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All Journal Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut AGRISAINS Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) PERAIRAN TROPIS JURNAL ENGGANO AGRIKAN Jurnal Ilmiah Agribisnis dan Perikanan Jurnal Biologi Tropis Jurnal Riset Akuakultur Prosiding Seminar Nasional Kemaritiman dan Sumber Daya Pulau-Pulau Kecil Jurnal Pengabdian Magister Pendidikan IPA Buguh: Jurnal Pengabdian Kepada Masyarakat Agrikan: Jurnal Agribisnis Perikanan LEBAH Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Jurnal Pengabdian Khairun Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Jurnal Ragam Pengabdian
Riyadi Subur, Riyadi
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Journal : Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan

 1 
The effect of NPK fertilizer with different dosage on the growth rate seaweed (Caulerpa racemosa) Riyadi Subur; Muhammad Irfan; Nebuchadnezzar Akbar
Depik Vol 10, No 3 (2021): December 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (380.756 KB) | DOI: 10.13170/depik.10.3.20848

Abstract

NPK is a type of fertilizer that plays a role in increasing growth and survival in plants such as seaweed. This study aims to determine the effect of different NPK fertilizer doses on the growth rate of seaweed (Caulerpa racemosa), and to determine which NPK fertilizer dosage has the best effect on the growth rate of C. racemosa. Research begins with collecting samples of seaweed in coastal waters. Ternate Island District Kastela, and the cultivation process is carried out on Jalan Jan, Tabona Village, South Ternate City. The time of the research was two months from August to October, 2020. This study used 12 units of cool box in the form of cork with a size of 90 x 30 cm, which is used as a container for maintaining of C. racemosa. In each treatment using a seed weight of 50 grams. The NPK fertilizer dosage treatment tested was 4 doses, with 3 replications, namely: treatment A: 40 ml NPK fertilizer; B: 60 ml NPK fertilizer; C: 80 ml NPK fertilizer; D: 0 ml NPK fertilizer (control). Research containers using random placement. The design used was a completely randomized design (CRD), using analysis of variance (ANOVA). The results obtained showed that NPK fertilizer with different doses the effect is not significantly different on the growth rate of C. racemosa with the highest average growth rate in treatment C amounting to 8.725%, followed by treatment B of 8.178%, treatment A of 7.761%, and the lowest was treatment D of 6.519%.Keywords:NPKSeaweedCaulerpa racemosaGrowth rate
The effect of NPK fertilizer with different dosage on the growth rate seaweed (Caulerpa racemosa) Riyadi Subur; Muhammad Irfan; Nebuchadnezzar Akbar
Depik Vol 10, No 3 (2021): December 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.3.20848

Abstract

NPK is a type of fertilizer that plays a role in increasing growth and survival in plants such as seaweed. This study aims to determine the effect of different NPK fertilizer doses on the growth rate of seaweed (Caulerpa racemosa), and to determine which NPK fertilizer dosage has the best effect on the growth rate of C. racemosa. Research begins with collecting samples of seaweed in coastal waters. Ternate Island District Kastela, and the cultivation process is carried out on Jalan Jan, Tabona Village, South Ternate City. The time of the research was two months from August to October, 2020. This study used 12 units of cool box in the form of cork with a size of 90 x 30 cm, which is used as a container for maintaining of C. racemosa. In each treatment using a seed weight of 50 grams. The NPK fertilizer dosage treatment tested was 4 doses, with 3 replications, namely: treatment A: 40 ml NPK fertilizer; B: 60 ml NPK fertilizer; C: 80 ml NPK fertilizer; D: 0 ml NPK fertilizer (control). Research containers using random placement. The design used was a completely randomized design (CRD), using analysis of variance (ANOVA). The results obtained showed that NPK fertilizer with different doses the effect is not significantly different on the growth rate of C. racemosa with the highest average growth rate in treatment C amounting to 8.725%, followed by treatment B of 8.178%, treatment A of 7.761%, and the lowest was treatment D of 6.519%.Keywords:NPKSeaweedCaulerpa racemosaGrowth rate
Vertical distribution macrozoobenthos on mangrove ecosystem in coastal Ternate City Subur, Riyadi; Abubakar, Salim; Sidik, Marjanuddin A; Rina, Rina; Sunarti, Sunarti; Abubakar, Yuyun; Akbar, Nebuchadnezzar
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
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

Abstract

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; Abubakar, Yuyun; Abubakar, Salim; Subur, Riyadi; Rina, Rina; Akbar, Nebuchadnezzar; Widhi, Raut Nugrahening; Sabar, Mesrawaty; Paluphi, Raut Wahyuning; Disnawati, Disnawati
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
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

