Fisheries & oceans
Principles for recognizing and formalizing customary marine tenure systems to strengthen local fisheries governance.
An evergreen exploration of how customary marine tenure can be acknowledged, codified, and harmonized with modern governance to secure resilient fisheries, equitable access, and sustainable livelihoods for coastal communities worldwide.
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Published by Anthony Gray
August 04, 2025 - 3 min Read
In many coastal regions, traditional knowledge and community norms shape who can fish where, when, and how, forming a rich tapestry of customary marine tenure (CMT). Recognizing these systems requires careful, respectful engagement with local leaders, fishers, women, youth, and marginalized groups who rely on shared marine resources for daily subsistence and long-term security. Policymakers should document existing practices without erasing them, mapping rights, obligations, and conflict-resolution mechanisms that communities themselves have developed over generations. By situating CMT within a rights-based framework, authorities can avoid duplicating formal property regimes and instead honor customary authority while clarifying state interests in sustainable management, transparency, and accountability.
A practical pathway to formalizing CMT begins with participatory governance that elevates local voices. Community mapping sessions, facilitated dialogue, and inclusive decision-making platforms help translate unwritten norms into recognized legal constructs. Legal pluralism—where customary norms coexist with national laws—offers a flexible approach that respects tradition while enabling accountability. Transparent benefit-sharing arrangements, clear criteria for access, and mechanisms for monitoring compliance reduce conflict and foster trust among fishers, traders, and regulators. Importantly, capacity-building investments—training in basic rights, data collection, and conflict mediation—empower communities to engage with authorities as equal partners rather than passive subjects.
Documentation and accountability must reflect lived realities.
Establishing legitimacy for CMT hinges on robust social learning, where communities reflect on evolving ecological realities and adjust norms accordingly. This adaptive governance mindset acknowledges climate variability, shifting stock distributions, and changing market demands. When communities participate in assessing resource abundance, harvest demands, and alternative livelihoods, they develop shared visions that align cultural practices with conservation goals. Legitimacy grows not from imposition but from demonstrated fairness, inclusivity, and demonstrable benefits for members and non-members alike. Courts, councils, and local assemblies can incorporate these norms into formal instruments, ensuring enforcement that respects customary authority while upholding human rights and ecological integrity.
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Beyond legitimacy, formal recognition requires precise delineation of entitlements and responsibilities. Rights to access, use, and exclude must be paired with obligations to protect spawning grounds, reduce bycatch, and maintain ecosystem services. Clear tenure boundaries prevent over-extraction and encroachment by external actors such as large commercial fleets or illegal harvesters. Documentation should be accessible, multilingual, and technologically appropriate, using community-developed maps, oral histories, and participatory surveys. Importantly, enforcement mechanisms must be culturally appropriate and just, offering conflict resolution pathways that are perceived as legitimate by fishers, elders, and youth alike, rather than punitive, top-down impositions.
Co-management builds resilience through shared responsibility.
A crucial step in formalizing CMT is the creation of co-management arrangements where state agencies share decision-making power with communities. Co-management reframes governance as a partnership, with defined roles, financing, and performance metrics. When communities have genuine veto rights or control over access windows, they assume stewardship responsibilities more deeply, maintaining ecological balance and social equity. Co-management also enables adaptive responses to environmental shocks, because locals often recognize early change cues and traditional practices can be blended with scientific insights to sustain stocks and livelihoods. Transparent funding mechanisms ensure that resources reach communities for surveillance, enforcement, and capacity strengthening.
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Financing is not merely support for enforcement; it is an investment in resilience. Sustainable livelihoods programs tied to CMT empower fishers to diversify income through value-added processing, ecotourism, or sustainable aquaculture in buffer zones. By linking tenure formalization to livelihood opportunities, authorities create direct incentives for adherence to rules and for ecological stewardship. Community-managed funds can be established to support gear maintenance, data collection, and compliance monitoring, with independent audits to sustain trust. Integrating gender equity ensures that women’s knowledge and participation inform decisions, from access rights to market linkages, reinforcing social cohesion and ensuring that benefits reach the most vulnerable households.
Data stewardship and inclusive participation reinforce trust.
Recognizing customary tenure also involves safeguarding ancestral entitlements and cultural rights. Many communities rely on ritual calendars, taboos, and customary sanctions that regulate harvest intensity and protect spawning habitats. Formal recognition should respect these practices and, when appropriate, codify them as part of the legal framework. Yet it must also accommodate change, allowing rites and norms to evolve with ecological and economic pressures. A rights-based approach emphasizes non-discrimination, ensuring that marginalized groups—such as women, youth, and minority communities—gain meaningful access and can participate in governance processes without fear of marginalization or punishment for traditional roles.
Equally important is the development of transparent data systems that document catches, effort, and ecological indicators at a local scale. Community-led monitoring programs provide timely information about stock status, habitat condition, and compliance with tenure rules. Data sovereignty—where communities own and control their information—reduces paternalism and strengthens accountability. When data are shared with national authorities, they should be used to inform policy without eroding local authority. Reliable data enhance credibility, support adaptive management, and foster evidence-based negotiations with other resource users, including outside commercial interests seeking access to coastal zones.
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Education, outreach, and feedback sustain adaptive governance.
A thoughtful recognition framework must anticipate potential conflicts and provide accessible dispute-resolution avenues. Local tribunals, elder councils, or youth assemblies can offer culturally resonant avenues for mediation, while formal courts handle more complex cases. The key is to link these pathways so that outcomes are harmonious, enforceable, and widely accepted. Transparent processes—notice, timelines, and appeal options—reduce suspicion and prevent escalation. When communities see that rules are applied consistently, and that outsiders are subjected to the same standards, social license to operate emerges, enabling legitimate collaborations with fisheries, tourism operators, and conservation groups to flourish.
Education and outreach are foundational pillars of durable governance. Early engagement of communities in legislative drafting, trial periods, and impact assessments cultivates ownership and reduces resistance later. Curriculum materials should integrate local knowledge, ecological science, and rights-based training, ensuring that all participants understand both their entitlements and responsibilities. Outreach must reach different demographics—women, youth, fishers with small-scale gear, and non-fishing residents—so that the governance system reflects diverse perspectives. Continuous learning loops, feedback forums, and periodic reviews prevent stagnation and keep tenure arrangements responsive to changing conditions.
As a practical instrument, model-byelaw processes can translate broad principles into concrete rules tailored to each locale. These byelaws, developed through broad consultation, specify seasonal closures, gear types, protected habitats, and access windows within customary zones. They should be accompanied by monitoring plans and a clear mechanism for amendment when ecological or social conditions shift. Importantly, communities should retain veto power over rules that directly affect their livelihoods, while the state retains authority over issues with broader public interest. This balance maintains local legitimacy while ensuring alignment with national conservation objectives and international norms on sustainable resource use.
Ultimately, the universal aim is to strengthen governance systems that are fair, adaptive, and sustainable. Recognizing customary tenure is not about replacing indigenous norms with bureaucratic rigidity; it is about harmonizing traditional authority with transparent state oversight to prevent overfishing, ensure equitable access, and support resilient livelihoods. When communities govern with clarity, inclusion, and accountability, resource users-turned-stakeholders collaborate more effectively. The result is a fisheries system that respects culture, protects ecosystems, and delivers long-term benefits to current and future generations, anchored in shared stewardship and legitimate governance frameworks.
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