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Blue Economy and Climate Change in Nigeria: Unlocking the Role of Coastal Ecosystems in Carbon Sequestration and Livelihoods

Oluchi Ulunma Nwosu

Abstract

Coastal vegetated ecosystems particularly mangroves, seagrasses, and intertidal wetlands are widely recognized as “blue carbon” systems due to their ability to sequester and store large volumes of carbon in biomass and sediments while providing vital ecosystem services that support coastal livelihoods and resilience. Along Nigeria’s coastline, including the Niger Delta, Lagos lagoon complexes, and several estuaries, mangrove forests and recorded seagrass habitats play key roles in carbon storage and socio-economic sustenance. However, these ecosystems are under severe threat from coastal development, oil and gas exploration, pollution, dredging, aquaculture expansion, and climate-related pressures such as sea-level rise and intensifying storms. This paper reviews the carbon sequestration potential of Nigeria’s coastal ecosystems, documents observed trends and drivers of degradation, assesses links between ecosystem change, livelihoods, and food security, and explores governance options for integrating blue carbon into Nigeria’s blue economy and climate policy. Evidence from regional and global syntheses, Nigeria specific studies, and policy frameworks shows that conserving and restoring coastal ecosystems can deliver climate mitigation, shoreline protection, fisheries enhancement, and livelihood benefits if grounded in participatory governance and safeguards. Yet, significant data gaps persist, particularly in seagrass mapping, sediment carbon stocks, standardized MRV (measurement, reporting, verification), and tenure clarity. We recommend a national agenda emphasizing: (i) blue carbon inventories and validation, (ii) inclusion in NDCs and LT-LEDS, (iii) community-led restoration with FPIC, (iv) blended finance and MRV capacity building, and (v) legal safeguards for equity. Advancing these steps would align Nigeria’s blue economy with climate and wellbeing goals.

Keywords

blue carbon blue economy mangroves seagrasses carbon sequestration coastal

References

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