The collapse of ocean fisheries, what drives it, who it harms, and how we respond.
Adjust the annual harvest rate and run the simulation year by year. Watch what happens to the population — and when it can no longer recover.
Overfishing doesn't just reduce one species — it sends shockwaves through entire ecosystems and human communities.
Overfishing has driven some species to near-extinction levels. When a population drops below a critical threshold, it cannot recover — even if fishing stops. The Atlantic Cod fishery off Newfoundland collapsed in 1992 and has never fully recovered.
Removing large numbers of one species disrupts food webs. Prey populations can explode; predators lose food sources. This cascading effect lessens overall biodiversity in aquatic systems, destabilizing the entire ecosystem.
Over 3 billion people globally rely on seafood as a primary protein source. Fishing communities whose livelihoods depend on healthy stocks face economic collapse when fisheries fail. The effects are sharpest in developing nations.
Overfishing is not a new problem. These are landmark moments that shaped how we understand — and try to manage — our ocean resources.
The AP Exam expects you to describe potential solutions — including their trade-offs. Here are the key approaches used to address overfishing.
Evaluating solutions requires understanding that different stakeholders experience overfishing very differently.
Depend entirely on healthy fish stocks. Among the first harmed by collapse, yet often have little political power to influence industrial fishing policy.
Large economic interests in maintaining high catch levels. May resist quotas. Can also be motivated to support sustainability if long-term profits are threatened.
Have exclusive economic zones (EEZs) extending 200 nautical miles. Must balance economic development with conservation obligations under international law.
Advocate for science-based catch limits and MPAs. Research provides the data foundation for all management decisions.
Choices about which seafood to buy can either reward or punish sustainable practices. Eco-labeling programs try to make these choices easier.
Organizations like the FAO and UN must negotiate cooperation across sovereign nations — especially for migratory species that cross borders.
5 questions aligned to APES learning objectives for Topic 5.8.