Aquatic Resource Management Exam Review

The downsides of trawling includes all the following EXCEPT______________

• Destruction of habitat

• High bycatch

• Overharvesting of apex predators such as tuna and sharks

• Killing of protected species such as sea turtles

What environmental issue do dams present?

• Dams reduce the amount of water entering the ocean

• Dams prevent the movement of anadromous fish from reaching their spawning grounds

• Dams create lakes, which are not natural and prone to eutrophication

• Dams slow the movement of water, allowing silt to accumulate which destroys habitat

A fishery is defined as ________________

• An ecosystem where the number of fish is high enough to allow harvest

• The process of harvesting fish

• The fishing industry

• A group of fishermen

All of the following are the disadvantages of aquaculture EXCEPT_________________

• Having a large number of animals in a confined space creates the potential for disease epidemics

• Waste being produced by a large number of animals could potentially lead to eutrophication

• Animals escaping from aquaculture could potentially become invasive species

• Having a large number of animals in a confined space could attract predators.

Multi-Trophic Aquaculture allows a farmer to__________________

• Grow more stock in less space

• Grow more stock while spending less money on expenses

• Grow more stock while simulating a natural environment to improve water quality

• Grow more and different stock to increase profit

What are the problems with commercial fishing methods that are NOT labor-intensive?

• Fishermen cannot make much profit from them due to low yield.

• They produce high yield but with a lot of bycatch and sometimes environmental damage

• They produce high yield but tend to be expensive and time-consuming

• They tend to produce low yield but with a lot of bycatch and environmental damage

The undesired or unwanted organisms taken alongside commercial species is known as ____________________

• Sidecatch

• Rough fish

• Trash fish

• Bycatch

Name the commercial fishing method shown.

• Gillnet

• Purse Seine

• Trawl

• Longline

What are the advantages and disadvantages of this form of commercial fishing?

• It causes the least amount of environmental damage, but very labor-intensive

• There are no disadvantages. It is environmentally friendly and is not labor intensive

• It is the least labor-intensive, but causes a lot of environmental damage

• There are no advantages. It is both labor-intensive and causes a lot of environmental damage

Which animals are covered by the Marine Mammal Act of 1972?

• Fish, seabirds, sea turtles

• commercial and sport fish

• dolphins, whales, and manatees

• all mammals