Question 1

Which measure of diversity has the lowest sensitivity to sample size?

Accepted Answer

A)  Species richness 
B)  Gini-Simpson 
C)  Shannon 
D)  Brillouin 
A)  Species richness 
B)  Gini-Simpson 
C)  Shannon 
D)  Brillouin B

Question 2

Most communities grade into each other continuously rather than form distinct, clearly separated groups.

Accepted Answer

A) True 
 B)False  True

Question 3

If the number of species present in both communities is 12, and community 1 has 5 unique species and community 2 has 3 unique species, what is the Sorensen community similarity index?

Accepted Answer

A)  0.75 
B)  2.67 
C)  0.6 
D)  0.36 
E)  16 
A)  0.75 
B)  2.67 
C)  0.6 
D)  0.36 
E)  16 A

Question 4

If a community exhibits lognormal rank abundance then we may conclude there are

Accepted Answer

A)  A large number of rare species, a large number of common species and a few species of intermediate rank 
B)  A few rare species, a few common species and a large number of species of intermediate rank 
C)  A few rare species and a large number of very common species 
D)  A few common species and a large number of rare species 
E)  Rare species are very common 
A)  A large number of rare species, a large number of common species and a few species of intermediate rank 
B)  A few rare species, a few common species and a large number of species of intermediate rank 
C)  A few rare species and a large number of very common species 
D)  A few common species and a large number of rare species 
E)  Rare species are very common

Question 5

Which measure of diversity has the best discriminant ability?

Accepted Answer

A)  Species richness 
B)  Gini-Simpson 
C)  Berger-Parker 
D)  Brillouin 
E)  Shannon 
A)  Species richness 
B)  Gini-Simpson 
C)  Berger-Parker 
D)  Brillouin 
E)  Shannon

Question 6

There are five species in a community of 100 individuals. Species 1 has 40 individuals, and species 2-5 each have 15 individuals. What is the evenness of the community?

Accepted Answer

A)  1.138 
B)  1.287 
C)  -5.15 
D)  1.504 
E)  1.609 
A)  1.138 
B)  1.287 
C)  -5.15 
D)  1.504 
E)  1.609

Question 7

Diversity indices are

Accepted Answer

A)  Graphical plots of numbers of individuals against rank 
B)  A measure of the numbers of species in an area and the relative distributions of individuals among species 
C)  A measure of species richness 
D)  Measures of species individuality 
E)  Equivalent to the inverse of species richness 
A)  Graphical plots of numbers of individuals against rank 
B)  A measure of the numbers of species in an area and the relative distributions of individuals among species 
C)  A measure of species richness 
D)  Measures of species individuality 
E)  Equivalent to the inverse of species richness

Question 8

The Brillouin index has better discriminate ability than the Shannon index.

Accepted Answer

A) True 
 B)False

Question 9

What is the effective number of species if there are three species in a community, two with 20 individuals and one with 10 individuals?

Accepted Answer

A)  0.36 
B)  0.64 
C)  2.78 
D)  1.56 
E)  3 
A)  0.36 
B)  0.64 
C)  2.78 
D)  1.56 
E)  3

Question 10

There are five species in a community of 100 individuals. Species 1 has 40 individuals, and species 2-5 each have 15 individuals. What is Hmax?

Accepted Answer

A)  -0.366 
B)  -0.285 
C)  -0.322 
D)  1.609 
E)  1.138 
A)  -0.366 
B)  -0.285 
C)  -0.322 
D)  1.609 
E)  1.138

Question 11

The lower the value of the Shannon index, the higher the community diversity.

Accepted Answer

A) True 
 B)False

Question 12

A community has four species, two with 20 individuals and two with 30 individuals. What is the value of the Shannon index?

Accepted Answer

A)  -0.322 
B)  -1.0 
C)  1.366 
D)  0.039 
E)  0.666 
A)  -0.322 
B)  -1.0 
C)  1.366 
D)  0.039 
E)  0.666

Question 13

The most equitable rank abundance plot is the

Accepted Answer

A)  MacArthur fraction 
B)  Random fraction 
C)  Lognormal 
D)  Dominance pre-emption 
A)  MacArthur fraction 
B)  Random fraction 
C)  Lognormal 
D)  Dominance pre-emption

Question 14

If the number of species present in both communities is 12, and community 1 has 5 unique species and community 2 has 3 unique species, what is the Jaccard community similarity index?

