Final Flashcards
What is competition?
Interaction between species\organisms in which both species\organisms are harmed.
What is exploitation competition?
Competition of shared resource
What is interference competition?
One population or organism directly prevents other populations or organisms from using the resource EXCEPT FOR HABITAT
What is allelopathy?
Plant releases biotoxins into the soil that prevent competitors from growing (interference competition)
What is the type of competition when one population or organism occupies space that then is no longer available to other populations or organisms?
Pre-emptive competition
What is the name of the model competition?
Lotka-Volterra competition model
Imagine you are studying competitive interactions between a population of lions NL and a population of hyenas NH. What is α ?
A measure of the effect of the hyena population on the growth of the lion population
Imagine you are studying competitive interactions between a population of lions NL and a population of hyenas NH, what does it mean if α = 0.5?
The effect of each hyena on lion population growth is as strong as the effect of each lion on lion population growth.
Describe Case 1: Species 1 wins in competition
1\𝛽 < K1\K2 >𝛼
Describe Case 2: Species 2 wins in competition
1\𝛽 > K1\K2 < 𝛼
Describe Case 3: Coexistence in a stable equilibrium
1\𝛽 > K1\K2 > 𝛼
Describe Case 4: Unstable equilibrium
1\𝛽 < K1\K2 < 𝛼
What is the principle of competitive exclusion?
It’s states that two species that compete for the exact same resources cannot stably coexis
Name the 7 Assumptions of the Lotka-Volterra model
- No genetic structure
- No age (stage\size) structure
- No time lags
- Resources are limited
- Competition coefficients and carrying capacities are constant
- Linear density-dependence
- No emigration \ immigration
