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Ichsan Setiawan
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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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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 944 Documents
Struktur vertikal upwelling – downwelling di Samudera Hindia Selatan Jawa hingga Selatan Bali berdasarkan salinitas musiman periode 2004 – 2010 Restu Wardani; Widodo S Pranowo; Elis Indrayanti
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.2.3.994

Abstract

Abstract. Salinity plays an important role for phenomenon identification of upwelling and downwelling. Upwelling that occurs in the Indian Ocean south of Java to South of Bali is influenced by monsoons, ENSO (El Nino Southern Oscillation) and IOD (Indian Dipole Oscillation Mode). Upwelling and downwelling patterns based on vertical structure of salinity and its seasonal variability within seven years (2004 to 2010) is studied here. Argo Float dataset is used in this study, processed by Ferret software for a vertical schematic model, and Pearson correlated with IOD and SOI indexes. The aim of this study is to  obtain the pattern of upwelling and downwelling based on profile of seasonal salinity during the period 2004-2010 in Indian Ocean south of Java – Bali and correlated with ENSO and IOD.  Further discussion on upwellling is provided since it is more important to the fisheries activity. Result shows an intensive upwelling phenomenon occurs at 110°E correlated with fishing ground area. ENSO and IOD phenomena has been founded also affect upwelling. Upwelling increasing in intensity during the La Nina - IOD (+). The upwelling is negative linear correlated with SOI(-0,89643), but its positive linear correlated with IOD (+0,798168).Keywords : vVrtical structure salinity; Seasonal upwelling; Indian Ocean; South Java-Bali Seas. Abstrak. Salinitas berperan penting untuk mengidentifikasi fenomena upwelling dan downwelling. Upwelling yang terjadi di samudera Hindia Selatan Jawa hingga Selatan Bali dipengaruhi oleh angin musim, ENSO (El Nino Southern Oscillation) dan IOD (Indian Oscillation Dipole Mode). Dalam peneletian ini dikaji pola upwelling dan downwelling berdasarkan distribusi salinitas secara vertikal dan vaeriabilitas musiman dikaji dalam waktu tujuh tahun (2004 – 2010). Data hasil akuisisi argo float digunakan dalam penelitian ini, diolah menggunakan software Ferret selanjutnya dilakukan  pembuatan model skematik  dan analisa korelasi pearson terhadap Indeks IOD dan SOI. Tujuan dari penelitian ini untuk memperoleh pola upwelling dan downwelling terhadap musim berdasarkan profil salinitas selama periode 2004 – 2010 di Samudera Hindia Selatan Jawa hingga Bali dan hubungannya dengan fenomena ENSO dan IOD.Penelitian lebih lanjut tentang upwelling penting untuk industri perikanan. Hasil penelitian menunjukkan Fenomena upwelling secara intensif terjadi pada koordinat bujur 110°BT, menunujukkan adanya kesesuaian dengan lokasi daerah penangkapan ikan. Fenomena ENSO dan IOD juga mempengaruhi upwelling, intensitasnya meningkat saat periode La Nina-IOD (+). Upwelling berkorelasi negatif terhadap SOI (-0,89643), sedangkan  upwelling berkorelasi posetif dengan IOD (+0,798168).Kata Kunci: Struktur vertikal salinitas; Upwelling musiman; Samudera Hindia; Laut Selatan Jawa-Bali
Struktur komunitas makrozoobenthos di aliran sungai di Senggarang, Pulau Bintan, Kepulauan Riau Tri Apriadi; Wahyu Muzammil; Winny Retna Melani; Aknes Safitri
Depik Vol 9, No 1 (2020): April 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.9.1.14641

