Exam 57: Community Ecology

Suppose you were going up the west coast of Australia and observed that there are many species of termites in any one community, and the species composition changed little between communities. You would conclude that for these termites,

Which of the following statements about the patterns of succession in moraines at Glacier Bay is true?

Heterotrophic succession

In a food web with energy flowing up, a(n) _______ is one trophic level above a primary consumer.

A species that exerts an influence on a community that is much greater than its abundance would lead one to expect is called a(n)

The species that live and interact in an area constitute a(n)

If secondary consumers are the highest trophic level in a community, how many trophic levels are in the community (not counting decomposers)?

Three species of grasshoppers are found in a transect: 10 of species A, 15 of species B, and 25 of species C. What is the Shannon diversity index of this transect? (Note: * = times, and ln (x) is the natural logarithm of x.)

An ecological community is

In 1988, Yellowstone National Park experienced fires affecting over 36 percent of its area. What can you predict happened after the fires died out?

In the equation for net primary production, would you ever expect R to be zero?

Which of the following studies have been helpful in answering questions regarding the use of monocultures?

The reintroduction of wolves into Yellowstone in 1995 caused a decrease in the population of _______. This decline enabled aspen seedlings to become reestablished.

Which of the following statements about island biogeography is false?

If 640 units of energy move through the primary producers of a community and 128 units move through the primary consumers, then the ecological efficiency is _______.

In most communities, which of the following is greater in tertiary consumers as compared to secondary consumers?

Following a severe ice storm in 1991 in Rochester, New York, the composition of the trees changed as the community recovered from the disturbance. This is an example of

Which of the following statements about succession is false?

In which of the following communities would one expect to see more biomass in primary consumers than in primary producers?

Primary succession is least likely to occur after which of the following?