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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 BIOTROPIA - The Southeast Asian Journal of Tropical Biology Maspari Journal Jurnal Penelitian Hutan Tanaman Jurnal Kelautan : Indonesian Journal of Marine Science and Technology 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 MAJALAH ILMIAH GLOBE Jurnal Bina Praja BULLETIN OF THE MARINE GEOLOGY Marine Research in Indonesia Biosaintifika: Journal of Biology & Biology Education Indonesian Aquaculture Journal Jurnal Kebijakan Perikanan Indonesia Jurnal Segara Jurnal Sosial Ekonomi Kelautan dan Perikanan Jurnal Kebijakan Sosial Ekonomi Kelautan dan Perikanan Buletin Ilmiah Marina : Sosial Ekonomi Kelautan dan Perikanan JURNAL PERIKANAN TROPIS Asian Journal of Aquatic Sciences Makara Journal of Science Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Dietriech Geoffrey Bengen
Department Of Marine Science And Technology, Faculty Of Fisheries And Marine Science, Bogor Agricultural University, Academic Ring Road, Campus IPB Dramaga, Bogor, Indonesia 16680
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Physics Social Sciences Veterinary Other

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DETECTING GROUPER (EPINEPHELINAE) DIET COMPOSITION AND PREY AVAILABILITY IN RAJA AMPAT CORAL REEFS THROUGH DNA AND eDNA METABARCODING Madduppa, Hawis; Bengen, Dietriech Geoffrey; Ayu, Inna Puspa; Subhan, Beginer; Sani, Lalu M Iqbal; Prabowo, Budi
BIOTROPIA Vol. 30 No. 1 (2023): BIOTROPIA Vol. 30 No. 1 April 2023
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2023.30.1.1608

Abstract

Gaining extensive knowledge of prey sources is an essential approach for understanding trophic structure and relationships, especially in highly diverse coral reef ecosystems. Groupers are a major Asian reef fish commodity, making it important to study grouper prey and the trophic relations involved. The wide distribution of groupers across different environments could lead to distinctive predatory behaviour. Therefore, this study was conducted to investigate and compare the taxonomic classification and composition of prey in the diets of two common groupers (Epinephelus areolatus and E. malabaricus) based on DNA metabarcoding of stomach contents and potential prey detection using environmental DNA tools at sites in the coral reefs of Raja Ampat, Indonesia. DNA recovered from the water column comprised taxa from the Arthropoda, Chordata, Cnidaria and Mollusca, several of which were also found in grouper guts, with Cnidaria the most abundant class. Diversity was high for potential prey species in the environment and prey consumed by each grouper species. The high overlap in prey identified from gut contents indicates these two epinephelids have a similar feeding strategy. However, nMDS ordination showed segregation between the prey consumed by each species and potential prey available in the environment. The results indicate a low likelihood of competition between the two grouper species, related to the abundance and wide choice of potential prey in the highly biodiverse Raja Ampat coral reef ecosystem.
Presenting identification keys and future study on seagrass Halophila major in Indonesia Darus, Robba Fahrisy; Bengen, Dietriech Geoffrey; Zamani, Neviaty Putri; Ismet, Meutia Samira
Depik Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.44166

