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STRUKTUR DAN ASOSIASI JENIS LAMUN DI PERAIRAN PULAU-PULAU HIRI, TERNATE, MAITARA DAN TIDORE, MALUKU UTARA Yunita Ramili; Dietriech G. Bengen; Hawis Madduppa; Mujizat Kawaroe
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 3 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (742.116 KB) | DOI: 10.29244/jitkt.v10i3.22476

Abstract

ABSTRAKKeberadaan ekosistem lamun di perairan pesisir pulau-pulau kecil berperan penting sebagai habitat dan penyedia sumber daya ikan, serta pelindung garis pantai dan daratan pulau-pulau kecil tersebut. Penelitian ini bertujuan untuk menganalisis sebaran, komposisi, kerapatan, penutupan dan asosiasi jenis lamun di perairan pulau-pulau kecil Hiri, Ternate, Maitara dan Tidore, Maluku Utara. Pengambilan data dengan menggunakan metode transek garis dan transek kuadrat. Selanjutnya data dianalisis dengan menggunakan bantuan perangkat lunak MS Excel dan XLstat. Hasil penelitian menunjukkan bahwa Pulau Tidore memiliki jumlah jenis lamun terbanyak yakni delapan jenis lamun dari sembilan jenis lamun yang ditemukan di seluruh lokasi penelitian. Tiga jenis lamun yaitu, Enhalus acoroides, Thalassia hemprichii dan Cymodocea rotundata, menyebar luas dan terdapat di keempat pulau tersebut. Komposisi, kerapatan dan penutupan jenis lamun bervariasi antar stasiun penelitian. Vegetasi lamun yang ditemukan di lokasi penelitian berupa vegetasi campuran yang terdiri dari tiga sampai delapan jenis lamun. E. acoroides banyak ditemukan di Stasiun Mtr1 dan Tte2 tidak berasosiasi dengan spesies lainnya, demikian juga dengan C. serrulata yang ditemukan di Stasiun Mtr2 dan T. hemprichii di Stasiun Tdr2 dan Tdr3. Asosiasi C. rotundata dan Syiringodium isoetifolium terlihat di stasiun Tdr1 dan Hr1, sementara Halophila ovalis dan H. spinulosa  tidak menunjukkan asosiasi dengan jenis lamun lainnya di lokasi penelitian. Secara keseluruhan kondisi lingkungan perairan di keempat pulau tersebut masih tergolong baik dan mampu mendukung ekosistem lamun. ABSTRACTThe existence of seagrass ecosystems in the coastal region of small islands has been playing an essential role as a habitat and the supplier of fish resources, as well as a shore and coastline protector of small islands. This study aimed to  determine the distribution, composition, density, coverage, and associations of seagrass plant in the islands of Hiri, Ternate, Maitara, and Tidore. Data were collected by using line transect method and quadrate transect. Furthermore, data were analyzed by using MS Excel and XLstat software. The results showed that Tidore Island has the highest number of seagrass species namely eight from nine species of seagrasses found in all research sites. Three species of seagrasses, Enhalus acoroides, Thalassia hemprichii, and Cymodocea rotundata, were widespread in all four islands. The composition, density and coverage of seagrass species varied among research stations. Vegetation of seagrasses found in the study site in the form of mixed vegetation consisting of three to eight species. Enhalus acoroides found mostly in Mtr1 and Tte2 stations were not associated with other seagrass species, nor Cymodocea serrulata that found in Mtr2 Station and T. hemprichii at Tdr2 and Tdr3 stations. The associations of C. rotundata and Syringodium isoetifolium were observed at Tdr1 and Hr1 Stations. While Halophila ovalis and Halophila spinulosa showed no association with other seagrass species at the study area. Overall the condition of the marine environment on the four islands is still relatively good and able to support the life of the seagrass ecosystem.
Pola Sebaran dan Kelimpahan Hiu Berjalan Halmahera (Hemiscyllium halmahera) di Teluk Weda Maluku Utara, Indonesia Mu’min Mu’min; Nebuchadnezzar Akbar; Abdurrachman Baksir; Irmalita Tahir; Rommy M. Abdullah; Yunita Ramili; Firdaut Ismail; Rustam E Paembonan; Ikbal Marus; Eko S Wibowo; Hawis Madduppa; Beginer Subhan; Iswandi Wahab
Jurnal Sumberdaya Akuatik Indopasifik Vol 5 No 2 (2021): Mei
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2021.Vol.5.No.2.128

