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Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Published by Universitas Syiah Kuala
ISSN : 20897790     EISSN : 25026194     DOI : 10.13170/depik
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan is a peer review international journal, this journal is publishing high-quality articles in aquatic sciences and fisheries in general. The aim of the journal is to publish and disseminate the current or new findings of the research, and give a significant contribution to the development of fisheries and aquatic sciences in several topics, but not limited to: Fisheries (Aquaculture, Capture Fisheries, Fish Processing) Aquatic Ecology (Freshwater, Marine, and Brackishwater) Aquatic Biology (Fish, Mollusk, Crustacean, Plankton, Coral reefs) Oceanography.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 563 Documents
 41   42   43   44   45 
Senyawa polisiklik aromatik hidrokarbon (PAH) dalam air laut di Teluk Jakarta Edward .
Depik Vol 3, No 3 (2014): Desember 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.3.3.2146

Abstract

Research on polycyclic aromatic hydrocarbons (pah)s compound at Jakarta Bay seawater were carried out on July 2011. The objectives of this research were to measure the concentration of total polycyclic aromatic hydrocarbons (PAH) compound, concentration of individual PAH compound, and to identify sources of PAH compound in seawater. PAH compound concentration was measured by Gas Chromatography (Gas Chromatography-Flame Ionization Detector) and sources of polycyclic aromatic hydrocarbons compound were identified by diagnostic ratio analysis. The results show that the concentration of PAH compound in the middle of Jakarta Bay was higher compared to the west and the east. In the west and middle of Jakarta Bay, it is found that 11 PAH types, and 10 types in the east. Individual PAH compound dominated by high moleculer weight of PAH Benzo(a)Anthracene, Chrysene, Benzo(b)Fluoranthene, Benzo(a)Pyrene, dan Indeno(123-cd) Pyrene. The results of PAH compound ratio individual analysis showed that polycyclic aromatic hydrocarbons compound at Jakarta Bay seawater came from oil spill and incomplete combustion mixture of organic material such as wood, grass, fuel oil, and fuel industry combustion activity.
Karakteristik mutu dan keamanan ikan kembung (Rastrelliger sp) pada pasar domestik di DKI Jakarta Resmi Rumenta Siregar; Sugeng Hari Wisodo; Tri Wiji Nuraini; Sugeng Heri Suseno
Depik Vol 9, No 3 (2020): December 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.9.3.17542

Abstract

Mackerel (Rastrelliger sp) is one of small pelagic fish that contribute animal protein intake for local community, so its quality and safety prior to be considered and maintained as follows. In this study analyzes the quality attribute and food safety of mackerel throughout the distribution chain for domestic consumption in Jakarta Province were investigated, from the fish landing, fish auction, wholesale markets, restaurants, supermarkets, until traditional markets. Field observations were used during the investigation, by taking mackerel samples at each distribution chain and testing at the laboratories. Quality characteristics were done by organoleptic test and formaldehyde content were showed the safety level of each samples. The organoleptic parameters revealed that from 100% of samples were taken from fish landing, wholesale market and restaurant comply with Indonesian National Standart, while at the supermarkets and at traditional markets was 77,42%, and 64,78% respectively. This consequently led to an increase of formaldehyde hazardous materials that exhibit during the distribution chain (4 samples from wholesale markets, 6 samples from supermarkets, and 57 samples from traditional markets). The concentrations of formaldehyde in the positive samples at three location mentioned above from 1.0-5.4 ppm, 2.5-6.6 ppm, and 0.2 - 13.4 ppm respectively. Mackerel collected from local markets had lower level of quality and safety compared to those from other locations. Monitoring of using formaldehyde for fresh fish during distribution and marketing need to be conserned.Keywords:domestic, formaldehyde, organoleptic, Quality, Rastrelliger sp.ABSTRAKIkan kembung merupakan salah satu jenis ikan pelagis kecil yang banyak diminati oleh masyarakat DKI Jakarta sehingga mutu dan keamanannya menjadi salah satu prioritas penting yang perlu diperhatikan. Penelitian ini bertujuan untuk menganalisis mutu dan keamanan ikan kembung di sepanjang rantai distribusi untuk konsumsi domestik di wilayah Provinsi DKI Jakarta, mulai dari Pangkalan Pendaratan Ikan (PPI), Tempat Pelelangan Ikan (TPI), pasar grosir, restoran, pasar swalayan dan pasar tradisional. Metode penelitian yang digunakan adalah observasi lapang dengan melakukan pengambilan sampel ikan kembung pada setiap rantai distribusi dan pengujian di laboratorium. Karakteristik mutu diuji secara organoleptik dan keamanannya diuji dengan parameter kandungan formalin. Hasil penelitian menunjukkan bahwa persentase sampel yang memenuhi standar organoleptik (minimal 7) pada tahap pembongkaran, pasar grosir dan restoran adalah sebesar 100%, pada pasar swalayan dan pada pasar tradisional berturut-turut sebesar 77,42% dan 64,78%. Ikan kembung yang positif mengandung bahan berbahaya formalin masih ditemukan pada pasar grosir (4 sampel), dengan konsentrasi 2,5 – 6,6 ppm, pada pasar swalayan (6 sampel), dengan konsentrasi 1,0 – 5,4 ppm, dan pada pasar tradisional (57 sampel), dengan konsentrasi 0,2 – 13,4 ppm. Ikan kembung yang diambil dari pasar tradisional memiliki mutu dan keamanan yang lebih rendah dibandingkan dengan lokasi lainnya. Pengendalian terkait penggunaan bahan berbahaya formalin pada ikan segar selama distribusi dan pemasaran terutama pada pasar tradisional perlu ditingkatkan.Kata kunci:domestik,formalin,organoleptik, mutu, Rastrelliger sp.
Analisis BOD dan COD di perairan estuaria Krueng Cut, Banda Aceh Muhammad Irham; Fauzul Abrar; Viqqi Kurnianda
Depik Vol 6, No 3 (2017): December 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.3.8481

