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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 562 Documents
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Kajian suhu permukaan laut mengunakan data satelit Aqua-MODIS di perairan Jayapura, Papua Baigo Hamuna; Yunus P. Paulangan; Lisiard Dimara
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.4.3.3055

Abstract

Abstract. Information about sea surface temperature (SST) very important role in ocean and fisheries study. Aqua-MODIS satellite data very important to monitoring SST periodically exchange. The aim or this study to analyze temporal distribution and spatial SST in Jayapura waters of Papua Province. SST data from Aqua-MODIS satellite used on June 2011 to May 2015 period. Descriptive analysis on this research consist of temporary SST analysis base on monthly and seasonal fluctuating of SST in time series graph, and spatial analyze base on color degradation visualization on monthly average SST distribution map. The result show that temporal pattern variations in Jayapura waters experience decreasing in four years of monthly SST. Variations of SST in Jayapura waters are 25°C-31°C with dominant SST revolve 27°C-29°C. The maximum SST value in November (29.25°C) and the minimum in March (27.86°C). Variability of SST value in Jayapura waters be affected by moonson. SST value on east monsoon and intermediate II tend more higher than SST on west monsoon and intermediate I. Spatial distribution of SST in offshore tends highly than spatial distributions near from coastal.Keywords: SST; Aqua-MODIS; Variability Temporal and Spatial; Jayapura WatersAbstrak. Informasi suhu permukaan laut (SPL) dalam bidang kelautan dan perikanan memiliki peran yang sangat penting. Data satelit Aqua-MODIS sangat baik untuk pemantauan perubahan SPL secara berkala. Tujuan penelitian ini adalah menganalisis sebaran temporal dan spasial SPL di perairan Jayapura, Papua. Data yang digunakan adalah data SPL dari sensor satelit Aqua-MODIS periode Juni 2011 sampai Mei 2015. Analisis data yang digunakan adalah analisis deskriptif yang meliputi analisis SPL secara temporal berdasarkan fluktuasi SPL bulanan dan musiman dalam bentuk grafik deret waktu, dan analisis spasial berdasarkan visualisasi degradasi warna pada peta sebaran rata-rata SPL bulanan. Hasil penelitian menunjukan bahwa variasi temporal SPL bulanan di perairan Jayapura selama empat tahun cenderung mengalami penurunan. Nilai SPL di perairan Jayapura bervariasi antara 25°C-31°C dengan SPL dominan berkisar antara 27°C-29°C. Nilai SPL maksimum terjadi pada bulan November (29.25°C) dan minimum pada bulan Maret (27.86°C). Variabilitas nilai SPL di perairan Jayapura dipengaruhi oleh musim, SPL pada musim timur dan musim peralihan II cenderung lebih tinggi dibandingkan dengan SPL pada musim barat dan musim peralihan I. Sebaran spasial SPL di perairan lepas pantai cenderung lebih tinggi dibandingkan dengan SPL di perairan dekat pesisir.Kata kunci : SPL; Aqua-MODIS; Variabilitas Temporal dan Spasial; Perairan Jayapura
Kajian potensi perairan dangkal untuk pengembangan wisata bahari dan dampak pemanfaatannya bagi masyarakat sekitar (studi kasus Pulau Semak Daun sebagai daerah penunjang kegiatan wisata Pulau Pramuka Kabupaten Administrasi Kepulauan Seribu) Triyadi Purnomo; Sigid Hariyadi; Yonvitner .
Depik Vol 2, No 3 (2013): December 2013
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.2.3.992

