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All Journal HAYATI Journal of Biosciences MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Buletin PSP Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia Forum Pasca Sarjana Maspari Journal AGRISAINS JURNAL PERIKANAN DAN KELAUTAN TROPIS ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Akuatika Berkala Perikanan Terubuk POSITRON Maspari Journal Jurnal Penelitian Hutan Tanaman Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Bisnis Perikanan Journal of Indonesian Coral Reefs Jurnal Kelautan Tropis Omni-Akuatika BULLETIN OF THE MARINE GEOLOGY Marine Research in Indonesia Biosaintifika: Journal of Biology & Biology Education Indonesian Aquaculture Journal Jurnal Segara Jurnal Sosial Ekonomi Kelautan dan Perikanan JURNAL PERIKANAN TROPIS

Dietriech Geoffrey Bengen

Departemen Ilmu Dan Teknologi Kelautan, FPIK, Institut Pertanian Bogor

Author-ID : 241924

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Library & Information Science Materials Science & Nanotechnology Physics Social Sciences Other

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SPATIAL DISTRIBUTION AND HABITAT PREFERENCE OF BIVALVIA IN THE COASTAL WATERS OF SIMPANG PESAK SUB DISTRICT, EAST BELITUNG DISTRICT Irma Akhrianti; Dietriech G Bengen; Isdradjad Setyobudiandi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 1 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

The coastal waters of Simpang Pesak Sub-district, East Belitung Regency considered as a productive region and had a broad range of habitats for bivalvia. However, research on spatial distribution and habitat preference of bivalvia in this region is limited to none. The objectives of this research were to examine the effects of marine biophysical parameters and substrate quality on bivalvia. The research was started from Mei 2013 until June 2013 by using survey method and random systematic sampling approach. The results showed that there were 16 species of bivalves consisted of 14 genus from 7 family and dominated by Gafrarium pectinatum at station I (13.62 ind/m2, C=0.52, H’=0.6, muddy sandy), and station II (28.4 ind/m2, C=0.51, H’=1.04, sandy), Gafrarium tumidum at station III (59.9 ind/m2, C=0.51, H’=1.03, sandy), Scapharca pilula at Stasiun IV (61,6 ind/m2, C=0.5, H’=0.89, clay sandy). Spatial distribution and density of bivalves were influenced by particle size, C-organik, and other environmental factors such as current, dissolved oxygen, TSS, temperature, and salinity. Keywords: bivalves, distribution, habitat preference

SCREENING ON THE POTENTIAL BIOACTIVE COMPOUNDS OF ANTIBACTERIAL ACTIVITY IN SOFT CORAL COLLECTED FROM SOUTH BANGKA ISLAND WATERS AND LAMPUNG BAY Rozirwan Rozirwan; Dietriech G Bengen; Neviaty P Zamani; Hefni Effendi; Chaidir Chaidir
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

ABSTRACT Soft corals contain bioactive compounds that can be used as a marine natural product. The puposes of this study was to determine of the soft corals inhibition potential for antibacterial activity. The methodology in this study included field sampling, extraction (in the solvent of n-hexane, ethyl acetate and methanol), antibacterial bioassay, and briefly describe the type of soft coral that possesed the highest inhibition. In sampling treatment, the biomass among wet samples and dry samples varied. The highest shrinkage due to drying was found in Nephthea, followed by Lobophytum and Sarcophyton, while the lowest was found in the genus of Sinularia. Extracted from 12 samples of soft coral, the lowest extract weight was found in the semi-polar solvent (EtOAc), while the extract weight of n-Hex and MeOH was vary. Inhibition power from all extract samples was found on soft coral extract in the EtOAc and MeOH solvents. The highest value of inhibition power was found in soft coral of Sinularia polydactyla and S. Flexibilis within strong catogery. Keywords: bioactive compounds, Lobophytum, Nephthea, Sarcophyton, Sinularia, soft coral

