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INDONESIA
Jurnal Kelautan : Indonesian Journal of Marine Science and Technology
Published by Universitas Trunojoyo Madura
ISSN : 19079931     EISSN : 24769991     DOI : -
Core Subject :
This journal encompasses original research articles, review articles, and short communications, including: Marine and fisheries ecology and biology, Marine fisheries, Marine technology, biotechnology, Mariculture, Marine processes and dynamics, Marine conservation, Marine pollution, Marine and coastal resource management, Marine and fisheries processing technology, Salt technology, Marine geology, physical and chemical oceanography.
Arjuna Subject : -
Articles 394 Documents
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DISTRIBUSI SPASIAL DAN TEMPORAL FITOPLANKTON DI PERAIRAN LAUT TROPIS Samria Abubakar; Nebuchadnezzar Akbar; Abdurrachman Baksir; Halikuddin Umasangadji; N Najamuddin; Irmalita Tahir; Rustam E Paembonan; Firdaut Ismail
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.10285

Abstract

ABSTRACTPhytoplankton are aquatic organisms that are free to float following the movement of the current. The distribution of phytoplankton is widespread throughout the body of water, both in rivers, estuaries, lakes, reservoirs, beaches and oceans. Water quality conditions will affect the presence of phytoplankton in certain waters. The purpose of this review article is to examine the types of phytoplankton that are spatially and temporally distributed and the physicochemical factors that affect the spatial and temporal distribution of phytoplankton in tropical waters. Assessing the spatial and temporal distribution of phytoplankton in tropical waters sourced from the latest national and international scientific journals and as a reference source of information for further research. The study in this paper is a literature review or literature study originating from the latest national and international scientific journals, with a focus on studying several research results that are relevant to the research topic, the study material is adjusted to the research data. The study area (tropical and subtropical) includes Indonesia, Malaysia, China, Brazil and India. The Bacillariophyceae class is found in all waters both spatially and temporally. The distribution of phytoplankton is spatially influenced by the presence of nutrients, then temporally the highest is found in the dry season. The distribution of phytoplankton is influenced by physical and chemical parameters of the waters (dissolved oxygen, temperature, salinity, pH, suspended solids/SPM, nitrate and phosphate) especially the presence of nutrients. Keywords: Phytoplankton, Distribution, Spatial and Temporal, Tropical WatersABSTRAKFitoplankton merupakan organisme akuatik yang bebas melayang mengikuti pergerakkan arah arus. Distribusi fitoplankton tersebar luas di seluruh badan perairan baik di sungai, muara, danau, waduk, pantai maupun samudera. Kondisi kualitas perairan akan mempengaruhi keberadaan fitoplankton di perairan tertentu. Tujuan review artikel ini mengkaji jenis fitoplankton yang terdistriusi secara spasial dan temporal serta faktor-faktor fisika kimia yang mempengaruhi distribusi spasial dan temporal fitoplankton di perairan tropis. Mengkaji distribusi spasial dan temporal fitoplankton di perairan tropis yang bersumber dari berbagai jurnal terbaru ilmiah nasional dan internasional serta sebagai sumber rujukan informasi untuk penelitian selanjutnya. Kajian pada tulisan ini merupakan telaah literatur atau studi pustaka yang berasal dari berbagai jurnal ilmiah terbaru nasional dan internasional, dengan fokus kajian beberapa hasil penelitian yang relevan dengan topik penelitian, materi kajian disesuaikan dengan data penelitian. Wilayah lokasi penelitian (tropis dan subtropis) meliputi Indonesia, Malaysia, Cina, Brazil dan India.Kelas Bacillariophyceae ditemukan di seluruh perairan baik secara spasial dan temporal. Distribusi fitoplankton secara spasial di pengaruhi keberadaan nutrien, kemudian secara temporal tertinggi ditemukan pada musim kemarau. Distribusi fitoplankton dipengaruhi parameter fisika dan kimia perairan (Oksigen terlarut, suhu, salinitas, ph, padatan tersuspensi/SPM, nitrat dan fosfat) tertutama keberadaan unsur hara.Kata kunci: Fitoplankton, Disitribusi, Spasial dan Temporal, Perairan Tropis
TINGKAT PEMANFAATAN IKAN KEMBUNG (Rastrelliger kanagurta) DI PERAIRAN MAPUR YANG DIDARATKAN DI DESA KELONG, KABUPATEN BINTAN Riska Aprilia; Susiana Susiana; Wahyu Muzammil
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.9723

