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All Journal Jurnal Kelautan Tropis Omni-Akuatika Jurnal Ilmu Kelautan Kepulauan Agrikan: Jurnal Agribisnis Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Halikuddin Umasangaji
Program Studi Ilmu Kelautan, Fakultas Perikanan Dan Kelautan, Universitas Khairun
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology

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An Assessment of Microplastics (MPs) Sedimentary Accumulation in Seagrass Meadows of Mare Island Conservation Area, North Maluku, Indonesia Yunita Ramili; Halikuddin Umasangaji
Journal Omni-Akuatika Vol 18, No 1 (2022): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.1.921

Abstract

Research on the occurrence and the characteristics of microplastics (MPs) sedimentary in seagrass meadows at the area of Mare Island conservation is the very first study in this region. The objectives of this work is to determine the abundance and the characteristics of MPS and its diversity in the two villages namely Maregam and Marekofo at the Island. Samples are collected using sediment core, then dried and extracted using NaCl to separate the density. MPs were identified under a microscope after going through the filtering process. The abundance of MPs particles ranges from 17,000 - 37,000 particles. kg-1dry weight (dw) sediment at Station 1 (Maregam) and 13.839 - 30,666 particles.kg-1 dw sediment at Station 2 (Marekofo). In general, the average value of MPs abundance at station 1 higher than station 2 were 27.090 ± 13.908 particles.kg-1 dw of sediment and 18,368 ± 10,625 particles.kg-1 dw of sediment, respectively. Statistically there no significance difference of the MPs abundance between the two station Furthermore, the predominance of MPs types were fiber and fragments, while the majority of colors of particles were blue. While the results of the microplastic diversity test indicated that MPS particles at Mare Island were not too complex and were in unstable conditions. Even though the less density of the population at the island, MPs were quite high compared to other areas in the world. This finding is allegedly that those MPs were supplied from the distance which transmitted by hydro-oceanographic and meteorology factors, beyond of local contribution.Keywords: Microplastic, seagrass bed, sediment, conservation area, Mare Island
Tingkat pencemaran perairan pantai Kota Ternate berdasarkan bioindikator fitoplankton Najamuddin Najamuddin; Halikuddin Umasangaji; Herawati Herawati; Irmalita Tahir; Nebuchadnezzar Akbar; Rustam Effendi Paembonan; Firdaut Ismail
Jurnal Ilmu Kelautan Kepulauan Vol 6, No 1 (2023): Jurnal Ilmu Kelautan Kepulauan
Publisher : Fakultas Perikanan dan Kelautan. Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jikk.v6i1.6455

Abstract

Composition and Abundance of Phytoplankton with Potential Harmful Algal Blooms (HABs) on Ternate Island Coastal Waters, North Maluku Ramili, Yunita; Umasangaji, Halikuddin; Drakel, Andreyan
Agrikan Jurnal Agribisnis Perikanan Vol. 16 No. 1 (2023): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v16i1.1519

Abstract

The existence of several species of phytoplankton with potential HABs (Harmful Algal Blooms) was investigated on the coastal waters of Ternate Island. This work aims at describing the distribution, species composition, and the abundance of phytoplankton with potential HABs and their ecological index. Data collection was carried out in August 2022 in the coastal waters of Ternate Island at three research locations, namely in Dorpedu (Station 1), Falajawa, Muhajirin Village (Station 2) and Kulaba (Station 3), respectively. Sampling of phytoplankton uses a filtering method with a plankton net. The results of this study quantified 24 genera of phytoplankton where 11 generas were included the group of potential HABs, namely Leptocylindrus, Coscinodiscus, Pseudo Nitzschia. Rhizosolenia, Chaetoceros, and Nitzschia (Class Bacillariophyceae), Gymnodinium, Protoperidinium, Alexandrium, and Ceratium (Class Dinophyceae), and Phaeocystis (Class Prymnesiophyte). The highest abundance of potential HABs varied between research stations, Rhizosolenia sp. of 7.6388x104 cells/l at station 1, Leptocylindrus sp. of 5.4504x104 cells/l, Phaeocystis sp. of 4.0x104 cells/l at Station 2. On the other hand, the lowest abundance was Nitzschia sp. of 4.1291x102 cells/l at Station 1, Gymnodinium sp. of 4.1291x102 cells/l at Station 2, and Pseudo Nitzschia sp. of 1.2387x103 cells/l at Station 3. Generally, the ecological condition of the phytoplankton community in Ternate Island Waters has a moderate level of species diversity with fairly even distribution of species and no dominance of certain species.
The Health Status of Seagrass Beds in the Coastal Waters of Tidore Island City, North Maluku Ramili, Yunita; Umasangaji, Halikuddin; Sudin, Salwa
Agrikan Jurnal Agribisnis Perikanan Vol. 16 No. 2 (2023): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v16i2.1746

