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All Journal AQUATIC SCIENCE & MANAGEMENT JURNAL PESISIR DAN LAUT TROPIS JURNAL ILMIAH PLATAX ILMU KELAUTAN: Indonesian Journal of Marine Sciences Journal of Indonesian Tourism and Development Studies JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI JURNAL PENDIDIKAN TAMBUSAI Juvenil: Jurnal Ilmiah Kelautan dan Perikanan AGRI-SOSIOEKONOMI Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Fisheries & Marine Biodiversitas Journal of Biological Diversity
Rene Charles Kepel, Rene Charles
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Social Sciences

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Sustainability-Based Mangrove Ecotourism Management Strategy Using ADO-ODTWA and MDS Approaches: A Case Study of Ngusulenge Mangrove Area, Maitara Island, Indonesia Salim Abubakar; Rina; Irmalita Tahir; Rene C. Kepel; Yusri Sapsuha; Andy Kurniawan; Riyadi Subur; Faizal Rumagia
Jurnal Ilmiah Perikanan dan Kelautan Vol. 18 No. 2 (2026): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v18i2.81480

Abstract

Graphical Abstract Highlight Research The mangrove ecosystem on a small island is the object of this research. The Ngusulenge mangrove area in Maitara Tengah Village is worthy of development as a sustainable ecotourism destination with a medium to high attractiveness value based on ecological and accessibility aspects. Dimensionally, the social dimension has the highest sustainability value compared to the other dimensions. However, all dimensions require more serious improvement efforts to meet the needs of developing a mangrove ecotourism area on Maitara Island. Collaboration between stakeholders, supported by clear regulations regarding the management of mangrove ecotourism areas, will accelerate regional development and improve the welfare of communities involved in the management and utilization of coastal ecosystems and small islands.   Abstract Sustainable mangrove ecotourism requires a balanced focus across ecological, economic, and social dimensions to ensure long-term conservation and community benefits. In line with the concept of sustainability, the development of mangrove ecotourism must prioritize tourist attractions, local community involvement, and environmental conservation. This study assessed tourism feasibility and multidimensional sustainability of Ngusulenge mangrove ecotourism using ADO-ODTWA and Rap-Mforest using interdisciplinary approach for sustainable mangrove ecotourism management. This study employs an interdisciplinary approach to sustainable ecotourism management, utilizing ADO-ODTWA analysis to assess tourist attractions and the feasibility of ecotourism development, and to identify potential tourist attraction resources. Additionally, it employs Rap-Mforest analysis to measure the sustainability status of ecotourism in ecological, social, economic, and institutional aspects. The results of the study indicate that the Ngusulenge mangrove area in Maitara Tengah Village shows potential as a sustainable ecotourism destination with medium to high attraction values based on ecological and accessibility aspects with an ADO-ODTWA index value (82.44%) indicating suitability for development, while the multidimensional sustainability index value (41.60%) falls into the less sustainable category, but requires major interventions in several factors, such as cleanliness, accommodation, and socio-economic management, to overcome the challenges of mangrove ecosystem degradation. The lowest feasibility factor value was found in the Accommodation criterion (58.33%), and the lowest value for the sustainability dimension was found in the Institutional dimension (37.07%). The collaboration between the government, the community, and regulations needs to be strengthening, enabling the potential of the Ngusulenge mangrove area to become a tourism-based conservation model that potentially supports coastal biodiversity, local empowerment, and inclusive economic growth in North Maluku Province. Institutional weakness indicates the need to strengthen government–community coordination and local regulations.
First DNA Barcoding Records of Fish Species from Totok and Makalo Estuaries, North Sulawesi, Indonesia Febry Susane Ivonne Menajang; Ari Berty Rondonuwu; Alex Denny Kambey; Rene Charles Kepel
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.31.1.61-70