Abstract

ABSTRACTMapur waters is one of the fishing area by fishermen in Kelong Village and the mackerel has targeted fish caused high economical value that can increase fishermen's income. This study was held in September 2018 to April 2020 in Kelong Village landing based. The research aims to determine the catch per unit effort (CPUE), maximum sustainable yield (MSY), utilization rate, and total allowable catch (TAC) of mackerel fish captured in the Mapur Waters that landing in Kelong Village. The Fishermen in Kelong Village used fishing gear to catch mackerel fish using hand lines. The research method was used a survey method, the primary data are captured data and effort by fisherman, while secondary data were obtained from fishermen interviews and related literature. Analysis of data on this study was used the Schaefer method. The results showed that the average value of catch per unit effort (CPUE) are 9,40 kg/trip. Maximum sustainable yield (MSY) mackerel fish are 8246,3 kg/unit with optimal capture effort (fopt) 1739 trips. The utilization rate of 3,715% of MSY value was low. The total allowable catch (TAC) is 6597,03 kg/unit. Overall the capture effort mackerel fish still could be increased to get more optimal results, but does not exceed the pre-defined MSY limit.Keywords: Mackerel fish, MSY, Mapur waters, utilization rateABSTRAKPerairan Mapur merupakan salah satu daerah penangkapan ikan kembung oleh nelayan di Desa Kelong. Ikan kembung memiliki nilai ekonomis tinggi yang dapat menambah pendapatan nelayan. Penelitian ini dilaksanakan pada bulan September 2018 sampai April 2020 di tempat pendaratan Desa Kelong. Penelitian ini bertujuan untuk mengetahui catch per unit effort (CPUE), potensi lestari maksimum (MSY), tingkat pemanfaatan, serta jumlah tangkapan yang diperbolehkan (JTB) dalam penangkapan ikan kembung di Perairan Mapur yang didaratkan di Desa Kelong. Alat tangkap yang digunakan nelayan Desa Kelong untuk menangkap ikan kembung yaitu pancing ulur. Metode penelitian yang digunakan adalah metode survei. Data primer yang diambil berupa hasil tangkapan dan upaya penangkapan, sedangkan data sekunder didapat dari wawancara nelayan dan literatur yang terkait. Analisis data pada penelitian ini menggunakan metode Schaefer. Hasil penelitian menunjukkan bahwa nilai rata-rata catch per unit effort sebesar 9,40 kg/trip. Potensi lestari maksimum ikan kembung sebesar 8246,3 kg/unit dengan upaya penangkapan optimal (fopt) 1739 trip. Tingkat pemanfaatan sebesar sebesar 3,715 % dari nilai MSY dikategorikan rendah, sedangkan nilai jumlah tangkapan yang diperbolehkan sebesar 6597,03 kg/unit. Secara keseluruhan penangkapan ikan kembung masih bisa ditingkatkan untuk mendapatkan hasil yang lebih optimal, tetapi tidak melebihi batas MSY yang sudah ditentukan.Kata Kunci: ikan kembung, MSY, Perairan Mapur, tingkat pemanfaatan
PENGARUH PEMBERIAN PAKAN KOMERSIAL DENGAN CAMPURAN RECOMBINANT GROWTH HORMONE (rGH) PADA BUDIDAYA Anov Ersantyo Pratama; Salnida Yuniarti Yuniarti Lumbessy; Fariq Azhar
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.9719

