Akbar Tahir
Unknown Affiliation

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

BAKTERI ASSOSIASI DI KARANG BATU (Skleractinian) YANG TERINFEKSI PENYAKIT TUMOR (Growth Anomalies) YANG BERASAL DARI PULAU SALEMO KABUPATEN PANGKEP Arniati Massinai; Akbar Tahir; Jamaluddin Jompa; Alexander Rantetondok
Jurnal Ilmu Kelautan SPERMONDE VOLUME 3 NOMOR 1, 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v3i1.2126

Abstract

 Coral disease is one of the threats to the health of coral but is not yet widely known. This study was conducted todetermine the types of bacterial associations in hard corals infected with growth anomaly (GA). Coral samplesinfected with GA disease were taken by using SCUBA tool on Salemo Island, Mattiro Bombang Village, PangkepDistrict. Bacterial isolation was performed by removing mucus from corals infected by growth anomaly by 1ml and diluted to dilution 10-3 . Purification of bacteria is done by inoculating the solid medium of Marine Agar.Furthermore, Gram staining and biochemical tests were performed. Bacterial identification was performed basedon colony morphology and biochemical reaction test results. The results showed that GA disease can infectcoral Porites, Acropora digitate, Platygyra and pocillopora . Bacteria are found from the genus Flavobacterium,Acinetobacter  and, Neiseria. Keywords: Bacteria association, coral stone, coral disease, growth anomaly
KEBERHASILAN REHABILITASI TERUMBU KARANG AKIBAT PERISTIWA BLEACHING TAHUN 2016 DENGAN TEKNIK TRANSPLANTASI Chair Rani; Akbar Tahir; Jamaluddin Jompa; Ahmad Faisal; Syafyudin Yusuf; Shinta Werorilangi; Arniati Arniati
Jurnal Ilmu Kelautan SPERMONDE VOLUME 3 NOMOR 1, 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v3i1.2127

Abstract

The purpose of this study was to analyze the succesfullnes use of two coral reef transplantation methods in the rehabilitation ofcoral reefs damaged by the phenomenon of bleaching in 2016 at the waters of Liukangloe Island, Bulukumba, South Sulawesi.In this study two methods were implemented, i.e. methods frame-spider and methods of nails-natural substrates, with 5 unitsas replication, respectively. A total of three kinds of branching corals weretransplanted, namely Acropora robusta, Poritescylindrica, and Pocillopora verrucosa. On each unit transplantation models, attached 6 coral fragments with branch length of5-12 cm for each kind of corals. A total of 3 fragments for each species of corals were labeled and coded for the survival rateand absolute growth monitoring. All five unit of experiments on each model are placed on two areas separately and placedrandomly with depths ranging from 3-4 m in the northern part of island. Observations survival rate and absolute growth of coraltransplant were conducted for every 2 weeks for 28 days by counting the dead coral fragment or missing and measure the lengthof transplant coral branch with a measuring ruler. The effectiveness of the two methods was analyzed based on the survival andgrowth of the absolute value of coral transplant. Survival rate were analyzed descriptively and the average values of absolutegrowth were analyzed by t-student. The use of frame-spider methods and methods of nails-natural substrates as effective inrehabilitating the coral reefs from bleaching phenomenon based on the parameters of survival and growth of Acropora robusta,Porites cylindrica, and Pocillopora verrucosaKeywords: Transplantation methods, coral reef, bleaching coral, Liukang Loe Island
KARAKTERISASI KONDISI KIMIA-FISIKA LINGKUNGAN PADA TINGKATAN DENSITAS MANGROVE YANG BERBEDA DI AMPALLAS, KABUPATEN MAMUJU, SULAWESI BARAT Rantih Isyrini; Shinta Werorilangi; Supriadi Mashoreng; Ahmad Faizal; Akbar Tahir; Rastina Rachim
Jurnal Ilmu Kelautan SPERMONDE VOLUME 3 NOMOR 2, 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v3i2.3006