Abstract

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 Abubakar, Salim; Rina, Rina; Subur, Riyadi; Kepel, Rene C; Sunarti, Sunarti; Serosero, Rugaya H; Abubakar, Yuyun; Akbar, Nebuchadnezzar; Najamuddin, Najamuddin; Achmad, M. Janib; Fadel, Ariyati H.; Al Hadad, M. Said; Widhi, Raut Nugrahening; Paluphi, Raut Wahyuning
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
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
Preliminary study oceanography and environmental parameters of habitat endemic species Halmahera walking shark (Hemiscyllium halmahera) on Indopacific Ocean Area in North Maluku Indonesia Natih, Nyoman Metta N; Akbar, Nebuchadnezzar; Bengen, Dietriech G; Nurjaya, I Wayan; Subur, Riyadi; Baksir, Abdurrachman; Ismail, Firdaut; Wahab, Iswandi; Arafat, Dondy; Paembonan, Rustam E; Siolimbona, Abdul Ajiz; Rasidi, Rasidi; Budiman, Asep Sandra; Subhan, Beginer
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
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
Co-Authors Abd. Mutalib, Nurhasna Abdul Kadir, Masykhur Abdulkadir, Masykur Abdullah, Nursanti Abdurrachman Baksir, Abdurrachman Abubakar, Salim Abubakar, Yuyun Achmad Fahrudin Achmad Fahrudin Achmad, M. Janib Adi Noman Susanto Adi Norman Susanto Adinoman Susanto Ahmad, Aditiyawan Al Hadad, M. Said Alhadad, M Said Alhadad, M.Said Antasalam Ajo Ardan Samman Ardan Samman Aris, Muhammad Ariyanti H. Fadel Ariyati H. Fadel Ariyati H. Fadel Ariyati H. Fadel Aryati A. Fadel Asep Sandra Budiman, Asep Sandra Bahtiar Hamar Beginer Subhan Benua, Rusmawati La Bone, Abdul Hadi Cahyani, Waode Sitti Darlita, Ayu Darmawaty Darmawaty Darmawaty, Darmawaty Darmiyati Muksin Dietriech Geoffrey Bengen Disnawati Disnawati Disnawati, Disnawati Dondy Arafat Dr. M. Irfan Koda Duwila, Suhartono Eko S. Wibowo Fabanjo, Mohammad Abjan Fadel, Ariyati H. Failu, Ismail Faizal Rumagia Fajria Dewi Salim Fajria Dewi Salim Findra, Muhammad Nur Fredinan Yulianda Gamal M. Samadan H. Fadel, Ariyati Hendrik Suryo Suriandjo Hi. Iksan, Kusdi Hi. Kader, Iwan I Wayan Nurjaya Iksan, Kusdi Hi irham Irmalita Tahir Irmalita Tahir Ismail, Firdaut Kaidati, Bahar Karman, Amirul Kepel, Rene C Koda, Dr. M. Irfan Kodung, Faisal Rivai M IRFAN, M M. Abjan Fabanjo M. Said Al Hadad M. Said Al Hadad Malan, Sudirto Masykhur Abdul Kadir Masykhur Abdul Kadir Masykhur Abdul Kadir Masykhur Abdul Kadir Masykhur Abdul Kadir Masykhur Abdul Kadir, Masykhur Abdul Mesrawati Sabar Mesrawaty Sabar Mesrawaty Sabar Muhammad Aris Muhammad Irfan Muhammad Irfan Najamuddin Najamuddin, Najamuddin Nebuchadnezzar Akbar Nur, D.M. Nur, Iswan M. Nyoman M N Natih Paembonan, Rustam E Paluphi, Raut Wahyuning Parliansyah, M Rizky Pertiwi, Reni Tyas Asrining Rasidi, Rasidi Raut Nugrahening Widhi Raut Wahyuning Paluphi Reni Tyas Asrining P Rina Rina Rina Rina Rina Rina Rina Rina Rina Rina Rina Rina Rina Rina Rugaya H. Serosero Rumagia, Faizal Sabar, Mesrawaty Sabilu, Kadir Sahlan Norau Samadan, Gamal M Saman Sarni Sarni Sarnia, Sarnia Sembel, S. Nurul K. Serosero, Rugaya Serosero, Rugaya H Serosero, Rugaya H. Setyo Budi Susilo Sidik, Marjanuddin A Siolimbona, Abdul Ajiz Sirza, LM Junaidin Sri Endah Widiyanti Sri Endah Widiyanti Sudirto Malan Sukmawati Djalil Sunarti Sunarti Sunarti Sunarti Sunarti Sunarti Sunarti Sunarti Sunarti Surahman Surahman SURYANI Tahir, Imalita Tamrin Tamrin Tamrin Taufiq Abdullah Taufiq Abdullah, Taufiq Wahab, Iswandi Wahidin, Nurhalis WAODE MUNAENI Wardana Wardana Widhi, Raut Nugrahening Yuliana Yuliana Yuyun Abubakar