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Ichsan Setiawan
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+6285220189228
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depik@usk.ac.id
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Faculty of Marine and Fisheries Universitas Syiah Kuala Jalan Meureubo No. 1, Kopelma Darussalam Banda Aceh, 23111, Indonesia
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Kab. aceh besar,
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INDONESIA
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
ISSN : 20897790     EISSN : 25026194     DOI : 10.13170/depik
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.
Articles 563 Documents
Relationship between water mass characters to Sound velocity profiler (SVP) in the Sulawesi Sea Agustinus, Agustinus; Pranowo, Widodo Setiyo; Manik, Henry Munandar; Rahmatullah, Amri; Aji, Tri
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.32296

Abstract

The Sulawesi Sea is the western entry point of the Indonesian throughflow, which brings water masses from the Pacific Ocean. This study aims to describe the relationship between water mass characteristics and Sound Velocity Profiler (SVP) in the Sulawesi Sea based on Marine Copernicus data from 2022 with a depth of up to 500 meters. Temperature and Salinity data were used to obtain water mass types from the Tpot-S diagram based on Emmery's classification and Sound Velocity Profiler (SVP) based on the Medwin empirical equation. The temperature, salinity, and SVP data were visualized using ODV 5.6.2 software. The data processing results have identified several water mass characteristics that are believed to be influenced by the Eastern North Pacific Central Water (ENPCW) water mass type found at depths ranging from 130 to 318 meters, Western North Pacific Central Water (WNPCW) water mass found at depths ranging from 130 to 500 meters, Eastern South Pacific Central Water (ESPCW) water mass found at depths ranging from 92 to 453 meters, and Western South Pacific Central Water (WSPCW) water mass found at depths ranging from 130 to 500 meters. The ENPCW water mass type on average has a smaller difference in SVP values compared to the WNPCW water mass type. Meanwhile, the ESPCW water mass type on average has a greater difference in SVP values compared to the WSPCW water mass type. The results indicate a positive relationship between temperature and SVP, meaning that the higher the temperature, the higher the SVP. However, there is a negative relationship between salinity and SVP, meaning that the higher the salinity, the lower the SVP.Keywords:Water MassTemperatureSalinitySound VelocitySulawesi Sea
Morphological identification of the soft coral, Clavularia inflata, reveals different sclerite characters across Indonesian coral reefs Beginer Subhan; Dietriech G Bengen; Sebastian Ferse; Fauzan Dzulfannazhir; Nurlita Putri Anggraini; Prakas Santoso; Dondy Arafat; Lalu M. Iqbal Sani; Prehadi Prehadi; Hawis Madduppa
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.2.22102

Abstract

Soft corals of the genus Clavularia (Blainville 1830) have complex and difficult to distinguish morphological characteristics, making them rather difficult to identify. A paucity of information exists for Indonesian coral reefs, a complex biogeographic region at the confluence of the Pacific and Indian Ocean that covers an extensive geographic area and several marine ecoregions, is subject to several ocean current systems, and includes a high diversity of habitats. Specimens of Clavularia inflata were collected from eleven study sites across the Indonesian archipelago, morphologically described based on their sclerite characteristics, and compared among sites. Sclerite observations were divided into four parts for each colony, namely pinnules, crowns, calyces, and stolons. The sclerites found in C. inflata comprised various forms such as rods, fingers, sticks, and brackets. Morphometric measurements of C. inflata showed specimens from Kepulauan Seribu had the largest pinnule, calyx, and stolon sclerites compared to other locations. The maximum mean size of crown sclerites was observed for specimens from Maluku Tenggara Barat. Similarities in the shape of sclerites resulted in specimens from Kangean, Morotai, Tanjung Lesung, Bontang, Lombok and Natuna forming a cluster, while those from Maluku Tenggara Barat and Arborek were dissimilar to other sites. Smaller sclerite sizes in specimens from Arborek are likely related to strong currents at that site. In conclusion, there were variations in the size of sclerites across the eleven study sites, with several sites forming a cluster of similar sclerite dimensions. Further studies using molecular markers are suggested to further explore the possibility of cryptic species.
A short review of discovery and development of fish sperm cryopreservation Dian Afriani; Kartini Eriani; Zainal Abidin Muchlisin; Iwan Hasri
Depik Vol 10, No 1 (2021): April 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.1.18794