Abstract

Mangroves have numerous ecological functions as well as economical values. In order to achieve successful of mangrove restoration and regain its functions, understanding on the factors affecting the establishment of mangroves are required. This study examined the characteristics of physico-chemical factors from three compartments (sediment, interstitial and seawater) that associated with different mangrove densities in Ampallas, District of Mamuju, West Sulawesi. The Principal Component Analysis and Spearman correlation analysis showed that high densities of adult and seedling mangroves strongly correlated to higher organic contents, dissolved oxygen of interstitial water, seawater salinities and lesser pH of sediments, seawater and interstitial. The reverse conditions applied for the less mangrove densities and control site that had no mangrove. In most cases, there were reciprocal relationships amongst the studied variables.Keywords: chemical-physical factors, density, mangroves.
TEMPORAL DYNAMICS OF EUTROPHICATION LEVEL AND SEDIMENTATION RATE IN CORAL REEF AREA OF SPERMONDE AND SEMBILAN ISLANDS, SOUTH SULAWESI Chair Rani; M Natsir Nessa; Ahmad Faizal; Shinta Werorilangi; Akbar Tahir; Jamaluddin Jompa
Jurnal Ilmu Kelautan SPERMONDE VOLUME 4 NOMOR 1, 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v4i1.3799

Abstract

Spermonde and Sembilan Islands (Bone Bay) are the central distribution of coral reefs in South Sulawesi. These archipelagos are likely to be at risk from eutrophication and sedimentation from intensive agriculture and aquaculture activities, in particular through transport of nutrients and materials discharged to the river systems on the Sulawesi mainland. The aim of this study was to analyse the temporal dynamics of eutrophication levels and sedimentation rates on coral reefs area of Spermonde and Sembilan Islands. Nutrient concentration and sedimentation rate were collected at monthly intervals over 4 months, at six stations: three in the Spermonde Islands (Laiya, Kodingareng, and Samalona Islands), and three in the Sembilan Islands, Sinjai District (Batanglampe, Kambuno, and Burungloe Islands), with two data collection points/replicates at each station/island. The results showed that phosphate concentration and sedimentation rates were higher in the Sembilan Islands, whereas nitrate concentrations were similar in both island groups. Nitrate concentration data indicated that eutrophication levels was varied, ranging from oligotrophic to eutrophic conditions, depends on months. In July and September, eutrophication was observed at all stations in both locations. Sedimentation rates were higher in the Sembilan Islands, but declined gradually until the end of the study time. Conversely, at stations in the Spermonde Islands, especially Samalona and Kodingarengkeke Islands, sedimentation level was increased significantly until the end of the study.
Kualitas Kesehatan Ekosistem Benua Maritim Indonesia untuk Keberlanjutan Sumber Daya Ikan Akbar Tahir
Prosiding Simposium Nasional Kelautan dan Perikanan Vol. 5 (2018): PROSIDING SIMPOSIUM NASIONAL V KELAUTAN DAN PERIKANAN UNHAS
Publisher : Fakultas Ilmu Kelautan dan Perikanan (FIKP), Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (252.79 KB)

