Question 1

The classic study demonstrating that the Pisaster sea star promoted predator-mediated coexistence was conducted by _________?

Accepted Answer

A)  Robert Paine 
B)  Joseph Connell 
C)  Jared Diamond 
D)  David Tilman 
A)  Robert Paine 
B)  Joseph Connell 
C)  Jared Diamond 
D)  David Tilman

Question 2

The explanation(s)for the trend in greater species richness near the tropics than near the poles is:

Accepted Answer

A)  Variation in energy input. 
B)  Greater evolutionary age of the tropics. 
C)  Decrease in habitat fragmentation. 
D)  Increase in trade winds. 
A)  Variation in energy input. 
B)  Greater evolutionary age of the tropics. 
C)  Decrease in habitat fragmentation. 
D)  Increase in trade winds.

Question 3

Which of the following would be considered an island where species diversity would be limited by area?

Accepted Answer

A)  A lake 
B)  An island in the Pacific ocean 
C)  A gap of forest cleared 
D)  Soil that has much less phosphorous and nitrogen than the soil surrounding it 
A)  A lake 
B)  An island in the Pacific ocean 
C)  A gap of forest cleared 
D)  Soil that has much less phosphorous and nitrogen than the soil surrounding it

Question 4

Functionally predation can act on a community to increase diversity.This affect on communities is similar to what we have seen with intermediate _____________.

Accepted Answer

A)  Competition 
B)  Parasitism 
C)  Resources 
D)  Disturbances 
A)  Competition 
B)  Parasitism 
C)  Resources 
D)  Disturbances

Question 5

According to Joseph Connell's theory regarding disturbance,when would communities be expected to contain the most species?

Accepted Answer

A)  When the frequency of disturbance is at the lowest levels. 
B)  When the frequency of disturbance is at intermediate levels. 
C)  When the frequency of disturbance is at highest levels. 
D)  When there is no disturbance. 
A)  When the frequency of disturbance is at the lowest levels. 
B)  When the frequency of disturbance is at intermediate levels. 
C)  When the frequency of disturbance is at highest levels. 
D)  When there is no disturbance.

Question 6

Are the results of research by Joseph Connell,which led him to develop the intermediate disturbance hypothesis,universal in the sense that the greatest amounts of species richness are always at intermediate frequencies of disturbance?

Accepted Answer

A)  Yes, this is a universal rule and there are no biomes where species richness peaks occur at low or high frequencies of disturbance. 
B)  No, this is not a universal rule and it cannot be demonstrated that it applies to any other communities. 
C)  Yes, this is a law in ecology that has allowed researchers to understand that reality is not so complex and that disturbance is the preeminent abiotic force structuring communities. 
D)  No, this is not a universal rule because in some communities diversity will peak at intermediate frequencies of disturbance, but this is not the case in all communities. 
A)  Yes, this is a universal rule and there are no biomes where species richness peaks occur at low or high frequencies of disturbance. 
B)  No, this is not a universal rule and it cannot be demonstrated that it applies to any other communities. 
C)  Yes, this is a law in ecology that has allowed researchers to understand that reality is not so complex and that disturbance is the preeminent abiotic force structuring communities. 
D)  No, this is not a universal rule because in some communities diversity will peak at intermediate frequencies of disturbance, but this is not the case in all communities.

Question 7

What term characterizes the equilibrium point for species richness of an island?

Accepted Answer

A)  R 
B)  H 
C)  S* 
D)  N 
A)  R 
B)  H 
C)  S* 
D)  N

Question 8

In some tropical mountains,ecologists have noticed bird species diversity declining in recent years despite seeing normally low elevation species beginning to appear in higher elevations.They blame climate change and increasing temperatures.What might be going on?

Accepted Answer

A)  As temperatures increase, upper elevation conditions become increasingly favorable to lower elevation species. 
B)  Increasing temperatures at high elevations are driving high elevation species lower to seek cooler temperatures. 
C)  Lower elevation species are moving up the mountain and out competing the species traditionally found there. 
D)  As temperatures decrease, upper elevation conditions become increasingly favorable to lower elevation species. 
A)  As temperatures increase, upper elevation conditions become increasingly favorable to lower elevation species. 
B)  Increasing temperatures at high elevations are driving high elevation species lower to seek cooler temperatures. 
C)  Lower elevation species are moving up the mountain and out competing the species traditionally found there. 
D)  As temperatures decrease, upper elevation conditions become increasingly favorable to lower elevation species.

