Abstract:
This research was conducted to determine the community structure (composition and
abundance) of meiofauna from mangrove areas in Bandar Bakau Dumai, Riau Province.
Samples were collected from sediment which dominated by four different mangrove
vegetations i.e. Sonneratia alba, Xylocarpus granatum, Avicennia alba and Rhizophora
apiculata. The number of taxa found in the study was 11 taxa, they were Nematoda,
Copepoda, Oligochaeta, Ostracoda, Turbellaria, Foraminifera, Ciliophora, Polychaeta, Isopoda, Kinorhyncha, and Holothuroidea. The average of meiofauna abundance found in sediment dominated by Sonneratia alba, Xylocarpus granatum, Avicennia alba, Rhizophora apiculata were 544,8 ind/10 cm2, 140,8 ind/10 cm2, 111,92 ind/10 cm2 and 22,7 ind/10 cm2 respectively. The abundance of meiofauna vegetation was significantly different (F= 9,20; P<0,05). The abundance of Harpacticoid Copepod was 895.98 Ind/10 cm 2. Diosaccidae was the most dominant Harpacticoid family found this study.
