From Conservation to Investment: Financing Mangroves as Natural Infrastructure

Najifa Alam Torsa
2 days ago
5 min read

Updated: 2 hours ago

International Development Finance and Impact Investment Expert, Alishba Khan, ACA, speaks to Nature Insights about valuing mangroves as natural capital, mobilizing climate and private finance, learning from successful global models and ensuring that investment strengthens both ecosystems and coastal communities.

Mangroves have traditionally been viewed as ecosystems requiring conservation. But Alishba Khan, ACA, an international expert in development finance, climate finance and impact investment, argues that this perspective captures only a fraction of their true value. In her conversation with Nature Insights, she describes mangroves as “productive natural infrastructure”, an asset that protect coastlines from erosion, cyclones and flooding while storing carbon, sustaining biodiversity, supporting fisheries and livelihoods, and reducing disaster and recovery costs. The restoration of mangroves in Pakistan’s Indus Delta illustrates this potential. Properly designed restoration can simultaneously strengthen coastal resilience, generate blue-carbon opportunities, support local livelihoods and contribute to national climate and biodiversity objectives.

According to Ms. Khan, the first step towards making mangroves investable is to measure the economic value of the ecosystem services they provide through natural-capital accounting, ecosystem valuation, disaster-risk modelling and cost-benefit analysis. Governments can incorporate these values into national planning, climate budgets and public investment appraisal, while financial institutions can recognize eligible restoration and conservation projects within green, blue and nature-positive financing frameworks. She gives a simple illustration: if a mangrove programme requires an initial investment of US$10 million but protects US$50 million worth of infrastructure and economic activity from future cyclones, while also supporting fisheries, livelihoods and carbon revenues, its economic return may be considerably higher than its conventional financial return suggests. “What gets measured gets financed” she says. Mangroves can therefore be assessed alongside engineered infrastructure such as sea walls, not simply as an environmental expenditure but as a form of natural infrastructure that may provide multiple benefits at a lower whole-life cost.

The international experience reinforces this argument. Mikoko Pamoja in Kenya, one of the world’s best known examples of community-led mangrove conservation financed through blue carbon credits demonstrates how community-led blue-carbon finance can generate revenues for mangrove conservation while supporting local development. Vanga Blue Forest, also in Kenya, illustrates how such approaches can be replicated and scaled. Delta Blue Carbon project of Pakistan, demonstrates the potential of taking blue-carbon conservation to landscape scale in the Indus Delta. Meanwhile, the Seychelles sovereign blue bond illustrates how capital-market instruments can mobilize finance for marine conservation, while Belize’s debt-for-nature approach demonstrates how sovereign financial transactions can create longer-term conservation funding. These experiences also offer cautionary lessons: financial innovation must be accompanied by environmental integrity, additionally, credible measurement and transparent reporting. For Ms. Khan, the objective is not to apply international models, but to adapt the strongest elements of each to Pakistan’s institutional, ecological and financial context.

Scaling mangrove restoration, however, requires moving beyond short-term grants and isolated projects. Ms. Khan argues that climate finance, carbon markets, biodiversity finance and private investment can provide a more durable financing architecture. Concessional and blended finance can absorb early-stage risks and crowd in private capital; blue or nature bonds can mobilize larger pools of investment; high-integrity blue-carbon credits can generate recurring revenues; Payments for Ecosystem Services can reward communities for protecting ecosystems; and resilience bonds and parametric insurance could potentially capture part of the economic value of reduced disaster risk. Private investment could also support sustainable fisheries, aquaculture, ecotourism and other nature-positive coastal enterprises.

Building a Financing Ecosystem

Ms. Khan emphasizes that no single financial instrument can finance mangroves at the scale required. What is needed is a financing ecosystem in which public finance is used strategically, not to fund restoration indefinitely, but to de-risk projects, establish credible institutions and mobilize private capital. The most promising projects should be developed into investment-ready pipelines, with each project matched to the appropriate combination of grants, concessional finance, carbon finance, insurance, biodiversity finance or commercial investment.

Yet making mangroves investable must not mean reducing nature to a financial commodity. Ms. Khan stresses that transparency, scientific integrity and community participation are fundamental. Projects require robust MRV systems for carbon, biodiversity and ecological outcomes, alongside safeguards for additionally, permanence and leakage. Where applicable, Indigenous and local rights must be protected through free, prior and informed consent, while transparent revenue-sharing mechanisms are essential to ensure that communities receive a fair share of the benefits. Otherwise, the growth of blue-carbon and biodiversity markets could create new forms of greenwashing rather than genuine environmental impact.

Policy reform is therefore equally important. Ms. Khan recommends that governments integrate mangroves explicitly into climate, biodiversity, development and disaster-risk strategies; strengthen legal protection and governance; introduce natural-capital accounting; develop standardized investment pipelines; and integrate natural infrastructure into public investment appraisal. She also sees significant potential in linking mangrove finance with the Biodiversity Finance Initiative and national biodiversity-finance planning, so that climate and biodiversity finance are treated as complementary rather than separate silos.

The sustainability and climate reporting landscapes are also creating new opportunities. IFRS S1 and IFRS S2 are bringing sustainability and climate-related risks into mainstream corporate reporting, while the ISSB is progressing work on biodiversity, ecosystems and ecosystem services. Ms. Khan cautions against describing the emerging nature standard as “IFRS S3” at this stage, but sees its direction as highly relevant to mangroves. For banks, insurers, ports, fisheries, tourism companies and other businesses dependent on coastal ecosystems, the degradation or restoration of mangroves can have material implications for physical risk, supply chains, insurance costs and long-term enterprise value. Nature-related disclosure can therefore help translate ecosystem degradation from an environmental concern into a financial-risk consideration.

The same logic applies to the Sustainable Development Goals. Mangroves contribute simultaneously to SDGs on poverty, food security, gender equality, decent work, resilient infrastructure, climate action, life below water and life on land. A well-designed mangrove investment can therefore generate multiple development outcomes from one natural asset.

For Pakistan, Ms. Khan proposes going further by establishing a Mangrove and Coastal Resilience Investment Platform that brings together government, development finance institutions, banks, insurers, investors, carbon-market participants, researchers and coastal communities. Such a platform could develop standardized Mangrove Investment Prospectuses, identifying the natural asset, quantifying its economic and ecological value, assessing the risks it reduces, defining the investment required and establishing transparent benefit-sharing arrangements.

Ultimately, Ms. Khan argues, success should no longer be measured simply by hectares planted. The indicators should include trees surviving, carbon stored, biodiversity restored, economic value protected, disaster losses avoided, livelihoods improved, community revenues generated and private capital mobilized. This represents a shift from measuring activities to measuring outcomes.

The larger message is that mangroves should not be viewed merely as ecosystems that require periodic conservation funding. They are assets that already perform infrastructure, climate, biodiversity and economic functions. If their value is properly measured and incorporated into budgets, investment decisions, insurance models, corporate reporting and capital markets, mangrove restoration can evolve from a recurring conservation cost into a long-term investment in resilience, livelihoods and sustainable development.

The opportunity, therefore, is not simply to finance mangroves. It is to finance the coastal resilience economy that healthy mangroves make possible.