CONCENTRATION HEAVY METALS (Cu AND Pb) IN MUSI RIVER ESTUARY Wike Ayu Eka Putri; Dietriech G. Bengen; Etty Riani
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

The Musi River is one of the biggest river of twelve big rivers in South Sumatra Province. Water quality of this river affects the water quality in the estuary and biological health in its surrounding so that it is important to determine the Cu and Pb concentrations. The purposes of this study were to analize distribution of heavy metals (Cu and Pb) and to determine the water quality status in March and September 2014. The water and sediment samples were collected from eight stations along the Musi River from downstream to the estuary. Heavy metal concentration was analized by employing USEPA 30050B method using AAS Spektra plus variant with air mixure flame – acetylene. Dissolved Cu and Pb concentrations in March were 0,002 - 0,006 mg/l and 0,002-0,003 mg/l, respectively, while in September were 0,001-0,010 mg/lfor Cu and 0,001-0,005 mg/lfor Pb. Cu and Pb concentrations in sediment detected in March were 6,92-16,4 mg/l and 1,9-11,4 mg/l, respectively, while in September were 2,3-13,9 mg/l for Cu and 4,29-9,95 mg/l for Pb. Student test analysis showed that was no significant differences between Pb and Cu concentrations (dissolved and sediment) between March and September. Generally, the concentration of heavy metals Cu and Pb in Musi River estuary were still below specified quality standards.Keywords: heavy metal, Cu, Pb, the Musi River, estuary

BACTERIAL SYMBIONT BIOACTIVE COMPOUND OF SOFT CORAL Sinularia flexibilis AND S. polydactyla . Rozirwan; Dietriech G. Bengen; . Chaidir; Neviaty P. Zamani; Hefni Effendi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Symbiont bacteria on soft coral can produce bioactive compounds that plays an important role in chemical ecology and as a marine natural product. The purpose of this study was to find and characterize the antibacterial activities of active compounds extracted from bacterial symbionts of soft coral S. flexibilis and S. polydactyla. The methods used in this study were culture and isolation of bacterial symbionts, extraction of compounds, antibacterial bioassay, and identification of bioactive compounds using the LC-MS analyses. Four isolates of bacterial symbionts were obtained from two samples of soft corals, 2 isolates of Pseudomonas diminuta (A1) and Edwardsiellla hoshinae (A2) from soft coral S. flexibilis, and 2 isolates of E. hoshinae (B1) and P. acidovorans (B4) from S. polydactila. Antibacterial activity were found only from the extracts of bacterial symbionts P. diminuta (A1) and from S. flexiblis about 10.16 ± 0.3mm (for B. subtilis), 8.66 ± 0.8 mm (E. coli) and 9.86 ± 1.7mm (S. dysentri). No antibacterial activity found from the extracts of S. polydactyla. The results of LC MS analysis showed that the group of diterpenes sinularin produced by soft corals S. flexibilis and bacterial symbionts isolates of P. diminuta (A1).Keywords: Bacterial Symbiont, Bioactive Compound, Antibacterial Activity, Soft Coral, Sinularia flexibilis, Sinularia polydactyla

ASSOCIATION OF LOKAN SHELL Geloina erosa, SOLANDER 1786 AND MANGROVE AT KAHYAPU COASTAL AREA OF ENGGANO ISLAND, BENGKULU PROVINCE Nella Tri Agustini; Dietriech G. Bengen; Tri Prartono
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 8 No. 2 (2016): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Lokan shell Geloina erosa closely related to mangrove ecosystem in Enggano island. Mangrove is one supplier of organic materials required by Lokan shell. The research conducted in September 2015 - January 2016 at mangrove ecosystems in Kahyapu coastal area, aims to analyse lokan shells Geloina erosa conditions and its association with mangrove ecosystems. Sampling of mangrove vegetation was taken using line transect and lokan shell sampling using plot in mangrove ecosystem. The results show that mangrove condition of the Kahyapu coastal area was in healthy condition for the growth of lokan shell. Lokan shell are significantly assosiated with mangrove in Kahyapu coastal area of Enggano Island.

