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DISTRIBUSI DAN STRUKTUR KOMUNITAS MANGROVE DI PULAU DONROTU, GURATU DAN MANOMADEHE KABUPATEN HALMAHERA BARAT, MALUKU UTARA Serosero, Rugaya H.; Abubakar, Salim; Hasan, Said
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 12 No. 1 (2020): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Mangrove merupakan ekosistem yang merupakan habitat bagi berbagai biota perairan maupun di darat. Penelitian yang dilakukan ini bertujuan untuk mengungkapkan distribusi dan struktur komunitas hutan mangrove di Pulau Donrotu, Guratu dan Manomadehe Kecamatan Jailolo Selatan, Kabupaten Halmahera Barat, Maluku Utara. Pelaksanaan penelitian pada bulan April-Juni 2019. Pengambilan data dengan menggunakan metode spot check. Analisis data distribusi mangrove dilakukan secara kualitatif, sedangkan struktur komunitas secara kuantitatif meliputi kerapatan jenis (Di), kerapatan relatif jenis (RDi), frekuensi jenis (Fi), frekuensi relatif jenis (Rfi), penutupan jenis (Ci), penutupan relatif jenis (RCi), Nilai penting (VIi). Hasil penelitian menunjukkan bahwa mangrove jenis Rhizophora stylosa pada ketiga pulau (Pulau Donrotu, Guratu dan Manomadehe) memiliki nilai kerapatan jenis dan kerapatan relatif jenis yang lebih tinggi. Penutupan jenis dan penutupan relatif jenis bervariasi. Jenis R. stylosa juga memiliki nilai penting yang lebih tinggi di ketiga Pulau. Kerapatan mangrove tertinggi ditemukan di Pulau Donrotu (0,96 ind/m2), kemudian Pulau Guratu (0,46 ind/m2) dan Pulau Manomadehe (0,32 ind/m2).

Effect of Sea Surface Temperature and Chlorophyll-a On the Catch of Yellowfin Tuna (Thunnus albacares) in The Waters of North Maluku, Indonesia Muksin, Darmiyati; Rumagia, Faizal; Syukur, Kartina; Abubakar, Salim; Kadir, Irwan Abdul; Taeran, Imran; Darmawaty, Darmawaty; Kaidati, Bahar
Jurnal Kelautan Tropis Vol 28, No 3 (2025): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v28i3.29397

The waters of North Maluku, abundant in nutrients and ocean currents, provide an ideal habitat for yellowfin tuna (Thunnus albacares), indicating a healthy marine ecosystem. Tuna, an oceanic pelagic species that migrates with ocean currents, is affected by sea surface temperature (SST) and chlorophyll-a plays an important role in determining yellowfin tuna fishing grounds. This study aims to analyze the spatial and temporal distribution of SST and chlorophyll-a concentration in North Maluku waters and analyze the relationship between SST, chlorophyll-a, and tuna catches. The present study employed both descriptive and quantitative analysis methods to examine the relationship between sea surface temperature, chlorophyll-a, and yellowfin tuna catch. The result shows that the temporal fluctuations in the highest recorded SST were seen in the 2021 transitional season, and the lowest in the 2019 East season. Chlorophyll-a concentrations also showed fluctuations, with the highest value recorded in the 2019 East season and the lowest in the 2020 second transitional season. There is an inverse correlation between SST and chlorophyll-a, with low SST tending to be accompanied by high chlorophyll-a concentrations. The decline in chlorophyll-a concentration can be attributed to various factors, including nutrient availability, sunlight intensity, and water temperature. About 17.48% of the catch of yellowfin tuna (Thunnus albacares) in North Maluku waters is influenced by SST and chlorophyll-a while the rest is influenced by other factors. This indicates that other factors play an important role in determining the catch of yellowfin tuna in North Maluku waters.

Kesesuaian Ekowisata Mangrove di Desa Payo, Kabupaten Halmahera Barat: Kesesuaian Ekowisata Mangrove di Desa Payo, Kabupaten Halmahera Barat Riyadi Subur; Susanto, Adi Norman; Abubakar, Salim; Adi Norman
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 12 No 1 (2022): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.12.1.12-20

Keunikan ekosistem mangrove merupakan potensi yang dapat dikembangkan sebagai destinasi ekowisata. Kegiatan ekowisata adalah satu diantara sekian banyak alternatif guna menanggunlangi permasalahan lingkungan pada ekosistem mangrove. Tujuan penelitian yaitu menilai kesesuaian mangrove sebagai suatu ekosistem untuk kawasan ekowisata Desa Payo Halmahera Barat. Penelitian ini menggunakan metode survei yaitu dengan mengukur langsung kondisi biofisik mangrove. Hasil penelitian menunjukkan bahwa nilai kesesuaian ekosistem mangrove untuk ekowisata adalah 73,86%, dengan kategori “sesuai” atau (S2).