Abstract

Global biodiversity, especially fish, has experienced a decline, this occurs as a result of over-exploitation, the presence of introduced fish species and climate change. This condition makes researchers look for solutions to overcome these problems by using cryopreservation techniques. The main purpose of cryopreservation is to store, maintain, and ensure the survival of genetic material, so that using cryopreservation techniques can maintain the viability and function of gamete cells both immunologically, biologically and physiologically. The success of the cryopreservation technique has made this technique widely developed in various species of living organism including fish. This article summarizes and reviews the history of the development of cryopreservation of animal species with specific focus on fish.Keywords:CryopreservationHistoryDepikEndemic species
Analisis isi lambung ikan mingkih, Cestraceus plicatilis Usman Bulanin; Mas Eriza; Masrizal Masrizal
Depik Vol 7, No 3 (2018): December 2018
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.7.3.10901

Abstract

Abstract. An investigation of analysis of stomach contents of fish Mingkih, Cestraceus plicatilis. Fish were caught in the Pesisir Selatan District (100028’ 5’’; 100029’ 16’’; 100031’ 25’’). Fishing conducted from March to July 2015. Fish were caught with fishing traditional equipment (cast nets, and spearfishing).  Samples of fish caught divided into three groups according to a predetermined si wize class are ≤ than 12 cm, 13-25 cm and ≥ 26 cm. The Mingkih fish Cestraceus plicatilis, was including herbivorous fish, which they were ratio of the total length body with of the digestive tract with an average of 3,21cm; 3,02 cm and 2,84 cm. There are different types of food found in the stomach based on the size of the fish. The main food types consumed both in the size ≤ than 12 cm, 13-25 cm and ≥ 26 cm are phytoplankton / periphyton (Chrysophyceae, Chlorophyceae, Cyanophyceae), zooplankton and detritus (other organic materials).Keywords: stomach, type of food, Mingkih fish and herbivorous Abstrak.Telah dilakukan penelitian tentang analisis isi lambung ikan Mingkih, Cestraceus plicatilis. Ikan sampel diperoleh dari hasil tangkapan di Kabupaten Pesisir Selatan (100 0 28’ 5’’; 100 0 29’ 16’’; 100 0 31’ 25’’). Penangkaapan dilakukan dari bulan Maret sampai Juli 2015. Ikan di tangkap dengan alat tangkap tradisional (jala/jaring lempar dan panah). Ikan sampel yang tertangkap dibagi dalam 3 kelompok sesuai dengan ukuran yang telah ditetapkan yaitu ≤ 12 cm, 13 – 25 cm dan ≥ 26 cm. Ikan Cestraceus plicatilis, termasuk ikan omniivora dengan ratio panjang saluran pencernaan dengan panjang total yaitu rata-rata 3,21 cm; 3,02  cm dan 2,84 cm. Terdapat perbedaan jenis makanan yang ditemukan di dalam lambung berdasarkan kelompok ukuran ikan. Jenis makanan utama yang dikonsumsi baik dari ukuran ≤ 12 cm, 13 – 25 cm maupun ≥ 26 cm adalah Phytoplankton/periphyton (Chrysophyceae, Chlorophyceae, Cyanophyceae), zooplankton dan detritus (bahan organik lainnya).Kata kunci:lambung, jenis makanan, ikan Mingkih dan herbivora
Perubahan sebaran dan kerapatan hutan mangrove di Pesisir Pantai Bama, Taman Nasional Baluran menggunakan citra satelit SPOT 4 dan SPOT 6 Andhika Rahmatullah Laksmana Fudloly; Mochammad Arif Zainul Fuad; Anang Dwi Purwanto
Depik Vol 9, No 2 (2020): August 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.9.2.14494