Abstract

Analysis of BOD and COD has been done at estuary of Cut River in Alue Naga Village from March to April 2017. The purpose of this research was to analysis the water quality in Krueng Cut estuarial area, which is compared to the Government Regulation No. 82/2001. The method used in this research is field survey by employing purposive sampling method and laboratory analysis to the samples obtained in the field.The BOD, COD, DO, nitrate, nitrate was tested at Laboratory of Chemistry, Faculty of Marine and Fishery of Syiah Kuala University by applyingspectrophotometric method using Filterfotometer PF-11. The results showed that the highest concentration of BOD and COD was at station 3 where the mixing region occurred because the freshwater from river uphill meets with salt-water from the ocean, and the lowest BOD and COD concentration was at station 7 whichis the mouth of the estuary. The results obtained that water quality in Krueng Cut waters based on Government Regulation of water quality no. 82/2001 on the water quality categorized as a class III water quality, which is the water that can be used only for the function of fishery cultivation.Analisa BOD dan COD telah dilakukan di perairan Krueng Cut Desa Alue Naga yang dilakukan pada bulan Maret sampai dengan April 2017. Tujuan dari penelitian ini adalah untuk mengetahui kualitas air di perairan Krueng Cut Desa Alue Nagayang dibandingkan dengan Peraturan Pemerintah (PP) nomor 82 Tahun 2001.Metoda yang dilakukan dalam penelitian ini adalah survey lapangan dengan metode purposive sampling dan analisa laboratorium terhadap sampel yang diperoleh di lapangan untuk uji BOD, COD, DO, nitrat, nitrit di Laboratorium Kimia Laut Fakultas Kelautan dan Perikanan Universitas Syiah Kualadengan metoda Spektofotometri Filterfotometer PF-11. Hasil penelitian menunjukkan bahwa konsentrasi BOD dan COD tertinggi berada pada stasiun 3 yaitu daerah sirkulasi arus (pertemuan antara arus air tawar dan air asin), dan konsentrasi BOD dan COD terendah berada di stasiun 7 yang merupakan daerah mulut estuari. Hasil penelitian diperoleh bahwa kualitas air di perairan Krueng Cut berdasarkanPeraturan Pemerintah No. 82 Tahun 2001 tentang kualitas air baku mutu dikatagorikan sebagai kualitas air kelas III yaitu air yang dapat digunakan hanya untuk fungsi pembudidayaan perikanan. 
Kontaminasi senyawa poliklorobifenil (PCB) pada kerang hijau, Perna viridis dari Teluk Jakarta Edward Edward
Depik Vol 5, No 1 (2016): APRIL 2016.
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.1.3967

