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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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The Mapping Of Shoreline Change Caused By Accretion And Abration As An Impact Of Tin Minning In Pangkalpinang Akhrianti, Irma; Nugraha, Moh Agung; Gustomi, Andi; Arizona, Mohammad Oka
Jurnal Kelautan Vol 17, No 3: Desember (2024)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v17i3.24969

Abstract

ABSTRACTBangka Island is the biggest tin producer in Indonesia. Pangkalpinang is the capital city of Bangka Belitung Archipelago which has 36 km2 shoreline and is one of the areas affected by anthropogenic activities especially tin minning activities. This study aims to determine the changes of position and rate of shoreline change in 2000 – 2022 using multitemporal imagery in Pangkalpinang. This study used remote sensing method (Algorhytm of Normalized Difference Water Index) and geographic information system with on screen digitation approach using DSAS (Digital Shoreline Analysis). Shoreline position measurement using the NSM analysis and rate of shoreline change using the EPR analysis. Digital image processing result showed that shoreline position at coastal region in Pangkalpinang has changed in 22 years. At sector A (Pasir Padi area), The land mass accretion/ maximum accretion occurred at Serata, Pasir Padi Beach adjacent to Batu Rusa estuary which was 63,6 m with shoreline rate change was approximately 2.89 m/year, while the land mass decreasement/ highest abration occurred in Pasir Padi Beach was 164,5 m with the shoreline rate change was approximately 7.48 m/ year. At sector B (Tanjung Bunga Area) abration occurred was -124.6 m with the shoreline rate change was approximately 5.66 m/year. At sector C (Sampur Beach Area) abration occurred was 81 m with shoreline rate change was 3.68 m/tahun. The average of shoreline change rate in Pangkalpinang affected by abration was 2.5 m/year while the average of shoreline change affected due to accretion was 2.89 m/year whereas there were 2 beaches in Pangkalpinang which did not experience the accretion, namely Tanjung Bunga Beach and Sampur Beach.Keywords: Shoreline, Pangkalpinang, Accretion, Abration, Tin Minning
Pola Arus Dan Sebaran Klorofil-a Di Perairan Laut Flores Pada Tahun 2021 Rosalina, Dwi; Rizkiah, Rizal; Wardono, Suko; Sutrisno, Bagus Oktori; Ismail, R. Moh; Leilani, Ani; Amiluddin, Muchtar
Jurnal Kelautan Vol 17, No 3: Desember (2024)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v17i3.25907

Abstract

ABSTRAKPola arus dan sebaran klorofil-a merupakan salah satu parameter terpenting dalam perairan untuk memahami dinamika ekosistem laut dan mendukung berbagai aktivitas terkait pemanfaatan sumber daya kelautan. Tujuan penelitian untuk mengetahui konsentrasi sebaran klorofil-a dan pola arus pada perairan Laut Flores tiap musimnya.Penelitian dilakukan pada  bulan Agustus sampai Oktober 2023 di Laboratorium Inderaja, Fakultas Ilmu Kelautan dan Perikanan Universitas Hasanuddin Makassar, Kota Makassar, Provinsi Sulawesi Selatan. Data yang digunakan adalah data bulanan selama satu tahun yang diambil dari satelit Aqua MODIS (Moderate Resolution Imaging Spectroradiometer) adalah data klorofil, sedangkan untuk data arus diambil dari Marine Copernicus. Hasil dari penelitian ini adalah Konsentrasi sebaran klorofil-a di perairan Laut Flores pada tahun 2021 menunjukkan bahwa sebaran klorofil-a sangat bervariasi sesuai dengan musimnya. Konsentrasi klorofil-a tertinggi terjadi pada musim peralihan I dan terendah terjadi pada musim peralihan II. Arus di perairan laut Flores kecepatan tertinggi terjadi pada musim barat dan terendah terjadi pada musim timur. Arus juga berpengaruh terhadap penyebaran nutrien dan fitoplankton yang mempengaruhi kesuburan dan produktivitas primer perairan. Adanya arus yang merupakan salah satu oseonografi menyebabkan nutrien dan klorofil-a akan mengalami persebaran sesuai dengan pergerakan massa air yang mempengaruhi. Kata kunci: Pola arus dan sebaran klorofil-aABSTRACTCurrent patterns and distribution of chlorophyll-a are one of the most important parameters in waters to understand the dynamics of marine ecosystems and support various activities related to the utilization of marine resources. The purpose of this study was to determine the concentration of chlorophyll-a distribution and current patterns in the Flores Sea waters each season. The study was conducted from August to October 2023 at the Inderaja Laboratory, Faculty of Marine Sciences and Fisheries, Hasanuddin University, Makassar City, South Sulawesi Province. The data used were monthly data for one year taken from the Aqua MODIS (Moderate Resolution Imaging Spectroradiometer) satellite, chlorophyll data, while current data was taken from Marine Copernicus. The results of this study are the concentration of chlorophyll-a distribution in the Flores Sea waters in 2021 showing that the distribution of chlorophyll-a varies greatly according to the season. The highest concentration of chlorophyll-a occurs in the transition season I and the lowest occurs in the transition season II. The current in the Flores Sea waters has the highest speed in the west season and the lowest in the east season. Currents also affect the distribution of nutrients and phytoplankton that affect the fertility and primary productivity of waters. The presence of currents which are one of the oceanographies causes nutrients and chlorophyll-a to experience distribution according to the movement of the water mass that affects it.Keywords: Current patterns and distribution of chlorophyll-a
Perubahan Penggunaan Lahan Di Pesisir Desa Pangarengan Kecamatan Pangarengan Kabupaten Sampang Jawa Timur Rahmansyah, Winarko Arif; Wardhani, Maulinna Kusumo; Sulistyo Rini, Dyah Ayu
Jurnal Kelautan Vol 17, No 3: Desember (2024)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v17i3.23696