Accepted Answer

A)  12 
B)  9 
C)  0.6 
D)  0.36 
E)  4 
A)  12 
B)  9 
C)  0.6 
D)  0.36 
E)  4

Question 15

Community A contains two species of birds, each with 10 individuals. Community B contains one species with 18 individuals and four species with one individual. Community B is more diverse as measured by the Shannon Index.

Accepted Answer

A) True 
 B)False

Question 16

A community has three species, one with 30 individuals, one with 70, and the last with 100. What is the value of the Gini-Simpson index?

Accepted Answer

A)  0.0225 
B)  0.1225 
C)  0.395 
D)  0.5 
E)  0.605 
A)  0.0225 
B)  0.1225 
C)  0.395 
D)  0.5 
E)  0.605

Question 17

When species proportional abundance in a community is plotted against species rank, the result is termed

Accepted Answer

A)  Evenness 
B)  Species diversity 
C)  The effective number of species 
D)  A rank abundance diagram 
E)  The lognormal distribution 
A)  Evenness 
B)  Species diversity 
C)  The effective number of species 
D)  A rank abundance diagram 
E)  The lognormal distribution

Question 18

The view that species in an area are usually associated in to one structured, functioning community is known as the organismic model.

Accepted Answer

A) True 
 B)False

Question 19

Which diversity index is calculated using this equation: -$\Sigma$pilnpi

Accepted Answer

A)  Jaccard 
B)  Gini-Simpson 
C)  Simple matching 
D)  Dominance 
E)  Shannon 
A)  Jaccard 
B)  Gini-Simpson 
C)  Simple matching 
D)  Dominance 
E)  Shannon

Question 20

Information statistic indices are more influenced by rare species than are dominance indices.

Accepted Answer

A) True 
 B)False

Exam 17: Species Diversity

Which measure of diversity has the lowest sensitivity to sample size?

Most communities grade into each other continuously rather than form distinct, clearly separated groups.

If the number of species present in both communities is 12, and community 1 has 5 unique species and community 2 has 3 unique species, what is the Sorensen community similarity index?

If a community exhibits lognormal rank abundance then we may conclude there are

Which measure of diversity has the best discriminant ability?

There are five species in a community of 100 individuals. Species 1 has 40 individuals, and species 2-5 each have 15 individuals. What is the evenness of the community?

Diversity indices are

The Brillouin index has better discriminate ability than the Shannon index.

What is the effective number of species if there are three species in a community, two with 20 individuals and one with 10 individuals?

There are five species in a community of 100 individuals. Species 1 has 40 individuals, and species 2-5 each have 15 individuals. What is Hmax?

The lower the value of the Shannon index, the higher the community diversity.

A community has four species, two with 20 individuals and two with 30 individuals. What is the value of the Shannon index?

The most equitable rank abundance plot is the

If the number of species present in both communities is 12, and community 1 has 5 unique species and community 2 has 3 unique species, what is the Jaccard community similarity index?

Community A contains two species of birds, each with 10 individuals. Community B contains one species with 18 individuals and four species with one individual. Community B is more diverse as measured by the Shannon Index.

A community has three species, one with 30 individuals, one with 70, and the last with 100. What is the value of the Gini-Simpson index?

When species proportional abundance in a community is plotted against species rank, the result is termed

The view that species in an area are usually associated in to one structured, functioning community is known as the organismic model.

Which diversity index is calculated using this equation: - Σ\SigmaΣ pilnpi

Information statistic indices are more influenced by rare species than are dominance indices.

An Introduction to Ecology

Population Genetics

Natural Selection, Speciation, and Extinction

Behavioral Ecology

Temperature

Water

Nutrients

Demographic Techniques and Population Patterns

Life Tables and Demography

Population Growth

Competition and Coexistence

Facilitation

Predation

Herbivory

Parasitism

Population Regulation

Species Richness Patterns

Species Richness and Community Services

Succession

Island Biogeography

Terrestrial Biomes

Marine Biomes

Freshwater Biomes

Food Webs and Energy Flow

Biomass Production

Biogeochemical Cycles

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There are five species in a community of 100 individuals. Species 1 has 40 individuals, and species 2-5 each have 15 individuals. What is H_max?

Which diversity index is calculated using this equation: - $\Sigma$ p_ilnp_i