Abstract

The Totok and Makalo River estuaries in North Sulawesi, Indonesia, serve as vital habitats teeming with fish biodiversity, supporting coastal ecosystems and local fisheries. This study aimed to identify fish species and elucidate their genetic relationships through DNA barcoding of the Cytochrome Oxidase I (COI) gene. Fish samples were collected from both estuaries using nets and traps, followed by molecular analysis involving polymerase chain reaction (PCR) amplification and Sanger sequencing. The results confirmed the presence of 11 fish species, including Osteomugil engeli, Polydactylus plebeius, and Gazza minuta, with high identification accuracy (over 98% sequence similarity to reference databases). Notably, Paracentropogon rubripinnis and Nematalosa come were recorded for the first time in North Sulawesi waters, expanding the known distribution of these species. Significant genetic variation was detected in P. rubripinnis, potentially indicating cryptic speciation or local adaptation to environmental gradients. Phylogenetic analysis revealed close genetic affinities between certain species and populations from Taiwan and Bangladesh, suggesting historical migration patterns or shared ancestry, possibly facilitated by ocean currents. These findings underscore the rich genetic diversity in these estuaries, which are influenced by factors like salinity, temperature, and anthropogenic pressures. The study emphasizes the urgency of conservation strategies, including habitat protection and sustainable fishing practices, to preserve biodiversity and maintain ecosystem services. By providing baseline data on species composition and genetic connectivity, this research contributes to broader efforts in marine biodiversity monitoring and informs policy for coastal management in Indonesia's biodiversity hotspots. 
Sustainability status of ecotourism-based seagrass ecosystem management on Maitara Island. Indonesia Salim Abubakar; Rina Rina; Riyadi Subur; Rene C Kepel; Sunarti Sunarti; Rugaya H Serosero; Yuyun Abubakar; Nebuchadnezzar Akbar; Najamuddin Najamuddin; M. Janib Achmad; Ariyati H. Fadel; M. Said Al Hadad; Raut Nugrahening Widhi; Raut Wahyuning Paluphi
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.0.0.47064

Abstract

Seagrass ecotourism is a tourism activity based on seagrass ecosystem as an educational tour by seeing the ecology of seagrass meadows and associated biota. Conservation awareness and improving community welfare, seagrass ecotourism is a nature-based tourism strategy with the aim of environmental conservation and containing aspects of community education and culture. Determining the sustainability status of seagrass ecosystem management is very important as a basis for future policy planning. The sustainability of seagrass ecosystems needs to be protected, so a policy strategy is applied in sustainable seagrass ecosystem management. The objectives of the study are: 1) determining the sustainability status of ecotourism-based seagrass ecosystem management based on ecological, economic and social dimensions, 2) determining the policy strategy for ecotourism-based seagrass ecosystem management. The results of the study obtained the sustainability status of ecotourism-based seagrass ecosystem management based on ecological dimensions is quite sustainable while the economic and social dimensions are less sustainable. The strategy for sustainable policy for managing seagrass ecosystems based on ecotourism on Maitara Island, Tidore Islands, namely education about seagrass ecosystems for the community, managing seagrass ecosystems based on ecotourism, increasing seagrass rehabilitation programs, maximum limits for carrying capacity of seagrass ecotourism, training for developing managers of seagrass ecotourism based on ecosystems, increasing job opportunities and business opportunities, legality of seagrass areas as conservation areas in the tourism utilization zone category and strengthening laws and institutions.Keywords:analysismultidimensionalsmall islandsustainabilitytourism
Morphometric and genetic variations of species composers of nike fish assemblages in Gorontalo Bay Waters, Indonesia Femy M. Sahami; Rene Charles Kepel; Abdul Hafidz Olii; Silvester Benny Pratasik; Ridwan Lasabuda; Adnan Wantasen; Sitty Ainsyah Habibie
Biodiversitas Journal of Biological Diversity Vol. 21 No. 10 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d211015