Vertical distribution macrozoobenthos on mangrove ecosystem in coastal Ternate City Riyadi Subur; Salim Abubakar; Marjanuddin A Sidik; Rina Rina; Sunarti Sunarti; Yuyun Abubakar; Nebuchadnezzar Akbar
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.0.0.47253

Macrozoobenthos are benthic animals commonly found in substrate-based ecosystems, such as mangrove forests. Their presence in mangrove ecosystems significantly influences the decomposition activities within the substrate or sediment layers. The aim of this study was to identify species composition, species density, community structure of macrozoobenthos, and their vertical distribution within sediments on mangrove ecosystem in Ternate City. The study was conducted from August to September 2021 using the line transect method, with macrozoobenthos samples collected through iron pipe corers. Data analysis included species density, species diversity, dominance index, evenness index, niche width, microhabitat niche overlap, and the relationship between macrozoobenthos density and depth. The results showed that the macrozoobenthos species composition consisted of two species (Uca spp. and Nereis spp.), with a total of 25 individuals. Species diversity within mangrove ecosystem was found to be low, with one dominant species and a relatively even distribution. The species with the broadest habitat niche was the worm (Nereis spp.), while significant microhabitat niche overlap occurred between the worm (Nereis spp.) and the crab (Uca spp.). Simple linear regression analysis indicated that substrate depth did not correlate with macrozoobenthos species density.Keywords:aquaticbenthoscoastalfaunaterrestrial

Ecological study of gastropod on seagrass ecosystem in small island sea North Maluku Indonesia Sunarti Sunarti; Yuyun Abubakar; Salim Abubakar; Riyadi Subur; Rina Rina; Nebuchadnezzar Akbar; Raut Nugrahening Widhi; Mesrawaty Sabar; Raut Wahyuning Paluphi; Disnawati Disnawati
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.0.0.47249

The seagrass ecosystem is a habitat and food source for fish and other aquatic biota. One of the biota commonly found in seagrass beds is gastropods . This aim research was carried of identifying the composition of gastropod species, assessing ecological indices which include species density, species diversity, species dominance, species evenness, distribution patterns of gastropods and their use in the seagrass ecosystem on Maitara Island. Gastropod sampling was carried out at low tide. The gastropod samples determined based on morphological characteristics such as shell shape, shell color, shell mouth opening and spiral circle. Based on the research results, the composition of gastropod species found in the seagrass ecosystem is 32 species. The density of gastropod species was highest in the seagrass ecosystem on Maitara Island, at each different station. The highest density of gastropod species was Morula uva and Strombus luhuanus, while the lowest density was Trhocus maculatus, Littorina scabra and Nassarius sp. The diversity of gastropod species at all stations is classified as moderate. For the dominance index at all stations, there is no dominant species in the category. The evenness of species at station 1 and 4 is classified as more evenly distributed, while at stations 2 dan 3 it is classified as very evenly distributed. The overall distribution pattern of gastropods is classified as clustered and random. Totals 32 species of gastropods, 10 of them are used by the people of Maitara Island as food for consumption.Keywords:benthicconditionimpacttropicalsurvival

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

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

The abundance of zooxanthellae on massive and branching coral reefs at Bama Beach, Baluran National Park, Situbondo, East Java Raut Nugrahening Widhi; Raut Wahyuning Paluphi; Muh. Aksa Azis; Salim Abubakar; Sunarti Sunarti
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.0.0.46918

Zooxanthellae are single-celled microalgae that live symbiotically in coral tissue. The porpose of this study was to determine the abundance of zooxanthellae in massive and branching corals. The research method used was descriptive analysis. The sampling technique used direct field sampling by chisels, both on massive coral reefs or branching coral reefs. Observation of zooxanthellae was conducted in the laboratory using a microscope. The results obtained from the research indicate that massive corals have a relatively higher abundance of zooxanthellae with values of 109 x 105 cells/cm than branching corals with values of 73 x 105 cells/cm. In addition, massive corals are more resistant to bleaching than branching corals due to their large reserves of zooxanthellae and their ability to adapt to environmental stress.Keywords:AbundanceZooxanthellaeMassiveBranching