Abstract

Halophila major is a new species with a wide distribution across various regions in Indonesia. The species was identified in 2020 through a combination of morphology and molecular approaches. Several studies have shown that it has a similar morphology to H. ovalis, which causes significant confusion during identification. Therefore, this study aims to describe the key identification and habitat of H. major and summarize seagrasses study opportunities based on the trend of published articles. A bibliometric analysis was used to summarize the habitat, morphometrics, molecular confirmation, and trend of seagrass topics in Indonesia. Based on the scientific articles, H. major has bigger morphometrics than H. ovalis. In addition, the number of paired and branching cross veins was reported to be an identification key of H. major. The species was also considered a deep ovalis found in 2-4 m depth. Genetically, the Internal Transcribed Spacer (ITS) gene marker was appropriate to showits phylogenetic tree. H. major was also classified into different clades with H. ovalis due to various factors. The results showed that genetics, tourism, and restoration were topics with the potential to be explored in the future. This study recommended collaborating in multi-institution to transfer knowledge, technologies, and project arrangements for seagrass exploration.Keywords:BibliometricHalophilaMarine angiospermaeMarin plantRediscoverySpecies
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
Co-Authors . Ahyar . Chaidir . Suharsono Abdul Ajiz Siolimbona Abdul Ajiz Siolimbona Abdul Harim Abdullah Hisam bin Omar Abdurrachman Baksir Abdurrachman Baksir Abdurrachman Baksir, Abdurrachman Abimanyu Takdir Alamsyah Abrahamsz, Jodie G. Achmad Fahrudin Achmad Fahrudin Achmad Fahrudin Achyani, Ratno Aditya Hikmat Nugraha ADRIANI ADRIANI Afdal Afdal, Afdal Agung Putra Utama Agus Atmadipoera Agus Sholeh Atmadipoera Agustin Rustam Ahmad Najid Al Azhar Al Azhar Alan Frendy Koropitan Alimudin Laapo An Nisa Nurul Suci Andhika Prima Prasetyo Andi Irwan Nur, Andi Irwan Angela Mariana Lusiastuti Anggi Mayulina Daulay Anna Ida Sunaryo Purwiyanto Arief Pratomo, Arief Arif Satria Ario Damar Arisandi, Defrian Marza Ariston, Muhamad Asep Sandra Budiman Asep Sandra Budiman, Asep Sandra Audina Putri Awal . Subandar, Awal . Awal Subandar Ayu, Inna Puspa Beale, Calvin S. Beginer Subhan Bintal Amin Bintang Prayoga Budi Hascaryo Iskandar Budi Prabowo Budy Wiryawan Burhanis Burhanis Chaidir Chaidir Dafit Ariyanto David Smith Dedi Soedharma Dondy Arafat Efriyeldi, Efriyeldi Ekawati Sri Wahyuni Eko S Wibowo Erlania Erlania Etty Riani Eva Anggraini Faisal Hamzah Fauzan Dzulfannazhir Ferawati Runtuboi Ferdinan Yulianda FERY KURNIAWAN Firdaut Ismail Firdaut Ismail Franto Novico Fredinan Yulianda Gede Iwan Setiabudi Hanif Budi Prayitno Hari, Restu Fajar Harpasis Slamet Sanusi Hawis H Madduppa Hefni Effendi Hilda Zulkifli Hilda Zulkifli Hilda Zulkifli I Wayan Nurjaya I Wayan Nurjaya Idris Idris Ikbal Marus Ikbal Marus, Ikbal Ilham, Yuwanda Indri Manembu Ira Dillenia Irma Akhrianti Irmalita Tahir Irmalita Tahir, Irmalita Isdradjad Setyobudiandi Isdradjad Setyobudiandi Ismail, Firdaut Isni Nurruhwati Iswandi Wahab John Haluan John I Pariwono Joko Santoso Joshian N.W. Schaduw Juraij Juraij Kadarwan Soewardi Kahar, Fauzi Abdul Kotta, Raismin Kurdi Gunawan Lalu M. Iqbal Sani Leni Maryani Lieng, Lieng LILIK BUDIPRASETYO Luhulima, Yunita Luky Adrianto Luzmi Malia Izza Mai Suriani Majariana Krisanti Manafi, Efi Noferya Maret Priyanta Martini Djamhur Maya F Tamimi Mennofatria Boer Meutia Samira Ismet Michael John Sweet Michael Sweet Miswandi, Muhammad Mudjirahayu Mudjirahayu Muh. Ishak Jumarang Muh. Rasman Manafi Muhammad Agus Muljanto Muhammad Kasnir Muhammad Masrur Islami, Muhammad Masrur Muhandis Sidqi, Muhandis Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe Mulyono S. Baskoro N Natih, Nyoman Metta N, Furqan Najamuddin Najamuddin Najamuddin Najamuddin, Najamuddin Najid, Ahmad Nanda Tiara Diningsih Nebuchadnezzar Akbar Nella Tri Agustini, Nella Tri Neviaty P Zamani Neviaty P. Zamani Neviaty Putri Zamani NEVIATY PUTRI ZAMANI Noferya, Efi Noverita Dian Takarina Dian Takarina Novi Susetyo Adi, Novi Susetyo Novian Prahandhy Kusuma Nuraini Nuraini Nurlisa Alias Butet Nurlita Putri Anggraini Nyoman M N Natih Nyoman M.N Natih Nyoman Metta N Natih Nyoman Metta N. Natih Ocky Karna Radjasa Ofri Johan Ofri Johan Ofri Johan Ofri Johan Paembonan, Rustam E Prakas Santoso R Widodo Rahma Aprilian Rahmat Kurnia Rahmat, Fadhlan Basiluddin Rainer A Troa Raismin Kotta Ramili, Yunita Rasidi Rasidi Rasidi, Rasidi Rastina, Rastina Restu, Yunan Gilang Retraubun, Alex S.W. Riana Faiza Richard J. Stanford Richardus F Kaswadji Richardus F Kaswadji Richardus Kaswadji Richardus Kaswadji RIDWAN AFFANDI Rika Anggraini Riris Aryawati Riris Aryawati Rita Rachmawati Riyadi Subur, Riyadi Robba Fahrisy Darus, Robba Fahrisy Rokhmin Dahuri Roni Bawole Rozirwan . Rudi Febriamansyah Rustam E Paembonan Rustam E Paembonan Rustam Effendi Paembonan, Rustam Effendi Ryan Adhitia Muslim Sadikin Amir Saenudin Safar Dody Salsabila, Afviya Samsuardi Samsuardi, Samsuardi Sani, Lalu M Iqbal Sebastian C. A. Ferse Setyaningsih, Wahyu Adi Setyo Handayani Setyo Pertiwi Simatupang, Candida Putri Nauli Siolimbona, Abdul Ajiz Sonja Kleinertz Subambang, R. Budiono Subhat Nurhakim Suhaemi Suharsono Suharsono Suharsono _, Suharsono Susanto, Handoko Adi Syahrial Syahrial Syamsul Bahri Agus, Syamsul Bahri Taqiyuddin, Muhammad Wijdan Taryono Tengku Zia Ulqodry Tirtama, Wahyu Tri Hartanto Tri Prartono Tridoyo Kusumastanto Try Al Tanto Ummu Salma Unstain NWJ Rembet Vijaya Isnaniawardhani Wahab, Iswandi Wahyudi, A’an Johan Welly, Marthen Welmar Olfan Barat, Welmar Olfan Wibowo, Eko S Wike Ayu Eka Putri Yanelis Prasenja Yennafri, Yennafri Yidoatimojo, Sudibyo Yuli Naulita Yulianto Suteja Yundari, Yundari Yunianto Setiawan, Yunianto Yusli Wardiatno Zamani, Nevianty P Zulfikar, Andi