STRUKTUR KOMUNITAS EKOSISTEM MANGROVE DI KAWASAN PESISIR KOTA MUKOMUKO KABUPATEN MUKOMUKO PROVINSI BENGKULU

Mangrove merupakan salah satu ekosistem penting di wilayah pesisir Kota Mukomuko. Ada berbagai macam aktivitas manusia di kawasan ekosistem hutan mangrove di pesisir Kota Mukomuko yang dikhawatirkan dapat menimbulkan dampak negatif. Penelitian ini dilakukan dari bulan Juli 2018 sampai dengan September 2018. Tujuan penelitian untuk mendeskripsikan struktur komunitas mangrove di kawasan pesisir Kota Mukomuko Provinsi Bengkulu. Penelitian ini dilakukan dengan metode survei. Pengambilan data vegetasi mangrove dilakukan dengan menggunakan transek garis dengan ukuran 10 m x 10 m, pada tiga stasiun berbeda, yang meliputi Kelurahan Bandar Ratu, Desa Ujung Padang dan Kelurahan Pasar Mukomuko. Analisis data penelitian dilakukan dengan metode statistik deskripitif. Hasil penelitian menunjukkan bahwa secara keseluruhan nilai kerapatan (Di), frekuensi jenis (Fi), tutupan (Ci) dan indeks nilai penting (INP) tergolong baik, namun nilai keanekaragaman jenis tergolong rendah, dikarenakan ada jenis mangrove yang lebih mendominasi di kawasan tersebut. Indeks nilai penting (INP) mangrove menunjukkan peran vegetasi mangrove di kawasan pesisir Kota Mukomuko tergolong tinggi dalam menjaga lingkungan pesisir, baik tingkatan pohon, anakan maupun semai.STRUCTURE COMMUNITY OF MANGROVE ECOSYSTEM IN COASTAL AREA OF MUKOMUKO CITY, MUKOMUKO DISTRICT, BENGKULU PROVINCE. Mangroves are one of the important ecosystems in the coastal area of Mukomuko City. There are various kinds of human activities in the mangrove forest area on the coast of Mukomuko City which is feared to have a negative impact. This research was conducted from July 2018 to September 2018. The objective of this research was to describe the mangrove community structure in the coastal area of Mukomuko City, Bengkulu Province. This research was conducted by survey method. Data collection on mangrove vegetation was carried out using line transects with sizes of 10 m x 10 m, at three different stations, which included Bandar Ratu Village, Ujung Padang Village and Pasar Mukomuko Village. Analysis of research data was carried out by descriptive statistical methods. The results of the study indicate that overall the density value (Di), frequency type (Fi), cover (Ci) and important values index (INP) were classified as good, but the value of species diversity is relatively low, because there are mangrove species that dominated more in the area. The importance value index (INP) of mangroves indicates  the role of mangrove vegetation in the coastal area of Mukomuko City is high in maintaining the coastal environment, both tree level, tillers and seedlings.