Abstract

The condition of mangrove forests in the Baluran National Park area is always changing. Mapping changes of mangrove area and density is needed to find out areas that need attention for mangrove conservation. The study aimed to determine the distribution and the density of mangrove forests in coastal waters of Bama, Baluran National Park. The image data used were SPOT 4 acquisition in 2007 and SPOT 6 acquisition in 2017 as well as field data that have been collected on 23-25 January 2019. The method of separating mangrove and non-mangrove objects used supervised classification, whereas for estimating the density of mangrove using the Normalized Difference Vegetation Index (NDVI) algorithm. The results showed the distribution of mangrove forests in coastal waters of Bama, Baluran National Park from 2007-2017 decreased in area by 8.9 ha. In contrast, the condition of mangrove density increased significantly, where the changes in mangrove density were dominated in the high-density class. The results of the accuracy tests using the method confusion matrix obtained an overall accuracy of 88%, while the accuracy-test with the kappa method obtained an accuracy of 87.76%. The resulting accuracy value indicates a high level of accuracy (more than 85%) and according to the specified requirements.Keywords: Mangrove, NDVI, SPOT 4, SPOT 6, Baluran National Park ABSTRAKKondisi luasan hutan mangrove di kawasan Taman Nasional Baluran terus mengalami perubahan. Pemetaan perubahan luasan dan kerapatan mangrove sangat diperlukan untuk mengetahui area yang membutuhkan perhatian untuk pelestarian mangrove. Penelitian ini bertujuan untuk mengetahui sebaran dan kerapatan hutan mangrove di  pesisir pantai Bama, Taman Nasional Baluran. Data yang digunakan dalam penelitian adalah citra SPOT 4 akuisisi tahun 2007 dan citra SPOT 6 akuisisi tahun 2017 dan data hasil survei lapangan yang telah dilakukan pada tanggal 23 - 25 Januari 2019. Metode pemisahan obyek mangrove dan non mangrove menggunakan klasifikasi terbimbing (supervised), sedangkan untuk pendugaan tingkat kerapatan mangrove menggunakan algoritma Normalized Difference Vegetation Index (NDVI). Hasil penelitian menunjukkan sebaran hutan mangrove di pesisir pantai Bama, Taman Nasional Baluran dari tahun 2007-2017 mengalami penurunan luasan sebesar 8,9 ha, sedangkan kondisi tingkat kerapatan mangrove mengalami peningkatan yang cukup signifikan dimana perubahan kerapatan mangrove didominasi pada kelas kerapatan rapat. Hasil uji akurasi menggunakan metode matriks kesalahan (confusion matrix) memperoleh overall accuracy sebesar 88%, sedangkan uji akurasi dengan metode kappa diperoleh tingkat akurasi sebesar 87,76%. Nilai akurasi yang dihasilkan menunjukkan tingkat ketelitian yang cukup tinggi (lebih dari 85%) dan telah memenuhi syarat yang ditetapkan.Kata kunci: Mangrove, NDVI, SPOT 4, SPOT 6, Taman Nasional Baluran
Analisis kesesuaian dan daya dukung lingkungan untuk pengembangan wisata bahari di Pulau Bawean Kabupaten Gresik Provinsi Jaya Timur Sukandar Sukandar; Citra S. U. Dewi; Muliawati Handayani
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.6.3.7024