COMPOSITION AND ANTIBACTERIAL ACTIVITIES OF MARINE SPONGES FROM DIFFERENT SEAGRASS ECOSYSTEMS IN KEPULAUAN SERIBU WATERS, JAKARTA Meutia Samira Ismet; Dietriech G. Bengen; Ocky Karna Radjasa; Mujizat Kawaroe
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 8 No. 2 (2016): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

A seagrass ecosystem has high productivity that supports many species of associated invertebrates, including sponges. However, seagrass beds with different habitat condition, including seagrass species composition and architectural morphotypes could affect the associative sponge in the ecosystem. This study is aimed to find out about sponge species composition in different seagrass beds. The observation was conducted in two seagrass ecosystems at the east (site 1) and at the southeast (site 2) of Pramuka Island, Kepulauan Seribu, near Jakarta Bay, Indonesia. The Belt Transect was used to assess the density of sponges on the seagrass ecosystem, which was placed parallel to the coastline. The sponges species has higher number at the east than the southeast, with both sites was dominated by Spirastrella sp. and Agelas conifera. Correspondence Analysis (CA) results showed that sponges community has close interaction with seagrass abundance especially Cymodocea rotundata and Enhalus acoroides and architectural characteristic (patchily or continues meadows). Antibacterial assay of sponges tissue showed that only 7 sponge species has activity against targeting bacteria. The CA results also showed that sponge antibacterial activity was not correlated with seagrass species, with low bactericide and bacteriastatic activities. The implication of this result showed that sponges community can grow up at seagrass ecosystem eventhough their potential secondary metabolite activities is very low probably due to lack of stimulus mechanisms in the environment.

POPULATION STRUCTURE AND MORPHOMETRY OF HORSESHOE CRAB Carcinoscorpius rotundicauda, Latreille 1802 IN KAMPUNG GISI COASTAL AREA OF BINTAN BAY OF RIAU ISLANDS PROVINCE Rika Anggraini; Dietriech G. Bengen; Nyoman Metta N. Natih
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 1 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Horseshoe crab, Carcinoscorpius rotundicauda is frequently found in the coastal zone of Bintan Bay of Riau Islands Province. The study was conducted from August to September 2016 in coastal area of Kampung Gisi, Bintan bay. The aims of the study were to analyse the population structure and morphometric characters of horseshoe crab and its relation to the coastal environmental characteristics. Sampling of horseshoe crab was taken using belt transect method, and coastal environmental parameters were measured in-situ. The results show that b values of length-weight relationship were found to be 3.3 (male) and 2.6 (female) respectively. Furthermore, the growth pattern of males were positive allometric, and females were negative allometric. Horseshoe crab are closely related to sandy mudflats sediment, brackish water salinity and mangrove habitat distribution. Keywords: horseshoe crab, population structure, morphometry, environmental characteristics, Bintan Bay

SUSTAINABILITY ANALYSIS OF MANGROVE ECOSYSTEM FOR ECOFISHERYTOURISM IN SIDOARJO LUMPUR ISLAND Yanelis Prasenja; Abimanyu Takdir Alamsyah; Dietriech G. Bengen
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 1 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Sidoarjo Lumpur Island is an artificial island created as a solution to the handling of sediment deposition in Porong River Estuary as a result of the mudflow which flowed into the sea via the Porong River. Lumpur Island is currently utilized as a habitat for mangrove ecosystem extension as well as a site for aquaculture with wanamina system (silvofishery). Ecofisherytourism is a way to utilize mangrove ecosystem for ponds silvofishery based on educational and economic approach to achieve the welfare of society. In addition, ecofisherytourism has a direct benefit of preserving nature and the environment. The research objective was to evaluate the condition of the mangrove ecosystem and analyze the physical condition of the Sidoarjo Lumpur Island as a reference in developing the island as ecofisherytourism region. The methods used were a combination of quantitative and qualitative methods. Data were collected through analysis of aerial photographs, field measurements, observation and documentation. Mangrove ecosystem conditions in Lumpur Island was classified as good to be utilized as ecotourism and fisherytourism . The highest elevation of the island is the tidal zone where mangroves grow well. Keywords: ecofisherytourism, mangrove, silvofishery