Abstract

Abstract. The objective of this study was to determine the community structure of macrozoobenthic orgamism in Senggarang creek, Bintan island, Riau Islands. Samples were taken from four stations by purpossive method. Macrozoobenthic were collected by surber net, there were three replications in each station.  The result showed that  there were found six phylums and 17 genera  of macrozoobenthic. Macrobrachium sp. was the higest density. The higest density was found in third station (middle of river, no antropogenic influenced) about 140 ind m-2. The diversity and similarity indices were medium, with low dominance indice. Based on macrozoobenthic organism, the environmetal condition of Senggarang creek was stabile.Keywords: Bintan, creek, Macrobrachium sp., macrozoobenthic, Senggarang Abstrak. Penelitian ini bertujuan untuk mengkaji struktur komunitas makrozoobenthos di aliran sungai di Senggarang, Kota Tanjungpinang. Pengambilan sampel dilakukan pada empat stasiun yang ditentukan secara purposive. Sampel diambil menggunakan surber net, sebanyak tiga kali ulangan pada masing-masing stasiun. Makrozoobenthos yang ditemukan di perairan aliran sungai Senggarang ditemukan  6 filum dan 17 spesies. Jenis makrozoobenthos yang paling tinggi kepadatannya dari semua setiap stasiun adalah Macrobrachium sp. Kepadatan makrozoobentos tertinggi yaitu pada stasiun 3 (bagian tengah sungai, tidak ada aktivitas manusia) dengan nilai kepadatan sebesar 140 ind/m2. Indeks keanekaragaman tergolong sedang, indeks keseragaman sedang, indeks dominansi rendah. Berdasarkan keberadaan makrozoobenthos, lingkungan perairan sungai di Senggarang relatif stabil.Kata kunci: Bintan, Macrobrachium sp., makrozoobenthos, Senggarang, sungai
Kondisi habitat dan keragaman nekton di hulu Daerah Aliran Sungai Wampu, Kabupaten Langkat, Provinsi Sumatera Utara Ahmad Muhtadi; Orbita R. Dhuha; Desrita Desrita; Toibullah Siregar; Muammar Muammar
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.6.2.5982

Abstract

The study was conducted to determine the condition of the habitat and the diversity of fish in the watershed of Wampu. The habitat conditions was determined by measuring parameters of temperature, brightness, current velocity, depth, DO, pH, type of substrate, the width and the width of the river. Nekton was sampled using electrofishing units at voltage of 15 volt and 9 amperes. The characteristic of upstream watershed was large stones substrate, gravel, and sand with a fast flow and clear waters. Physical-chemical parameters of waters in the upper watersheds Wampu is still suitable for fish, crabs, and shrimp to live in good condition. A total of 15 species of fishes and one species of freshwater crab and one species of freshwater prawns were recorded during the study. There were two species of mahseer were recorded, namely; Tor soro and T. tambra. The higher diversity index (H ') was recorded in the Bahorok River with a value of 4.5 followed by Berkail River (3.45) and Landak River with a value of 2.46.Penelitian ini dilakukan untuk mengetahui kondisi habitat dan keragaman ikan di DAS Wampu. Pengukuran kondisi habitat dengan mengukur parameter suhu, kecerahan, kecepatan arus, kedalaman, DO, pH, jenis substrat, lebar dan lebar badan sungai. Jenis nekton ditangkap dengan alat backpack electrofishing units dimana arus listrik yang dihasilkan bersumber dari batere 15 volt dan 9 ampere. Kondisi habitat pada bagian hulu DAS  Wampu yaitu bertipe substrat batu besar, kerikil, dan pasir dengan arus yang sedang - besar serta perairan yang jernih. Parameter fisika-kimia perairan di hulu DAS Wampu masih layak dan cocok untuk habitat ikan, kepiting dan udang. Selama penelitian nekton yang terkoleksi sebanyak 15 jenis ikan dan 1 jenis kepiting air tawar serta 1 jenis udang air tawar. Pada survei ini ditemukan dua jenis ikan Tor  yakni  T. soro, dan T. Tambra. Keanekaragaman (H') tertinggi terdapat pada Sungai Bahorok dengan nilai 4,5 diikuti Sungai Berkail dengan nilai 3,45, dan Sungai Landak dengan nilai 2,46. 
Estimation of mangrove carbon using drone images Firman Farid Muhsoni; Indah Wahyuni Abida; Dyah Ayu Sulistyo Rini; Aditya Januar Putera
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.10.1.19313