Abstract

ABSTRACTThis reasearch aims to analyze the effect of the addition and to obtain the concentration of rGH hormone which can have the best effect on seabass (L.calcarifer). This research was conducted for 28 days using seabass with 7-8 cm size, with a container that have 20 L volume and the density of 10 fish. The method used in this research was an experimental method using completely randomized design with 4 treatment and 3 replication, P1: control, P2:  rGH hormone 0.5 mg/ml, P3: rGH hormone 0.6 mg/ml, P4: rGH hormone 0.7 mg/ml. The parameters observed were absolute weight and lenght growth, specific growth rate, feed conversion ratio (FCR), feed utilization efficiency (EPP), and survival rate (SR). Data were analyzed with ANOVA and Duncan’s test. The result showed that differences in the concentration of the addition of rGH hormone in commercial feed could effect all the research parameters except feed conversion ratio and survival rate. Addition of the rGH hormone with a concentration of 0.6 mg/ml (P3) is the best concentration because it provides an absolute weight growth rate of 4.03 g, an absolute length growth rate of 1.90 cm, a specific growth rate of 1.32% and feed utilization efficiency of 29.56%.Keywords: commercial feed recombinant growth hormone (rGH), seabass (Lates calcarifer.ABSTRAKPenelitian ini bertujuan untuk menganalisa pengaruh penambahan hormon rGH serta mendapatkan konsentrasi hormon rGH yang dapat memberikan pengaruh terbaik pada benih ikan kakap putih (L. calcarifer). Penelitian dilakukan selama 28 hari menggunakan benih ikan kakap putih berukuran 7-8 cm, dengan ukuran wadah 20 L dan padat tebar 10 ikan. Metode yang digunakan adalah metode eksperimen menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 ulangan yaitu, P1: tanpa hormon rGH (kontrol), P2: konsentrasi hormon rGH 0,5 mg/ml, P3: konsentrasi hormon rGH 0,6 mg/ml, P4: konsentrasi hormon 0,7  mg/ml. Parameter penelitian yang diamati adalah pertumbuhan berat mutlak, pertumbuhan panjang mutlak, laju pertumbuhan spesifik, rasio konversi pakan (FCR), efisiensi pemanfaatan pakan (EPP) dan survival rate (SR). Data yang diperoleh dianalisa sidik ragam (ANOVA) dan uji lanjut Duncan. Hasil penelitian menunjukkan bahwa perbedaan konsentrasi penambahan hormon rGH pada pakan komersil dapat mempengaruhi semua parameter penelitian kecuali rasio konversi pakan (FCR), dan survival rate (SR). Pemberian hormon rGH dengan konsentrasi 0,6 mg/ml (P3) merupakan konsentrasi terbaik karena memberikan pertumbuhan berat mutlak sebesar 4,03 g, pertumbuhan panjang mutlak sebesar 1,90 cm, laju pertumbuhan spesifik sebesar 1,32 %, dan efisiensi pemanfaatan pakan sebesar 29,56%.Kata kunci: pakan komersial, recombinant growth hormon (rGH), kakap putih (Lates calcarifer).
ASPEK EKOLOGI DAN PERTUMBUHAN KERANG BULU (Anadara antiquata) DI PERAIRAN LETMAN, KABUPATEN MALUKU TENGGARA Rosita Silaban; Dortje Thedora Silubun; Ahmad Ade Rifandi Jamlean
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.10325

