The Importance of Fisheries Replenishment Areas in Hawaiʻi
Hawaiʻi’s reef fisheries have declined due to overfishing, habitat loss, and the loss of traditional management practices. The report shows that Fisheries Replenishment Areas (FRAs) help fish populations recover by protecting breeding adults, increasing biomass, and supporting nearby fisheries through spillover. A connected network of well protected FRAs is recommended.
Subject Tags
- Fisheries
- Ecosystem management
- Community-based conservation
Summary
This guide explains how Hawaiʻi’s nearshore fisheries have experienced major declines over the past century due to overfishing, habitat degradation, coastal development, pollution, and the breakdown of traditional Hawaiian resource management systems. The report highlights how Native Hawaiian stewardship practices once sustained marine resources through seasonal protections, local governance, and ecosystem-based management. It presents scientific evidence that Fisheries Replenishment Areas (FRAs), where fishing is highly restricted or prohibited, allow fish to grow larger, reproduce more successfully, and rebuild depleted populations. Protected areas in Hawaiʻi consistently show higher fish biomass and healthier ecosystems than nearby fished areas. Benefits extend beyond reserve boundaries through spillover of adult fish and dispersal of larvae, which help replenish surrounding fishing grounds. The report concludes that a well-designed network of fully and highly protected FRAs, supported by community stewardship and effective enforcement, is one of the most effective tools for restoring Hawaiʻi’s fisheries, food security, cultural practices, and reef resilience in a changing climate.
Suggested citation
Friedlander, A.M., Birkeland, C., Hixon, M., Conklin, E.,Green, A., Starmer, J. 2026. The Importance of Fisheries
TNC Authors
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Eric Conklin
Director of Marine Science. Hawaii
The Nature Conservancy
Email: econklin@tnc.org