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Question
Define “capture fisheries”.
Answer
Capture fisheries are the harvesting of wild fish and other aquatic organisms from oceans, lakes, and rivers.
💡 Hint
Wild catch.
Question
Capture fisheries: what are they in one phrase?
Answer
Catching wild fish (and other aquatic organisms).
💡 Hint
Wild harvest.
Question
What is bycatch?
Answer
Bycatch is non-target species caught accidentally during fishing, often discarded dead.
💡 Hint
Non-target catch.
Question
Give two major problems linked to capture fisheries.
Answer
Overfishing and bycatch are major problems (also habitat destruction and IUU fishing).
💡 Hint
Overfish + bycatch.
Question
Why has modern fishing technology increased overfishing risk?
Answer
Technologies like GPS, sonar, and large efficient nets increase catch efficiency, making it easier to remove fish faster than stocks can reproduce.
💡 Hint
Efficiency outpaces recovery.
Question
Why is bottom trawling often criticised?
Answer
It can destroy seafloor habitats and increase bycatch, damaging ecosystems.
💡 Hint
Habitat damage.
Question
How can overfishing affect societies?
Answer
It can reduce food security and income for fishing communities, causing economic losses and job impacts.
💡 Hint
People rely on fish.
Question
Give two ecological impacts of overfishing.
Answer
Overfishing can cause stock collapse and disrupt food webs, including trophic cascades when key species (especially predators) are removed.
💡 Hint
Collapse + food webs.
Question
What does IUU fishing stand for and why is it harmful?
Answer
Illegal, unreported, and unregulated fishing avoids quotas and monitoring, increasing overfishing and undermining management.
💡 Hint
Evades rules.
Question
What is the key idea that links capture fisheries to natural capital?
Answer
Fish stocks are renewable natural capital, but unsustainable harvesting can degrade or collapse the resource.
💡 Hint
Renewable but vulnerable.
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Full study notes for Capture fisheries
Topic 4.3 hub
Aquatic food production systems
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