DISTRIBUTION AND BIOACCUMULATION OF HEAVY METALS Pb AND Cd ON BIVALVES Anadara nodifera, Meretrix lyrata, AND Solen lamarckii IN COASTAL WATERS OF THE WEST MADURA STRAIT . Ahyar; Dietriech G. Bengen; Yusli Wardiatno
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 2 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Madura strait receives waste disposal from various activites in the mainland, making it vulnerable to contamination of harmful pollutants. Some of the harmful pollutants are heavy metal Pb and Cd. The high concentration Cd and Pb give negative impacts to the biota including bivalves. This study was conducted to assess the distribution of heavy metals Pb and Cd in the waters and their accumulation in bivalves Anadara nodifera, Meretrix lyrata, and Solen lamarckii in coastal waters of the West Madura Strait. Heavy metal analysis refer to APHA 2012 using AAS. The results showed that concentration of Cd and Pb in water were below the quality standards, while in sediment were above the standard (Cd of 7.20 mg/kg and Pb of 62.06 mg/kg). The concentration of Cd in bivalve were different among the species tested A. nodifera of 6.10 mg/kg, M. lyrata of 3.65 mg/kg, and S. lamarckii of 2.74 mg/kg, as well as Pb concentration A. nodifera of 60.10 mg/kg, M. lyrata of 51.48 mg/kg, and S. lamarckii of 45.29 mg/kg). These results indicated that the three shells have exceeded the maximum limit of heavy metal contamination in food (Cd of 1.0 mg/kg and Pb of 1.5 mg/kg). Keywords: bivalve, heavy metal, Madura Strait

KARAKTER MORFOMETRIK DAN ASOSIASI TUNA SIRIP KUNING Thunnus albacares DAN TUNA BAMBULO Gymnosarda unicolor (Ruppell) DI PERAIRAN SIMEULUE, PROVINSI ACEH Burhanis Burhanis; Dietriech Geoffrey Bengen; Mulyono Sumitro Baskoro
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 2 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Pulau Simeulue yang dikelilingi oleh terumbu tepi, secara geografis termasuk ke dalam wilayah Kabupaten Simeulue yang berbatasan langsung dengan Samudera Hindia. Tuna sirip kuning Thunnus albacares dan tuna bambulo Gymnosarda unicolor merupakan jenis epipelagik yang potensial di perairan Simeulue. Kedua jenis tuna ini belum banyak dipelajari karakter bio-ekologinya. Penelitian ini penting dilakukan untuk mengetahui karakter morfometrik dan mengkaji asosiasi spesifik tuna di perairan Simeulue. Penelitian dilakukan pada bulan Februari 2017, dengan metode pengamatan dan pengukuran langsung tuna hasil tangkapan nelayan yang menggunakan alat tangkap pancing ulur, dan selanjutnya dianalisis dengan menggunakan analisis komponen utama (principal component analysis) dan analisis cluster. Hasil tangkapan tuna sirip kuning sebanyak 85 ekor dengan kelas ukuran 35-105 cm dan sebanyak 189 ekor tuna bambulo dengan kelas ukuran 40-110 cm. Karakter morfometrik tuna sirip kuning dan tuna bambulo yang didominasi ukuran besar terdapat di stasiun Teupah Selatan, dan dominasi ukuran kecil di stasiun Simeulue Timur. Asosiasi spesifik tuna sirip kuning dan tuna bambulo pada tingkat similaritas 80,0% membentuk 3 (tiga) kelompok.