Abstract

Abstract. Semakdaun and Pramuka are islands in kepulauan seribu administrated regency of Jakarta province that have typical resources and become tourism destination, by means this research choose semak daun and pramuka to be research place. This research purpose is study potential recourshe in shallow water of Semak Daun island for increasing marine tourism in Pramuka island, and to know impact of increasing marine tourism to economy and social of local people.  This research was conducted on Mei 2013 up to July 2013. The method of this research is descriptive quantitative analysis calculations using percent cover of coral, abundance of reef fish, suitability index of marine tourism, marine tourism area carrying capacity, analysis of Marine Tourism Economic Impact on the community using a multiplier effect . The results obtained from this study are: first, percent cover of coral communities on the Semak daun island categorized from moderate to very good and it ranged between 29.67 % -77.66 %. Second, Semak Daun Island area suitable for diving tourism activities, snorkeling , and beach tourism carrying capacity for diving site is 98 people / day and for snorkling is 242 people / day . Third, Tourists Visitor in Pramuka island has increased which in 2012 reached 36 218 visitors . Fourth, marine tourism activities in Semak Daun island and pramuka Island put up economic impact for society as service user and tourism workers by increasing income the value of Keynesian Local Income Multiplier 1.09, Type I Multiplier Income Ratio is 1.10 and Ratio Income Multiplier, Type II is 1.27.Keywords : Semak Daun island, marine tourism, Pramuka island, carrying capacity, multiplier effect Abstrak. Pulau Semak Daun dan Pulau Pramuka merupakan pulau yang ada di Provinsi Daerah Khusus Ibukota Jakarta tepatnya di Kabupaten Administrasi Kepulauan Seribu  yang memiliki sumberdaya alam yang khas dan menjadi salah satu tujuan wisatawan, oleh karena itu penelitian ini memilih Pulau Semak Daun dan Pulau Pramuka menjadi tempat kajian penelitian. Tujuan penelitian ini adalah  mengkaji Potensi Sumberdaya di perairan dangkal Pulau Semak Daun untuk pengembangan kegiatan wisata bahari Pulau Pramuka dan memprediksi dampak pengembangan wisata bahari terhadap kondisi sosial dan ekonomi masyarakat setempat. Penelitian ini telah dilaksanakan pada bulan Mei 2013 – Juli 2013.   Metode yang digunakan pada penelitian ini adalah deskriptif kuantitatif dengan menggunakan analisis perhitungan persen tutupan komunitas karang, kelimpahan ikan karang, indeks kesesuaian wisata bahari, daya dukung kawasan wisata bahari, dan analisis Dampak Ekonomi Wisata Bahari terhadap masyarakat menggunakan multiplier efect. Hasil yang diperoleh dari penelitian ini yaitu persen tutupan komunitas karang di Pulau Semak Daun di kategorikan dari sedang sampai sangat baik yaitu berkisar antara 29,67%-77,66%, kawasan Pulau Semak Daun sesuai untuk aktivitas wisata selam dan snorkling dengan daya dukung kawasan untuk wisata selam 98 orang/hari, snorkling 242 orang/hari, Wisatawan yang berkunjung ke Pulau Pramuka mengalami peningkatan yakni pada tahun 2012 mencapai 36.218 pengunjung; dan kegiatan wisata bahari Pulau Semak Daun dan Pulau Pramuka memberi dampak terhadap peningkatan ekonomi masyarakat sebagai penyedia jasa dan pekerja wisata yaitu bertambahnya pendapatan dengan nilai Keynesian Local Income Multiplier 1,09, Ratio Income Multiplier Tipe I adalah 1,10 dan Ratio Income Multiplier, Tipe II adalah 1,27.Kata Kunci :  Pulau Semak Daun, Wisata Bahari, Pulau Pramuka, daya dukung, Multiplier efect.
Round scad quality on mini purse seine boats, Rembang Regency, Central of Java Rejeki, Sri Untari Puji; Darmanto, Y.S.; Dewi, Eko Nurcahya; Mulyandari, Nunik; Darmawan, Darmawan; Himam, M. Iqbal; Nazaruddin, Nazaruddin; Syahputra, Jasnur
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 2 (2023): AUGUST 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.2.27130