Abstract

The Halmahera walking shark is a nocturnal species that lives at the bottom of waters and is a species endemic to North Maluku. Weda Bay is one of the largest bays on the island of Halmahera and contains marine resources and high diversity. The aims research was analyze the distribution pattern and abundance of Halmahera walking shark at that location. The research was conducted in September - November 2020. The sampling in Weda Bay, is carried out in two methods, (1) catch of nets with a mesh size of 2,5 cm stretched from the mangrove ecosystem, seagrass to coral reefs with a length of ± 50 meters and a height of 1,5 meters, (2) hand sampling equipment namely the sample catch it by hand with transect area (50x50m2) or 0,25 ha using basic diving equipment (snorkeling) to a depth of 3 meters at high tide in the night. Distribution pattern data analysis used Morisita Index and abundance analysis used reef fish abundance equation. Results the research found 28 individuals, namely 17 females and 11 males. There are 2 distribution patterns of the Halmahera epaullette shark, namely Grouping and Random. The clustered distribution pattern is found at stations 1, 2 and 4, while the random distribution pattern is found at station 3. Overall the distribution pattern of the Halmahera walking shark in Weda Bay is grouped. The highest abundance of Halmahera walkingshark was at station 1, namely 17,33 ind/ha and the lowest abundance at stations 3 and 4 was 5,33 ind/ha. The highest abundance is at station 1, this is because the habitat is still very good from the mangrove, seagrass and coral reef ecosystems to find food and the growth of the Halmahera walking shark.
Restorasi lamun; studi transplantasi lamun Enhalus acaroides di perairan pantai Kastela, Kota Ternate Muhammad Ridwan Lessy; Yunita Ramili
Jurnal Ilmu Kelautan Kepulauan Vol 1, No 1 (2018)
Publisher : Fakultas Perikanan dan Kelautan. Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (695.773 KB) | DOI: 10.33387/jikk.v1i1.680

Abstract

ABSTRAKEkosistem padang lamun di Pesisir Kota Ternate mulai mengalami kerusakan karena aktivitas manusia. Untuk itu penelitian ini bertujuan untuk menguji metode yang terbaik untuk melakukan transpalntasi lamun. Ketiga metode yang diuji adalah metode Turf, metode Peat Pot dan metode spring anchored. Sampel lamun yang digunakan sebagai donor diambil dari lokasi sekitarnya. Pengamatan tingkat kelangsungan hidup lamun transplantasi dilakukan selama tiga bulan sedangkan pengukuran parameter lingkungan dilakukan dua kali dalam sebulan. Hasil penelitian menunjukkan bahwa parameter lingkungan masih mendukung kehidupan lamun. Dari ketiga metode yang diuji, metode spring anchored menghasilkan tingkat kelangsungan hidup yang paling tinggi (86,7%) kemudian disusul oleh metode Peat Pot (73,3%) dan metode Turf (33,3%).Kata Kunci: Ekosistem Lamun; Transplantasi; Wilayah Pesisir; Ternate
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
Penilaian ikan karang pada daerah transplantasi karang di perairan laut Kastela Ternate Rustam E Paembonan; Yadi D Naipon; S Baddu; Abdurrachman Baksir; Ikbal Marus; Yunita Ramili; Najamuddin Najamuddin; Irmalita Tahir; Nebuchadnezzar Akbar
Jurnal Ilmu Kelautan Kepulauan Vol 5, No 1 (2022): 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.v5i1.4755