Penerapan Teknologi Pengolahan Es Mangrove Boba (MaBo) Melalui Kemitraan Perguruan Tinggi dan Kelompok Masyarakat di Pulau Maitara Kota Tidore Kepulauan Salim Abubakar; Rina; Riyadi Subur; Imalita Tahir; Ariyati H. Fadel; Sunarti; Yuyun Abubakar; M. Abjan Fabanjo; M. Said Al Hadad; Darmiyati Muksin; Faizal Rumagia; Najamuddin; M. Janib Achmad; Raut Wahyuning Paluphi; Sahlan Norau; Iwan Hi Kader; Nebuchadnezzar Akbar; Rizki M. Nur
Jurnal Pengabdian Magister Pendidikan IPA Vol 9 No 2 (2026): April-Juni 2026
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v9i2.15846

Bruguiera gymnorrhiza fruit has considerable potential as an alternative food resource with nutritional and economic value; however, its utilization by local communities on Maitara Island remains limited. This Community Partnership Program (PKM) aimed to implement the processing technology of Mangrove Boba Drink (MaBo) through a partnership between a higher education institution and a community group to diversify mangrove-based food products and strengthen the local creative economy. The program was conducted in Maitara Utara Village, Tidore Islands City, Indonesia, using a participatory approach involving community outreach, training on raw material selection, mangrove flour processing, boba production, preparation of three MaBo variants (MaBo Neutral, MaBo Full, and MaBo Local), sensory evaluation, and technical assistance for the Marirasa Creative Group. The results showed that all participants successfully mastered the MaBo processing technology and produced products that were well accepted by the sensory panel, with all attributes receiving scores within the "liked" to "highly liked" categories (4–5). Among the three variants, MaBo Full achieved the highest overall preference, followed by MaBo Local and MaBo Neutral. The program enhanced the knowledge and technical skills of the community in processing mangrove fruit into innovative products with the potential to support locally based creative enterprises while strengthening partnerships between higher education institutions and community groups.

Vertical distribution macrozoobenthos on mangrove ecosystem in coastal Ternate City Riyadi Subur; Salim Abubakar; Marjanuddin A Sidik; Rina Rina; Sunarti Sunarti; Yuyun Abubakar; Nebuchadnezzar Akbar
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.0.0.47253

Macrozoobenthos are benthic animals commonly found in substrate-based ecosystems, such as mangrove forests. Their presence in mangrove ecosystems significantly influences the decomposition activities within the substrate or sediment layers. The aim of this study was to identify species composition, species density, community structure of macrozoobenthos, and their vertical distribution within sediments on mangrove ecosystem in Ternate City. The study was conducted from August to September 2021 using the line transect method, with macrozoobenthos samples collected through iron pipe corers. Data analysis included species density, species diversity, dominance index, evenness index, niche width, microhabitat niche overlap, and the relationship between macrozoobenthos density and depth. The results showed that the macrozoobenthos species composition consisted of two species (Uca spp. and Nereis spp.), with a total of 25 individuals. Species diversity within mangrove ecosystem was found to be low, with one dominant species and a relatively even distribution. The species with the broadest habitat niche was the worm (Nereis spp.), while significant microhabitat niche overlap occurred between the worm (Nereis spp.) and the crab (Uca spp.). Simple linear regression analysis indicated that substrate depth did not correlate with macrozoobenthos species density.Keywords:aquaticbenthoscoastalfaunaterrestrial

Ecological study of gastropod on seagrass ecosystem in small island sea North Maluku Indonesia Sunarti Sunarti; Yuyun Abubakar; Salim Abubakar; Riyadi Subur; Rina Rina; Nebuchadnezzar Akbar; Raut Nugrahening Widhi; Mesrawaty Sabar; Raut Wahyuning Paluphi; Disnawati Disnawati
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.0.0.47249

The seagrass ecosystem is a habitat and food source for fish and other aquatic biota. One of the biota commonly found in seagrass beds is gastropods . This aim research was carried of identifying the composition of gastropod species, assessing ecological indices which include species density, species diversity, species dominance, species evenness, distribution patterns of gastropods and their use in the seagrass ecosystem on Maitara Island. Gastropod sampling was carried out at low tide. The gastropod samples determined based on morphological characteristics such as shell shape, shell color, shell mouth opening and spiral circle. Based on the research results, the composition of gastropod species found in the seagrass ecosystem is 32 species. The density of gastropod species was highest in the seagrass ecosystem on Maitara Island, at each different station. The highest density of gastropod species was Morula uva and Strombus luhuanus, while the lowest density was Trhocus maculatus, Littorina scabra and Nassarius sp. The diversity of gastropod species at all stations is classified as moderate. For the dominance index at all stations, there is no dominant species in the category. The evenness of species at station 1 and 4 is classified as more evenly distributed, while at stations 2 dan 3 it is classified as very evenly distributed. The overall distribution pattern of gastropods is classified as clustered and random. Totals 32 species of gastropods, 10 of them are used by the people of Maitara Island as food for consumption.Keywords:benthicconditionimpacttropicalsurvival

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