Abstract

This research aims at analyzing the condition of seagrass beds on Tidore, Sibu, Tosa and Guraping Village as a basis for determining coastal ecosystem management. This work was carried out from September to October 2022 in the coastal waters of Rum (St. 1), Tosa (St. 2), Sibu (St. 3), and Guraping (St. 4). The data were collected using Quadratic Linear Transect Method. This research revealed 12 species of seagrass with the highest species composition at Rum-St. 1 (11 species) and the lowest at Tosa-St. 2 (4 species). The types of seagrass which have a wide distribution at four stations are Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata and Syringodium isoetifolium. Meanwhile, Cymodocea serrulate, Halophila spinulosa, Thalassodendron ciliatum and Halodule pinifolia have a narrow distribution only found at certain stations. Thalassia hemprichii had the highest species density and cover values of 211.65 ind/m2 and 31.67% respectively. T. hemprichii also had the highest IVI (74,55% - 135,68%) which indicated its important role in the seagrass ecosystem at the four research stations. Generally, the ecological conditions of seagrass beds indicatd a moderate level of species diversity (H'= 1.25 – 1.77) with high species evenness (E= 0.89 – 0.94) and no species dominating (C= 0.19 – 0.32). The health status of seagrass meadows at the four research stations can be categorized as 'healthy' at Station 1 (68.36%) and 2 (65.63%), while the 'less healthy' category was found at Station 3 (47.62%) and 4 (50.24%).
Length-Weight Relationship and Condition Factors of Sea Cucumber on Mare and Moti Islands Conservation Areas in North Maluku Ramili, Yunita; Umasangaji, Halikuddin; Legohiwo, Misnawati
Jurnal Kelautan Tropis Vol 27, No 1 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i1.22017

Abstract

This work aimed at determining the growth patterns and condition factors of three sea cucumber species, namely Holothuria atra, Bohadschia marmomata, and B. vitiensis in seagrass beds of Mare and Moti Islands. Samples were collected in March 2023 using a roaming survey method in a block area with an area of 5000 m2.  As amount of 54 sea cucumbers were analysed from Mare Island and 58 individuals from Moti Island. The results of this study indicate that the correlation (r) length-weight relationship for the three sea cucumber species is stronger (r > 0.6) on Moti Island than Mare Island.  H. atra and B. marmorata have a negative allometric growth pattern, while B. vitiensis has a positive allometric growth pattern on both islands. The Fulton condition factors for the sea cucumbers assessed on Mare Island were recorded for H. atra of 2.84 ± 2.01, B. marmorata of 3.13 ± 2.47 and B. vitiensis of 9.24 ± 5.73. Meanwhile, at Moti Island were found for H. atra of 12.49 ± 11.66, B. marmorata of 9.58 ± 7.38, and B. vitiensis of 8.87 ± 3.68. This is indicated that all sea cucumber species are in good physical condition. Meanwhile, the relative weight condition factor (Wr) of the three species of sea cucumbers on both islands were in the range above 100, which indicated a food surplus in their habitat. The results of this research can be important as the preliminary data in terms of sustainable management of sea cucumber stocks in North Maluku.
Accumulation of Marine Debris in Seagrass Meadows in The Waters of Hiri and Mare Islands, North Maluku Umasangaji, Halikuddin; Noho, Arif Gamalama; Ramili, Yunita
Agrikan Jurnal Agribisnis Perikanan Vol. 17 No. 2 (2024): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v17i2.2204

