Question 1

Factors that contribute to the collapse of global fisheries include ________.

Accepted Answer

A)  increased human demand for fish 
B)  powerful ships with extended ranges 
C)  flash freezing techniques 
D)  fishing practices like bottom-trawling 
E)  All of these answers contribute to the global collapse of fisheries. 
A)  increased human demand for fish 
B)  powerful ships with extended ranges 
C)  flash freezing techniques 
D)  fishing practices like bottom-trawling 
E)  All of these answers contribute to the global collapse of fisheries. E

Question 2

Which of the following is an obstacle that recirculating aquaculture systems (RAS) will need to overcome if they are to become more widespread?

Accepted Answer

A)  efficiency 
B)  expensive start-up costs 
C)  productivity 
D)  sustainability 
E)  all of these answers 
A)  efficiency 
B)  expensive start-up costs 
C)  productivity 
D)  sustainability 
E)  all of these answers B

Question 3

The Marine Trophic Index has decreased dramatically since 1990. What does this statement mean?

Accepted Answer

A)  Invasive species are taking over the oceans. 
B)  Higher-level predators are declining in numbers. 
C)  Whale numbers have made a dramatic increase. 
D)  A, B, and C are true. 
E)  None of these answers are true. 
A)  Invasive species are taking over the oceans. 
B)  Higher-level predators are declining in numbers. 
C)  Whale numbers have made a dramatic increase. 
D)  A, B, and C are true. 
E)  None of these answers are true. B

Question 4

Which statement about aquaculture is TRUE?

Accepted Answer

A)  Despite technological advances, fish farms still lag behind traditional fisheries in production. 
B)  Most fish species are able to reproduce in captivity, which made adoption of these species to aquaculture that much easier. 
C)  Aquaculture was only recently developed and practiced. 
D)  In 2009, aquaculture provided more than half of all seafood consumed worldwide. 
E)  The United States has the highest levels of seafood produced by aquaculture in the world. 
A)  Despite technological advances, fish farms still lag behind traditional fisheries in production. 
B)  Most fish species are able to reproduce in captivity, which made adoption of these species to aquaculture that much easier. 
C)  Aquaculture was only recently developed and practiced. 
D)  In 2009, aquaculture provided more than half of all seafood consumed worldwide. 
E)  The United States has the highest levels of seafood produced by aquaculture in the world.

Question 5

Table 31.1.
 
-Refer to Table 31.1. Even though aquaculture may help balance fisheries collapse, there are several problems associated with net pen and pond aquaculture. Select three problems, and describe a possible solution for each.

Accepted Answer

These types of aquaculture cause fish to

Question 6

One of the major problems of managing marine fisheries is the amount of illegal, unreported, and unregulated fishing. It is estimated that the revenue from these practices is _______ dollars annually.

Accepted Answer

A)  1 to 5 million 
B)  50 to 100 million 
C)  1 to 5 billion 
D)  4 to 9 billion 
E)  20 to 30 billion 
A)  1 to 5 million 
B)  50 to 100 million 
C)  1 to 5 billion 
D)  4 to 9 billion 
E)  20 to 30 billion

Question 7

More than half of the world's fisheries are at ___________, the amount of fish that can be harvested without decreasing the yield in future years.

Accepted Answer

A)  overexploitation yield 
B)  maximum sustainable yield 
C)  depletion yield 
D)  bycatch yield 
E)  fishery maximum yield 
A)  overexploitation yield 
B)  maximum sustainable yield 
C)  depletion yield 
D)  bycatch yield 
E)  fishery maximum yield

Question 8

Infographic 31.1. 
 
-Refer to the graph in Infographic 31.1. Adult cod are quite large and live close to the sea floor. They eat a wide variety of fish, as well as mussels, squid, and crab. Their diet and early life-cycle stages depend on a seabed with a complex structure. Spawning schools of more than a hundred million fish have been observed, and the average female can spawn millions of eggs. How is it possible that in 1992 the Canadian government had to close the cod fishery?

Accepted Answer

Fishing practices devastated the populat

Question 9

What is the tragedy of the commons? How do fishing technology and the tragedy of the commons intersect to jeopardize global fisheries?

Accepted Answer

The tragedy of the commons is the quanda

Question 10

What is likely to be the MOST important global impact of bycatch?

Accepted Answer

A)  loss of ocean biodiversity 
B)  acidification and coral bleaching 
C)  sediment pollution 
D)  habitat destruction 
E)  increase in invasive species 
A)  loss of ocean biodiversity 
B)  acidification and coral bleaching 
C)  sediment pollution 
D)  habitat destruction 
E)  increase in invasive species

Question 11

What role do fish play in human diets? What drives consumption of fish in poorer and wealthier countries?

Accepted Answer

Humans consume more seafood each year th

Question 12

-Refer to Infographic 31.4. The figure shows fish catches in the Newfoundland-Labrador Shelf area of the North Atlantic. Describe the shift in the species and amounts taken in 1968, 1990, and 2005.

Accepted Answer

In 1968 the combined catch of all groups

Question 13

Compare and contrast fishing and open-water aquaculture. Discuss the benefits and challenges of both approaches in obtaining fish protein for our diets.

Accepted Answer

Fishing is like hunting while aquacultur

Question 14

Fisheries management is based on many decades of reproducible science.

