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All Journal HAYATI Journal of Biosciences Jurnal Teknologi Perikanan dan Kelautan Jurnal Pengolahan Hasil Perikanan Indonesia Jurnal Ilmu dan Teknologi Kelautan Tropis Journal of Marine and Aquatic Sciences ILMU KELAUTAN: Indonesian Journal of Marine Sciences Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Journal of Indonesian Coral Reefs Jurnal Kelautan Tropis Aceh Journal of Animal Science JURNAL ENGGANO Jurnal Sumberdaya Akuatik Indopasifik JFMR (Journal of Fisheries and Marine Research) Omni-Akuatika Jurnal Resolusi Konflik, CSR dan Pemberdayaan (Jurnal CARE) Jurnal Perikanan Universitas Gadjah Mada Jurnal Ilmu Kelautan Kepulauan Jurnal Kebijakan Perikanan Indonesia Jurnal Laot Ilmu Kelautan International Journal of Marine Engineering Innovation and Research Jurnal Risalah Kebijakan Pertanian dan Lingkungan Hydrogen: Jurnal Kependidikan Kimia Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Policy Brief Pertanian, Kelautan, dan Biosains Tropika Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Fisheries & Marine E-Amal: Jurnal Pengabdian Kepada Masyarakat
Beginer Subhan
Departemen Ilmu Dan Teknologi Kelautan, Fakultas Perikanan Dan Ilmu Kelautan Institut Pertanian Bogor (IPB), Bogor 16680
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Phytoplankton in Eutrophic Waters of Hurun Bay: An Examination of Composition Patterns, Structure, and Impacts on Aquatic Ecosystems Maestro Munru; Meutia Samira Ismet; yoman Metta N Natih; Beginer Subhan; Nasrul Aziz
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 3 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i3.4917

Abstract

Ecological conditions are shifting due to increased anthropogenic activities along coastal areas. These activities are affecting the life cycle of aquatic organisms, especially phytoplankton. This study, conducted in the unique ecosystem of Hurun Bay Lampung, aims to analyze the composition and structure of phytoplankton communities in eutrophic waters and water quality conditions. Sampling was conducted in two different months, August and October, by vertical hauling from a depth of 5 meters to the surface. The results revealed a rich diversity of phytoplankton, with 72 genera, 48 families, and 6 classes identified in August, and 55 genera, 42 families, and 6 classes identified in October. The diatom group was the most prevalent, accounting for over 90% of the total, with the highest abundance found in Skeletonema and Chaetoceros. The diversity, uniformity, and dominance indices were all in the low to medium category, indicating a balanced ecosystem.
Mapping and validation of spatial algorithm for monitoring turbidity of seagrass habitat using sentinel-2B imagery in Ternate Island Rustam Effendi Paembonan; Dietriech Geoffrey Bengen; I Wayan Nurjaya; Syamsul Bahri Agus; Nyoman Metta N Natih; Beginer Subhan; Joko Santoso
Depik 2025: Special Issue ICMF
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46989