Abstract

The objective of this research was to examine the contamination level of polychlorinated biphenyl compound in green mussels. Green mussels samples were collected in Jakarta Bay in March 2013. Polychlorinated biphenyl level were quantified by gas chromatography HP 5880 series II completely with Electron Capture Detector (ECD). The levels of polychlorinatedbiphenyl in small size mussels was 0.846 ppb, in medium size mussels was 0.854 ppb, and in biger size mussels was 2.018 ppb. These levels were lowercompared to the safe threshold value for seafood which in 2,000 ppb. Therefore the green mussels from Jakarta Bay is safe to consumpt. Penelitian ini bertujuan untuk menentukan tingkat kontaminasi senyawa polikloro bifenil dalam kerang hijau. Contoh kerang hijau dikumpulkan di Teluk Jakarta pada bulan Maret 2013. Kadar polikloro bifenil diukur  dengan alat kromatografi gas HP 5880 series II, yang dilengkapi dengan detektor penangkap elektron (ECD). Kadar polikloro bifenil dalam kerang hijau ukuran kecil adalah 0,846 ppb, kerang ukuran sedang adalah 0,854 ppb dan kerang ukuran besar adalah 2,018 ppb. Kadar ini masih rendah bila dibandingkan dengan nilai ambang batas aman untuk makanan hasil laut yakni 2000 ppb. Hasil penelitian ini diharapkan dapat memberikan informasi kepada masyarakat apakah kerang hijau di Teluk Jakarta ini masih aman untuk dikonsumsi. 
Keragaman ikan di Danau Cala, Kabupaten Musi Banyuasin Sumatera Selatan Jifi Abu Ammar; Mohammad Mukhlis Kamal; Sulistiono .
Depik Vol 3, No 3 (2014): Desember 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.3.3.2147

Abstract

The aim of his studi was to evaluate the fish fauna in Danau Cala in dry season, transition season, and the tide season. The survey was conducted 3 times on July 2013, October 2013 and January 2014 as representative of dry, transition and tide seasons. The fish sampling was conducted by gillnets and fish traps. A total of 35 fish species were recorded during the study; 23 species in dry season, it was dominated by tembakang fish (Helostoma temminckii) from family Helosmatidae, Sepat siam fish(Trichogaster pectoralis) from Belontiidae family, and snakehead fish (Channa striata) of Channidae family. A total of 16 species were recorded on transitional seasons where baung fish (Hemibagrus nemurus) of the family Bagridae, and seluang fish (Rasbora sp) of the family Cyprinidae were predominant. In addition, 15 fish species were recorded on tide season which was dominated by baung fish (Hemibagrus nemurus) and tendon fish (Mystus sabanus) of family Bagridae
Keragaman ikan di perairan ekosistem mangrove Desa Jaring Halus Kabupaten Langkat, Sumatera Utara Dhiandra Puteri; Hasan Sitorus; Ahmad Muhtadi
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.6.2.6656