Abstract

ABSTRACTFeather shells are an important commodity that has the potential to be developed. Feather shells are a fishery resource that has been exploited for thousands of years for consumption. The objectives of this study were 1) to examine individual density, 2) relative density, 3) distribution pattern, 4) relationship of length and weight and 5) condition factors of feather shells. Sampling was carried out using the belt transect method. The sample of feather shells was then measured for the length, width and height of the body and weighed. Based on the transect, the individual density of feather clams (Anadara antiquata) was found on transect 4, which was 0.338 ind / m2, while the lowest density was found on transect 2, which was 0.05 ind / m2. The highest relative density of feather shells was on transect 4 at 19% and the lowest was on transects 1 and 2 at 1%. The distribution of feather shells was obtained that the feather shells had a clustered distribution pattern with an Id value of 1.30 (Id 1). The correlation between length and weight of feather shells was found to have a b value of 2.60 so that the growth pattern was classified as positive allometric (b 2.50). The condition factor obtained an average value of 1.25 indicating that the environmental conditions were good enough for the organism (Kn 1).Keywords: feather shells, ecological aspects, growth, LetmanABSTRAKKerang bulu merupakan salah satu komoditas penting yang sangat potensial dikembangkan. Kerang bulu menjadi salah satu sumber daya perikanan yang telah dieksploitasi sejak beribu-ribu tahun yang lalu untuk dikonsumsi. Tujuan dari penelitian ini yaitu 1) mengkaji kepadatan individu, 2) kepadatan relatif, 3) pola distribusi, 4) hubungan panjang dan berat serta 5) faktor kondisi kerang bulu. Pengambilan sampel dilakukan dengan menggunakan metode belt transek. Sampel kerang bulu kemudian dilakukan pengukuran panjang, lebar dan tinggi tubuh serta ditimbang beratnya. Kepadatan individu kerang bulu (Anadara antiquata) berdasarkan transek diperoleh kepadatan tertinggi terdapat pada transek 4  yaitu sebesar 0,338 ind/m2 sedangkan kepadatan terendah terdapat pada transek 2 yaitu sebesar 0,05 ind/m2. Kepadatan relatif tertinggi kerang bulu terdapat pada transek 4 sebesar 19% dan terendah pada transek 1 dan 2 sebesar 1%. Distribusi kerang bulu diperoleh kerang bulu memiliki pola penyebaran mengelompok dengan nilai Id sebesar 1,30 (Id1). Hubungan panjang dan berat kerang bulu didapati nilai b sebesar 2.60 sehingga pola pertumbuhan tergolong allometrik positif (b2.50). Faktor kondisi diperoleh nilai rata-rata sebesar 1.25 menunjukan kondisi lingkungan cukup baik bagi organisme (Kn1).Kata kunci:  kerang bulu, aspek ekologi, pertumbuhan, Letman
KOMPARASI POLA SPASIAL KONDISI TERUMBU KARANG TAMAN NASIONAL KARIMUNJAWA M Munasik; Andy Ahmad Romadhoni; Muhammad Helmi
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.11436

Abstract

ABSTRACTComparative studies on the percentage of coral reef substrate cover have been carried out in 3 (three) management zones (protection zone, utilization and Non-MPA) Karimunjawa National Park (KNP). The Manta Tow broadscale coral reef assessment method was applied to the north side of Bengkoang Island and the south side of Cemara Besar Island (protection zone), southern side of Bengkoang Island and northern side of Cemara Besar Island (utilization zone) and Non-MPA (Seruni Island) to observe live coral cover, dead coral, coral rubble and soft coral. Substrate cover variations from 10-12 towing (track length 200m) from each side of the island have formed a spatial pattern of coral reef conditions. Furthermore, the condition of the coral reefs was confirmed using the UPT (Underwater Photo Transect) detailed assessment method with one station on each side of the island. The results showed that there were differences in the spatial pattern of coral reef conditions as indicated by significant differences in the percentage of live coral cover, dead coral, rubble and coral lifeform among management zones of the KNP. The condition of coral reefs of the MPA is better and has a higher diversity of coral species than Non-MPA of the Karimunjawa National Park. The spatial pattern of coral reef conditions can be used as an indicator of disturbances in the coral reef ecosystem and can be used for periodic analysis of coral reef monitoring data in conservation areas.Keywords: spatial pattern, coral reef condition, manta tow, underwater photo transect, Karimunjawa National Park.ABSTRAKStudi perbandingan persentase tutupan substrat terumbu karang telah di lakukan pada 3 (tiga) zona pengelolaan (zona perlindungan, pemanfaatan dan luar kawasan) Taman Nasional Karimunjawa. Metode penilaian terumbu karang skala luas Manta Tow diaplikasikan di sisi utara P. Bengkoang dan sisi selatan P. Cemara Besar (zona perlindungan), sisi selatan P. Bengkoang dan sisi utara P. Cemara Besar (zona pemanfaatan) dan luar kawasan (P. Seruni) untuk mengamati tutupan karang hidup, karang mati, pecahan karang dan karang lunak. Variasi persentase tutupan substrat dari 10-12 tarikan Manta Tow (panjang lintasan 200m) dari masing-masing sisi pulau telah membentuk pola spasial kondisi terumbu karang. Selanjutnya penilaian kondisi terumbu karang dikonfirmasi dengan menggunakan metode penilaian rinci UPT (Underwater Photo Transect) dengan satu stasiun setiap sisi pulau. Hasil menunjukkan terdapat perbedaan pola spasial kondisi terumbu karang yang ditunjukkan oleh perbedaan yang signifikan persentase tutupan karang hidup, karang mati, pecahan karang dan lifeform karang antar zona pengelolaan.  Kondisi terumbu karang di dalam kawasan lebih baik dan memiliki keragaman jenis karang lebih tinggi daripada di luar kawasan Taman Nasional Karimunjawa. Pola spasial kondisi terumbu karang dapat dijadikan indikator terjadinya gangguan pada ekosistem terumbu karang di suatu kawasan dan dapat digunakan untuk analisis data pemantauan terumbu karang secara berkala di kawasan konservasi.Kata Kunci: pola pasial, kondisi terumbu karang, manta tow, underwater photo transect, Taman Nasional Karimunjawa,
STRUKTUR KOMUNITAS BULU BABI (Echinoidea) DI ZONA INTERTIDAL PERAIRAN MANOKWARI Jenly Haurissa; Lutfi Lutfi; Abdul Hamid A. Toha
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.10834

