Inter-American Institute for Cooperation on Agriculture

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2024 Partner Story: Bundling Nature-Based Solutions to Strengthen Caribbean Climate Resilience

In 2020, the Inter-American Institute for Cooperation on Agriculture (IICA), through funding from the Caribbean Biodiversity Fund (CBF), implemented a project for community-based climate adaptation and poverty alleviation through biodiversity conservation and ecosystems management across four vulnerable islands: Antigua & Barbuda, Dominica, St. Lucia and Tobago.i The project, entitled “Strengthening coastal and marine climate resilience though upland and coastal ecosystem-based adaptation (EbA) and community engagement” leveraged nature-based solutions, using ecosystem conservation, sustainable management and restoration to benefit biodiversity and local economies.   

A key project focus is the use of vetiver grass production in a systems approach to achieve multiple natural and community benefits including a green engineering system. With roots that can reach 10 feet deep, vetiver grass stabilizes soils for erosion control, groundwater retention, and removal of soil and water pollutants, as well as natural crop protection. Best practices using vetiver can prevent landslides, topsoil loss, drought, and sedimentation of waterways.  Vetiver grass is also a ‘C4’ plant which absorbs an extra atom of carbon from the air compared with ‘C3’  plants, providing added carbon sequestration value.  Vetiver leaves and oils also provide unique material for handicrafts, skincare products and soaps.  

The project began by replicating a vetiver system technology package from the IAMovement in Trinidad and Tobago and building on the familiarity and traditional knowledge of vetiver among community beneficiaries and collaborators. Involvement in project activities – training, field work, business development, and peer-to-peer sharing of experiences – led to new knowledge and was curated to create handbooks containing practical and simple guidelines for: (1) Re-engineering vetiver for geoengineering in different landscapes, (2) Growing green business from vetiver, (3) Farmer climate readiness and (4) Community-led climate resilience actions. 

The project provided field-based evidence that vetiver grass is an appropriate nature-based or geoengineering solution for soil erosion and stimulus for livelihoods in rural communities.  

IICA and its partners provided a bundled support package of training, networking, tools and other tangibles to community stakeholders in these four islands. This included establishing nurseries, vetiver crafting and green business development, and application of technology such as GIS and drone imagery, through the University of Florida. Progress in landscape restoration was measured and tracked.  IICA also facilitated the strong involvement of communities in every phase of the project to lead to successful outcomes.  

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