Abstract

Mangrove has numerous ecological functions, such as a habitat for various biota, a place of care and rearing, with a microclimate regulator and spawning. This ecosystem can store the highest carbon compared to tropical, subtropical, and boreal forests. This research aimed to model the estimation of mangrove carbon stocks using drone images. The method used consists of several steps as follows: (1) Taking and analyzing drone images, (2) Identification and estimation of biomass with carbon stocks, (3) Modeling of mangrove carbon stock using drone and field data. The results of mangrove carbon estimation using logarithmic regression of drone images were the best, by the equation y = 0.0455ln (x) + 0.244. Therefore, the results showed that the R2 value was 0.7454, with the RMSE accuracy-test being 689.9 kg, at 35.4%.Keywords:DronesMangroveCarbon stock
Kondisi arus pasang surut di perairan pesisir kota Makassar , Sulawesi Selatan Taslim Arifin; Yulius Y; Muhammad Furqon Azis Ismail
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.1.3.113

Abstract

Abstract. Numerical hydrodynamics model MOHID based on General Ocean Turbulence Model formula was used to study the tidal current in Makassar waters. The data used in this model are tidal elevation and bathymetry data from GEBCO. The tidal current simulation was conducted for 30 days. Model simulation results show that the tidal current velocity ranged between 0,001 m/s – 0,012 m/s. The current velocity during neap tide is smaller than the velocity during spring tide. The pattern of tidal current in Makassar waters is dominantly flows towards westward and then turned heading northward direction. The simulation result of tide-induced residual current in verification point shows that the flows is ebb-dominant at a rate of 0,005 m/s heading westward direction.
Pemanfaatan daun Indigofera zollingeriana sebagai bahan pakan ikan patin (Pangasius sp.) Retno Cahya Mukti; Danang Yonarta; Aldila Din Pangawikan
Depik Vol 8, No 1 (2019): April 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.8.1.13056

Abstract

Abstract. The feed is one of the components that support the growth and survival in fish culture. One of the alternative feed ingredients which could use as other feed ingredient was Indigofera zollingeriana leaves. The aims of this research was to determine the use of Indigofera zollingeriana leaves on the growth performance of Patin (Pangasius sp.). This research consisted of five treatments and three replications. Indigofera zollingeriana leaves were used in the diet amount of P0 (0%) (without Indigofera zollingeriana leaves addition ), P1 (10% Indigofera zollingeriana leaves addition), P2 (20% Indigofera zollingeriana leaves addition), P3 (30% Indigofera zollingeriana leaves addition), and P4 (40% Indigofera zollingeriana leaves addition). The result showed that the use of Indigofera zollingeriana leaves had a significant effect on the fish growth performance. The use of 20% zollingeriana Indigofera produced the best results of the absolute weight of 2.15 g, 1.00% daily growth rate and feed efficiency of 44.60%.Keywords: Patin, feed ingredient, Indigofera zollingeriana leaveAbstrak. Pakan merupakan komponen yang menunjang pertumbuhan dan kelangsungan hidup dalam budidaya ikan. Salah satu bahan baku alternatif yang dapat digunakan sebagai bahan pakan ikan yaitu daun Indigofera zollingeriana. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan daun Indigofera zollingeriana terhadap kinerja pertumbuhan pada ikan patin. Penelitian ini terdiri dari lima perlakuan dan tiga ulangan. Perlakuan penggunaan daun Indigofera zollingeriana terdiri dari P0(0%) (tanpa penambahan daun Indigofera zollingeriana), P1 (penambahan daun Indigofera zollingeriana 10%), P2 (penambahan daun Indigofera zollingeriana 20%), P3 (penambahan daun Indigofera zollingeriana 30%), dan P4 (penambahan daun Indigofera zollingeriana 40%). Hasil penelitian menunjukkan bahwa penambahan daun Indigofera zollingeriana menunjukkan kinerja pertumbuhan pada ikan patin. Penambahan Indigofera zollingeriana sebanyak 20% menghasilkan hasil terbaik yaitu pertumbuhan bobot mutlak sebesar 2,15 g, laju pertumbuhan harian 1,00% serta efisiensi pakan sebesar 44,60%.Kata Kunci: Bahan pakan, daun Indigofera zollingeriana, ikan patin
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
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
Kajian manfaat kawasan konservasi perairan bagi pengembangan ekowisata bahari: Studi kasus di kawasan konservasi perairan Nusa Penida, Bali Bato, Marjan; Yulianda, Fredinan; Fahruddin, Achmad
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 2, No 2 (2013): August 2013
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.2.2.777