Abstract

Marine debris have become a serious problem due to the lack of waste management from anthropogenic activities. The seagrass ecosystem has become an area for marine debris accumulation that can disrupt the bio-ecological function. This study aims at determining the sizes and weight of marine debris, quantify their densities, and examining the relationship between seagrass density and marine debris abundance. The study was conducted in September– October 2022 in the waters of Hiri and Mare Island. Marine debris data collection was carried out in observation plot (100mx50m). Seagrass data was taken on the same plot using the linear quadratic transect method. The results of the study obtained five types of marine debris, namely plastic, metal, glass, rubber, and others. The highest total amount of marine debris was found on Mare Island (208–368 items) compared to Hiri Island (58 items). Plastic was the most dominant type of marine debris (80.72%–85.97%) while glass was the lowest (0–2.47%). Macro debris were the most commonly found on both islands. The highest total weight of marine debris was found on Mare Island (4952.26–9349.98 grams), while the lowest one on Hiri Island (1129.06 grams). The abundance and accumulation of marine debris were higher on Mare Island (0.0368 gr/m2 and 0.935 gr/m2) compared to Hiri Island (0.0058 items/m2 and 0.0013 gr/m2). The highest seagrass density was found on Hiri Island (82.78 ind/m2) and the lowest on Mare Island (20.17 ind/m2). The strong relationship between seagrass and marine debris (r=0.77) on the negative way.
Accumulation of Microplastics on Seagrass Leaves of Enhalus acoroides on Mare Island as a Conservation Area in North Maluku Ramili, Yunita; Umasangaji, Halikuddin
Journal Omni-Akuatika Vol 19, No 2 (2023): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2023.19.2.1097

Abstract

Seagrass ecosystems have been indicated as the new hotspots of microplastics (MPs) in the marine environment. This work aimed at determining the potential of microplastics and epibionts accumulation on Enhalus acoroides leaves at the coast of Mare Island as one of the conservation areas in North Maluku region. Samples collection was carried out in August 2021 at two research locations, namely Maregam (Station 1) and Marekofo (Station 2) villages. Each of E. acoroides leaves (18 leaves) was observed for the presence of microplastic that attached on the epibionts of seagrasses. Seagrass leaves were collected using line transect which was stretched out to 50 m vertically seaward. Subsequently, the characterization of epibionts on the seagrass leave were determined according the rank of the cover percentage of epibionts. Meanwhile microplastics were identified referring to their shapes and colors under microscope observation. The results showed that three types of microplastics were embedded on the epibiont matrices of E. acoroides leaves namely fibers, fragments, and pellets. The average number of microplastic particles in E. acoroides leaves at station 1 was higher (9.1 MPs particles/leaf) than Station 2 (4.5 MPs particles/leaf). The accumulation of fiber type was higher at station 2 (76%) than station 1 (41%), conversely the accumulation of fragment type was higher at Station 1 (54%) than station 2 (19%), while pellets were found to be the least in both stations. Overall, seven colors of microplastic were found, namely blue, brown, black, red, green, orange and white, except at station 2 was absence of brown one. Station 1 was dominated by the white color (32%) while station 2 dominated by the black color (32%). According to the level of epibiont closure, it was found that the presence of microplastics was higher in the rank 1 epibiont at Station 1 where the epibiont covers less than 25%, while at station 2 was the highest one with the rank of 3 which meant that the epibiont covers was 50 – 75%. We concise that through this finding the society should be aware of microplastics extention on coastal area including seagrass leaves. Thus, the local government should pay attention of plastic debris management in the future to mitigate the impacts of these contaminants to the marine environment.Keywords: microplastics, Enhalus acoroides, epibiont, Mare Island
Composition, Distribution, and Diversity of Gastropod Species in The Estuarine Waters of Kaiyasa and Oba Village, Tidore Islands City, North Maluku Ramili, Yunita; Marus, Ikbal; Barawis, Nurul Asmania H.; Umasangaji, Halikuddin
Agrikan Jurnal Agribisnis Perikanan Vol. 18 No. 1 (2025): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Estuaries are one of the habitats for gastropods that have not been widely explored in North Maluku. This study aims at assessing the ecological conditions of gastropods in the estuarine waters including their composition, distribution, density, and species diversity. The study was conducted in August 2024 in the estuarine waters of Kaiyasa Village (Station 1) and Oba Village (Station 2). Data collection was carried out using the Quadratic Linear Transect Method. The results of this study found six species of gastropods with the highest composition found at Station 1 as 6 species, namely Faunus ater, Telescopium telescopium, Terebralia palustris, Cerithium coralium, Nassarius olivaceus, and Chicoreus capucinus compared to Station 2 as two species namely F. ater and T. palustris. F. ater which dominated both research stations since they were found in large numbers, namely 342 individuals (93%) at Station 1 and 299 individuals (98%) at Station 2. F. ater also had the highest density values of all species of gastropods found, namely 19.00 ind/m2 (Station 1) and 16.61 ind/m2 (Station 2), while C. coralium and C. capucinus have the lowest density values of 0.11 ind/m2. In general, the ecological conditions of gastropods at both research stations indicate a relatively low level of species diversity (H’ = 0.1 – 0.34), with low species evenness (E = 0.14 – 0.19), and indicated the dominance of certain species (C = 0.87 – 0.96), namely F. ater. The quality of the estuary water environment at both stations was still suitable for supporting gastropod life.
Preliminary detection of marine debris pollution in mangrove ecosystem on Moti Island as a conservation area in North Maluku, Indonesia Umasangaji, Halikuddin; Ramili, Yunita; Hatari, Anisa Eka Putri
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 3 (2025): SEPTEMBER 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.3.45966