Abstract

Struktur komunitas dan pemetaan ekosistem mangrove di pesisir Pulau Maitara, Provinsi Maluku Utara, Indonesia Nebuchadnezzar Akbar; Nasir Haya; Abdurrachman Baksir; Zulhan A. Harahap; Irmalita Tahir; Yunita Ramili; Raismin Kotta
Depik Vol 6, No 2 (2017): August 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (733.017 KB) | DOI: 10.13170/depik.6.2.6402

Abstract

Mangrove is ecosystem important in coastal area. Human exploited make decrease habitat mangroves ecosystem. The highly activity in this area threaten quantity ecology ecosystem mangroves.The objective of the present study was to examine the ecological indices and mapping of mangrove in coastal region on Maitara Island, North Moluccas.Information about that most important for sustainable mangrove management. The results showed that mangroves composition found that 4 specieses belong to 3 families.total density of stations namely 215.78 tree/hectare, frequency 722.22 tree/hectare, percent cover 189.29% and significantion value 300 every stations. The density and frequency highest of species found Rhizopora apicullata, Avicennia alba, Sonneratia alba. The density and frequency lowest Sonneratia caseolaris. The percent cover highest types derived Sonneratia alba, Sonneratia caseolaris, Avicennia alba and percent lowest is Sonneratia caseolaris. Overall the ecological index analysed diversity of mangroves found is minor. The characterize mangrove zonation that Rhizhopora Sp is aleadingconstituentof mangrove ecosystem from coast to land inthe Maitara Island. Extensivemangroveobtained fromfieldclassificationandmapping resultsof4.91hectares. Correctionfield data andpreviousliterature studiesindicatedthere have been adecline inmangroveareaat1.09during 3 years.The overall necessaryapproaches to conservationandsustainable managementofmangroveecosystem andconservation interestson the Maitara Island. Mangrove merupakan ekosistem penting di daerah pesisir.Meningkatnya exploitasi manusia menurunkan habitat ekosistem mangrove. Tingginya aktivitas mengancam kuantitas ekologi ekosistem mangrove.Tujuan penelitian ini untuk melihat struktur komunitas dan pemetaan ekosistem mangrove. Pengambilan data mangrove dilakukan pada tahun 2015. Hasil penelitian menemukan bahwa komposisi jenis mangrove yang ditemukan terdiri dari 3 family dengan 4 spesies. Total keseluruhan kerapatan stasiun yaitu 215.78 batang/hektar, frekuensi 722.22 batang/hektar, tutupan 189.29% dan nilai penting 300 tiap stasiun. Kerapatan dan frekuensi jenis tertinggi ditemukan Rhizopora apicullata, kemudian Avicennia alba, disusul Sonneratia alba dan terendah Sonneratia caseolaris. Tutupan jenis tertinggi diperoleh jenis Sonneratia alba, kemudian Sonneratia caseolaris, disusul  Avicennia alba dan terendah Rhizopora apicullata. Nilai penting tertinggi pada jenis Sonneratia alba, kemudian Rhizopora apicullata, setalah itu Avicennia alba dan terendah adalah jenis Sonneratia caseolaris. Secara umum keseluruhan indeks nilai keanekaragaman jenis mangrove di Pulau Maitara yang diperoleh rendah. Tipe zonasi yang ditemukan bahwa jenis Rhizhopora Sp merupakan penyusun terdepan  hutan  mangrove dari arah laut ke daratan di Pulau Maitara.Luas mangrove yang didapat dari klasifikasi lapangan dan hasil pemetaan sebesar  4.91 hektar. Koreksi data lapangan dan studi literature sebelumnya mengindikasikan telah terjadi penurunan luas mangrove sebesar 1.09 Ha dengan rentan 3 tahun. Sehingga diperlukan pendekatan konservasi dan pengelolaan berkelanjutan untuk kepentingan pelestarian hutan mangrove di Pulau Maitara. 
Struktur komunitas dan pemetaan ekosistem mangrove di pesisir Pulau Maitara, Provinsi Maluku Utara, Indonesia Nebuchadnezzar Akbar; Nasir Haya; Abdurrachman Baksir; Zulhan A. Harahap; Irmalita Tahir; Yunita Ramili; Raismin Kotta
Depik Vol 6, No 2 (2017): August 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.2.6402

