Since there are no currently active contests, we have switched Climate CoLab to read-only mode.
Learn more at
Skip navigation
Share via:


Mangroves to address sea level rise and coastal erosion



Establish nursery in which two or more mangrove seedlings can be grown in each module made from local materials, e.g. coconut husks. Modules of mangroves grown to varying heights can be deployed to different eroded coasts requiring protection and against future sea level rise.

Category of the action

Mitigation/Adaptation, Changing public attitudes about climate change

What actions do you propose?

Involved the active participation of a coastal community in the proposed project. Initial permission may have to be obtained from the federal or provincial government. The proposed project has several direct implications : contribution to increase the carbon sink of mangroves; economic contributions to the villagers in their collection of mangrove seeds, building nursery and modules, maintenance of the nursery and subsequent deployment and maintenance of the modules at the coast; change in behavioural norms of coastal community from an exploitative to a conservation perspective of mangroves.

Who will take these actions?

Government (federal, provincial or local) – for approval.

Business organization – for co-finance, CSR.

Village community – be physically involved in the proposed project.

Individual – donation.

Where will these actions be taken?

Southeast Asia (e.g. Philippines, Indonesia, Thailand, Cambodia are likely candidates)

What are other key benefits?


  • keep up with sea level rise
  • reduce or stop coastal erosion
  • are a buffer to storm surges and other coastal hazards
  • constitute a significant carbon sink
  • rehabilitate degraded coasts
  • are a nursery for fish and crustaceans
  • contribute to coastal biodiversity
  • provide livelihood opportunities
  • provide an emergency food source
  • contribute to a resilient coast


Planting mangroves is a ‘no regrets’ measure and confirms the ‘precautionary principle’.


What are the proposal’s costs?


Selection of village and awareness workshop    2,000

Seeds collection                                                  1,000

Nursery establishment including modules           2,000

Maintenance of nursery including fertilizers        4,000

Deployment of modules to coast                         2,000

Maintenance of modules at coast including        2,000

Contingency                                                        1,000

Short term maintenance (after 3 yr)                    6,000

Total                                                                   20,000

Time line

1st Quater – Awareness workshop, collection of seeds, establishment of nursery with modules

2nd Quater – Maintenance of nursery, replace/increase number of seedlings

3rd to 8th Quater – Maintenance of nursery

3rd Year  – Deployment of modules to coast

4th Year onwards – Maintenance of modules at coast

Medium and long term – Only protection of mangroves by villages; legislation would be useful.

Related proposals


Adaptation for the coasts and islands :


Building with Nature Indonesia:


Mangrove Action Project 2006. Five Steps to Successful Ecological Restoration of Mangroves. Yogyakarta, Indonesia.