Question 9

What is the relationship between number of island species and island area?

Accepted Answer

A)  As island area increases the number of island species decreases because of increased interspecific competition. 
B)  There is a positive relationship between number of species and area of an island. 
C)  There is a negative relationship between number of species and area of an island. 
D)  There actually is no relationship between the number of island species and island area. 
A)  As island area increases the number of island species decreases because of increased interspecific competition. 
B)  There is a positive relationship between number of species and area of an island. 
C)  There is a negative relationship between number of species and area of an island. 
D)  There actually is no relationship between the number of island species and island area.

Question 10

Vascular plants:

Accepted Answer

A)  Can have a hump shaped relationship between species richness and productivity. 
B)  Usually have a U shaped relationship between species richness and productivity 
C)  Sometimes have no relationship between species richness and productivity. 
D)  Show several different relationships between species richness and productivity. 
A)  Can have a hump shaped relationship between species richness and productivity. 
B)  Usually have a U shaped relationship between species richness and productivity 
C)  Sometimes have no relationship between species richness and productivity. 
D)  Show several different relationships between species richness and productivity.

The classic study demonstrating that the Pisaster sea star promoted predator-mediated coexistence was conducted by _________?

The explanation(s)for the trend in greater species richness near the tropics than near the poles is:

Which of the following would be considered an island where species diversity would be limited by area?

Functionally predation can act on a community to increase diversity.This affect on communities is similar to what we have seen with intermediate _____________.

According to Joseph Connell's theory regarding disturbance,when would communities be expected to contain the most species?

Are the results of research by Joseph Connell,which led him to develop the intermediate disturbance hypothesis,universal in the sense that the greatest amounts of species richness are always at intermediate frequencies of disturbance?

What term characterizes the equilibrium point for species richness of an island?

In some tropical mountains,ecologists have noticed bird species diversity declining in recent years despite seeing normally low elevation species beginning to appear in higher elevations.They blame climate change and increasing temperatures.What might be going on?

What is the relationship between number of island species and island area?

Vascular plants:

Ecology and How to Do It

Ecology’s Evolutionary Backdrop

Physical Conditions and the Availability of Resources

Climate and the World’s Biomes

Birth, Death and Movement

Interspecific Competition

Predation, Grazing and Disease

Molecular and Evolutionary Ecology

From Populations to Communities

The Flux of Energy and Matter Through Ecosystems

Global Biogeochemical Cycles and Their Alteration by Humans

Conservation Ecology

The Ecology of Human Population Growth, Disease, and Food Supply

Filters

Exam 10: Patterns in Species Richness

The classic study demonstrating that the Pisaster sea star promoted predator-mediated coexistence was conducted by _________?

The explanation(s)for the trend in greater species richness near the tropics than near the poles is:

Which of the following would be considered an island where species diversity would be limited by area?

Functionally predation can act on a community to increase diversity.This affect on communities is similar to what we have seen with intermediate _____________.

According to Joseph Connell's theory regarding disturbance,when would communities be expected to contain the most species?

Are the results of research by Joseph Connell,which led him to develop the intermediate disturbance hypothesis,universal in the sense that the greatest amounts of species richness are always at intermediate frequencies of disturbance?

What term characterizes the equilibrium point for species richness of an island?

In some tropical mountains,ecologists have noticed bird species diversity declining in recent years despite seeing normally low elevation species beginning to appear in higher elevations.They blame climate change and increasing temperatures.What might be going on?

What is the relationship between number of island species and island area?

Vascular plants:

Ecology and How to Do It

Ecology’s Evolutionary Backdrop

Physical Conditions and the Availability of Resources

Climate and the World’s Biomes

Birth, Death and Movement

Interspecific Competition

Predation, Grazing and Disease

Molecular and Evolutionary Ecology

From Populations to Communities

The Flux of Energy and Matter Through Ecosystems

Global Biogeochemical Cycles and Their Alteration by Humans

Conservation Ecology

The Ecology of Human Population Growth, Disease, and Food Supply

Filters