Abstract

Suatu ekosistem terdiri atas tumbuhan, hewan dan mikroorganisme (komunitas biologis) yang berinteraksi satu sama lain, juga dengan lingkungan fisik dan kimia, serta dengan ekosistem sekitar dan atmosfir. Struktur dan berfungsinya ekosistem didukung oleh hasil interaksi dan umpan balik antara organisme dengan lingkungannya (biogeofisik). Pada setiap ekosistem, makhluk hidup membentuk suatu komunitas yang berinteraksi satu sama lain, dengan udara, air dan tanah/sedimen di sekitarnya. Ekosistem-ekosistem ini menyediakan sejumlah besar bahan dan jasa (jasa-jasa ekosistem) yang menopang kehidupan makhluk hidup. Jasa ekosistem adalah “manfaat yang diterima makhluk hidup (termasuk manusia) dari ekosistem, termasuk penyediaan jasa-jasa seperti bahan makanan dan air (provisioning services), pengendalian banjir dan kekeringan, degradasi lahan dan penyakit (regulating services), demikian juga dengan jasa-jasa lainnya seperti pembentukan tanah/sedimen dan siklus nutrien, serta jasa-jasa kebudayaan seperti rekreasi, spiritual, keagamaan dan manfaat non-material lainnya”. Tindakan-tindakan untuk mengkonservasi keanekaragaman hayati ini jelas akan menghasilkan perlindungan dan keberlanjutan dari barang dan jasa yang disediakan ekosistem. Sehingga upaya-upaya memelihara atau menjaga kesehatan ekosistem sangat bermanfaat dalam memperkuat konservasi keanekaragaman hayati. Penelaahan kesehatan ekosistem (ecosystem health) merupakan salah satu prioritas utama saat ini, baik oleh ilmuwan, manajer maupun pemerintahan di seluruh belahan dunia. Tekanan yang menyebabkan menurunnya kondisi kesehatan ekosistem (masa kini dan masa mendatang) termasuk hilangnya habitat alami (misalnya: akibat perubahan pola penggunaan lahan, ekosistem terumbu karang semakin berkurang, rusaknya habitat dasar perairan akibat trawling), perubahan iklim, invasi spesies asing, masuknya nutrien bahan cemar, eksploitasi berlebihan (terhadap stok ikan) serta faktor-faktor lainnya. Dampak utama relatif dari tekanan-tekanan ini sangat berbeda bagi ekosistem-ekosistem yang kita ketahui, namun diyakini akan terus berkontribusi pada penurunan populasi spesies dan hilangnya keanekaragaman hayati pada beberapa dekade mendatang. Terutama apabila tidak diadakan regulasi dan pengontrolan ketat bagi kegiatan-kegiatan manusia yang mendominasi seluruh fungsi-fungsi ekologis. Ekosistem-ekosistem yang didominasi oleh aktivitas manusia, termasuk berbagai sistem biofisik mengalami tekanan sedemikian tingginya hingga mengalami disfungsi, baik pada tingkat regional maupun global. Makalah ini membahas pentingnya memelihara kondisi kesehatan ekosistem utama di Benua Maritim Indonesia (BMI) untuk menjamin keberlanjutan sumberdaya ikan. Kata kunci: kesehatan ekosistem, sumberdaya ikan, BMI. 
Kajian Stok Karbon Mangrove di Bebanga Kabupaten Mamuju Sulawesi Barat Muhammad Syukri; Supriadi Mashoreng; Shinta Werorilangi; Rantih Isyrini; Rastina Rastina; Ahmad Faizal; Akbar Tahir; Sulaiman Gosalam
Prosiding Simposium Nasional Kelautan dan Perikanan Vol. 5 (2018): PROSIDING SIMPOSIUM NASIONAL V KELAUTAN DAN PERIKANAN UNHAS
Publisher : Fakultas Ilmu Kelautan dan Perikanan (FIKP), Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.392 KB)

Abstract

Percepatan pemanasan global dan perubahan iklim terutama disebabkan oleh aktifitas manusia. Salah satu strategi untuk mitigasi pemanasan global dengan memanfaatkan ekosistem, misalnya ekosistem mangrove untuk menyerap dan menyimpan karbon dalam bentuk biomassa. Penelitian dilakukan untuk mengkaji stok karbon mangrove dilaksanakan pada bulan Mei 2016 di Kelurahan Bebanga Kabupaten Mamuju, Sulawesi Barat. Metode yang digunakan adalah non-destructive dengan pendekatan biomassa melalui persamaan allometrik. Asumsi yang digunakan adalah stok karbon sebesar 50% dari nilai biomassanya. Sampling dilakukan pada empat stasiun dengan kerapatan mangrove yang berbeda, mulai dari kategori jarang sampai kategori padat. Selain stok karbon juga dilakukan pengamatan tutupan kanopi menggunakan metode hemisperical photograph. Hasil penelitian menunjukkan bahwa ditemukan enam jenis mangrove di lokasi penelitian, yaitu Rhizophora mucronata, R. apiculata, Sonneratia alba, Avicennia alba, A. marina, dan Bruguiera Gymnhorriza. Jenis mangrove yang mendominasi Stasiun 1 adalah R. apiculata dan S. alba, Stasiun 2 dan Stasiun 3 oleh jenis R. mucronata, sedangkan Stasiun 4 adalah jenis S. alba. Secara berturut-turut, total stok karbon pada Stasiun 1, 2, 3 dan 4 adalah: 342,86 ton C/ha, 689,29 ton C/ha, 1202,54 ton C/ha dan 357,25 ton C/ha. Jenis mangrove Rhizophora mucronata mempunyai kontribusi terbesar terhadap total stok karbon pada semua stasiun kecuali pada Stasiun 1 yang didominasi oleh Sonneratia alba. Hasil analisis regresi linear menunjukkan bahwa stok karbon dan tutupan kanopi mangrove tidak menunjukkan hubungan yang erat. Kata Kunci: biomassa mangrove, stok karbon mangrove, tutupan kanopi mangrove, mamuju. 
SINTASAN DAN PERTUMBUHAN TRANSPLANTASI KARANG HIAS ACROPORA SP DI DESA TONYAMAN, KECAMATAN BINUANG, KABUPATEN POLEWALI MANDAR Abdul Haris; Chair Rani; Akbar Tahir; Andi Iqbal Burhanuddin; Muh. Farid Samawi; Rahmadi Tambaru; Shinta Werorilangi; Arniati Arniati; Ahmad Faizal
Jurnal Ilmu Kelautan SPERMONDE VOLUME 3 NOMOR 2, 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v3i2.3000