Abstract

Mangrove is ecosystem important in coastal area. Human exploited make decrease habitat mangroves ecosystem. The highly activity in this area threaten quantity ecology ecosystem mangroves.The objective of the present study was to examine the ecological indices and mapping of mangrove in coastal region on Maitara Island, North Moluccas.Information about that most important for sustainable mangrove management. The results showed that mangroves composition found that 4 specieses belong to 3 families.total density of stations namely 215.78 tree/hectare, frequency 722.22 tree/hectare, percent cover 189.29% and significantion value 300 every stations. The density and frequency highest of species found Rhizopora apicullata, Avicennia alba, Sonneratia alba. The density and frequency lowest Sonneratia caseolaris. The percent cover highest types derived Sonneratia alba, Sonneratia caseolaris, Avicennia alba and percent lowest is Sonneratia caseolaris. Overall the ecological index analysed diversity of mangroves found is minor. The characterize mangrove zonation that Rhizhopora Sp is aleadingconstituentof mangrove ecosystem from coast to land inthe Maitara Island. Extensivemangroveobtained fromfieldclassificationandmapping resultsof4.91hectares. Correctionfield data andpreviousliterature studiesindicatedthere have been adecline inmangroveareaat1.09during 3 years.The overall necessaryapproaches to conservationandsustainable managementofmangroveecosystem andconservation interestson the Maitara Island. Mangrove merupakan ekosistem penting di daerah pesisir.Meningkatnya exploitasi manusia menurunkan habitat ekosistem mangrove. Tingginya aktivitas mengancam kuantitas ekologi ekosistem mangrove.Tujuan penelitian ini untuk melihat struktur komunitas dan pemetaan ekosistem mangrove. Pengambilan data mangrove dilakukan pada tahun 2015. Hasil penelitian menemukan bahwa komposisi jenis mangrove yang ditemukan terdiri dari 3 family dengan 4 spesies. Total keseluruhan kerapatan stasiun yaitu 215.78 batang/hektar, frekuensi 722.22 batang/hektar, tutupan 189.29% dan nilai penting 300 tiap stasiun. Kerapatan dan frekuensi jenis tertinggi ditemukan Rhizopora apicullata, kemudian Avicennia alba, disusul Sonneratia alba dan terendah Sonneratia caseolaris. Tutupan jenis tertinggi diperoleh jenis Sonneratia alba, kemudian Sonneratia caseolaris, disusul  Avicennia alba dan terendah Rhizopora apicullata. Nilai penting tertinggi pada jenis Sonneratia alba, kemudian Rhizopora apicullata, setalah itu Avicennia alba dan terendah adalah jenis Sonneratia caseolaris. Secara umum keseluruhan indeks nilai keanekaragaman jenis mangrove di Pulau Maitara yang diperoleh rendah. Tipe zonasi yang ditemukan bahwa jenis Rhizhopora Sp merupakan penyusun terdepan  hutan  mangrove dari arah laut ke daratan di Pulau Maitara.Luas mangrove yang didapat dari klasifikasi lapangan dan hasil pemetaan sebesar  4.91 hektar. Koreksi data lapangan dan studi literature sebelumnya mengindikasikan telah terjadi penurunan luas mangrove sebesar 1.09 Ha dengan rentan 3 tahun. Sehingga diperlukan pendekatan konservasi dan pengelolaan berkelanjutan untuk kepentingan pelestarian hutan mangrove di Pulau Maitara. 
Struktur komunitas dan pemetaan ekosistem mangrove di pesisir Pulau Maitara, Provinsi Maluku Utara, Indonesia Nebuchadnezzar Akbar; Nasir Haya; Abdurrachman Baksir; Zulhan A. Harahap; Irmalita Tahir; Yunita Ramili; Raismin Kotta
Depik Vol 6, No 2 (2017): August 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.2.6402

