Fishery and Ocean Productivity Quiz

What changed about the amount of fish harvested from the oceans in the 1980s?

• The amount increased significantly

• The amount decreased significantly

• There was no significant change

• The types of fish harvested changed

What is a fishery?

• A place where fish are processed

• A place designated for commercial fishing

• A system for conserving marine life

• A marine habitat for fish breeding

What ecological factors limit fishery productivity?

• Water temperature and salinity

• Availability of sunlight and nutrients

• Migration patterns of fish

• All of the above

Which areas of the ocean tend to be the most highly productive?

• Open ocean and deep sea

• Areas near river mouths and upwellings

• Coral reefs and estuaries

• Polar regions and mid-ocean ridges

What is bycatch?

• The intentional catch of non-target fish species

• The use of specific nets to catch certain types of fish

• The unintentional catch of non-target species

• A method of fishing that increases productivity

What methods tend to have the highest rates of bycatch?

• Trawling

• Line fishing

• Use of fish aggregating devices

• Spearfishing

What made the Grand Banks fishery so productive?

• The warm waters of the Gulf Stream

• The presence of a large continental shelf

• The use of advanced fishing technologies

• Strict fishing regulations

What is the trophic level of the cod harvested at Grand Banks?

• Primary producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

What allowed yields from the Grand Banks fishery to increase over time?

• Overfishing by international fleets

• Implementation of sustainable fishing practices

• Technological advancements in fishing

• Natural increase in cod populations

When did the Grand Banks fishery collapse?

• Early 1900s

• Mid-1950s

• Early 1990s

• Late 2000s