| Abstract | The ability of mangrove ecosystem to decrease impact of water quality, including in Segara Anakan Lagoon (SAL) and Meranti Island. The mangrove ecosystem has specific species to adapt water quality and other environment factors. The method of this research used transects method, vegetation analysis and water quality analysis. The results showed that(1) the mangrove species were Aegiceras corniculatum, Avicennia alba, Avicennia marina, Bruguiera gymnoriza, Bruguiera parviflora, Celedendrum inerme, Ceriops tagal, Excoecaria agallocha, Hibiscus tiliaceus, Lumnitzera racemosa, Nypa fruticans, Pandanus sp., Rhizophora apiculata, Xylocarpus granatum (Meranti Island) and Avicennia marina, Avicennia alba, Rhizophora mucronata, Rhizophora apiculata, Rhizophora stylosa, Sonneratia alba, Sonneratia caseolaris, Bruguiera gymnorryza, Bruguiera sexangula, Bruguiera parviflora, Aegyceras corniculatum, Ceriops tagal, Ceriops decandra, Xylocarpus moluccensis, Xylocarpus granatum, Excoecaria agallocha, Heritiera littoralis and Nypa frutican (SAL) (2) Water qualities were salinity 14,27 ppt, pH 4,98, N-total 0,17 mg/l, phosphate 20,14 mg/l, pyrite 0,71 % (Meranti Island) and water salinity (18 until 31 ppt), pH of water (6,7 until 7,07), pH of soil (5,75 until 6,18), N-total (0,12 until 0,26%), phosphate (10,98 until 14,73 %), C organic (1,18 until 1,57 %) (SAL). |
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