ANALISIS VEGETASI Avicennia sp. DAN KARAKTERISTIK SEDIMEN DI KAWASAN MANGROVE DESA SUNGAI RAWA KECAMATAN SUNGAI APIT KABUPATEN SIAK, RIAU

Abstract

The vegetation analysis of  Avicennia  sp.  in Sungai Rawa coastal had been conducted from January to February 2014.  This research aimed to determine the species composition, structure, and condition of mangrove  vegetation, as  well as  sediment characteristic.  Sampling were conducted at three different station based on purposive sampling method using multilevel plot (Nested Quadrat).  The  results showed that mangroves  species  found in  the  coastal village of Sungai Rawa  were  Avicennia alba  and  Avicennia lanata. The level of seedling, saplings and trees showed that  A.alba  was dominant at three station. Analysis of sediment showed that the substrate within  three  station were sand and mud. The analysis showed that mud substrate was dominant in all of the reseach site. The corelation betwen the vegetation and substrate showed a positive corelation with mud substrate and negative corelation with sand substrate.