Abstract

Turbidity is a parameter of the marine environment that greatly affects the condition of seagrass whose habitat is an intertidal zone in shallow sea waters. Seagrass is an important type of ecosystem that can be found in several coastal areas of Ternate Island. This study aims to analyze the turbidity conditions of seagrass habitat waters and apply a remote sensing algorithm using Sentinel 2B images. The turbidity research method was carried out by field measurements. The turbidity algorithm model used refers to references with mathematical equations (Rrs665-0.014)/0.013, and the development of a new algorithm as a comparison algorithm. Both algorithms were validated with field data to determine the level of accuracy using the Normalized Mean Absolute Error (NMAE) and determination coefficient (R2). The results were obtained from turbidity data with values ranging from 0.3 NTU to 1.5 NTU with an average value of 0.87 0.45 NTU. The Sentinel 2B image in this study was restored with geometric corrections, atmosphere, radiometric digital values, land masking, and sun glint. The turbidity algorithm model used obtained good accuracy in mapping and monitoring the turbidity of seagrass habitat waters on Ternate Island. The application of the turbidity algorithm used as a reference in this study has an NMAE value of 50.44 and R2 of 0.8822, while the newly discovered turbidity algorithm has an NMAE value of 29.38 and R2 of 0.8827.Keywords:remote sensingecosystemscoastalsedimentationNorth Maluku
Preliminary study oceanography and environmental parameters of habitat endemic species Halmahera walking shark (Hemiscyllium halmahera) on Indopacific Ocean Area in North Maluku Indonesia Nyoman Metta N Natih; Nebuchadnezzar Akbar; Dietriech G Bengen; I Wayan Nurjaya; Riyadi Subur; Abdurrachman Baksir; Firdaut Ismail; Iswandi Wahab; Dondy Arafat; Rustam E Paembonan; Abdul Ajiz Siolimbona; Rasidi Rasidi; Asep Sandra Budiman; Beginer Subhan
Depik 2025: Special Issue ICMF
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46913

Abstract

The Halmahera Walking Shark (Hemiscyllium halmahera) is an endemic species in the Halmahera Sea. Information related to the environment in general has not been described in a complex manner. The environment is the main factor to support the life of biota. Environmental characteristics are a determining factor in the sustainability of biota. The study aims to provide information related to the physical environment of the habitat of the H. halmahera species. Primary data collection was carried out directly (in situ). Current data was taken using the Lagrange method using a currents drogue. Tides using tidal palms and observed for 24 hours. Secondary data was taken from Marine Copernicus and the Geospatial Information Agency (BIG). All data were tabulated and analyzed by Ocean Data View (ODV) software. The results of the study found that the surface current velocity was found to be in the fast current category. Current speed descriptively provides information on the life of H. halmahera. Primary data shows that the direction of the surface current moves to the east and north. Secondary data in vertical distribution shows weak zonal and meridional current shifts. The tidal pattern was found to be two high and low tides (semidiurnal). The distribution of surface temperature was found to be around 30-32oC. The vertical temperature profile found three layers, namely 1-13m (30oC), 65m (25oC) and 71m (20oC). The chemical environment showed all normal variables. The physical and chemical environmental conditions support H. halmahera to inhabit the sea area of Morotai Island. The environmental description has provided a brief understanding of how the ecological role of the H. halmahera species. Management and sustainability of the environment in the future due to climate change can be done with information on habitat characteristics.Keywords:coral triangleHalmaheranicheNorth Malukutropical
Condition and zonation of mangrove ecosystems in the small islands around the area crossed by the equatorial line of North Maluku Province Najamuddin Najamuddin; Abdurrachman Baksir; Nebuchadnezzar Akbar; Firdaut Ismail; Abdul Ajiz Siolimbona; Dondy Arafat; Rustam E Paembonan; Raismin Kotta; Beginer Subhan; Irmalita Tahir; Nyoman MN Natih; Eko S Wibowo; Ikbal Marus; I Wayan Nurjaya; Dietriech Geoffrey Bengen
Depik Vol 13, No 2 (2024): AUGUST 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.2.32075