Abstract

ABSTRAKIdentifikasi perubahan pemanfaatan lahan di wilayah pesisir perlu dilakukan secara berkala. Hal ini penting dilakukan untuk membantu memahami pengaruh perubahan lahan terhadap ekosistem. Tujuan penelitian ini mengidentifikasi perubahan penggunaan lahan di pesisir Desa Pangarengan Kecamatan Pangarengan Kabupaten Sampang dalam kurun waktu 10 tahun (2013-2023) menggunakan data citra satelit Landsat 8 OLI. Analisis citra satelit menggunakan Google Eart Engine (GEE) dengan metode klasifikasi tutupan lahan terbimbing (supervised classification).dan uji akurasi menggunakan confussion matrix. Kelas lahan mencakup mangrove, pemukiman, badan air, tambak, lahan kosong, dan sawah. Hasil penelitian menunjukkan perubahan signifikan terhadap perubahan lahan kosong (pasif) menjadi lahan produktif berupa lahan pergaraman dan pertanian. Penambahan luasan lahan pergaraman dipengaruhi oleh meningkatnya jumlah produksi garam sehingga terjadi ekspansi lahan. Selain itu juga terjadi pertambahan luasan lahan pada tahun 2023 yang kemungkinan dikarenakan pertamabahan luasan mangrove. Uji akurasi sebesar 86% dan dalam kategori sangat baik (acceptable result). Berdasarkan hasil penelitian ini, diperlukan penilaian ecosystem service value untuk menunjang pengelolaan yang konservatif dan efektif.Kata kunci: klasifikasi, perubahan penggunaan lahanABSTRACTChanges in land use in coastal areas need to be identified periodically. This study is important to help understand the impact of land use changes on the ecosystem. The purpose of this study was to identify changes in land use on the coast of Pangarengan Village, Pangarengan District, Sampang Regency, over 10 years (2013-2023) using Landsat 8 OLI satellite imagery data. Satellite image analysis using Google Eart Engine (GEE) with a supervised land cover classification method and accuracy testing using a confusion matrix. Land classes include mangroves, settlements, water bodies, ponds, vacant land, and rice fields. The results of the study showed significant changes in the change of vacant land (passive) into productive land in the form of salt and agricultural land. The increase influenced the increase in the amount of salt production in the area of salt land, so land expansion occurred. In addition, there was also an increase in land area in 2023, which was likely due to the addition of a mangrove area. The accuracy test was 86% and in the outstanding category (acceptable result). Based on the results of this study, an ecosystem service value assessment is needed to support conservative and effective management.Key words: classification, land-use change
Prevalensi Penyakit Dan Gangguan Kesehatan Karang Di Perairan Pulau Tidung Besar Kepulauan Seribu Aryamukti, Gusti Gilang; Yandri, Falmi; Kurniawan, Dedy
Jurnal Kelautan Vol 17, No 3: Desember (2024)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v17i3.23246

