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Journal > Jurnal Ilmiah Biologi > STRUKTUR KOMUNITAS MANGROVE DI SEKITAR JEMBATAN SURAMADU SISI SURABAYA

 

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Jurnal Ilmiah Biologi
Vol 1, No 1 (2012): Jurnal Ilmiah Biologi
STRUKTUR KOMUNITAS MANGROVE DI SEKITAR JEMBATAN SURAMADU SISI SURABAYA
Susanto, Ade Hermawan ( Departemen Biologi Fakultas Sains dan Teknologi Universitas Airlangga Kampus C 60115)
Soedarti, Thin
Purnobasuki, Hery
Article Info   ABSTRACT
Published date:
03 May 2012
 
The objective of this research was to identify the diversity, domination, and zonation ofmangrove community in the area of Suramadu bridge at Surabaya. Data’s were taken using belttransect method, by making a line transect perpendicular from shore line. Five transect plotswere then made in series with each plot measuring 10 x 10 meters square to the criteria of tree, 5x 5 meters square to sapling criteria, and 2 x 2 meters for seedlings criteria. In each plot wasidentified species, stem diameter of each stand of mangroves and the number of individuals ofeach species of mangrove. Vegetation datas were then analyzed using Mueller and Dumboisformula to obtain the value of density, frequency, dominance, and importance of the plant.Vegetation datas were also calculated to obtain an index of diversity using Shannon weaverindex and dominance index by using Simpsons formula. The results of research showed that itwas found seven species of mangrove that composed the vegetation and it consisted of fourdifferent families of mangroves plant: Avicenniaceae (Avicennia marina and Avicennia alba),family  Sonneratiaceae                                                                               (Sonneratia  alba),  Rhizophoraceae  family   (Rhizophora  stylosa,Rhizophora  apiculata  and  Rhizophora  mucronata)  and  family Meliaceae                            (Xylocarpusmolucensis). The results of vegetation analysis showed that the value of the highest importanceto criteria was existed on Avicennia marina (235.68%). Mangrove diversity in this area was low(1.1) and it was dominated by Avicennia marina. Mangrove zonation from coastline to land in arow respectively are Avicennia marina, Sonneratia alba and Avicennia alba. Rhizophora stylosaand Rhizophora mucronata at midzone. Xylocarpus molucensis and Rhizophora apiculata atzone bordering land.Key words : Vegetation analysis, Suramadu bridge, diversity, mangrove zonation, structurecommunity.
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