Accepted Answer

A) True 
 B)False

Question 15

Explain the difference between a marine-protected area and a marine reserve.

Accepted Answer

A marine-protected area is a discrete re

Question 16

Which statement about fish is FALSE?

Accepted Answer

A)  In poorer nations, the cost of fish is cheaper compared with meat and poultry. 
B)  More than 15% of the world's population relies on fish as their main source of protein. 
C)  Even though fish is a popular protein choice, humans consume more beef, pork, and chicken than fish. 
D)  Many trendy diets are based on fish consumption. 
E)  The FDA recommends that Americans consume two servings of fish per week. 
A)  In poorer nations, the cost of fish is cheaper compared with meat and poultry. 
B)  More than 15% of the world's population relies on fish as their main source of protein. 
C)  Even though fish is a popular protein choice, humans consume more beef, pork, and chicken than fish. 
D)  Many trendy diets are based on fish consumption. 
E)  The FDA recommends that Americans consume two servings of fish per week.

Question 17

The difference between a marine-protected area and a marine reserve is:

Accepted Answer

A)  marine reserves are only found outside of the exclusive economic zone. 
B)  cultural artifacts are only protected by marine reserves. 
C)  no fishing is allowed in a marine reserve. 
D)  a marine-protected area maintains a higher level of ecosystem biodiversity. 
E)  None of these answers-the terms are interchangeable. 
A)  marine reserves are only found outside of the exclusive economic zone. 
B)  cultural artifacts are only protected by marine reserves. 
C)  no fishing is allowed in a marine reserve. 
D)  a marine-protected area maintains a higher level of ecosystem biodiversity. 
E)  None of these answers-the terms are interchangeable.

Question 18

What percent of global marine fisheries are overfished?

Accepted Answer

A)  10.2% 
B)  24.6% 
C)  28.8% 
D)  42.5% 
E)  50.9% 
A)  10.2% 
B)  24.6% 
C)  28.8% 
D)  42.5% 
E)  50.9%

Question 19

One of the major problems with the aquaculture of fish is convincing the public that farm-raised fish taste as good as wild caught.

Accepted Answer

A) True 
 B)False

Question 20

Aquaculture _____________.

Accepted Answer

A)  is fishing without the use of trawl nets and thus without bycatch 
B)  refers to the marine resources, including fish, that are found within 200 nautical miles from the coastline of any given nation, where that nation has exclusive rights 
C)  refers to finding a use for nontarget species that become trapped in fishing nets and are usually discarded 
D)  is farming fish by rearing fish in tanks, ponds, or ocean net pens 
E)  refers to a fishery that ensures that fish stocks are maintained at healthy levels, the ecosystem is fully functional, and fishing activity does not threaten biological diversity 
A)  is fishing without the use of trawl nets and thus without bycatch 
B)  refers to the marine resources, including fish, that are found within 200 nautical miles from the coastline of any given nation, where that nation has exclusive rights 
C)  refers to finding a use for nontarget species that become trapped in fishing nets and are usually discarded 
D)  is farming fish by rearing fish in tanks, ponds, or ocean net pens 
E)  refers to a fishery that ensures that fish stocks are maintained at healthy levels, the ecosystem is fully functional, and fishing activity does not threaten biological diversity

Exam 31: Technologies-But They Come With a Slew of Problems- Soil and Grassland Resources

Factors that contribute to the collapse of global fisheries include ________.

Which of the following is an obstacle that recirculating aquaculture systems (RAS) will need to overcome if they are to become more widespread?

The Marine Trophic Index has decreased dramatically since 1990. What does this statement mean?

Which statement about aquaculture is TRUE?

Table 31.1. -Refer to Table 31.1. Even though aquaculture may help balance fisheries collapse, there are several problems associated with net pen and pond aquaculture. Select three problems, and describe a possible solution for each.

One of the major problems of managing marine fisheries is the amount of illegal, unreported, and unregulated fishing. It is estimated that the revenue from these practices is _______ dollars annually.

More than half of the world's fisheries are at ___________, the amount of fish that can be harvested without decreasing the yield in future years.

What is the tragedy of the commons? How do fishing technology and the tragedy of the commons intersect to jeopardize global fisheries?

What is likely to be the MOST important global impact of bycatch?

What role do fish play in human diets? What drives consumption of fish in poorer and wealthier countries?

-Refer to Infographic 31.4. The figure shows fish catches in the Newfoundland-Labrador Shelf area of the North Atlantic. Describe the shift in the species and amounts taken in 1968, 1990, and 2005.

Compare and contrast fishing and open-water aquaculture. Discuss the benefits and challenges of both approaches in obtaining fish protein for our diets.

Fisheries management is based on many decades of reproducible science.

Explain the difference between a marine-protected area and a marine reserve.

Which statement about fish is FALSE?

The difference between a marine-protected area and a marine reserve is:

What percent of global marine fisheries are overfished?

One of the major problems with the aquaculture of fish is convincing the public that farm-raised fish taste as good as wild caught.

Aquaculture _____________.

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Oil and Natural Gas- the Bakken Oil Boom: Is Our Next Big Fuel Source Our Dirtiest- Air Pollution: Consequences of Using Fossil Fuels

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