Abstract

ABSTRAKSalah satu pulau di Kepulauan Seribu yang banyak mendapatkan tekanan dari lingkungan sekitar, baik dari faktor alami maupun faktor antropogenik adalah Pulau Tidung Besar. Penelitian ini bertujuan menganalisis kondisi terumbu karang, prevalensi penyakit dan gangguan kesehatan karang di Perairan Pulau Tidung Besar. Penelitian ini dilaksanakan pada bulan November 2022 - Mei 2023 di Perairan Pulau Tidung Besar. Data yang diambil meliputi data kualitas perairan, bentuk pertumbuhan karang, serta penyakit dan gangguan kesehatan karang. Metode yang digunakan adalah metode LIT (Line Intercept Transect) untuk pengambilan data bentuk pertumbuhan karang dan metode Transek Sabuk (Belt Transect) untuk pengambilan data penyakit dan gangguan kesehatan karang. Selanjutnya dilakukan pengolahan data menggunakan perangkat lunak Microsoft Excel. Tutupan terumbu karang pada stasiun penelitian berada dalam kondisi buruk hingga baik. Penyakit dan gangguan kesehatan karang yang ditemukan pada stasiun penelitian antara lain, Predation, Black Band Disease, Brown Band Disease, Ulcrative White Spots, White Syndrome, Bleaching, Sediment Damage, Growth Anomalies, dan Pigmentation Response. Prevalensi keseluruhan penyakit dan gangguan kesehatan karang yang tertinggi berada pada staiun 3 sebesar 62,86%. Sediment Damage adalah yang paling banyak ditemukan di semua titik penelitian. Kondisi lingkungan perairan pada stasiun penelitian berdasarkan PP RI No.22 Tahun 2021 masih baik serta mendukung pertumbuhan karang.Kata Kunci: Prevalensi, Penyakit, Gangguan Kesehatan, Karang, Pulau Tidung BesarABSTRACTOne of the islands in the Kepulauan Seribu that receives a lot of pressure from the surrounding environment, both from natural and anthropogenic factors is Tidung Besar Island. This research aims to analyze condition of coral reefs, prevalence of coral disease and health problems in the waters of Tidung Besar Island. This research was conducted from November to May 2023 in the waters of Tidung Besar Island. The data collected included water quality data, coral growth forms, and coral disease and health problems. The method used was the Line Intercept Transect (LIT) method to collect data on coral growth forms and the Belt Transect method to collect data on coral disease and health problems. Furthermore, data processing is done using Microsoft Excel software. Coral cover at the research station is in poor to good condition. Coral diseases and health problems found at the research station include Predation, Black Band Disease, Brown Band Disease, Ulcrative White Spots, White Syndrome, Bleaching, Sediment Damage, Growth Anomalies, and Pigmentation Response. The overall prevalence of coral disease and health disorders was highest in station 3 at 62.86%. Sediment Damage is yes. The condition of the aquatic environment at the research station based on PP RI No.22 of 2021 is still good and supports coral growth.Keywords: Prevalence, Diseases, Health Disorders, Coral, Tidung Besar Island
Aktivitas Ikan Karang di Rumah Ikan Tahapary, Jacomina; Simbolon, Domu; Zulkarnain, Zulkarnain; Wiryawan, Budy
Jurnal Kelautan Vol 17, No 3: Desember (2024)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v17i3.25885

