The distribution and the species composition of the existing mangrove vegetation around Chilaw lagoon

Abstract

The distribution pattern, species composition, zonation and the abundanceof the mangrove communities around Chi/aw lagoon were studied. 15 typicalmangrove species and 13 mangrove associates were listed.

Quadrat sampling analysis shows that most of the western part of the lagoonis dominated by Excoecaria agallocha and Aegiceras corniculatum. Line transectanalysis shows a prominent border to Rhizophora apiculata near the shorearound most parts of the lagoon. Some rare mangrove species such as Xylocarpusgranatum is common in the islands of Chi/aw lagoon.

Mangrove area has been reduced due to the new developments and expansiondue to aquaculture.