Abstract

Mangrove areas of Jaring Halus village have the potential of fish resources. Fish found in mangrove ecosystems, both settled and just transit to spawning and nursery will increase biodiversity in these ecosystems. This study aims to determine the diversity of fish species found in the waters of the mangrove areas of Jaring Halus village Langkat District. Sampling was done 3 times in December 2016 - January 2017 with an interval of 2 weeks for a period of two months. Fish samples obtained by using nets to catch fish (Fixed Gill Net) that is attached to the stake. Total fish species were obtained as many as 19 species of fish belonging to the 8 orders, 14 families, and 16 genera. Fish from Family Mugilidae and Ambassidae and Gobiidae always found in every station and at every time of data collection. In station 1 found 12 species, station 2 found 10 species and station 3 found nine types. The first sampling was obtained 11 species of fish, the second sampling found 15 species of fish. In the third sampling found 14 species of fish. The fish was dominated seriding fish (A. buruensis) of family Ambassidae, anchovy spikes (S. heterolobus) of family Engraulidae, and mullets (V. Engeli) of family Mugilidae and Mudskipper (P. Kaloko) of family GobiidaeKawasan perairan mangrove Desa Jaring Halus memiliki potensi sumberdaya ikan. Ikan yang terdapat pada ekosistem mangrove, baik yang menetap atau hanya transit untuk melakukan pemijahan serta memelihara anakannya akan menambah keanekaragaman hayati pada ekosistem tersebut. Penelitian ini bertujuan untuk mengetahui keragaman jenis ikan yang terdapat pada perairan kawasan mangrove. Sampling dilakukan sebanyak 3 kali yakni pada bulan Desember 2016 – Januari 2017 dengan interval kurun waktu 2 minggu selama 2 bulan. Sampel ikan diperoleh dengan cara menangkap menggunakan jaring ikan (Fixed Gill Net) yang ditancapkan dengan pancang. Total jenis ikan yang diperoleh sebanyak 19 jenis ikan yang termasuk ke dalam 8 ordo, 14 famili, dan 16 genus. Ikan dari Famili Mugilidae dan Ambassidae serta Gobiidae selalu ditemukan pada setiap stasiun dan pada setiap kali pengambilan data. Pada stasiun 1 ditemukan 12 jenis, stasiun 2 ditemukan 10 jenis dan stasiun 3 ditemukan 9 jenis. Sampling pertama yang dilakukan diperoleh 11 jenis ikan, sampling kedua ditemukan 15 jenis ikan. Pada sampling ketiga ditemukan 14 jenis ikan. Ikan yang mendominasi adalah ikan seriding (A. buruensis) dari family Ambassidae, ikan teri paku (S. heterolobus) dari family Engraulidae, dan ikan belanak (V. engeli) dari family Mugilidae dan ikan gelodok (P. kaloko) dari family Gobiidae. 
Pemantauan kondisi substrat menggunakan metode reef check di Perairan Selat Sempu, Kabupaten Malang Oktiyas Muzaky Luthfi; I Nyoman Januarsa; Hijrul Fajri; Fadil Muhammad; Nur Akhmad Tri Aji; Sofar Jumantry; Muhammad I. S. K. Ramadhan; Guntoro Ahmad Algadri; Firman Roganda; Mochamad F. A. Rizal; Ary Setyo Wicaksono; Amalia Safrudin Bendang; Albertus N. P. Christianda
Depik Vol 6, No 1 (2017): April 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.1.5840

Abstract

The aim of this research was to know the coral reef condition in Sempu’s strait. This research has beeb conducted at December 2017 used PIT method in four research stations i.e. Teluk Semut 1, Teluk Semut 2, Watu Meja and Fish Apartement. In generally the substrate of Sempu strait was devided into two categories, they were living and non-living substrate. Living substrate include HC, SC, NIA, SP and OT while non-living were RKC, RC, RB, SD and SI. Station 1 was dominated by hard coral (33.75%), station 2 and 3 was by rock (59.38% and 40.63%), and station 4 was dominated by sand (39.38%) respectively. Based on the monitoring, the coral reefs ecosystem of Sempu Strait was categorised in damaged condition. It could be seen by the high covering of dead coral and the low covering of healthy coral along observed stations. The coral reefs rehabilitation program is needed to recover the reefs ecosystem in Sempu Strait.                                                          Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang di Selat Sempu dengan cara mengetahui susunan dari substrat dasar perairannya. Pelaksanaan penelitian ini dilakukan pada Desember 2016 dengan menggunakan metode PIT di empat stasiun penelitian yaitu Teluk Semut 1, Teluk Semut 2, Watu Meja dan Fish Apartement. Hasil dari penelitian ini menunjukkan bahwa substrat dasar perairan di Selat Sempu terbagai atas dua yaitu living (HC, SC, NIA, SP dan OT) dan non-living (RKC, RC, RB, SD dan SI). Stasiun 1 didominasi oleh hard coral (33,75%), stasiun 2 didominasi oleh rock (59,38%), stasiun 3 didominasi oleh rock (40,63%), dan stasiun 4 didominasi oleh sand (39,38%). Berdasarkan monitoring yang telah dilakukan, ekosistem terumbu karang di Selat Sempu telah mengalami kerusakan hal ini dapat dilihat dari tingginya tutupan karang mati dan rendahnya tutupan karang hidup yang ditemukan di sepanjang stasiun penelitian yang dilakukan. Program rehabilitasi terumbu karang sangat diperlukan untuk memulihkan kembali kondisi ekosistem karang di Selat Sempu.
Struktur komunitas ekosistem mangrove di kawasan pesisir Sidangoli Kabupaten Halmahera Barat, Maluku Utara Nebuchadnezzar Akbar; Abdurrachman Baksir; Irmalita Tahir
Depik Vol 4, No 3 (2015): DECEMBER 2015
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.4.3.3052