Abstract

ABSTRAK Rekayasa rumah ikan dengan memanfaatkan cangkang kerang mutiara merupakan salah satu inovasi dalam rangka menciptakan habitat buatan bagi ikan karang dan organisme karang lainnya. Penelitian ini bertujuan untuk menentukan aktivitas ikan pada rumah ikan. Pengamatan terhadap aktivitas ikan dilakukan dengan visual sensus, dan untuk data tersebut kemudian dianalisis secara deskriptif. Hasil pengamatan menunjukan bahwa ikan karang dan organisme lainnya yang berasosiasi dengan rumah ikan menggunakan rumah ikan untuk mencari makan maupun untuk berlindung. Spesies yang teramati melakukan aktivitas makan adalah Ctenochaetus striatus dan Zebrasoma rostratum. Spesies yang teramati memanfaatkan rumah ikan untuk berlindung adalah Chromis opercularis, Ctenochaetus striatus, Pomacentrus similis, Throcus niloticus, dan Pearsonothuria graeffei. Ketersediaan makanan pada struktur rumah ikan dan sekitarnya membuat ikan karang bergerak secara vertikal dan horisontal baik soliter maupun berkelompok untuk mencari makan. Struktur rumah ikan yang terdiri atas celah dan rongga membuat ikan karang dan organisme lainnya dapat berlindung dan berdiam di dalam struktur.Kata kunci: Aktivitas makan, Aktivitas berlindung, Ikan karang, Rumah ikanABSTRACTFish apartment engineering using pearl shells is one of the innovations in creating artificial habitats for reef fish and other coral organisms. This study aims to determine the activity of fish in the fish apartment. Observation of fish activity was carried out using a visual census, and the data was then analyzed descriptively. Observations showed that reef fish and other organisms associated with fish apartments use them for foraging and for shelter. Species observed for feeding activity were Ctenochaetus striatus and Zebrasoma rostratum. Species observed using fish apartment for shelter were Chromis opercularis, Ctenochaetus striatus, Pomacentrus similis, Throcus niloticus, and Pearsonothuria graeffei. The availability of food in the fish apartment structure and its surroundings makes reef fish move vertically and horizontally both solitary and in groups to find food. The structure of the fish apartment which consists of gaps and cavities allows reef fish and other organisms to take shelter and live in the structure   Keywords: Feeding Activities, Shellter activities, Coral fish, Fish apartment
Perbandingan Teknik Pengukuran Terumbu Karang Menggunakan Metode 2 Dimensi Dan 3 Dimensi Di Pulau Gili Labak, Sumenep Irawan, Dedi; Muhsoni, Firman Farid
Jurnal Kelautan Vol 17, No 3: Desember (2024)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v17i3.28127

Abstract

ABSTRAKKemajuan teknologi pada saat ini berpeluang mengembangkan metode penelitian, termasuk juga metode penelitian yang digunakan pada terumbu karang. Studi ini bertujuan untuk membandingkan teknik pengukuran terumbu karang menggunakan metode 2 dimensi (2D) dan 3 dimensi (3D) di Pulau Gili Labak, Metode 2D yang digunakan dalam penelitian ini adalah transek kuadrat dengan luas 2 meter dan Panjang 14 meter dan penghitungan secara visual, sementara metode 3D mengaplikasikan teknologi fotogrametri untuk memperoleh volume dari terumbu karang. Data yang dikumpulkan meliputi parameter-parameter fisik terumbu karang, seperti luas area, keragaman spesies, kondisi morfologi serta volume terumbu karang. Hasil penelitian menunjukkan bahwa meskipun metode 2D lebih sederhana dan lebih murah, akurasi pengukuran yang dihasilkan terbatas pada aspek visual dan linear tanpa informasi mendalam mengenai struktur vertikal terumbu karang. Sebaliknya, metode 3D memberikan representasi yang lebih akurat dan detail mengenai topografi terumbu karang, namun memerlukan biaya dan perangkat teknologi yang lebih tinggi. Perbandingan kedua metode ini menunjukkan bahwa pengukuran 3D dapat memberikan informasi yang lebih komprehensif mengenai kondisi terumbu karang, terutama dalam memetakan perubahan morfologi terumbu karang dari waktu ke waktu. Penelitian ini diharapkan dapat menjadi referensi dalam pemilihan metode pengukuran terumbu karang yang lebih efisien dan tepat guna, serta dapat digunakan dalam program konservasi dan rehabilitasi terumbu karang di Pulau Gili Labak dan kawasan serupa.Kata Kunci : Terumbu karang, Pengukuran 2D, Pengukuran 3D, Fotogrametri, Pulau Gili LabakABSTRACTCurrent technological advances have the potential to develop research methods, including research methods used on coral reefs. This study aims to compare coral reef measurement techniques using 2-dimensional (2D) and 3-dimensional (3D) methods on Gili Labak Island, one of the tourist locations that is always crowded with tourists for swimming and diving located in Sumenep Regency, Madura. Coral reef measurement is very important in monitoring and managing coral reef ecosystems that are vulnerable to environmental changes. The 2D method used in this study is a quadrat transect with an area of 2 meters and a length of 14 meters and visual calculations, while the 3D method applies photogrammetry technology to obtain the volume of coral reefs. The data collected include physical parameters of coral reefs, such as area, species diversity, morphological conditions and coral reef volume. The results of the study show that although the 2D method is simpler and cheaper, the accuracy of the measurements produced is limited to visual and linear aspects without in-depth information about the vertical structure of the coral reef. In contrast, the 3D method provides a more accurate and detailed representation of coral reef topography, but requires higher costs and technological devices. The comparison of these two methods shows that 3D measurements can provide more comprehensive information on coral reef conditions, especially in mapping changes in coral reef morphology over time. This study is expected to be a reference in selecting more efficient and appropriate coral reef measurement methods, and can be used in coral reef conservation and rehabilitation programs on Gili Labak Island and similar areas.Keywords : coral reef, 2D measurements, 3D measurements, Photogrammetry, Gili Labak Island
Analisis Keberlanjutan Pengelolaan Kawasan Konservasi Penyu Di Pesisir Pangandaran, Jawa Barat Oktavianti, Lestari; Pamungkas, Wahyuniar; MS, Yuniarti; Yuliadi, Lintang Permata Sari
Jurnal Kelautan Vol 18, No 2: Agustus (2025)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v18i2.31230