Abstract

Bawean Island has potency as a ecotourism destination in Gresik District, Province of Jaya timur. This island is one of the popular destination for local tourist, and the visitors are increasing over the years; but there was no study on the suitability and carrying capacity of the island for marine ecotourism activities. The purpose of this study was to analysis the suitability and carrying capacity of Bawean Island for marine tourism. The Results of the analysis showed that the area of marine ocotourism in Bawean is Suitable (S1) for marine ecotourism development with a value for leisure travel 88.33%, snorkeling activity was 84.21%; and diving 81.48%. The total value carrying capacity of region was 398 persons/day.Pulau Bawean memiliki potensi sebagai daerah tujuan wisata bahari di kabupaten Gresikproins Jaya timur. Pulau ini telah menjadi tujuan wisata lokal bagi masyarakat Jaya timur dan jumlah kunjungan wisatawan semakin meningkat dari tahun ke tahun. Namu belum ada kajian mengenai kesesuaian dan daya dukung lingkungan di Pulau Bawean sebagai kawsan wisata bahari. Oleh karena itu penelitian ini bertujuan untuk mengkaji kesesuaian dan daya dukung Pulau Bawean sebagai kawasan wisata bahari. Hasil analisis menunjukkan bahwa Pulau Bawean sesuai (S1) untuk dikembangkan sebagai kawasan wisata bahari  dengan nilai untuk wisata rekreasi pantai sebesar 88,33%, wisata snorkeling sebesar 84,21% dan wisata selam sebesar 81,48%. Nilai total daya dukung kawasan sebesar 398 orang/hari.
Identification coral reef diatom using scanning electron microscope at Nature Reserve Pulau Sempu (NRPS), East Java El Rahimi, Sayyid Afdhal; Kryk, Adryan; Arsad, Sulastri; Luthfi, Oktiyas Muzaky; Isdianto, Andik; Luthfi, M. Azurea Bahri
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.13.1.29516

Abstract

Diatom, Bacillariophyceae, has an important role in environmental support because these algae contribute to 25% of the oxygen supply globally and each year represent 40% of primary production by fixed carbon using photosynthesis. Diatom samples were obtained from 3 different sites in around NRPS. Cleaning diatoms analyzed using SEM for describe ultrastructure in diatom valves. Three dominant diatoms Cocconeidaceae and Bacillariaceae from the south Java Sea (Indian Ocean). Basic information regarding the diversity of diatoms, and the success of photoautotrophic micro-algae that can be found both in marine and freshwater habitats, is very important to describe the role of each taxon from an ecology perspective in the future. Samples are taken from the substrate of 3 stations in Nature Reserve Pulau Sempu and prepared in the laboratory for scanning electron microscopy photographs. Clear and detailed features diatom frustule of SEM photograph reveal a schild diatom (Cocconeis) and panduriform diatom (Psammodictyon) are dominating taxa in NRSP areas.Keywords:Hard coralCocconeisPsammodictyonPulau SempuDiatom
Relationship of ENSO (El Niño – Southernoscillation ) and monsoon index on variability of rainfall and sea surface height in coastal City Semarang, Central Java Rosyidah Rosyidah; Kunarso Kunarso; Elis Indrayanti
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.11.3.26699

Abstract

The city of Semarang is one of the coastal areas in Indonesia that is prone to flooding. Flood events that often occur in the Semarang City area can be triggered by high rainfall. Variations in rainfall and sea level are closely related to global atmospheric circulation such as ENSO and regional atmospheric circulation, Monsoon. This study aims to examine the relationship between ENSO and Monsoon with the distribution of rainfall and sea level in coastal city Semarang from 2012 to 2021. Correlation and composite analysis were used to analyze the relationship and impact of ENSO and Monsoon phenomena on rainfall and sea level. The results showed the strong correlation of the ENSO index (Southern Oscillation Index) to rainfall in the JJA and SON periods. Generally, El Niño (La Niña) has an impact on increasing (decreasing) rainfall. Meanwhile, Australian Summer Monsoon Index (AUSMI) only strongly correlates with rainfall in the SON period. The westerly (eastern) wind indicated by a positive (negative) monsoon index in the SON period has the effect of increasing (reducing) rainfall. The ENSO phenomenon with sea level during the JJA period has a strong relationship. In JJA, the highest sea level (maximum tide) rises by 12.6 cm during El Niño and decreases by 0.6 cm during La Niña. Meanwhile, the lowest sea level (minimum low tide) decreased by 16.6 cm during El Niño and increased by 0.7 cm during La Niña. These results can explain the influence of global and regional atmospheric circulation on a local scale on the coast of Semarang City.Keywords:RainfallSea levelEl NiñoLa NiñaMonsoon
Ratio of coral reefs to macroalgae: An ecosystem approach management Aditiyawan Ahmad; Achmad Fahrudin; Mennofatria Boer; Yusli Wardiatno; Mohammad Mukhlis Kamal
Depik Vol 8, No 2 (2019): August 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.8.2.13422

