G2: Fishing

Question 2

what is the problem in farming from ocean ecosystems

Answer 2

the bottom of the food chain is usually targeted, meaning the animals at the top also dont hav enough and die as a secondary result of overfishing, disturbing aquatic food chains

Question 3

what is commercial fishing?

Answer 3

the activity of catching fish/seafood for commercial profit, mostly from wildfisheries

Question 4

what are the problems of commercial fishing?

Answer 4

1) overfishing
2) By-catch
3) poison and explosives
4) bottom trawling

Question 5

what method of fishing can be described as ‘using large nets with metal weights which drag on the ocean floor, easily destroying delicate ecosystems, with by catch of around 90%’

Answer 5

bottom trawling

Question 6

what is the problem of overfishing?

Answer 6

more fish are caught that can be replenished, which can upset the balance of ecosystems (example, bluefin tuna are nearly extinct)

Question 7

why are poisons and explosives used, and why are they a problem?

Answer 7

they are used to stun the fish to make them easier to catch, but it can also poison ecosystems, killing habitats and other ocean creatures unnecasarily

Question 8

what is by-catch

Answer 8

big nets which catch more fish than are needed. they are usually wasted

Question 9

what are fish farms, include advantages and disadvantages

Answer 9

oceanic cages/indoor pools where fish are grown for farming as a solution to ocean fishing problems.
+reduces problems caused by ocean fishing
-fish sewage contains uneaten food, waste and disease and pathogens