Abstract

Abstract. Mangroves is important ecosystem in coastal. However, multiple  destructive activities to cause reduced mangrove area. The information about area and criteria of mangrove in Sidangoli coastal area, had been doing, however information ecology mangrove unexplored. This information is required to plan better conservation strategy of mangrove. The study was conducted to infer the ecology of mangrove in the Sidangoli coastal of west halmahera regency, North Mollucas. A total of location diveded by four and perform in November 2014. Mangrove sampling, done by the "spot check". The results showed that mangrove of thickness ranging from 145-750 meters and founded 11 specieses from 5 families of mangroves. The ecology analysis showed that frequency and density of mangrove founded station three. Whereas persent cover contained station four and value sicnificant analysis in all station. The mangrove vegetation analysis contained the high frequency, density and value sicnificant is Rhizopora stylosa and high persent cover Sonneratia alba.the overall observation of mangrove explaided that mangrove ecosystem enter in low/damage criteria.Keywords:  Mangroves;  Rhizopora stylosa; spot check; Sonneratia alba Abstrak. Mangrove merupakan ekosistem penting di kawasan pesisir. Tetapi, berbagai macam aktivitas yang bersifat destruktif telah menurunkan luas penyebaran lahan mangrove. Informasi tentang luas dan kriteria mangrove di kawasan pesisir Sidangoli, Kabupaten Halmahera Barat telah dilakukan. Akan tetapi informasi tentang nilai ekologi mangrove belum dilaporkan, sehingga perlu adanya kajian tentang anailsis ekologi mangrove. Informasi nilai ekologi dapat dijadikan sebagai data untuk dijadikan sebagi acuan dalam merencanakan strategi konservasi. Penelitian ini bertujuan untuk mengetahui nilai ekologi mangrove dikawasan pesisir Sidangoli Kabupaten Halmahera Barat, Maluku Utara. Lokasi penelitian dibagi menjadi empat dan penelitian dilaksanakan pada November 2014. Pengambilan contoh mangrove, di lakukan dengan menggunakan metode “spot chek”. Hasil penelitian menunjukkan ketebalan mangrove berkisar 145-750 meter dan diperoleh sebanyak 11 jenis dari 5 famili mangrove. Analisis ekologi memperlihatkan bahwa nilai total kerapatan dan frekuensi tertinggi ditemukan pada stasiun  tiga. Sedangkan tutupan tertinggi pada stasiun empat serta nilai penting pada setiap stasiun adalah 300. Analisis vegetasi mangrove disetiap stasiun diperoleh kerapatan, frekuensi dan nilai penting jenis tertinggi adalah Rhizopora stylosa serta tutupan jenis tertinggi adalah Sonneratia alba. Total pangamatan jenis mangrove dan jumlah yang tersedia, menggambarkan kondisi ekosistem mangrove di pesisir Sidangoli masuk dalam kategori rendah/rusak.
Performa pertumbuhan post-larva ikan jelawat (Leptobarbus hoevenii) pada berbagai kombinasi pakan alami dan buatan Mas T. D. Sunarno; Mas Bayu Syamsunarno
Depik Vol 6, No 3 (2017): December 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.3.8731

Abstract

The study proposed to evaluate growth performance of post-larvae of jelawat (Leptobarbus hoevenii) fed on varius combination of natural food and artificial feed. Completely randomized design was assigned in this study. The treatments were various combinations of life feed of Moina sp. and artificial diet at a respective rates of 100:0%, 75:25%, 50:50%, 25:75% and 0:100%. The larvae of 20 days in age and 0.0287±0.0012 g  in weight was randomly stocked in 15 buckets at a stocking rate of five larvae per liter or 50 larvae  per bucket and fed on test diet at a feeding rate of 5% per body weight per day, divided in feeding frequency of five times for 45 days of rearing period. The results indicated that 20 days old of larvae jelawat fed on combinations of Moina sp. and artificial diet at 50:50 performed higher survival as well as growth.Tujuan penelitian adalah untuk mengevaluasi performa pertumbuhan post larvae jelawat (Leptobarbus hoevenii) pada berbagai kombinasi pakan alami dan pakan buatan. Rancangan Acak Lengkap digunakan dalam penelitian ini. Perlakuannya adalah berbagai kombinasi pakan alami Moina sp. dan pakan buatan, masing-masing yaitu 100:0%, 75:25%, 50:50%, 25:75% and 0:100%. Larva ikan jelawat umur 20 hari dengan bobot rata-rata 0,0287±0,0012 g ditebar secara acak ke dalam 15 buah ember dengan kepadatan 5 ekor per liter atau 50 ekor per wadah dan diberi pakan uji sebanyak 5% dari bobot tubuh per hari yang dibagi dalam lima kali pemberian selama 45 hari masa pemeliharaan. Hasil penelitian menunjukkan bahwa larva ikan jelawat umur 20 hari mempunyai kelangsungan hidup dan pertumbuhan lebih baik dengan pemberian kombinasi pakan alami Moina sp.. dan pakan buatan sebesar 50% : 50%.
Status ekologis mangrove Pulau Sembilan, Kabupaten Langkat Provinsi Sumatera Utara (Ecological status of mangrove of Sembilan Island, Langkat Regency, North Sumatra Province) Ahmad Muhtadi; Rudi H. Siregar; Rusdi Leidonald; Zulham A. Harahap
Depik Vol 5, No 3 (2016): December 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.3.5656

