Defining priority and corrective actions to strengthen the intervention

Publié: 31 juillet 2022
Dernière modification: 31 juillet 2022

During the implementation of the intervention, the project team conducted the self-assessment that helps determine whether an intervention is in adherence with the IUCN Global Standard for Nature-based Solutionsᵀᴹ. The assessment provided information about the intervention’s strengths and weaknesses and helped derive concrete recommendations and corrective actions for future interventions. Two criteria were deemed insufficient. Criterion 3 (biodiversity net-gain) fell short, because the analysis of the biodiversity benefits achieved through this intervention were largely based on a desk review of existing literature and information rather than a specific assessment, monitoring framework or thorough and collective effort with key informants and stakeholders. Criterion 6 (balancing of trade-offs) was also deemed insufficiently addressed. While there was a reported willingness from the Revolutionary Government of Zanzibar to consider relevant trade-offs, the limits of these trade-offs and associated safeguards were not clarified. In addition, while provisions on the rights, usage of and access to marine and coastal resources for mariculture are in place, further information on how this is applied in practice is required.


Collecte de données de base et suivi des données et connaissances
Évaluation, mesures d'efficacité et apprentissage
Scale of implementation
Phase of solution
Mise en oeuvre
Documentation et dissémination des résultats
Phase d'évaluation

Enabling factors

The assessment was supported by IUCN expert reviewers, who supported the team with the completion of the self-assessment and provided clarification on specific criteria and indicators. Several rounds of discussions revealed that the criteria were sometimes understood and interpreted differently by different people, impacting the assigned rating. This demonstrated the complexities associated with assessing whether an intervention can be considered a Nature-based Solution and the need for thorough and guided consideration of each indicator.

Lessons learned

The IUCN Global Standard for Nature-based Solutionsᵀᴹ served as an important tool to reflect on  design, implementation and monitoring challenges related to aquaculture and seaweed farming approaches applied in the IUCN AquaCoCo Project. It provided insights into areas that require corrective action, the collection of additional evidence and means of verification and involvement of local stakeholders, in particular women. In this manner, the self-assessment results will inform future work on aquaculture and seaweed farming in Zanzibar (and elsewhere) and help improve intervention design, implementation and monitoring frameworks.

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