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GCSE Geography · key term
Catching fish faster than their populations can replace themselves through reproduction.
Used by Edexcel and OCR
Specification 3.3 · Paper 1
Revise: UK EcosystemsOverfishing reduces fish stocks when catches exceed the rate at which populations can recover. North Sea cod are an example. The consequences extend beyond the species being caught: cod eat smaller fish, so reducing cod numbers can alter predator–prey relationships and disrupt the food chain.
Specification 8.1a · Paper 2, Paper 3
If catches exceed the rate at which fish populations reproduce, occurs. Fish stocks decline, and changes in their abundance disrupt the food webs that depend on them.
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