Abstract

The South Halmahera Islands feature a comprehensive marine coastal ecology. The ecosystems found were seagrass, mangrove and coral reef ecosystems. The components that sustain the existence of this ecosystem are employed equitably because of its geographical location on the equator. Mangrove ecosystems that provide benefits directly and indirectly to the community. The purpose of this study was to determine the condition of the mangrove ecosystem based on the hemispherical photography method and the type of zonation. Tawabi Island, Kayoa, South Halmahera Regency served as the site of the equator research. The research station is determined as many as 3 stations. Mangrove percent cover canopy using the hemispherical photography and transect quadrant for density. Field data gathering procedures with transects drawn perpendicular from the sea to the land. Zonation characteristics and thickness using zone tracking. Density mangrove using ecology analysis and zonation using canvas 9.0. The results of the research founded were Rhizophora apiculata, Rhizophora mucronata and Sonneratia alba. Mangrove percent cover canopy were good category (75-81%), where station I (75%), station II (81%) and station III (77%). Station I having 600 trees per ha, station II having 500 trees per ha, and station III having 400 trees per ha (low density category). Mangroves were found in 3 zones Sonneratia alba, Rhizophora apiculata and Rhizophora mucronata. The mangrove thickness from sea to land at station I (65 meters), station II (69 meters) and station III (42 meters).Keywords:biodiversitycoastalequator lineHalmaheratropical
Effective DNA extraction method for metagenomic analysis of rhizosphere bacteria from mangrove sediments Siti Maysaroh; Meutia Samira Ismet; Beginer Subhan; Rita Andini; Enny Rimita Sembiring; Nurlita Putri Anggraini
Depik Vol 12, No 2 (2023): AUGUST 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.2.32850

Abstract

Mangrove, Rhizophora mucronata, grows in the intertidal area, which contains much organic matter and varying salinity. The organic matter content is influenced by the bacterial community that inhabits the ecosystem, but information regarding the bacterial community, especially in the mangrove root system, is not widely available. There are several challenges in completing this information, one of which is that the method used is still in a conventional form. Developments in environmental DNA analysis can support and complement this information. However, this method must be optimized because the organic matter content and salt variations affect the extraction results. Thus, this study aimed to determine the optimal approach for extracting bacterial DNA from mangrove sediments. The analysis used two methodologies: manual DNA extraction techniques based on buffer modification and DNA extraction kits. There were four different treatments, namely the soil DNA isolation plus kit (M1), the fecal / soil microbial quick-DNA miniprep kit (M2), glass powder with charcoal (M3), and glass powder with skimmed milk (M4). DNA samples were obtained from each method and assessed for concentration and purity using a nanodrop. In addition, the resulting DNA's quality was analyzed using 1.5% agarose. The results obtained were in the M2 treatment, which showed optimal results compared to the others. M2 uses a bead-based beating and spin column method to achieve optimal DNA concentration through high molecular weight. The DNA obtained was also protein-free, and several samples were contaminated with humic acid, namely KL.S1, KL.S4, and T7.S4.Keywords:Bacteria 16SBead beatingDNA ExtractionSedimentSpin column
Morphological identification of the soft coral, Clavularia inflata, reveals different sclerite characters across Indonesian coral reefs Subhan, Beginer; Bengen, Dietriech G; Ferse, Sebastian; Dzulfannazhir, Fauzan; Anggraini, Nurlita Putri; Santoso, Prakas; Arafat, Dondy; Sani, Lalu M. Iqbal; Prehadi, Prehadi; Madduppa, Hawis
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.2.22102

