Abstract:
The community structure of benthic macrofauna in seagrass habitat at Kung Krabaen Bay, Chanthaburi were investigated in Apil, June and August 2001. The objective is to compare the benthic macrofauna (>=2.0 mm) between four study sites of Enhalus acordides, bare-sand adjacent Enhalus beds, Halodule pinifolia and bare-sand adjacent Halodule beds. The results of this of study revealed the record of a total of 63 species from 24 families of phychaetes and 37 species from 16 families of molluscans, 11 species from 7 families of crustaceans and the 6 miscellaneous species as Opthiothrix sp., Sipunculus sp., Amphianthus sp., Lingula sp. and Branchiostoma sp. The dominant species of polychaetes were Dasybranchus spp, Notomastus spp, Marphysa spp, Glycera lamelliformis, Lumbrinereis spp, Scolophos simplex and Myriochele sp1. Grain size and organic contents of the study sites were studied. The results showed that all the sites serveyed were classified as fine sand and very fine sand. The organic contents were high in April and the organic contents decreased in August.