Abstract

Mini purse seine boats in Rembang are divided into two sizes. The first one, namely mini purse seines measuring 10 - 20 Goss Tonnage (GT) (short trips) with a fishing operation duration of 3 - 7 days. The second one is mini purse seines measuring 21 - 30 GT (long trips) with a fishing operation duration of 7 - 10 days. The dominant catch on this boats is round scad, which used a cooling mechanism with ice blocks and bulking systems. This research evaluates the quality of round scad caught by mini purse seine boats (based on Indonesian National Standard/SNI 2729: 2013) and the quality of ice used in handling the fish (based on SNI 4872: 2015). The sampling technique was purposive sampling. Fish samples were carried out in the first and last hold on the short trips and long trips boats, where each handle of the fish was sampled in the upper, middle, and lower layers. Data analysis for sensory evaluation were analyzed by Kruskal Wallis statistics, while the TPC value of round scad was tested by ANOVA test. The laboratory test results obtained the sensory assessment of round scad. The value of the TPC round scad and the E. coli ice blocks are still within the limits of the Indonesian national standards, but the TPC scale of the ice block exceeds the standard limit of SNI. The Kruskal Wallis statistics results showed tha the difference in fish hold, the difference in the trip, and differences in fish hold layers had a significant effect on the sensory of scad. ANOVA test showed that differences in the fish hold and trip differences had a significant impact on the TPC of scad. In contrast, the difference in fish hold layers gave a non-significant effect on the TPC of round scad.Keywords:Quality organolepticTPcRound scadMini purse seineRembang
The incubation of Tinfoil barb (Barbonymus schwanenfeldii) eggs using funnel system at different temperatures Siska Mellisa; Rizki Danang Ramadhan; Iwan Hasri; Nurfadillah Nurfadillah
Depik Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.1.24768

Abstract

Tinfoil barb (Barbonymus schwanenfeldii) is freshwater fish found in Borneo, Java, and Sumatera including in Aceh Province waters. It is known as a native species in Indonesia, locally known as Tengadak or Lampan and this species is popular for consumption due to its taste.  Tinfoil barb is targeted species of inland water for fisheries production. In recent years, the fish population has declined because of overexploitation and habitat degradation. Therefore, this study aimed to analyze the effects of temperature on Tinfoil barb (B. schwanenfeldii) eggs incubation using a funnel system. It was conducted at Balai Benih Ikan (BBI) Lukup Badak, Central Aceh Regency. The Completely Randomized Design was used as a statistical analysis method with four treatments and three replications at 22±1 oC, 25±1 oC, 28±1 oC, and 31±1 oC. Hatching was carried out using a funnel system with 100 grain/liter of eggs density for incubation. The parameters measured were hatching time and rate, egg yolk absorption time, the survival rate of the embryo, larvae abnormality, and water quality. The ANOVA test results showed that temperature significantly affected hatching time and rate, egg yolk absorption time, and larvae abnormality (P0.05). In contrast, the effect was insignificant on the survival rate of an embryo, with P0.05. It is concluded that the optimum temperatures for Tinfoil barb eggs incubation were about 25±1 oC–31±1 oC. A funnel system was more effective for incubation than the conventional system.Keywords:Tinfoil barbFishIncubationTemperatureFunnel System
Analisis dampak ENSO terhadap debit aliran DAS Cisangkuy Jawa Barat menggunakan model Rainfall-Runoff Yopi Ilhamsyah
Depik Vol 1, No 3 (2012): December 2012
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.1.3.107

Abstract

Abstract. A study of analysis of ENSO impact on streamflow of Cisangkuy watershed West Java using Rainfall-Runoff model was done. The study was analyzed by using GR4J model. Daily rainfall and potential evaporation are model initial data. The model was tested for 2 years running by applying least square error method provided by spreadsheet application to reduce the initial value problem. The model showed a good result with Nash-Sutcliffe Efficiency of 70.0. The model was then simulated for 5 years. Monthly streamflow which is model output was then analyzed. The ENSO impact was done by identifying SOI to the variability of rainfall and streamflow. The model result showed that during La-Niña year in 2000, streamflow decreased below normal. The situation remain question that need to be further investigated. During normal year from 2001 to 2004, streamflow was normal. However, during El-Niño year, the decreasing rainfall also have an effect on the decreasing of streamflow in Cisangkuy watershed. The result also showed that the correlation between climate anomaly Nino 3.4 and variability of rainfall and streamflow is significant with correlation coefficient of -0.69 and -0.30, respectively. The regression model was governed and was then utilized to predict the risk analysis in Cisangkuy watershed by using stochastic spreadsheet under Crystal Ball application.
Phytoplankton Abundance and Distribution Chloropyll-a in Reservoir Lubis, Syahnan Aly; Pratiwi, Niken Tunjung Murti; Effendi, Hefni
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 13, No 1 (2024): APRIL 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.1.33923