Abstract

ABSTRACTSea urchins (Echinoidea) are spread from shallow intertidal areas to the deep sea. This study aims to determine species diversity and abundance of sea urchins in the intertidal zone of Manokwari Waters. The study took place in three locations in the intertidal zone of Manokwari waters. The method used was purposive sampling with a line transect sampling technique measuring 1x1 meter in size. We found 10 species namely H. mammilatus, E. mathaei, E. oblonga, E. viridis, E. lucunter, D. setosum, E. calamaris, D. savignyi, Echinotrix sp., and E. diadema. Sea urchin (H ') index value ranges from H’= 0.2173–0.448430; Index (E) ranges between 0.3108–0.7477 and the Index Value (C) ranges between 0.3769-0.7911 in each of the intertidal zones. L1 (Di = 0.5 ind / 6m2 - 21.8 ind / 6m2); KR = (2.0270%–88.5135%); L2 (Di = 0.5 ind / 6m2–9.5 ind / 6m2; KR = 0.8474% -48.3050%) and L3 (Di = 0.8 ind / 6m2–7.1 ind / 6m2; KR = 7.6923% -66.1538%).Keywords: Abundance, Intertidal, Manokwari, Sea Urchin, Species Diversity,ABSTRAKBulu babi (Echinoidea) tersebar di daerah pasang surut yang dangkal hingga laut dalam. Penelitian ini bertujuan untuk mengetahui keanekaragaman jenis dan kelimpahan bulu babi di zona intertidal. Penelitian dilakukan pada tiga lokasi di Perairan Manokwari. Metode yang digunakan adalah purposive sampling dengan teknik line transect sampling berukuran 1 × 1 meter. Kami menemukan 10 spesies yaitu H. mammilatus, E. mathaei, E. oblonga, E. viridis, E. lucunter, D. setosum, E. calamaris, D. savignyi, Echinotrix sp., dan E. diadema. Nilai indeks bulu babi (H') berkisar dari H' = 0,2173–0,448430; Indeks (E) berkisar antara 0,3108–0,7477 dan Nilai Indeks (C) berkisar antara 0,3769–0,7911. Kelimpahan mutlak dan relatif pada setiap lokasi adalah: L1 (Di = 0,5 ind/6m2 - 21,8 ind/6m2); KR = (2,0270% - 88,5135%); L2 (Di = 0,5 ind/6m2–9,5 ind/6m2; KR = 0,8474% -48.3050%) dan L3 (Di = 0,8 ind/6m2–7,1 ind/6m2; KR = 7.6923% -66,1538%).Kata Kunci: Bulu Babi, Intertidal, Keanekaragaman Jenis, Kelimpahan, Manokwari
PERTUMBUHAN RUMPUT LAUT Sargassum sp. YANG DIBUDIDAYA PADA KEDALAMAN BERBEDA DI TELUK EKAS LOMBOK TIMUR Wila Lailatul Hulpa; Nunik Cokrowati; Nanda Diniarti
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.10934