Abstract

Soft corals of the genus Clavularia (Blainville 1830) have complex and difficult to distinguish morphological characteristics, making them rather difficult to identify. A paucity of information exists for Indonesian coral reefs, a complex biogeographic region at the confluence of the Pacific and Indian Ocean that covers an extensive geographic area and several marine ecoregions, is subject to several ocean current systems, and includes a high diversity of habitats. Specimens of Clavularia inflata were collected from eleven study sites across the Indonesian archipelago, morphologically described based on their sclerite characteristics, and compared among sites. Sclerite observations were divided into four parts for each colony, namely pinnules, crowns, calyces, and stolons. The sclerites found in C. inflata comprised various forms such as rods, fingers, sticks, and brackets. Morphometric measurements of C. inflata showed specimens from Kepulauan Seribu had the largest pinnule, calyx, and stolon sclerites compared to other locations. The maximum mean size of crown sclerites was observed for specimens from Maluku Tenggara Barat. Similarities in the shape of sclerites resulted in specimens from Kangean, Morotai, Tanjung Lesung, Bontang, Lombok and Natuna forming a cluster, while those from Maluku Tenggara Barat and Arborek were dissimilar to other sites. Smaller sclerite sizes in specimens from Arborek are likely related to strong currents at that site. In conclusion, there were variations in the size of sclerites across the eleven study sites, with several sites forming a cluster of similar sclerite dimensions. Further studies using molecular markers are suggested to further explore the possibility of cryptic species.
Co-Authors Abdul Motalib Angkotasan Abdurrachman Baksir Abdurrachman Baksir Abdurrachman Baksir Abdurrachman Baksir, Abdurrachman Abjan Ibrahim, Abjan Achmad, Muhammad Janib Adewal, Murad Alvian K Aditya Bramandito ADRIANI ADRIANI Adriani Sunuddin Afiff , Usamah Agus Ramli Ahmad Eko Suprianto Ahmad Taufik Ghozali Ahmad Taufik Ghozali Aisyah, Siti Zanuba Aji Wahyu Anggoro Alan Frendy Koropitan Ali Mashar Aliati Iswantari Alla Asmara Am Azbas Taurusman Andhika Prima Prasetyo Andrianus Sembiring Anggi Mayulina Daulay Anggraini, Nurlita Anggraini, Nurlita Putri Anwar, Muhammad Fathur Aradea Bujana Kusuma Aradea Bujana Kusuma Ardan Samman Arif Miftahul Aziz, Arif Miftahul Ario Damar Asadatun Abdullah Asep Sandra Budiman Asep Sandra Budiman, Asep Sandra Ayu Ervinia Ayu, Inna Puspa Aziz, Nasrul Bashari, Muhammad Hasan Benyamin, Azhari Bertoka Fajar S.P. Negara Borbee, Erin Budi Prabowo Citra S. U. Dewi Citra Satrya Citra Satrya Utama Dewi Dea Fauzia Lestari, Dea Fauzia Dedi Soedharma Dedi Soedharma Denny Khaerudi Dewi, Citra Satrya Utama Diah Ayuningrum, Diah Dian Pertiwi Dietrich Geoffrey Bengen Dietrich Geoffrey Bengen Dietriech G Bengen Dietriech Geoffrey Bengen Dondy Arafat Dondy Arafat Dwi Yuni Wulandari Dzulfannazhir, Fauzan E Paembonan, Rustam Efahmi, Efahmi Eko S Wibowo Eko S Wibowo Elfahmi Elfahmi, Elfahmi Elok Faiqoh Endang Sunarwati Srimariana Enny Rimita Sembiring Fadel Muhammad Fadhilah Rahmwawati Fadillah Rahmawati Fahlevi, Arief Reza Fajar Maulana . Fauzan Dzulfannazhir Fauzan Dzulfannazhir Febriantika, Putri Fenetiruma, Syamsudin