Co-Authors . Ahyar . Chaidir . Suharsono Abdul Harim Abdul Motalib Angkotasan Abdullah Hisam bin Omar Abimanyu Takdir Alamsyah Achmad Fahrudin Achmad Fahrudin Achmad Fahrudin Achyani, Ratno Aditya Hikmat Nugraha Agus Atmadipoera Agus Atmadipoera Agus Sholeh Atmadipoera Agustin Rustam Ahmad Najid Al Azhar Al Azhar Alimudin Laapo An Nisa Nurul Suci Andi Irwan Nur Andi Irwan Nur, Andi Irwan Angela Mariana Lusiastuti Audina Putri Awal . Subandar, Awal . Awal Subandar Beginer Subhan Bintal Amin Budi Hascaryo Iskandar Budy Wiryawan Burhanis Burhanis Chaidir Chaidir Dafit Ariyanto Damar, Ario David Smith Dedi Soedharma Dondy Arafat Efriyeldi, Efriyeldi Erlania Erlania Etty Riani Fauzan Dzulfannazhir Ferdinan Yulianda FERY KURNIAWAN Franto Novico Fredinan Yulianda Gede Iwan Setiabudi Hawis H Madduppa Hefni Effendi Hilda Zulkifli Hilda Zulkifli I Wayan Nurjaya I Wayan Nurjaya Idris Idris Indri Manembu Ira Dillenia Irma Akhrianti Isdradjad Setyobudiandi Isdradjad Setyobudiandi Isni Nurruhwati Isni Nurruhwati John Haluan John I Pariwono Joshian N.W. Schaduw Juraij Juraij Kadarwan Soewardi Kurdi Gunawan Lalu M. Iqbal Sani Leni Maryani Lilik Budi Prasetyo Luky Adrianto Luzmi Malia Izza Mai Suriani Majariana Krisanti Marthen Welly Martini Djamhur Maya F Tamimi Mennofatria Boer Meutia Samira Ismet Michael John Sweet Michael Sweet Mudjirahayu Mudjirahayu Muh. Rasman Manafi Muhammad Ishak Jumarang Muhammad Kasnir Muhammad Masrur Islami, Muhammad Masrur Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe Mulyono S. Baskoro Najid, Ahmad Nanda Tiara Diningsih Nella Tri Agustini Neviaty P Zamani Neviaty P Zamani Neviaty P. Zamani Neviaty Putri Zamani NEVIATY PUTRI ZAMANI Novian Prahandhy Kusuma Nurlisa Butet, Nurlisa Nurlita Putri Anggraini Nyoman M N Natih Nyoman M.N Natih Ocky Karna Radjasa Ocky Karna Radjasa Ofri Johan Ofri Johan Ofri Johan Ofri Johan Pertiwi, Setyo Prakas Santoso R Widodo Rahma Aprilian Rainer A Troa Riana Faiza Richard J. Stanford Richardus F Kaswadji Richardus F Kaswadji Richardus Kaswadji Richardus Kaswadji RIDWAN AFFANDI Rika Anggraini Riris Aryawati Rita Rachmawati Rokhmin Dahuri Roni Bawole Rozirwan . Rudi Febriamansyah Sadikin Amir Safar Dody Sebastian C. A. Ferse Setyo Handayani Sonja Kleinertz Subhat Nurhakim Suharsono Suharsono Suharsono _, Suharsono Syahrial Syahrial Tengku Zia Ulqodry Tri Prartono Tridoyo Kusumastanto Ummu Salma Unstain NWJ Rembet Vijaya Isnaniawardhani Welmar Olfan Basten Barat Wike Ayu Eka Putri Yanelis Prasenja Yundari, Yundari Yunianto Setiawan Yunita Luhulima Yunita Ramili Yusli Wardiatno

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