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Scenario 3. Fishing

This decision tree is a sample scenario that can guide the selection and interpretation of indicators in situations where

managers are concerned with overfishing. The most significant issue with fishing is the propensity to harvest at a level

beyond which the natural population can replenish itself. Fishing pressure can be mitigated by regulatory controls on

harvest volume, animal size, closed seasons and fishing gear.

This sample decision tree therefore focuses on these three areas to monitor:

· Status of commercial species and critical habitats (e.g., fish abundance, extent of mangroves)

· Level of fishing activity (e.g., volume of production)

· Effectiveness of interventions (e.g., certified fisheries, MPA effectiveness)

Figure 9.c

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