

Question 7

What is the logistic growth model?

Answer 7

dX/dt = r(1-X/K)

Question 8

What is the Lotka Volterra competition model equation?

Answer 8

dX/dt = r(1-(X+aY)/K)

dY/dt = r(1-(Y+bX)/K)

r = growth rate of both X and Y when densities are very low
K = carrying capacity of X and Y in the absence of each other
a = competitive effects of Y on X
b = competitive effects of X on Y

Question 9

What are the parameters of the Lotka Volterra model?

Answer 9

a1 and b>1 = exclusion of 1, depedent on initial conditions
a1 = X excludes Y
a>1 and b

Question 10

What is the competitive exclusion principle?

Answer 10

If 2 species are competing for the same resource, one will exclude another