Abstract

Abstract. Nusa Penida is one of the marine protected area in Bali Province. The location has a potency higher as tourist destination. Hence, the objective of the present study was to evaluate the potency and benafit of the this marine protected area as a marine ecotourism. The study was conducted in September 2012 to February 2013. The descriptive quantitative method was used in the study, the data collection was covered the percent cover of corals communities, corals mortality index, marine ecotourism sustainable index, carrying capacity of marine ecotourism. The results of this research showed that the percent cover of corals communities at Nusa Penida was categorized from good to very good ranged between 52.00% to 97.00% with corals mortality index ranged between 0.00 to 0.01 at a depth of 3 meters and between 0.00 to 0.025 at 10 meters depth. The marine protected area of Nusa Penida is suitable for diving activity snorkeling,and beach ecotourism with carrying capacity for diving was 153 people/day, snorkling 212 people/day, and beach ecotourism 122 people/day. The marine protected area of Nusa Penida gave impact on increasing of human well being of society in Nusa Penida with increasing the revenue 10%-30%. and also gave profits the Klungkung Regency. Keywords: Benefit; Marine ecotourism; Nusa Penida; Protected AreaAbstrak. Nusa Penida adalah salah satu kawasan area konservasi laut di Bali yang berpotensi tinggi menjadi salah satu tujuan wisatawan. Oleh karena itu penelitian ini bertujuan untuk melihat sejauh mana manfaat kawasan ini sebagai kawasan wisata bahari. Penelitian dilaksanakan pada bulan September 2012 sampai Februari 2013. Metode yang digunakan adalah deskriptif kuantitatif dengan menggunakan analisis perhitungan persen tutupan komunitas karang, indeks mortalitas, indeks kesesuaian ekowisata bahari, daya dukung kawasan ekowisata bahari, evaluasi tingkat kesejahteraan masyarakat. Hasil penelitian menunjukkan bahwa persen tutupan karang di Nusa Penida dikategorikan dari baik sampai sangat baik yaitu berkisar antara 52,00%-97,00% dengan indeks mortalitas berkisar antara 0,00 0,01 pada kedalaman 3 meter dan 0,00-0,025 pada kedalaman 10 meter. Oleh karena itu kawasan konservasi Nusa Penida sesuai untuk aktivitas wisata selam, snorkling, dan wisata pantai dengan daya dukung kawasan untuk selam 153 orang/hari, snorkling 212 orang/hari dan ekowisata pantai sebanyak 122 orang/hari. Dari penelitian ini dapat disimpulkan bahwa kawasan konservasi Nusa Penida memberi dampak terhadap peningkatan kesejahteraan masyarakat sebagai pekerja wisata dengan bertambahnya pendapatan sebesar 10%-30% dan juga menambah pemasukan daerah Kabupaten Klungkung.Kata Kunci: Ekowisatata Bahari; Kawasan Konservasi; Manfaat; Nusa Penida

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