Question 1

Which of the following is true about temporal variation in community biomass?

Accepted Answer

A)   It is a characteristic of high species richness.
B)   It increases with increases in species richness.
C)   It decreases with increases in species richness.
D)   It is predicted by the intermediate disturbance hypothesis.
E)   It is predicted by Clements' organismic model of community function.F) All of the above
G) B) and D)

Question 2

Species turnover on islands has been observed to be low. What does this suggest about process in the equilibrium model of island biogeography?

Accepted Answer

A)   Facilitation is of minor importance to this model.
B)   Secondary succession rarely succeeds.
C)   Succession on most islands is a fairly orderly process.
D)   The intermediate disturbance hypothesis can explain colonization rates.
E)   Immigration of new species often can not keep up with extinction.F) A) and C)
G) B) and C)

Question 3

Clements argued that the final stage of succession was always

Accepted Answer

A)   a climax community.
B)   a cohort.
C)   a sere.
D)   a secondary sere.
E)   a cohort and a sere.F) A) and D)
G) A) and C)

Question 4

The species richness of trees can be predicted by

Accepted Answer

A)   the time hypothesis.
B)   species-area effect.
C)   patterns of smaller insects.
D)   the evapotranspiration rate.
E)   the species-area effect.F) A) and E)
G) A) and B)

Question 5

How are species-area relationships traditionally plotted?

Accepted Answer

A)   on a log-log plot.
B)   on a bar graph.
C)   based on a source pool.
D)   using a Shannon diversity index.
E)   None of these choices are correct.F) None of the above
G) A) and B)

Question 6

Diversity indices such as the Shannon diversity index are very valuable to

Accepted Answer

A)   agricultural economists who study crop production.
B)   the evapotranspiration rate.
C)   the formation of climax communities.
D)   conservation biologists who study rare species.
E)   metagenomics.F) D) and E)
G) A) and B)

Question 7

Which of these patterns would the intermediate disturbance hypothesis NOT explain?

Accepted Answer

A)   rapid growth and diversification in a recently glaciated area
B)   low diversity where disturbance is rare
C)   low diversity where disturbance is extremely frequent
D)   high diversity in areas with frequent disturbance
E)   high diversity in areas with frequent disturbance and low diversity where disturbance is rareF) A) and B)
G) B) and C)

Question 8

Each phase of succession is called a

Accepted Answer

A)   series.
B)   stage.
C)   chronometer.
D)   sere.
E)   facilitation.F) B) and D)
G) A) and D)

Question 9

Shannon diversity (Hs)

Accepted Answer

A)   goes up with increases in the number of species sampled and is higher when individuals are more equitably distributed among species.
B)   is higher when individuals are more equitably distributed among species.
C)   is independent of abundance.
D)   increases in areas undergoing secondary succession.
E)   is higher when individuals are more equitably distributed among species and is independent of abundance.F) B) and E)
G) A) and B)

Question 10

The idea that most ecological communities merge into one another gradually is part of the

Accepted Answer

A)   equilibrium model.
B)   species-area effect.
C)   time hypothesis.
D)   organismic model.
E)   principle of species individuality.F) B) and E)
G) A) and E)

Question 11

In Frederic Clements' view, succession proceeds to an end point called a(n)

Accepted Answer

A)   S1.
B)   S2.
C)   pioneer community.
D)   climax community.
E)   None of these choices are correct.F) C) and D)
G) A) and D)

Question 12

Lake Baikal in Siberia is an ancient lake with a very diverse fauna. This diversity is consistent with the

Accepted Answer

A)   time hypothesis.
B)   individualistic model.
C)   organismic model.
D)   principle of species individuality.
E)   effects of decreasing latitude and decreasing temperatures.F) B) and C)
G) None of the above

Question 13

Joseph Connell proposed that at low rates of disturbance, a community will become dominated by K-selected species.

Accepted Answer

A) True 
 B)False

Question 14

If you (incorrectly)  proposed that tundra, the world's largest land biome, contains high species richness, your proposal would be consistent with the

Accepted Answer

A)   area hypothesis.
B)   time hypothesis.
C)   productivity hypothesis.
D)   MTE.
E)   MDE.F) C) and D)
G) B) and D)

Question 15

The productivity hypothesis would predict that there would be more species in North America than in the Amazon.