Abstract

ABSTRACTSargassum sp. is a brown algae that has economic value from its alginate content. Alginate is used as a raw material for the food processing industry, pharmaceuticals, cosmetics and laboratory materials. Sargassum sp. currently not cultivated and are still taken freely in marine waters. The purpose of this study was to determine the growth of Sargassum sp. cultivated at different planting depths using the longline method. The research method used is an experimental method with different depth treatments, namely P1 (100 cm), P2 (70 cm), P3 (50 cm), and P4 (25 cm), each treatment was repeated 4 times. The experimental design used was a Completely Randomized Design (CRD) with data analysis using ANOVA with further BNT testing. The research variables measured were absolute growth, specific growth rate, number of leaves and number of fruit. The results showed that the P2 treatment gave the best results on absolute growth, which was 430 g, daily growth rate was 5.56%, number of leaves was on average 5890 pieces, and the highest number of fruit was on average 6510 pieces. The conclusion of this research is the cultivation of Sargassum sp. at different depths had a significant effect on growth. The best growth in this study was obtained at a depth of 75 cm.Keywords: Brown algae, cultivation, weight, leaves, fruit.ABSTRAKSargassum sp. merupakan alga coklat yang memiliki nilai ekonomis dari kandungan alginat yang dimilikinya. Alginat digunakan sebagai bahan baku industri pengolahan makanan, farmasi, kosmetik dan bahan laboratorium. Sargassum sp. saat ini belum dibudidayakan dan masih diambil bebas di perairan laut. Tujuan penelitian ini adalah untuk mengetahui pertumbuhan Sargassum sp. yang dibudidayakan pada kedalaman tanam yang berbeda dengan metode rawai. Metode penelitian yang digunakan adalah metode eksperimental dengan perlakuan perbedaan kedalaman yaitu P1(100 cm), P2 (70 cm), P3 (50 cm), dan P4 (25 cm), setiap perlakuan diulang 4 kali. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan analisa data menggunakan ANOVA dengan uji lanjut BNT. Variabel penelitian yang diukur adalah pertumbuhan mutlak, laju pertumbuhan spesifik,  jumlah daun dan jumlah buah. Hasil penelitian menunjukkan bahwa perlakuan P2 memberikan hasil terbaik pada pertumbuhan mutlak yaitu 430 g, laju pertumbuhan harian yaitu 5.56 %, jumlah daun yaitu rata-rata 5890 helai, dan jumlah buah tertinggi yaitu rata-rata 6510 buah. Kesimpulan penelitian ini adalah budidaya Sargassum sp. pada kedalaman yang berbeda memberikan pengaruh nyata terhadap pertumbuhan. Pertumbuhan terbaik pada penelitian ini  diperoleh pada kedalaman 75 cm. Kata Kunci: Alga coklat, budidaya,  berat, daun, buah.
UTILIZATION OF MULTITEMPORAL LANDSAT DATA FOR COASTLINE CHANGE ANALYSIS USING CANNY EDGE DETECTOR Luhur Moekti Prayogo; Zainul Hidayah
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.8924

Abstract

ABSTRACTThe development of remote sensing technology has experienced significant progress. This progress is marked by the availability of images of various resolutions with complete channels, open-source, and their development in various image classification techniques such as edge detection techniques. This study aims to examine changes in the coastline in Banmaleng Village, Gili Raja Island, Sumenep Regency using the Canny edge detection algorithm on multitemporal Landsat 7 and 8 imagery in 2005 - 2020. The edging process includes (a) minimize noise by applying a Gaussian filter, (b) determine the image intensity gradient, (c) apply non-maximum emphasis to eliminate spurious responses to objects, (d) define multiple thresholds for determining potential image edges, (e) Track edge hysteresis by pressing all other weak edges that are not connected to firm edges. Canny edge detection produces sharp edges to analyze coastline changes quite well. Every five years, the coastline of Banmaleng Village experienced shifting from 0,4 to 2,3 meters in several areas.Keywords: Edge Detection, Landsat, Coastline, Canny Algorithm, Gili Raja
LAMA WAKTU OPERASI RAKKANG TERHADAP TANGKAPAN KEPITING BAKAU Dwi Rosalina; Eva Utami
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.10670

