Question 1

Neutral models emphasize dispersal and chance.

Accepted Answer

A) True 
 B)False

Question 2

Why is dispersal important in neutral models?

Accepted Answer

Dispersal brings spe

Question 3

The local ecotypes of the evening primrose

Accepted Answer

A)  correspond to variation in their herbivores. 
B)  are independent of variation in their herbivores. 
C)  are independent of the variation in the environment. 
D)  filter the local herbivores. 
E)  none of the above 
A)  correspond to variation in their herbivores. 
B)  are independent of variation in their herbivores. 
C)  are independent of the variation in the environment. 
D)  filter the local herbivores. 
E)  none of the above

Question 4

If competition structures a community,

Accepted Answer

A)  niche space should be neutral. 
B)  there is no niche overlap among species. 
C)  niches should be widely separated in niche space. 
D)  the environment does not filter species. 
E)  none of the above 
A)  niche space should be neutral. 
B)  there is no niche overlap among species. 
C)  niches should be widely separated in niche space. 
D)  the environment does not filter species. 
E)  none of the above

Question 5

Exotic species often disrupt natural communities by __________.

Accepted Answer

Competing

Question 6

If niches on islands are arranged at random,

Accepted Answer

A)  competition will not occur. 
B)  niches are hyperdispersed. 
C)  niches are clumped. 
D)  they represent the null hypothesis. 
E)  none of the above 
A)  competition will not occur. 
B)  niches are hyperdispersed. 
C)  niches are clumped. 
D)  they represent the null hypothesis. 
E)  none of the above

Question 7

Phylogenetic clustering and phylogenetic overdispersion are mutually exclusive patterns.

Accepted Answer

A) True 
 B)False

Question 8

Competitive networks are

Accepted Answer

A)  based on apparent competition. 
B)  the result of facilitation. 
C)  due to the ghost of competition past. 
D)  due to keystone predators. 
E)  none of the above 
A)  based on apparent competition. 
B)  the result of facilitation. 
C)  due to the ghost of competition past. 
D)  due to keystone predators. 
E)  none of the above

Question 9

Explain the concept of the Ghost of Competition Past.

Accepted Answer

If competition structured the

Question 10

Tropical forests species diversity is

Accepted Answer

A)  affected by environmental filtering and negative density-dependent effects. 
B)  affected only by environmental filtering. 
C)  affected only by negative density-dependent effects. 
D)  determined by the C:N ratio 
E)  none of the above 
A)  affected by environmental filtering and negative density-dependent effects. 
B)  affected only by environmental filtering. 
C)  affected only by negative density-dependent effects. 
D)  determined by the C:N ratio 
E)  none of the above

Question 11

Communities that conform to a neutral model

Accepted Answer

A)  may have been structured by competition in the past. 
B)  are not environmentally filtered. 
C)  converge on other communities. 
D)  have non-random positions in niche space. 
E)  none of the above 
A)  may have been structured by competition in the past. 
B)  are not environmentally filtered. 
C)  converge on other communities. 
D)  have non-random positions in niche space. 
E)  none of the above

Question 12

If niches are hyperdispersed in niche space we conclude that competition structures the community.

Accepted Answer

A) True 
 B)False

Question 13

Explain the concept of the null hypothesis in community structure.

Accepted Answer

The null hypothesis states tha

Neutral models emphasize dispersal and chance.

Why is dispersal important in neutral models?

The local ecotypes of the evening primrose

If competition structures a community,

Exotic species often disrupt natural communities by __________.

If niches on islands are arranged at random,

Phylogenetic clustering and phylogenetic overdispersion are mutually exclusive patterns.

Competitive networks are

Explain the concept of the Ghost of Competition Past.

Tropical forests species diversity is

Communities that conform to a neutral model

If niches are hyperdispersed in niche space we conclude that competition structures the community.

Explain the concept of the null hypothesis in community structure.

Introduction to Ecology

Adaptation and Evolution

Adaptations to the Physical Environment

Terrestrial Communities

Fresh-water and Marine Communities

Behavioral Ecology

The Ecology of Intraspecific Variation

Demography

Population Regulation

Life History Strategies

Competition

Coevolution I Exploitative Interactions

Mutualism

Ecological Succession

Species Diversity

Energy Flow and Trophic Structure

Biogeochemical Cycles

Conservation Biology

Landscape Ecology

Human Global Ecology

Filters

Exam 14: The Structure of Communities

Neutral models emphasize dispersal and chance.

Why is dispersal important in neutral models?

The local ecotypes of the evening primrose

If competition structures a community,

Exotic species often disrupt natural communities by __________.

If niches on islands are arranged at random,

Phylogenetic clustering and phylogenetic overdispersion are mutually exclusive patterns.

Competitive networks are

Explain the concept of the Ghost of Competition Past.

Tropical forests species diversity is

Communities that conform to a neutral model

If niches are hyperdispersed in niche space we conclude that competition structures the community.

Explain the concept of the null hypothesis in community structure.

Introduction to Ecology

Adaptation and Evolution

Adaptations to the Physical Environment

Terrestrial Communities

Fresh-water and Marine Communities

Behavioral Ecology

The Ecology of Intraspecific Variation

Demography

Population Regulation

Life History Strategies

Competition

Coevolution I Exploitative Interactions

Mutualism

Ecological Succession

Species Diversity

Energy Flow and Trophic Structure

Biogeochemical Cycles

Conservation Biology

Landscape Ecology

Human Global Ecology

Filters