Abstract

ABSTRAKPenyu merupakan salah satu reptil laut yang kini keberadaannya terancam punah. Kawasan konservasi penyu memiliki peran penting dalam menjaga keberlangsungan penyu. Konservasi penyu yang terdapat di Pangandaran, diantaranya berada di pesisir pantai Batu Hiu dan Legokjawa. Pengelolaan kawasan konservasi tersebut dinilai masih kurang optimal, sehingga diperlukan perbaikan pengelolaan agar dapat berjalan secara berkelanjutan. Penelitian ini bertujuan untuk menganalisis status keberlanjutan pengelolaan konservasi penyu di Pantai Batu Hiu dan Legok Jawa, Kabupaten Pangandaran ditinjau dari dimensi ekologi, ekonomi, sosial, kelembagaan, dan infrastruktur. Metode analisis yang digunakan dalam penelitian ini adalah Multidimensional Scaling (MDS) dengan bantuan Rapfish. Hasil analisis menunjukkan bahwa status keberlanjutan konservasi penyu di Batu Hiu dan Legok Jawa berada pada kategori cukup berkelanjutan dengan nilai indeks masing-masing sebesar 62,43% dan 56,35%. Seluruh dimensi yang dianalisis menunjukkan status keberlanjutan dengan kategori cukup berkelanjutan. Di kawasan konservasi Batu Hiu, dimensi infrastruktur memiliki nilai tertinggi sebesar 73,36%, sedangkan dimensi ekologi memperoleh nilai terendah 53,93%, kemudian dimensi sosial memperoleh nilai 71,44%, ekonomi 55,53%, dan kelembagaan 57,92%, Sementara pada konservasi Legok Jawa, dimensi ekologi memiliki nilai tertinggi sebesar 65,61%, sedangkan dimensi ekonomi memiliki nilai terendah 51,54%. Kemudian dimensi lainnya, yaitu dimensi sosial memiliki nilai 54,61%, dimensi kelembagaan 54,58%, dan dimensi infrastruktur 55,41%. Kata Kunci: Konservasi Penyu, Keberlanjutan, MDS, PengelolaanABSTRACTSea turtles are one of the marine reptiles that are now threatened with extinction. Sea turtle conservation areas play an important role in ensuring the survival of sea turtles. Sea turtle conservation areas in Pangandaran include those located on the coast of Batu Hiu and Legokjawa. The management of these conservation areas is considered to be less than optimal, so improvements are needed to ensure sustainable management. This study aims to analyze the sustainability status of sea turtle conservation management at Batu Hiu and Legok Jawa beaches in Pangandaran District, focusing on ecological, economic, social, institutional, and infrastructure dimensions. The analysis method used in this study is Multidimensional Scaling (MDS) with the assistance of Rapfish. The analysis results indicate that the sustainability status of sea turtle conservation at Batu Hiu and Legok Jawa falls into the moderately sustainable category, with index values of 62.43% and 56.35%, respectively. All analyzed dimensions show a moderately sustainable status. At the Batu Hiu conservation area, the infrastructure dimension has the highest value at 73.36%, while the ecological dimension had the lowest value of 53.93%, followed by the social dimension with a value of 71.44%, the economic dimension with 55.53%, and the institutional dimension with 57.92%. Meanwhile, in the Legok Jawa conservation area, the ecological dimension had the highest value of 65.61%, while the economic dimension had the lowest value of 51.54%. The other dimensions are as follows: the social dimension has a value of 54.61%, the institutional dimension 54.58%, and the infrastructure dimension 55.41%. Keywords: Sea Turtle Conservation, Sustainability, MDS, Management
Keanekaragaman Lamun dan Echinodermata Sebagai Indikator Kondisi Perairan Rumaat, Maluku Tenggara Silaban, Rosita; Dobo, Johny; Silubun, Dortje Theodora; Awayal, Dion Dollan; kilmanun, Anthon Daud
Jurnal Kelautan Vol 18, No 2: Agustus (2025)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v18i2.29587