Abstract

ABSTRACTMangrove crab is one of typical species that live in mangrove areas. This species is fishery commodity that can be found entire coast of Indonesia. Pancur river, Jebus, West Bangka holds the potential resources of the mangrove crab. Rakkang is a the traditional type of fishing gear. This study aims to analyze effeective resr soaking duration of rakkang and to know effective time to catch the mangrove crab. This study use split plot design, then performed DUNCAN advance test using SAS V6. Data analysis by DUNCAN produce Fcount Ftable (5%), so that the catch result of mangrove crab were not significantly different. The precise time to catch the mangrove crab is in the morning or in the night with submersion duration. Effektive soaking time, of  Rakkang is 30 minutes.Keywords: mangrove crab,effective submersion duration, effective rakkang.ABSTRAKKepiting bakau adalah salah satu spesies khas yang hidup di kawasan bakau. Spesies ini merupakan komoditi perikanan yang dapat dijumpai di seluruh pantai Indonesia. Sungai Pancur, Kecamatan Jebus, Kabupaten Bangka Barat menyimpan potensi sumberdaya kepiting bakau yang besar. Alat tangkap rakkang ini merupakan jenis alat tangkap tradisional. Penelitian ini bertujuan untuk menganalisis lama perendaman yang efektif pada alat tangkap rakkang dan untuk mengetahui waktu yang efektif untuk menangkap kepiting bakau. Penelitian ini menggunakan metode  Rancangan Petak Terbagi (MRPT) lalu dilakukan uji lanjut DUNCAN menggunakan SAS v6. Data analisis dengan DUNCAN menghasilkan Fhitung FTabel  (5%), sehingga hasil tangkapan kepiting bakau tidak berbeda nyata. Penangkapan kepiting bakau dapat dilakukan pagi hari atau malam hari dan lama perendaman. Berdasarkan lama perendaman alat tangkap rakkang yang efektif adalah 30 menit.Kata kunci: Kepiting bakau, waktu perendaman efektif, alat tangkap rakkang/pintur.
Morphological Mapping of Seabed for Monitoring Sedimentation at Ulee Lheu Fishing Jetty Using Single Beam Dual Frequency Guntur Adhi Rahmawan; Koko Ondara; Ilham Adnan
Jurnal Kelautan Vol 14, No 2: Agustus (2021)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v14i2.10317

Abstract

ABSTRACTUlee Lheu Fishing Port Jetty is an important port in Banda Aceh City which functions as a crossing, loading and unloading port. The issue of sedimentation is the main problem. This study aims to determine the morphology of the seabed as the basis for monitoring sedimentation at the Ulee Lheu Fishing Port Jetty. Bathymetric surveys were carried out in the dock pool using a single beam echotrack odometer. Tides were obtained using the IOC Sea Level Monitoring for 29 days and analyzed using the admiralty method. The results of the processing showed that there was sedimentation in the area of the Ulee Lheu Fishing Port Jetty. The depth of the wharf pool ranges from 0-7,7 meters with a sediment volume of 250.117,15 m3. Meanwhile, the tidal water type is included in the double daily tidal type with a value of F = 0,15 and the tidal distance is 2,38 meters and is included in the micro tidal range category and there is sedimentation in the Ulee Lheu Fishing Port Jetty.Keywords: Bathymetry, sedimentation, morphology, Ulee Lheu Port, tidal rangeABSTRAKDermaga Perikanan Ulee Lheu merupakan pelabuhan penting di Kota Banda Aceh yang difungsikan sebagai pelabuhan penyeberangan maupun sebagai pelabuhan bongkar muat. Isu sedimentasi menjadi masalah utama di dermaga ini. Penelitian ini bertujuan untuk mengetahui morfologi dasar laut sebagai dasar pemantauan sedimentasi di Dermaga Perikanan Ulee Lheu. Survei batimetri dilakukan di kolam dermaga menggunakan echotrack odometer single beam. Pasang surut diperoleh menggunakan dari IOC Sea Level Monitoring selama 29 hari serta dianalisa menggunakan metode admiralty. Hasil pengolahan menunjukan terjadi sedimentasi di areal Dermaga Perikanan. Kedalaman kolam dermaga berkisar antara 0-7,7 meter dengan volume sedimen berkisar 250.117,15 m3. Sementara tipe pasang surut perairan termasuk dalam tipe pasang surut harian ganda dengan nilai F=0,15 serta jarak tunggang pasut sebesar 2,38 meter  dan termasuk dalam kategori mikro tidal range dan terdapat sedimentasi di bagian Dermaga Perikanan Ulee Lheu.Kata Kunci : Batimetri, Sedimentasi, Morfologi, Dermaga Perikanan Ulee Lheu, tunggang pasang surut

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