Mangrove- Polders

Selection of mangrove species to optimise aquaculture based livelihoods and biodiversity in climate smart designed polders of Bangladesh.

The polders in the Ganges-Brahmaputra delta of Bangladesh were constructed for rice cultivation but due to salinization caused by sea-level rise and climate change impact, rice is progressively replaced by shrimp. Mangroves enhance coastal protection, biodiversity and aquaculture productivity. This project supports the option of enhancing shrimp cultivation by landscaping the primary irrigation canals into a mangrove ecosystem (see picture). Though growth of mangroves is relatively rapid when habitat conditions are suitable, confirming success of the new system will require more time. The effect of mangroves on water quality will be assessed on-station, but the verification of their effects on sediment characteristics requires more than two years. Two PhD researchers will work in the team of experts from Solidaridad International, Khulna University, Wageningen Marine Research and AFI.