Abstract

Mangrove is ecosystem important in coastal area. Human exploited make decrease habitat mangroves ecosystem. The highly activity in this area threaten quantity ecology ecosystem mangroves.The objective of the present study was to examine the ecological indices and mapping of mangrove in coastal region on Maitara Island, North Moluccas.Information about that most important for sustainable mangrove management. The results showed that mangroves composition found that 4 specieses belong to 3 families.total density of stations namely 215.78 tree/hectare, frequency 722.22 tree/hectare, percent cover 189.29% and significantion value 300 every stations. The density and frequency highest of species found Rhizopora apicullata, Avicennia alba, Sonneratia alba. The density and frequency lowest Sonneratia caseolaris. The percent cover highest types derived Sonneratia alba, Sonneratia caseolaris, Avicennia alba and percent lowest is Sonneratia caseolaris. Overall the ecological index analysed diversity of mangroves found is minor. The characterize mangrove zonation that Rhizhopora Sp is aleadingconstituentof mangrove ecosystem from coast to land inthe Maitara Island. Extensivemangroveobtained fromfieldclassificationandmapping resultsof4.91hectares. Correctionfield data andpreviousliterature studiesindicatedthere have been adecline inmangroveareaat1.09during 3 years.The overall necessaryapproaches to conservationandsustainable managementofmangroveecosystem andconservation interestson the Maitara Island. Mangrove merupakan ekosistem penting di daerah pesisir.Meningkatnya exploitasi manusia menurunkan habitat ekosistem mangrove. Tingginya aktivitas mengancam kuantitas ekologi ekosistem mangrove.Tujuan penelitian ini untuk melihat struktur komunitas dan pemetaan ekosistem mangrove. Pengambilan data mangrove dilakukan pada tahun 2015. Hasil penelitian menemukan bahwa komposisi jenis mangrove yang ditemukan terdiri dari 3 family dengan 4 spesies. Total keseluruhan kerapatan stasiun yaitu 215.78 batang/hektar, frekuensi 722.22 batang/hektar, tutupan 189.29% dan nilai penting 300 tiap stasiun. Kerapatan dan frekuensi jenis tertinggi ditemukan Rhizopora apicullata, kemudian Avicennia alba, disusul Sonneratia alba dan terendah Sonneratia caseolaris. Tutupan jenis tertinggi diperoleh jenis Sonneratia alba, kemudian Sonneratia caseolaris, disusul  Avicennia alba dan terendah Rhizopora apicullata. Nilai penting tertinggi pada jenis Sonneratia alba, kemudian Rhizopora apicullata, setalah itu Avicennia alba dan terendah adalah jenis Sonneratia caseolaris. Secara umum keseluruhan indeks nilai keanekaragaman jenis mangrove di Pulau Maitara yang diperoleh rendah. Tipe zonasi yang ditemukan bahwa jenis Rhizhopora Sp merupakan penyusun terdepan  hutan  mangrove dari arah laut ke daratan di Pulau Maitara.Luas mangrove yang didapat dari klasifikasi lapangan dan hasil pemetaan sebesar  4.91 hektar. Koreksi data lapangan dan studi literature sebelumnya mengindikasikan telah terjadi penurunan luas mangrove sebesar 1.09 Ha dengan rentan 3 tahun. Sehingga diperlukan pendekatan konservasi dan pengelolaan berkelanjutan untuk kepentingan pelestarian hutan mangrove di Pulau Maitara. 
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%).