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Conservation Biology: Foundations, Concepts, Applications
Fred Van Dyke
The Conservation of Aquatic Systems

Practice Quizzing



1

In aquatic environments, habitat heterogeneity is created primarily by:
A)underwater topography
B)depth
C)vegetation structure
D)physical structures
2

What do kelp and tube-building marine organisms have in common?
A)They form cells of water called gyres.
B)They are photoluminescent.
C)They do not interact with other species.
D)Their activities alter marine habitats in ways that affect many other species.
3

Riffles and pools are associated with:
A)lotic ecosystems
B)lentic ecosystems
C)marine ecosystems
D)global circulation patterns
4

Which of the following is NOT a mechanism by which wind affects lakes?
A)determining seasonal changes in water temperature
B)establishing Langmuir rotations
C)establishing seiches
D)transporting matter and energy through the water column
5

What is eutrophication?
A)decrease in lake pH due to acidic precipitation
B)seasonal cycling of water temperature in lakes
C)buildup of nutrients in rivers and lakes, resulting in low oxygen levels and damage to the biological community
D)buildup of heavy metals in rivers and lakes
6

Which of the following is NOT a common trait of nonnative aquatic species?
A)dispersal primarily through human activity
B)propagation primarily by sexual reproduction
C)potential for extremely high reproductive rates
D)All of the above are traits of nonnative aquatic species.
7

The zebra mussel (Dreissena polymorpha) is:
A)an endangered species in the United States
B)the cause of massive economic and environmental damage in U.S. rivers and streams
C)an inefficient filter feeder on zooplankton
D)not equipped to compete with other mussels for space and resources
8

The carp and Nile perch were both:
A)accidentally released in ships' ballast water
B)driven extinct by zebra mussels
C)ecologically beneficial when introduced to new habitats
D)intentionally introduced outside their native ranges
9

Dredging, chemical manipulation, and biomanipulation are methods for:
A)removing phosphorus and other nutrients from freshwater habitats
B)reducing erosion on agricultural lands
C)managing nonnative species in freshwater habitats
D)managing acidification in freshwater habitats
10

Where would you find riparian vegetation?
A)in the interior of a forest
B)on the bottom sediment of a lake
C)adjacent to a body of water
D)on rocks in a stream
11

Indices of biotic integrity are useful for:
A)measuring a sampled stream against a heavily degraded stream
B)making measurements of specific chemical elements and compounds
C)incorporating professional ecological judgment in evaluating a stream's condition
D)maintaining a focus on pollution compliance
12

All of the following are characteristics of coral reefs EXCEPT:
A)Coral reefs are centers of marine biodiversity.
B)Coral reefs have a surface layer of nonliving matter.
C)Coral reefs serve as substrates for many species.
D)Coral reefs exist in well-lit waters.
13

What is the status of most commercial fisheries?
A)Most have collapsed because of overfishing.
B)Most are thriving, economically and ecologically.
C)Most have begun to follow the example of the cod fishery in Newfoundland, which recovered in the 1990s.
D)Most were rescued by the extension of territorial limits to 200 nautical miles.
14

What nation has nearly one-fourth of the world's remaining wetlands?
A)United States
B)Brazil
C)China
D)Canada
15

______ are areas "where the water table is at or near the surface, or the land is covered by shallow water."
A)Hydrothermal vents
B)Wetlands
C)Marine reserves
D)Benthic habitats
16

List three ways that wetlands benefit humans.
17

Name two nonindigenous species discussed in this chapter.
18

Name two ecological services provided by riparian zones.








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