Tahiry Honko is the world’s largest community-led mangrove carbon conservation project. The project is helping to tackle climate breakdown and build community resilience by preserving and restoring mangrove forests in southwest Madagascar.


Benefits that Tahiry Honko provides



Start date 2018
Coordinator Blue Ventures Conservation on behalf of the Association Velondriake
Activities Afforestation/Reforestation
Avoided deforestation
Participants 895 smallholder families
PVCs issued to-date 0



The detail

Tahiry Honko” means ‘preserving mangroves’ in the local Vezo dialect. The project site is located in southwest Madagascar at Bay of Assassins within the Locally Managed Marine Area Velondriake, and promotes locally led conservation, reforestation and sustainable use of over 1,200 hectares of mangroves, alongside initiatives for building alternative livelihoods, including sea cucumber and seaweed farming and mangrove beekeeping.

Tahiry Honko is the first carbon sequestration project in Madagascar focused on a mangrove ecosystem. The project aims to provide a long-term source income for the residents of the Bay of Assassins through the sale of Plan Vivo certificates generated by avoiding emissions of over 1,300 tonnes of carbon dioxide per year. The sale of carbon credits will establish a secure revenue flow offering communities the opportunity, where feasible, to support education, dig wells, provide community health services and other related services that will directly benefit community members of all ages which are expected to make an important contribution to poverty alleviation and biodiversity conservation in the area.

The project has developed through a participatory approach to ensure that all people are engaged and empowered in decision making, including more marginalized groups such as women and young people.


The documents




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SDG details

See how the project provides benefits beyond carbon and contributes to the UN Sustainable Development Goals:

Sustainable Development Goal How the project contributes
  • Promotion of additional source of income (mangrove beekeeping, seaweed and sea cucumber farming) beyond fishing activities
  • Carbon revenue are used to subsidize school fees for all of the school children at the primary school at the project villages and to construct schools
  • The project promoted the participation of women and youth who possess limited decision-making power compared with men (80% of the carbon stock local monitors are women, the participation of women and youth are very high on mangrove replanting)
  • Carbon revenue are used to dig well for the village partners of the project
  • The project is helping to tackle climate breakdown through mangroves, which sequester carbon from the atmosphere
  • Protecting and restoring mangroves is revitalising fish stocks, rejuvenating and sustaining mud crab and shrimp fisheries
  • Nurseries for terrestrial native trees have been established to supply community needs on timber

  • Preservation of threatened wildlife (e.g. endangered fruit bat species Pterofus rufus), within the mangrove forests, which are under strict protection