Abstract

Abstract. The decline in the quality of coral reef ecosystems is not only caused by human activities but also caused by competition in ecosystems, including competition for space and nutrients. Research on the comparison of coral reefs with macroalgae is one of the determinants of coral reef health which is the basis for the management of coral reefs with an ecosystem approach. The purpose of this study was to analyze the comparison of coral reef cover with macroalgae. The research method used is Line Intercept Transect (LIT), the research location is 13 stations divided into 3 locations, namely north, centre, and south from Ternate Island in North Maluku. The results showed that the condition of coral reefs ranged from 24 – 86.60%, based on the condition categories of 13 observation locations, the coral reefs of Ternate Island were in very good condition at 15.38%, good conditions at 46.16%, adequate conditions at 30.77%, and damaged conditions 7.69%, while the condition of macroalgae cover ranged from 0 - 30.60% in the area of coral reef ecosystems. The ratio of the of coral reefs to algae ranges from 0 to 1.117, based on the ratio value, it is classified as low, medium to high, spread in the coral reef ecosystem of Ternate Island. Coral reef management strategies on Ternate Island include a continuous monitoring program for coral reef ecosystems, education on coral reef ecosystems, creating a conscious community of waste, and limiting the capture and restoking of herbivorous fish in coral reef areas.Keywords: Coral reef, ecosystem approach management, macroalgae, Ternate Island
Morfometrik lima species ikan yang dominan tertangkap di Danau Aneuk Laot, Kota Sabang Auliyanisa Khayra; Zainal A. Muchlisin; Muhammad A. Sarong
Depik Vol 5, No 2 (2016): August 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.2.4907

Abstract

Abstract. The objective of the present study was to analyze the morphometric variationsof five predominant fish species caught in Lake Aneuk Laot, Sabang City,Weh Island.The study was conducted in December 2015 to January 2016. The survey method was used in this study. The fish target were Nile tilapia (Oreochromis niloticus), tilapia (O. mossambicus), snakeskin gourami (Trichopodus pectoralis), giant gourami (Osphronemus goramy) and snakehead (Channa striata). The fish samples were catched using gillnets. The fish sample were analyzed for traditional and truss network morphometrics. The results showed that there is closed morphological relationship between Nile tilapia and tilapia, and between snakeskin gourami and giant gourami, while the snakehead fish was discriminated apart from the two previous groups.Keywords: Morphometric Nile tilapia, tilapia, snakeskin gourami, giant gourami, snakehead fish, Weh Island Abstrak. Penelitian ini bertujuan untuk menganalisis variasi morfologi ikan hasil tangkapan dominan di Danau Aneuk Laot Kota Sabang dengan menggunakan teknik traditional dan truss morphometric. Penelitian dilakukan pada Desember 2015 sampai Januari 2016. Ikan sampel terdiri dari ikan nila (Oreochromis niloticus), ikan mujair (O. mossambicus), ikan sepat siam (Trichopodus pectoralis), ikan gurami (Osphronemus gorami) dan ikan gabus (Channa striata). Ikan sampel diperoleh dengan menggunakan alat tangkap jaring. Sebanyak 12 karakter traditional morphometric and 14 karakter truss dianalisis dalam penelitian ini.  Hasil penelitian menunjukkan terdapat tiga kelompok ikan, kelompok pertama ikan nila dan ikan mujair, kedua ikan ini kemiripan yang tinggi; kelompok kedua adalah ikan sepat siam dan ikan gurami, kelompok ketiga adalah ikan gabus yang memiliki kemiripan yang jauh dengan kedua kelompok ikan sebelumnya.Kata kunci: Morfometrik, Nila, mujair, sepat siam, gurami, gabus, Pulau Weh

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