Lanka Mangrove Museum

Tropical mangroves are rich in carbon and play an important role in reducing climate change by storing carbon dioxide in their trees and soils. However, in Sri Lanka, little research has been done on how restored mangroves contribute to carbon storage.

This study looks at mangrove restoration and afforestation efforts in the Chilaw lagoon, which began in 1994 with the planting of Rhizophora mucronata and R. apiculata. Research was carried out in a 25-year-old mangrove plantation covering about 0.25 hectares. We identified the species present, measured tree height and girth, and estimated above- and below-ground biomass and organic carbon using standard methods and equations. Carbon sequestration

Giant Mud Crab- Scylla Serrata
The larvae develop in the marine environment until they reach the juvenile stage, at which
point these juvenile crabs migrate from the ocean to mangroves, brackish waters, estuarine
regions, or lagoon areas. Subsequently, these juvenile crabs mature into adult crabs within
the mangroves, brackish waters, estuarine regions, or lagoon areas. Intertidal mangrove
forests are essential as they provide food, shelter, nursery habitats, and refuge for juvenile
S. serrata. The intricate root systems, such as the prop roots of Rhizophora sp. species,
create hiding spots for these juvenile crabs, protecting them from predators. The mangrove
environment offers safety during their molting phase, a time when crabs are particularly
vulnerable, and it maintains stable conditions—such as reduced water turbulence,
consistent water temperatures shielded by mangrove trees, and suitable salinity levels—
that are conducive to their growth.

“Mangrove Distribution in Sri Lanka”, updated as of September 1, 2023, provides an insightful overview of the presence of true mangrove species across different districts in the country. It was prepared by W.N. Duglas Thesera, Director of the Lanka Mangrove Museum. (Mangrove Map)