Abstract

Mangrove ecosystem have been recognized as a paramount area in terms of marine debris traps despite of their essential role in carbon sequestration and coastal protected. This study collected marine debris and observed mangrove conditions on Moti Island as one of the conservation area in North Moluccas. The results of this study showed that R. apiculata had the highest species composition at both stations. The mangrove density at Station 2 (622 ind.h-1) which was higher than Station 1 (589 ind.h-1). The total number of marine debris was 214 items, with the highest composition of plastic debris (96% - 97%) and the lowest was metals. Most of the marine debris was classified as macro debris. The total weight of marine debris was higher at Station 2 (1812.79 g) than at Station 1 (1727.69 g) Furthermore, the density and accumulation values of marine debris at Station 2 were higher (0.12 items.m-2 and 6.043 g.m-2) than those at Station 1 (0.063 items.m-2 and 2.879 g.m-2). The mangrove beach cleanliness index at both research stations was categorized as very clean (Station 1) and clean (Station 2). The relationship between marine debris and mangrove density showed a positive correlation despite low correlation with an r2 value of 0.24. Meanwhile, according to single way ANOVA, there was no significant difference in marine debris abundance between the two stations. Polymer identification through commercial labels implied the dominance of PET, LDPE and PP types at both stations.Keywords:Marine debrisMangrove ecosystemConservation areaMoti islandNorth Moluccas
Preliminary detection of marine debris pollution in mangrove ecosystem on Moti Island as a conservation area in North Maluku, Indonesia Umasangaji, Halikuddin; Ramili, Yunita; Hatari, Anisa Eka Putri
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 3 (2025): SEPTEMBER 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.3.45966

Abstract

Mangrove ecosystem have been recognized as a paramount area in terms of marine debris traps despite of their essential role in carbon sequestration and coastal protected. This study collected marine debris and observed mangrove conditions on Moti Island as one of the conservation area in North Moluccas. The results of this study showed that R. apiculata had the highest species composition at both stations. The mangrove density at Station 2 (622 ind.h-1) which was higher than Station 1 (589 ind.h-1). The total number of marine debris was 214 items, with the highest composition of plastic debris (96% - 97%) and the lowest was metals. Most of the marine debris was classified as macro debris. The total weight of marine debris was higher at Station 2 (1812.79 g) than at Station 1 (1727.69 g) Furthermore, the density and accumulation values of marine debris at Station 2 were higher (0.12 items.m-2 and 6.043 g.m-2) than those at Station 1 (0.063 items.m-2 and 2.879 g.m-2). The mangrove beach cleanliness index at both research stations was categorized as very clean (Station 1) and clean (Station 2). The relationship between marine debris and mangrove density showed a positive correlation despite low correlation with an r2 value of 0.24. Meanwhile, according to single way ANOVA, there was no significant difference in marine debris abundance between the two stations. Polymer identification through commercial labels implied the dominance of PET, LDPE and PP types at both stations.Keywords:Marine debrisMangrove ecosystemConservation areaMoti islandNorth Moluccas
Co-Authors Barawis, Nurul Asmania H. Drakel, Andreyan Firdaut Ismail Hatari, Anisa Eka Putri Herawati Herawati Ikbal Marus, Ikbal Irmalita Tahir Legohiwo, Misnawati Najamuddin N Nebuchadnezzar Akbar Noho, Arif Gamalama Ramili, Yunita Rustam Effendi Paembonan Sudin, Salwa