Abstract

Organic matter entering through the inlet and activities in the Koto Panjang Reservoir body is feared to be the main source of nutrient contribution in the form of nitrogen (N) and phosphate (P) for reservoir waters. Nutrients N and P are utilised by phytoplankton in the photosynthesis process. If this condition continues, it is feared that it will affect water quality (blooming algae) which has an impact on aquatic biota. This study aims to determine the type and abundance of phytoplankton along with the distribution of chlorophyll a in reservoir waters. This study used descriptive, qualitative and quantitative methods and analysed the distribution of chlorophyll a using surfer software. Based on the results of the study, it is known that water quality is relatively good with temperatures ranging from 26-310C, brightness ranging from 0.69-1.96 m, dissolved oxygen (DO) is 5.60-6.80 mg/L and turbidity is 1-6 NTU. The results showed that phytoplankton composition was composed of 5 classes consisting of Euglenophyceae (1 species), Cyanophyceae (3 species), Conjugatophyceae or Zygnematophyceae (4 species), Chlorophyceae (4 species) and Bacillariophyceae (10 species). The dominating class in the reservoir zonation is different. In the riverine zone the Bacillariophyceae class dominates by 60.06%, in the transition zone the Cyanophyceae class by 91.60% and in the lacustrine zone the dominating class is Conjugatophyceae or Zygnematophyceae by 78.69%. Phytoplankton abundance ranged from 166.5-2,193 sell/m3. The highest abundance was located in the lacustrine zone and the lowest abundance in the riverine zone. The distribution of chlorophyll a in Koto Panjang Reservoir is varied, the highest distribution is located in the transition zone to the lacustrine zone.
Detection parasites of Indian Mackerel (Rastrelliger kanagurta) in North Sumatera, Indonesia Eri Yusni; Luvi Syafrida Handayani
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.26814

Abstract

The purpose of this study was to identify ectoparasites and their prevalence infecting Rastrelliger kanagurta in North Sumatera, Medan. So far, people use this fish as a processed product. The method used in this study is a survey method with direct collection at the research site. Samples were taken using random sampling technique. Sampling was carried out in five places in Belawan with the number of samples studied as many as 30 individuals with an average length of 25.3 cm and a weight of 193.7 grams. Identification was carried out in a laboratory using a light microscope at the Faculty of Agriculture, University of North Sumatra. The results of this study found seven types of parasites that infect the surface in the muscles, fins and gills. The parasites found in their respective prevalence were infected Dactylogyrus sp. 13.33% was found in muscus, Austrobdella sp. 30% found in fin. While the parasites found in the gills were Zoothamnium sp as much as 6.67%, Diphyllobothrium sp as much as 16.67%, Rhadinorynchus sp. 53.33%, Camallanus sp. 20% and Anisakis sp. 3.33%. Rhadinorynchus sp. is the parasite with the highest prevalence rate, found on the scales, gills and fins respectively of mackerel.
Fishing season of large pelagic fish in Idi Rayeuk waters, East Aceh, Indonesia M.A. Chaliluddin; Rizka Alfita; Thaib Rizwan; Rahmat Rizqi; Rosi Rahayu; Sayyid Afdhal El Rahimi; Ichsan Rusydi
Depik Vol 10, No 2 (2021): August 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.2.21203

