Exam 30: Species Interactions and Community Ecology

In the 1960s, Robert Paine used removal experiments to evaluate the effects of predation by Pisaster.

Realized niches are larger than fundamental niches.

Most gradient analyses point toward the individualistic view of communities.

Allopatric species live in the same places.

Match each lettered cell in the table with the description that belongs in that cell. -both populations may be at a disadvantage

What does the intermediate disturbance hypothesis suggest?

Why are zebras striped?

Mutualistic relationships between animal species are common.

Match each lettered cell in the table with the description that belongs in that cell. -one population obtains energy; the other is damaged (usually not killed)

What is the difference between a decomposer and a detritivore? Provide an example of each.

Suppose there are two forests. In the first forest, 39 of the 50 trees represent the dominant species. In the second forest, there are 2 of each of the 10 different species. What conclusion can be drawn regarding these two forests?

Match each description to the appropriate term. -situation where both species benefit

Match each description to the appropriate term. -one organism feeds off of another organism, causing harm

How do pitcher plants obtain nitrogen? Describe two examples.

Define the competitive exclusion principle.

Elephants and some other large carnivores are species with few predators.

Use the terms in the list to identify each lettered portion of the food web. -primary producers

Use the terms in the list to identify each lettered portion of the food web. -primary consumers

In interference competition, two or more populations use the same limiting resource.

Explain when and why resource partitioning occurs.