Ferse, Sebastian Firdaut Ismail Firdaut Ismail Firdaut Ismail Firdaut Ismail Firsta Kusuma Yudha Gelis, Ester R. E. Genadi Algadri Hardianti, Aprilia Hari, Restu Fajar Hawis H Madduppa Herettrenggi, Rosa Hermansyah Amir, Hermansyah Husna, Alief K I Wayan Nurjaya Idham A. Nasrullah Ikbal Marus Ikbal Marus Ikbal Marus, Ikbal Ilham, Yuwanda Inna Puspa Ayu Irianda, Nadya Jeny Irmalita Tahir Irmalita Tahir Irmalita Tahir, Irmalita Irnin Agustina Dwi Astuti Islami, Nurfara Ismail, Firdaut Iswandi Wahab Iswandi Wahab Jansit, Afifah F. Jeddah Isnul Jhoni Wahyu Adi Joko Santoso Junaedy, Ahmad Kahar, Fauzi Abdul Karizma Fahlevy Khairudi, Denny Kintani, Novia Indah Kotta, Raismin Kusumarani, Dheni Lalu M. Iqbal Sani Lalu M. Iqbal Sani Lane, Christopher Luzmi Malia Izza Maestro Munru Mai Efdi Majariana Krisanti Malaihollo, Jantje Jacobus Manafi, Efi Noferya Mas Irfanto Masyerli, Scify Bilqis Nawafi Meutia Samira Ismet Minsaris, La Ode Alam Miswandi, Muhammad Mochamad Untung Kurnia Agung Mohamad Gazali Mohammad Mukhlis Kamal Muhamad Gilang Arindra Putra Muhamad Gilang Arindra Putra Muhamad Iqbal Muhammad Iqbal Muhammad Janib Achmad Muhammad Taufik Muhammad Yusuf Muhandis Shidqi Munru, Maestro Mutmainnah Mutmainnah Muttaqin, Ahmad Sabilul Mu’min Mu’min N Natih, Nyoman Metta N, Furqan Nadya Cakasana Nadya Jeny Irianda Najamuddin Najamuddin Najamuddin Najamuddin, Najamuddin Nasrul Aziz Nebuchad Nezzar Akbar Nebuchadnezzar Akbar Nebuchadnezzar Akbar Neviaty P. Zamani NEVIATY PUTRI ZAMANI Ni Kadek Dita Cahyani, Ni Kadek Dita Niken TM Pratiwi Ningtyas, Azizah Lutfia Nor Jannah, Nor Novriyandi Hanif Nur Ari Bayu Nurlisa Alias Butet Nurlita Anggraini Nurlita Putri Anggraini Nurlita Putri Anggraini Nurlita Putri Anggraini Nyoman M N Natih Nyoman Metta N Natih Paembonan, Rustam E Prakas Santoso Prakas Santoso Prakas Santoso Prakas Santoso Prehadi . Prehadi Prehadi Prehadi, Prehadi Purwanto, Budi Rachma ati, Rita Rahamadya, Aldiano Rahimah, Insaniah Rahman Rahman Rahmat Hidayat Rahmat, Fadhlan Basiluddin Raismin Kotta Ramadian Bachtiar Ramili, Yunita Rani Utari Ayuningtyas Rasidi Rasidi Rasidi, Rasidi Raunsai, Jhoni Elias Raweyai, Oktofianus Obaja Restu, Yunan Gilang Ridha Fathihatunnisa RITA ANDINI Rita Andini Rita Andini Riyadi Subur, Riyadi Rommy M. Abdullah Rotinsulu, Dordia Anindita Rustam E Paembonan Rustam E Paembonan Rustam E Paembonan Rustam E Paembonan Rustam Effendi Paembonan Rustam Effendi Paembonan, Rustam Effendi Ryan Adhitia Muslim Safika S, Safika Samira Ismet, Meutia Samsuardi Samsuardi, Samsuardi Sani, L. Mukhsin Iqbal Sani, Lalu M Iqbal Sani, Lalu M. Iqbal Sani, Lalu Mukhsin Iqbal Santoso Budi Widiarto Santoso, Prakas Satya Pratama Atmaja Sebastian C. A. Ferse Sebastian Ferse Sembiring, Enny Rimita Setiamarga, Davin H. E. Siolimbona, Abdul Ajiz SITI KHODIJAH Siti Maysaroh Siti Maysaroh Siti Maysaroh Sombo, Hendrik Sukandar Sukandar Sukandar, Mr. Syafrizayanti, Syafrizayanti Syahid Syamsul Bahri Agus, Syamsul Bahri Tumpak Sidabutar Ulandari, Rafika Wahab, Iswandi Wedi Andika Wibowo, Eko S Wibowo, Eko Setyobudi Wiwid Andriyani Lestariningsih Yahya, Rodhiyah Yennafri, Yennafri Yidoatimojo, Sudibyo Yoga Budi Bhakti yoman Metta N Natih Yosie Andriani Yuliana Fitri Syamsuni Yusli Wardiatno Zamani, Nevyati P. Zedta, Raymon Rahmanov Zulham Apandy Harahap Zulhan Arifin Harahap