Abstract

Large pelagic fish live on the water surface in groups. Skipjack tuna (Katsuwonus pelamis), yellowfin tuna (Thunnus albacares), mackerel tuna (Euthynnus affinis), mackerel (Scomberomous guttatus) are species of fishes that mainly catches by fishermen using purse seines. This study aims to determine the length and weight of large pelagic fish in the water of Idi Rayeuk and best the fishing season. This research was conducted in one month. Fish samples were collected from fishermen that used purse seine and landed their catches at the Idi Rayeuk Fishing Port, East Aceh. Additionally, the data was derived from the fishing port time-series during 2015 to 2019. The result showed that the yellowfin tuna (Thunnus albacares) has a length between 37 - 58 cm with a weight of 1.0 - 3.2 kg, skipjack tuna (Katsuwonus pelamis) 32 - 58 cm in length and weight 0.5 - 3.0 kg, mackerel tuna has 33 - 54 cm of length with a weight of 0.6 - 2.5 kg, and mackerel has 44 - 66 cm of length and weighing 0.7 - 1.7 kg. Its also found that the peak season for catching yellowfin tuna (Thunnus albacares) and mackerel tuna is May and June, and the lowest season in December for the yellowfin tuna, and December and January for the mackerel tuna. The peak season for skipjack fishing occurs in May, August, and October, and the low season occurs in November and December. Meanwhile, the peak season for fishing mackerel occurs in May, September, and October, while the low season occurs in January, February, and March.Keywords:Fishing seasonLarge pelagicPurse seineIdi RayeukAceh
Strategi implementasi teknologi biofloc dalam budidaya udang putih Litopenaeus vannamei di Provinsi Lampung Supono Supono
Depik Vol 8, No 3 (2019): December 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.8.3.13652

Abstract

Abstract. Biofloc technology in shrimp farming is a new technology that has advantages over other technologies. Biofloc technology can maintain water quality, especially ammonia and pH, suppress Vibrio growth, enhance immunity, and as natural food for shrimp. The application of this technology in shrimp farming still faces several obstacles, so not all farmers apply it. This study aims to evaluate the application of biofloc systems in white shrimp farming and formulate appropriate strategies to increase farmer productivity. The study was conducted using the survey and interview method for the perpetrators of white shrimp cultivation in Lampung Province. Collected data were strengths, weaknesses, opportunities, and threats of the application of biofloc technology in the cultivation of white shrimp. The obtained data were analyzed descriptively, while the formulation of strategies was conducted using SWOT analysis. The results showed that shrimp culture technology with biofloc technology has good prospects for increasing shrimp production. However, biofloc technology also has weaknesses that can lead to the failure of shrimp farming. The application of white shrimp biofloc technology was in quadrant I (aggressive) where this system has a good internal strength to capture existing external opportunities (SO strategy). Internal strengths include a high survival rate, relatively faster growth, environmentally friendly, able to minimize disease agents that enter the culture system, and lower feed conversion, while the opportunities they have include: shrimp prices are relatively high, there is a revitalization program unproductive ponds by the government, the issue of eco-labeling, and the growing demand for shrimp exports.Keywords: SWOT analysis, water quality, strategy, shrimp production, aggressive  Abstrak. Teknologi biofloc dalam budidaya udang merupakan teknologi baru yang memiliki keunggulan dibandingkan teknologi lainnya.  Teknologi biofloc dapat menjaga kualitas air terutama amoniak dan pH, menekan pertumbuhan Vibrio, meningkatkan imunitas, serta sebagai pakan alami bagi udang.  Penerapan teknologi ini dalam budidaya udang masih mengalami beberapa kendala, sehingga tidak semua petambak menerapkannya.  Penelitian ini bertujuan untuk mengevaluasi penerapan sistem biofloc  dalam budidaya udang putih dan merumuskan strategi yang tepat untuk meningkatkan produktivitas petambak. Penelitian dilakukan dengan metode surve dan wawancara terhadap pelaku budidaya udang  putih di Provinsi Lampung.  Data yang dikumpulkan berupa kekuatan (strength), kelemahan (weakness), peluang (opportunity) dan ancaman (threat) penerapan teknologi biofloc dalam budidaya udang putih.  Data yang diperoleh dianalisis secara deskriptif, sedangkan perumusan strategi menggunakan   analsis SWOT.  Hasil penelitian menunjukkan bahwa teknologi budidaya udang dengan teknologi biofloc mempunyai prospek yang baik untuk meningkatkan produksi udang.  Namun demikian,  teknologi biofloc juga memiliki kelemahan yang dapat menimbulkan kegagalan budidaya udang. Penerapan teknologi  biofloc udang putih berada pada kuadran I (agresif) dimana sistem ini mempunyai kekuatan internal yang baik untuk menangkap peluang eksternal yang ada (strategi SO).  Kekuatan internal yang dimiliki antara lain: tingkat kelulushidupan tinggi, pertumbuhan relatif lebih cepat, ramah lingkungan, mampu meminimalisir agen penyakit yang masuk dalam sistem budidaya, dan konversi pakan lebih rendah, sementara peluang yang dimiliki antara lain: harga udang relatif tinggi, adanya program revitalisasi tambak yang tidak produktif oleh pemerintah, adanya isu eco labeling, serta permintaan ekspor udang yang terus meningkat.Kata kunci: Analisis SWOT, kualitas air, strategi, produksi udang, agresif
Distribusi karang keras (Scleractinia) sebagai penyusun utama ekosistem terumbu karang di Gosong Karang Pakiman, Pulau Bawean Oktiyas Muzaky Luthfi; Prima Tegar Anugrah
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.6.1.5461

