10 Questions
What is a density-independent limiting factor?
Natural disasters such as droughts and floods
How do populations typically respond to 'crash' caused by density-independent factors?
They may quickly build up again
Which of the following can devastate coral reefs according to the text?
Hurricanes and their waves
What effect can long-term droughts have on population sizes?
They cause severe declines in populations
In what way did the moose population respond after the wolf population crashed on Isle Royale?
It grew exponentially for a time
What was the main reason many moose died from starvation on the island?
Intense cold weather
How did the size of the moose population affect the impact of bad weather on them?
The larger population suffered more due to increased competition for food.
What does the situation with the European rabbits in Australia demonstrate?
Density-independent factors can lead to rapid population growth.
How did the lack of emigration options impact the moose population during the harsh winter?
It led to many moose dying from starvation.
Why were artificial density-independent control measures like hunting considered ineffective?
They offered little hope of success and were expensive.
Explore how environmental extremes like hurricanes, droughts, floods, and wildfires can impact populations regardless of size or density. Learn about population crashes and recovery after such events.
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