Accepted Answer

A) True 
 B)False

Question 16

Support for the succession mechanism of tolerance is found in research on plant communities that shows

Accepted Answer

A)   the island biogeographic theory is generally supported.
B)   turnover is not what would be predicted by other theories.
C)   climax communities never form as predicted by Clements.
D)   succession is determined largely by species that exist in the ground as seeds or old roots.
E)   None of these choices are correct.F) A) and E)
G) A) and D)

Question 17

In the wake of the retreat of a glacier, leaving bare rock and sand, the action of the first colonizing species in this environment to make the area suitable for other species is called

Accepted Answer

A)   secondary succession.
B)   climax succession.
C)   seral accumulation.
D)   facilitation.
E)   optimal succession.F) A) and B)
G) A) and C)

Question 18

The individualistic model of a community as an assemblage coexisting primarily of species similar in their physiological requirements was proposed by

Accepted Answer

A)   Frederic Clements.
B)   Charles Darwin.
C)   Henry Allan Gleason.
D)   David Tilman.
E)   Joseph Connell.F) A) and B)
G) C) and E)

Exam 58: Community Ecology

Which of these patterns would the intermediate disturbance hypothesis NOT explain?

Correct Answer
verified

Which of the following is true about temporal variation in community biomass?

Correct Answer
verified

If you (incorrectly) proposed that tundra, the world's largest land biome, contains high species richness, your proposal would be consistent with the

Correct Answer
verified

Each phase of succession is called a

Correct Answer
verified

Shannon diversity (Hs)

Correct Answer
verified

Clements argued that the final stage of succession was always

Correct Answer
verified

Species turnover on islands has been observed to be low. What does this suggest about process in the equilibrium model of island biogeography?

Correct Answer
verified

Diversity indices such as the Shannon diversity index are very valuable to

Correct Answer
verified

The idea that most ecological communities merge into one another gradually is part of the

Correct Answer
verified

Lake Baikal in Siberia is an ancient lake with a very diverse fauna. This diversity is consistent with the

Correct Answer
verified

Joseph Connell proposed that at low rates of disturbance, a community will become dominated by K-selected species.

Correct Answer
verified

The productivity hypothesis would predict that there would be more species in North America than in the Amazon.

Correct Answer
verified

In the wake of the retreat of a glacier, leaving bare rock and sand, the action of the first colonizing species in this environment to make the area suitable for other species is called

Correct Answer
verified

How are species-area relationships traditionally plotted?

Correct Answer
verified

Support for the succession mechanism of tolerance is found in research on plant communities that shows

Correct Answer
verified

In Frederic Clements' view, succession proceeds to an end point called a(n)

Correct Answer
verified

The species richness of trees can be predicted by

Correct Answer
verified

The individualistic model of a community as an assemblage coexisting primarily of species similar in their physiological requirements was proposed by

Correct Answer
verified

Exam 58: Community Ecology

Which of these patterns would the intermediate disturbance hypothesis NOT explain?

Correct AnswerverifiedShow Answer

Which of the following is true about temporal variation in community biomass?

Correct AnswerverifiedShow Answer

If you (incorrectly) proposed that tundra, the world's largest land biome, contains high species richness, your proposal would be consistent with the

Correct AnswerverifiedShow Answer

Each phase of succession is called a

Correct AnswerverifiedShow Answer

Shannon diversity (Hs)

Correct AnswerverifiedShow Answer

Clements argued that the final stage of succession was always

Correct AnswerverifiedShow Answer

Species turnover on islands has been observed to be low. What does this suggest about process in the equilibrium model of island biogeography?

Correct AnswerverifiedShow Answer

Diversity indices such as the Shannon diversity index are very valuable to

Correct AnswerverifiedShow Answer

The idea that most ecological communities merge into one another gradually is part of the

Correct AnswerverifiedShow Answer

Lake Baikal in Siberia is an ancient lake with a very diverse fauna. This diversity is consistent with the

Correct AnswerverifiedShow Answer

Joseph Connell proposed that at low rates of disturbance, a community will become dominated by K-selected species.

Correct AnswerverifiedShow Answer

The productivity hypothesis would predict that there would be more species in North America than in the Amazon.

Correct AnswerverifiedShow Answer

In the wake of the retreat of a glacier, leaving bare rock and sand, the action of the first colonizing species in this environment to make the area suitable for other species is called

Correct AnswerverifiedShow Answer

How are species-area relationships traditionally plotted?

Correct AnswerverifiedShow Answer

Support for the succession mechanism of tolerance is found in research on plant communities that shows

Correct AnswerverifiedShow Answer

In Frederic Clements' view, succession proceeds to an end point called a(n)

Correct AnswerverifiedShow Answer

The species richness of trees can be predicted by

Correct AnswerverifiedShow Answer

The individualistic model of a community as an assemblage coexisting primarily of species similar in their physiological requirements was proposed by

Correct AnswerverifiedShow Answer

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