Abstract

Culture of ornamental corals applying transplantation technique was aimed to know the successful of this transplantation technique in the ornamental coral culture based on its growth and survival rate of various coral fragments. The location of the medium settlement was in the western side of the waters of Tonyaman Village, Binuang Subdistrict, Polewali Mandar Regency with 3-4 meter depth during low tide. One of coral species i.e. Acropora  sp with 48 fragments was put on 4 transplantation tables. During the experiment, cleaning of fungi and biofouling at the transplant tables and the culture tables. Measurements of the absolute growth and survival rate were done at the 21st day using calliphers and numbers of dead and live fragments were counted directly. Coral transplantation workshop for ornamental coral culture was attended by 4 fisherman groups with total 23 participants. This event was understood by the training participants from the seed selection to the monitoring. Number of coral fragment cultured was 48 fragments obtained from one of stony corals (Scleractania), i.e. Acropora  sp. The range of survival rate that has been cultured for 21 days was adequately high i.e. 91.7 – 100 %. The highest survival rate was observed at the transplant table B, i.e. 100%, whereas, the table A, C, and D were 91.7 %. Average absolute growth of the coral Acropora  sp cultured during this study were ranged from 4.2 – 4.9 mm/month. Aaverage absolute growth was found at table transplant B and C, while the lowest value was observed at the transplant table D.Keywords: cultivation, ornamental coral, transplantation technique, Tonyaman
HEAVY METALS CONTENT OF COPPER (CU) AND LEAD (PB) IN CODIUM FRAGILE SEAWEED Nasrul Hidayatullah; Inayah Yasir; Akbar Tahir
Jurnal Ilmu Kelautan SPERMONDE VOLUME 9 NOMOR 1, 2023
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v9i1.19767

Abstract

This study aims to determine the concentration of copper (Cu) and lead (Pb) inseaweed Codium fragile and is expected to add information about copper (Cu) and lead (Pb) which accumulates inseaweed C. fragile in Puntondo waters. , Takalar Regency. This research was conducted from January to August 2021, located in Puntondo waters, Takalar Regency. This research method collects data in the form of seaweed samples from the field and seaweed obtained from seaweed sales. Data analysis was carried out using the One Way Anova test with a further test of LSD (Least Significant Difference). The results of this study indicate that the metal content of copper (Cu) at each research station in seawater and C. fragile samples has passed the threshold, while the content of lead (Pb) at each station in seawater and C. fragile samples has not passed the threshold based on PP No. 22 of 2021 (<0.008 mg/L) for sea water and BPOM Regulation No. 23 of 2017 (<0.2 mg/kg) for consumption materials. The metal content of copper (Cu) in seawater at each research station was significantly different and the metal content of copper (Cu) in C. fragile at each research station was not significantly different. The metal content of lead (Pb) in C. fragile seaweed at each research station was significantly different and the metal content of lead (Pb) in seawater at each station was below the detection limit of the instrument (<0.01 ppm). The highest content of copper (Cu) in seawater was found at stations near from the ships activity, that is 0.3625 mg/L, followed by stations close to settlements at 0.235 mg/L. The highest content of copper (Cu) in C. fragile was found at stations close to settlements at 6.63 mg/kg followed by stations at PPI Beba at 6.1575 mg/kg and stations close to ships activity at 4,965. mg/kg.