Environmental impact of fishing

  • Created by: Zoe
  • Created on: 21-04-13 15:15

Environmental impact of fishing

  • By-catch: dolphins caught by pair trawling; whales, dolphins, turtles, sharks caught in drift nets
  • Ghost fishing: fish lobsters etc. caught by discarded or lost fishing gear
  • Seabed damage: coral reefs damaged by nets
  • Food chain effects: some species more common if their predators are over-exploited, reduced food supply for predators, increased food supply for competitors.
  • Effects of fishing on fish stocks: overfishing caused by exceeding the MSY changed the biomass and age structure of the population e.g. cod, herring, tuna.
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