FISHERIES MANAGEMENT-PERSPECTIVE No-take Reserve Networks: Sustaining Fishery Populations and Marine Ecosystems

Improved management approaches are needed to reduce the rate at which humans are depleting exploited marine populations and degrading marine ecosystems. Networks of no-take marine reserves are promising management tools because of their potential to (1) protect coastal ecosys-tem structure and functioning, (2) benefit exploited populations and fisheries, (3) improve scientif-ic understanding of marine ecosystems, and (4) provide enriched opportunities for non-extractive human activities. By protecting marine ecosystems and their populations, no-take reserve net-works can reduce risk by providing important insurance for fishery managers against overex-ploitation of individual populations. Replicated reserves also foster strong scientific testing of fish-ery and conservation management strategies. Reserve networks will require social acceptance, adequate enforcement, and effective scientific evaluation to be successful. Processes for reserve establishment should accommodate adaptive management so boundaries and regulations can be modified to enhance performance. However, even well-designed reserve networks will require continued conservation efforts outside reserve boundaries to be effective. Establishing networks of no-take reserves is a process-oriented, precautionary management strategy that protects functiona