Abstract

The objective of this research was to assess the condition and distribution of stony corals Scleractinian order at Karang Pakiman reef, Bawean Islands, Gresik. This research was conducted in May 2014. The biophysical conditions of coral reefs data were collected using line transect that placed on a line with the coastline, following the depth contours of the bottom waters and the geographical position was determined with GPS. The result showed that the condition of coral reefs in the study site was varied on the status of bad to good. Scleractinian coral in Karang Pakiman, Bawean spread over reef flat, reef crest, and reef slope zones. The main component of the coral reef at Karang Pakiman was Acroporidae, Faviidae, and Poritidae, while Poritidae and Faviidae family which were dominated by the coral massive (CM) life form and to be a constituent of coral reef ecosystems in the study site. The Diversity Index (H') was 1.72; Evenness Index (E) was 0.58, and Dominance Index (C) was 0.62. Penelitian ini bertujuan untuk menganalisis kondisi dan distribusi karang keras Ordo Scleractinia di gosong Karang Pakiman, Pulau Bawean, Gresik. Penelitian ini dilaksanakan pada Bulan Mei 2014 di perairan Pulau Bawean, Gresik. Metode yang digunakan dalam penelitian ini adalah metode penelitian survei / deskriptif. Materi penelitian adalah karang keras yang diidentifikasi sampai tingkat spesies. Pengumpulan data kondisi bio – fisik terumbu karang dilakukan dengan menggunakan transek garis dan transek kuadran yang diletakkan sejajar garis pantai, mengikuti kontur dasar perairan. Posisi geografis penelitian ditentukan dengan GPS. Hasil analisis memperlihatkan kondisi terumbu karang di lokasi penelitian berada pada status buruk sampai dengan baik. Karang keras di gosong Karang Pakiman, Pulau Bawean tersebar pada zona reef flat, reef crest, dan reef slope. Penyusun utama ekosistem terumbu karang pada lokasi penelitian terdiri dari 3 famili, yaitu Acroporidae, Faviidae, dan Poritidae. Life form CM yang didominasi oleh famili Poritidae dan Faviidae merupakan bentuk pertumbuhan utama karang keras penyusun ekosistem terumbu karang di lokasi penelitian. Nilai H’ adalah 1,72; nilai E adalah 0,58 dan nilai C adalah 0,62. 

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