Abstract

Sembilan Island was one of the 17 islands located in the East Coast of North Sumatra. This island is surrounded by mangrove with varying thickness and density. Information on the identification and potential of mangrove in this island already reported but limited to a narrow area. Information about the value and status of mangrove ecology in this island have not been written, so it was needed to carry out for a study of mangrove ecological analysis. This information could be used later as a reference in sustainable mangrove management. The objective of the study was to determine the value and ecological status of mangroves. The research was conducted in September 2015. The data were collected at 9 sampling points namely; 4 points in the east, 2 points in the south and 3 points in the west part of the study areas. The spot check method was used in the study. The results showed that there were 28 species of mangrove belonging to 13 families. It's divided into  26 species of true mangrove and two species of associated mangroves. Mangrove’s zonation was Avicennia/Sonneratia on the front and ferns (A. Aureum and A. speciosum) in the section near the mainland. Mangrove thickness reached 134 - 1683 m. The density of mangrove was 333 - 4601 individuals/ha with the cover area of 2522 - 5810 cm2/ha. The results of the importance index value of mangrove showed that A. marina has a great influence and role in the community of mangrove vegetation, especially in the eastern part. Therefore, the mangrove in Sembilan Island was categorized into damage to good condition. The good category was recorded in the western part of the island, while the damaged category was found in the east part of the island.Pulau Sembilan merupakan satu diantara 17 pulau yang terdapat di wilayah Pantai Timur Sumatera Utara. Hampir sepanjang pantai di Pulau Sembilan di tumbuhi oleh mangrove dengan ketebalan yang bervariasi. Informasi tentang identifikasi dan potensi mangrove di Pulau Sembilan sudah ada dilaporkan, namun terbatas pada areal yang sempit. Informasi tentang nilai dan status ekologi mangrove di Pulau Sembilan belum dilaporkan, sehingga perlu adanya kajian tentang analisis ekologi mangrove. Informasi ini nantinya dapat dijadikan sebagai acuan dalam pengelolaan mangrove yang berkelanjutan. Penelitian ini bertujuan untuk mengetahui nilai dan status ekologis mangrove di Pulau Sembilan. Lokasi penelitian dibagi menjadi tiga area dengan 9 titik pengamatan yaitu timur 4 titik, selatan 2 titik, dan barat 3 titik. Penelitian dilaksanakan pada September 2015. Pengambilan contoh mangrove, dilakukan dengan menggunakan metode spot check. Hasil penelitian didapatkan bahwa jenis mangrove yang sebanyak 28 jenis dari 13 famili yang terdiri dari 26 jenis mangrove sejati dan 2 jenis mangrove ikutan. Zonasi mangrove di Pulau Sembilan yaitu, Avicennia/Sonneratia pada bagian depan dan paku-pakuan (A. Aureum dan A. speciosum) pada bagian yang dekat daratan. Ketebalan mangrove mencapai 134 - 1683 m. Kerapatan mangrove yang ditemukan mencapai 333 - 4601 ind/ha. Penutupan mangrove mencapai 2522 - 5810 cm2/ha. Hasil analisis nilai penting jenis mangrove di Pulau Sembilan menunjukkan bahwa A. marina memiliki pengaruh dan peran yang besar dalam komunitas vegetasi mangrove, terutama pada bagian timur. Mangrove di Pulau Sembilan termasuk kategori rusak - baik. Kategori baik pada bagian barat dan rusak pada bagian timur.

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