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All Journal Journal of Marine Research Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar)
Nor Sa’adah
Universitas Hang Tuah
Earth & Planetary Sciences Energy Environmental Science

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Potensi Bakteri Simbion Endofit Mangrove Avicennia marina sebagai Antifouling Nor Sa’adah; Alifia Rizky Novitasari
Journal of Marine Research Vol 11, No 1 (2022): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v11i1.33194

Abstract

Biofouling is micro-organism and makrofouling attached to the submerged substrate. Prevention of biofouling organism called antifouling.Tributyltin organotin was using to mixture antifouling paint. Antifouling paints containing toxic and environmentally unfriendly. Symbiotic bacteria have secondary metabolites, there are tanin, steroid, and triterpenoid. This research aimed to obtain antifouling bacteria through isolation process of bacteria obtained from the roots of mangrove Avicennia marina, and analyze the bacterial symbiont inhibitory zone of mangrove Avicennia marina as antifouling. The method was beginning with the isolation of bacteria roots of mangrove Avicennia marina, identification of symbiotic bacteria, and the antifouling activity test. Results obtained from the isolation of bacteria, there are 21 symbiotic endophytic on a sample of the inner root, and 15 epiphytic bacteria on a sample of the outer root. Endophytic bacteria inhibition zone test potential as antifouling from mangrove Avicennia marina that was from the root part that inhibitory zone size strong category for> 10 mm. Biofouling merupakan organisme mikro dan makrofouling yang menempel pada substrat terendam. Pencegahan terhadap organisme biofouling disebut antifouling. Antifouling menggunakan campuran cat Tributyltin organotin. Cat antifouling mengandung bahan beracun dan tidak ramah lingkungan. Bakteri simbion memiliki kandungan metabolit sekunder, seperti tanin, steroid dan triterpenoid. Penelitian ini bertujuan untuk memperoleh bakteri antifouling melalui proses isolasi bakteri yang diperoleh dari akar mangrove Avicennia marina dan menganalisis zona hambat bakteri simbion mangrove Avicennia marina sebagai antifouling. Metode yang digunakan diawali dengan isolasi bakteri akar mangrove Avicennia marina, identifikasi bakteri, dan uji aktivitas antifouling. Hasil yang diperoleh dari isolasi bakteri, yaitu 21 bakteri simbion endofit dan sampel akar bagian luar diperoleh 15 bakteri epifit. Uji zona hambat bakteri endofit yang berpotensi sebagai antifouling dari tumbuhan mangrove Avicennia marina yaitu memiliki ukuran zona hambat kategori kuat karena >10 mm.
ANALISIS KESUBURAN PERAIRAN BERDASARKAN KELIMPAHAN FITOPLANKTON DI MUARA SUNGAI PORONG, SIDOARJO Devi Setyowardani; Nor Sa’adah; Nirmalasari Idha Wijaya
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 3 No 1 (2021): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v3i1.54

Abstract

The disposal of Lapindo mud which carries nutrients and other dissolved organic matter can cause mass enrichment and death of organisms due to the reduced amount of light entering the waters. The existence of phytoplankton can provide information about the state of the waters. This study aims to determine the fertility of the waters of the Porong River through the abundance of phytoplankton. This research was conducted from October to January 2021. Sampling was carried out at three stations. The plankton sampling method was carried out horizontally and identified using the Sedgwick Rafter Counting Cell (SRCC). Nitrate and phosphate water samples used for analysis were measured by Uv-Vis Spectrophotometry. Data analysis includes phytoplankton density, diversity index, uniformity index, and dominance index. The results showed that the composition of the phytoplankton species found during the observation was dominated by diatom classes (13 genera ) and dinoflagellates (2 genera). The abundance value of phytoplankton is 122.293 – 867.776 cells/m3. The water fertility status in the Porong River Sidoarjo is in the eutrophic category, namely waters with high fertility levels.
Co-Authors Alifia Rizky Novitasari Devi Setyowardani Nirmalasari Idha Wijaya