Overfishing Flashcards
What are trawlers
Big fishing boats used to catch fish
How far do trawler nets go
Till the sea bed
Why has global fish catches fallen by 13 percent
Due to the use of trawlers, solar radar technology that spot fish, and deeper fishing
What is the problem with using large trawler nets to fish
They scoop up Everything in their path and leave nothing behind. They catch includes non targeted fish or endangered species such as albatrosses, sharks, turtles and jellyfish that are accidentally caught as bycatch.
What should happen to achieve sustainable fishing
- Government needs to introduce legislation to regulate the amount, types and age of fish that can be caught
- stricter punishments
- greater degree of monitoring
- a minimum net mesh size
- banning of destructive fishing methods such as bottom trawling
What is overfishing
The depletion of large fish stocks in a limited amount of time
What are the causes of overfishing
- increase in global population
- modern fishing boats
- modern fishing technology
- lack of international laws to protect fish populations
- poor countries selling their fishing rights to industrial countries
What are the types of fishing methods
Bottom trawling, purse seine and pot and trap
What is the bottom trawling method of fishing
It is a fishing method that involves dragging heavy weighted nets across the sea floor, in a effort to catch fish in large quantities.
Okay hat is the purse sein fishing method
A fishing method where fisherman go to the ocean and release a raft which attract fish and they also release a net which catches the fish
What is the pot and trap fishing method
Traps and pots are submerged three dimensional wire or wood devices that permit organisms to enter the enclosure but make it extremely difficult or impossible to escape. Bait is commonly secured in the trap to lure organisms inside.
How has the development and improvement of modern technology contributed to over fishing
Fishing vessels have freezes to store fishes as they are being caught, which allows for fisherman to fish for longer periods without the fish going bad, which means more fish are being caught which leads to overfishing. Sonar and GPS make it easier to find fish which allows fisherman to locate large amount of fish which leads to overfishing. Large fishing vessels allow more fish to be stored on them which means more fish can be cold which could lead to overfishing.
Draw of flow diagram in the space below that shows the report effect of over fishing on the economy of the Western Cape, South Africa.
Overfishing-> decrease in fish-> decrease in labour in fishing industry -> unemployment and job losses-> decline in economy of Western Cape.
What are other solutions of a fishing that you can think of
Restrict harsh methods of overfishing, address food wastage of fish, implement the sassi list, restrict fishing areas, restrict fishing quotas on fisherman, fishing season so that fish can have time to replenish, marine protected areas, international fishing laws.