Abstract

Abstract. Sahami FM, Kepel RC, Olii AH, Pratasik SB, Lasabuda R, Wantasen A, Habibie SA. 2020. Morphometric and genetic variations of species composers of nike fish assemblages in Gorontalo Bay Waters, Indonesia. Biodiversitas 21: 4571-4581.  Nike is Gobioidei fish at the post-larval and juvenile stages whose habitat is still in seawater before they migrate to the freshwater, grow up, and spawn to fulfill their life cycle as an amphidromous species. This study aims to identify the species composers of Nike fish in Gorontalo Bay waters based on their morphometric and molecular characters. 2,523 samples were collected from the catches of fishermen during three periods of their appearance in Gorontalo Bay waters from January to March 2019. The samples were grouped based on their similarity of melanophore patterns, and morphometric characters of 10 units were then measured. This study found 20 different groups of melanophore patterns; 15 of them were new melanophore patterns. DNA samples from each group of new melanophore patterns were then isolated for molecular analysis. The morphometric analysis grouped the 20 melanophore patterns into three separate clusters that were confirmed through molecular analysis. The results of Gen Cytochrome Oxidase I (COI) sequences indicate that the new melanophore patterns of Nike fish assemblages consisting of six species; five species in the Gobiidae family (i.e. Sicyopterus parvei, S. cynocephalus, S. longifilis, S. lagocephalus, and Stiphodon semoni) and a species in the Eleotridae family (Belobranchus belobranchus).
Co-Authors Abdul Hafidz Olii Abdul Latief Abadi Abdul Latief Abadi Abubakar, Salim Achmad, Febrio V. Adnan Sjaltout Wantasen Adnan Wantasen Adnan Wantasen Adrian, Melinda Margareta Alex D. Kambey Alex D. Kambey Alex Denny Kambey Andy Kurniawan Anneke V. Lohoo ANTONIUS PETRUS RUMENGAN Ari Berty Rondonuwu Ariyati H. Fadel Bilaleya, Iman Billy J. Kepel Calvyn F. A. Sondak, Calvyn F. A. Carolus P. Paruntu Chatrien A. L. Sinjal Darus S. Paransa Deiske A. Sumilat Deiske Adeliene Sumilat, Deiske Adeliene Edwin D Ngangi Engel V. Pandey Faizal Rumagia Farnis B. Boneka Febry Susane Ivonne Menajang Femy M. Sahami Flora Pricilla Kalalo Fransine B. Manginsela Fransiscus Rori Gabriel F. Tulung Gaspar D. Manu, Gaspar D. Gaspar Duhar Manu Grevo S Gerung Hadath, Deandra Starsha Bianca Handayani, Maymanah Haryani Sambali Hengki Djemie Walangitan Hengky J Sinjal Hermanto W. K. Manengkey Irmalita Tahir Irwan Baino Iyanleba, Jonathan Yohanes Jane M. Mamuaja Jane Sulinda Tambas Jety K. Rangan John L. Tombokan Joshian Nicolas William Schaduw Joudy R.R. Sangari, Joudy R.R. Kandati, Feibe R. S. Katiandago, Theodora Maulina Khristin I. F. Kondoy, Khristin I. F. Kliwon Hidayat Kliwon Hidayat Kondoy, Khiristin Ivone Fisye Kristianto Parera, Kristianto Lalita, Jans Laurence J. L Lumingas Lawrence J. L Lumingas Lawrence J. L. Lumingas Lawrence J.L Lumingas Lawrence J.L. Lumingas, Lawrence J.L. Leonardus Ricky Rengkung Leslida, Ayu Lumingas, Lawrence J. M. Janib Achmad M. Said Al Hadad Mamonto, Riswanto Mandagi, Stephanus V. Mandagi, Stephanus Vianny Mantiri, Desy M. H Mantiri, Rose O.S.E Medy Ompi Menajang, Febry S. I. Menajang, Febry Susana Ivone Muhammad Aris Najamuddin Najamuddin Namoua, Dilivia J. Nasprianto, - - Nasprianto, . Natalie D. C. Rumampuk Nebuchadnezzar Akbar Nickson J. Kawung, Nickson J. Ockstan Kalesaran Onibala, Hernie Pakasi, Ivone F Patra, Frian Paulus, James Paulus, James J. H Pelle, Wilmy Preisy Meicy Meriam Watung Rafii, Keken Angliyana Rangan, Jety Rangan, Jety K. Rangan, Jety Kornela Raut Nugrahening Widhi Raut Wahyuning Paluphi Resya Ika Firmansyah Rey Wahyudi Simbala Richardo O. Roring Ridwan Lasabuda Ridwan Lasabuda Rignolda Djamaluddin Rina Rina Rina Rini M Wowor Riyadi Subur Riyadi Subur, Riyadi Robert A. Bara Ronald S. A. Posundu Rondonuwu, Arie B Rose O. S. E. Mantiri, Rose O. S. E. Rose O.S.E. Mantiri Royke M. Rampengan Rugaya H Serosero Rumengan, Anton Salaki, Meiske Sofie Salim Abubakar Silvester B Pratasik Silvester Benny Pratasik Sinjal, Hengk Sitty Ainsyah Habibie Stephanus V. Mandagi Stephanus V. Mandagi Stephanus V. Mandagi Sujono, Riskezia Y Sunarti Sunarti Suria Darwisito Suzanne L Undap Suzanne L. Undap Tamara, Giovanni Matthew A. J. Tambas, Jane Sulinda Tamrin Tamrin Tamrin Tassi, Maltonius Taufiq Abdullah Tawaluyan, Marthen Hansen Tilaar, Ferdinand F. Tombokan, John Leonard Turangan, Septiara Vivanda O.J. Modaso Wahidin, Nurhalis Wakkary, Paramitha G. Winda M. Mingkit Winda Mercedes Mingkid Yusri Sapsuha Yuyun Abubakar