Biodiversity

Question 1

What can increase biodiversity?

Answer 1

• Moderate frequency and intensity can increase biodiversity

Question 2

What happens when there are frequent and intense disturbance in a community?

Answer 2

• With frequent and intense disturbance the community is dominated by the few species tolerant of disturbance
- generally those with high intrinsic rates of increase, characteristic

Question 3

What happens when there are infrequent and low intensity disturbances in a community?

Answer 3

•With infrequent and low intensity disturbance the community is dominated by the few species that are effective at eliminating competitors
- generally those with low intrinsic rates of increase, characteristic of late succession

Question 4

What does the intermediate disturbance hypothesis predict?

Answer 4

The hypothesis predicts that species diversity will be highest at intermediate levels of disturbance

Question 5

What does the intermediate disturbance hypothesis predict about high levels of disturbance?

Answer 5

High levels of disturbance reduce diversity

Question 6

What does the intermediate disturbance hypothesis predict about low levels of disturbance?

Answer 6

Low levels of disturbance allow competition to reduce diversity

Question 7

What was found regarding the intermediate disturbance hypothesis?

Answer 7

20% of studies followed the predictions according to a 2001 Mackey & Currie literature review