Melki Melki
Department of Marine Science, Faculty of Mathematic and Natural Science , Sriwijaya University Jl. Raya Palembang-Prabumulih KM 32 Indralaya-OI 30662 Indonesia.

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Carbon Stocks in Mangrove Ecosystems of Musi and Banyuasin Estuarine, South Sumatra Province (Stok Karbon Ekosistem Mangrove di Estuarin Musi dan Banyuasin, Provinsi Sumatera Selatan) Melki, Melki; Isnaini, Isnaini
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 3 (2014): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Hutan mangrove di daerah estuari mampu menghasilkan stok karbon yang sangat besar sebagai daerah perlindungan dan pemulihan yang efektif sebagai strategi mitigasi perubahan iklim yang efektif. Pemilihan ekosistem pesisir dalam strategi mitigasi memerlukan kuantifikasi stok karbon untuk menghitung emisi atau penyerapan berdasarkan waktu. Penelitian ini menghitung stok karbon pada ekosistem Musi Estuari Waters (MEW) dan Banyuasin Estuari Water (BEW), Provinsi Sumatera Selatan pada tipe vegetasi yang berbeda dan hubungan variabel lingkungan dengan stok karbon. Di tujuh lokasi dalam MEW dan BEW sampel vegetasi dan tanah. Hasil yang didapatkan adalah nilai yang lebih tinggi dari stok karbon di vegetasi dari lokasi III/MEW (7.600,92 mg.ha-1), stok karbon dalam tanah dari lokasi II/MEW (61.081,87 mg.ha-1) dan stok karbon di ekosistem dari lokasi II (64.548,54 mg.ha-1). Mangrove A. marina merupakan yang paling baik menyimpan stok carbon termasuk antara vegetasi dan tanah karena toleransi salinitas yang rendah. Kata kunci: mangrove, karbon, estuari, Musi, Banyuasin Mangrove forests in estuarines can have exceptionally large carbon stocks and their protection and restoration would constitute an effective mitigation strategy to climate change. Inclusion of coastal ecosystems in mitigation strategies require quantification of carbon stocks in order to calculate emissions or sequestration through time. This study quantified the ecosystem carbon stocks of the Musi Estuarine Waters (MEW) and Banyuasin Estuarine Water (BEW), Province of South Sumatra into different vegetation types and examined relationships of environmental variables with carbon stocks. At seven sites within MEW and BEW of vegetation and soil samples. The results that the higher value of carbon stock in vegetation from Site III/MEW (7.600,92 mg.ha-1), the carbon stock in soil from Site II/MEW (61.081,87 mg.ha-1) and carbon stock in ecosystem from Site II (64.548,54 mg.ha-1). Mangrove of A. marina the best to explain carbon stocks included both vegetation and soil because they can tolerate lower salinity. Keywords: mangrove, carbon, estuarine, Musi, Banyuasin
Keadaan Budidaya Rumput Laut di Pulau Panjang Provinsi Bangka Belitung Melki, Melki; Agussalim, Andi
Jurnal Penelitian Sains No 16 (2004)
Publisher : Faculty of Mathtmatics and Natural Sciences

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Abstract

Penelitian ini telah dilaksanakan dari tanggal 20 dan 21 Desember 2003 di Pulau Panjang Provinsi Bangka Belitung. Metode yang digunakan adalah metode survey dan wawancara serta data diperoleh dengan pengukuran langsung. Dari hasil pengamatan bahwa Pulau Panjang cocok dijadikan daerah budidaya, karena sudah tersedia bibit alami rumput laut Eucheuma cottonii, faktor lingkungan yang mendukung kegiatan budidaya serta adanya pangsa pasar. Namun kendala yang dihadapi adalah rendahnya nilai jual rumput laut kering. 
Distribution of Ammonium-Oxidizing Bacteria in Sediment with Relation to Water Quality at the Musi River, Indonesia Melki, Melki; Isnansetyo, Alim; Widada, Jaka; Murwantoko, Murwantoko
HAYATI Journal of Biosciences Vol 25, No 4 (2018): October 2018
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (478.826 KB) | DOI: 10.4308/hjb.25.4.198

Abstract

The Musi River is located in the southern Sumatra, Indonesia. Most of activities, i.e. agricultural, industrial, and urban activities are considered as being major sources of chemicals and nutrients with their waste products effluent into the river. Nitrification, the microbial oxidation of ammonia to nitrite and nitrate, occurs in a wide variety of environments and naturally remove anthropogenic N pollution. The purpose of this research was to determine of distribution of ammonium-oxidizing bacteria (AOB) in sediment with relation to water quality at the Musi river area. This study was conducted on rainy and dry season 2016 at five sampling sites from the freshwater to seawater at high and low tide conditions, the sampling sites are station St1 (Gandus), station St2 (Palembang city), station St3 (Upang), station St4 (Sungsang), and station St5 (Sea). Sediment samples were collected from the surface layer by using an Ekman grab. Some water quality such as salinity, temperature, pH, and dissolved oxygen (DO) were directly analyzed in the field, while other water quality such as NH4-N, NO2-N, and NO3-N were analyzed in the laboratory. The Density of AOB was determined by the most probable number of (MPN) method. The PCA was used to correlate variations of the AOB with physicochemical properties using software Xlstat. The results showed that the physicochemical properties had a range of salinity of 0 to 20 ppt, temperature of 29.21 to 31.82oC, pH of 4.88 to 7.93, DO of 3.44 to 11.33 mg/l, NH4-N in sediment of 0.04 to 0.87 mg/l, NO2-N in sediment of 0.01 to 1.77 mg/l, NO3-N in sediment of 0.09 to 2.08 mg/l. The density of AOB ranged from 7.2 x 102 to 6.1 x 103 cells/g sediment. Principal component analyses showed that temperature, pH, DO, and concentrations of nutrient contributed to density of AOB.