Two neighboring countries share a migratory fish stock in international waters. Each country knows that if it limits its catch unilaterally, the other country can increase its catch and capture more short-term profit. Both countries therefore keep catches high, and the stock declines. Which policy approach most directly targets the incentive structure described?
- Negotiate and enforce an international quota agreement with monitoring and penalties (correct answer)
- Increase each country's fishing fleet size to improve competitiveness
- Remove all trade between the countries to reduce diplomatic contact
- Set a minimum price for fish so consumers buy less seafood
Explanation: This international fishery exemplifies the tragedy of the commons at a transboundary scale, where the lack of property rights and enforcement mechanisms leads to overexploitation. Each country faces a prisoner's dilemma - unilateral conservation efforts benefit the other country, creating incentives to maximize short-term catches regardless of sustainability. The migratory fish stock is a shared common-pool resource that neither country can exclude the other from accessing. The most effective solution is negotiating and enforcing an international quota agreement with monitoring and penalties, which creates binding constraints on each country's harvest. This transforms the incentive structure by making overfishing costly through penalties and establishing mutual accountability. Successful examples include regional fisheries management organizations that coordinate quotas, monitor compliance, and impose sanctions for violations.