26: Logistic Growth Flashcards
1
Q
What is environmental resistance?
A
all the factors that slow down population growth
2
Q
What are limiting factors?
A
space, food, predators, water, disease
3
Q
What is logistic growth?
A
as the population number increases, the rate of growth decreases; follows an S-curve
4
Q
What is carrying capacity (k)?
A
maximum population size of a species that a habitat can support over a given period
5
Q
What is overshoot?
A
populations can exceed their carrying capacity
6
Q
What is crash?
A
populations below their carrying capacity
7
Q
What are examples of crash?
A
- reindeer in St Matthew’s island
- potato blight triggered a famine that killed or displaced 25% of the Irish population (between 1845-1850)