Abstract

ABSTRAKEchinodermata merupakan salah satu hewan yang sangat penting dalam ekosistem laut dan bermanfaat sebagai salah satu komponen dalam rantai makanan, pemakan sampah organik dan hewan kecil lainnya. Echinodermata merupakan hewan avertebrata yang hanya dapat hidup di perairan laut dengan berbagai tipe habitat, salah satunya adalah padang lamun. Padang lamun yang begitu luas memungkinkan banyaknya biota yang hidup berasosiasi dengan lamun seperti alga, Moluska, Crustacea, mamalia, ikan dan Echinodermata. Tujuan penelitian ini yaitu mengetahui kerapatan lamun, kepadatan Echinodermata, indeks ekologi serta hubungan kerapatan lamun dan kepadatan Echinodermata. Komposisi jenis lamun diperoleh 8 spesies dan Echinodermata sebanyak 9 spesies di perairan Rumaat. Lamun perairan Rumaat menunjukan kondisi tumbuh sangat rapat dengan kerapatan tertinggi spesies Thalassia hemprichii. Kepadatan Echinodermata tertinggi dari spesies Holothuria atra. Keanekaragaman lamun dan Echinodermata dikategorikan sedang yang menunjukan kondisi stabil. Kesergaman lamun dan Echinodermata tergolong sedang menunjukan tidak adanya tekanan dari faktor lingkungan. Indeks dominansi yang rendah menunjukkan bahwa di lokasi ini tidak ada spesies yang mendominasi. Hasil uji regresi kerapatan lamun dan kepadatan Echinodermata tidak memiliki pengaruh yang nyata.Kata kunci:  keanekaragaman, lamun, Echinodermata, RumaatABSTRACTEchinoderms is are one of the most important animals in the marine ecosystem and is useful as one of the components in the food chain, eating organic waste and other small animals. Echinoderms and are invertebrate animal that can only live in sea waters with various types of habitats, one of which is seagrass beds. The vast seagrass beds allow many organism to live in association with seagrass including algae, Molluscs, Crustacea, mammals, fish and Echinoderms. The purpose of this study was to determine the density of seagrass, the density of Echinoderms, the ecological index and the relationship between seagrass density and Echinoderms density. The composition of seagrass species obtained 8 species and Echinoderms as many as 9 species in the Rumaat waters. Seagrass in the Rumaat waters showed very dense growth conditions with the highest density of the Thalassia hemprichii species. The highest density of Echinoderms from the Holothuria atra species. The diversity of seagrass and Echinoderms is categorized as moderate indicating a stable condition. The uniformity of seagrass and Echinoderms is classified as moderate indicating no pressure from environmental factors. The low dominance index indicates that there is no dominant species in this location. The results of the regression test of seagrass density and Echinoderms density have no significant effect.Keywords: diversity, seagrass, Echinoderms, Rumaat
Studi Karakteristik Massa Air Pada Lapisan Termoklin Di Selat Makassar Supriyanto, Taufiq; Apriyanto, I Nengah Putra; Irwanto, Bambang; Adriyanto, Agus; Purwanto, Budi; Agustinus, Agustinus; Pranowo, Widodo S
Jurnal Kelautan Vol 18, No 2: Agustus (2025)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v18i2.29829

Abstract

ABSTRAKSelat Makassar merupakan jalur strategis antara Kalimantan dan Sulawesi yang menghubungkan Samudera Pasifik dan Samudera Hindia. Selain menjadi rute pelayaran internasional penting, wilayah ini juga rawan terhadap ancaman keamanan seperti ranjau laut dan drone bawah air, sehingga membutuhkan pengawasan ketat dan kerja sama lintas sektor. Penelitian ini bertujuan untuk mengeksplorasi karakteristik kolom air, khususnya lapisan termoklin yang berpotensi menjadi wilayah persembunyian (Shadowzone), pada kedalaman 0–300 meter di choke point Selat Makassar. Data suhu dan salinitas terhadap kedalaman diperoleh dari pengukuran argo float selama periode Oktober 2017 hingga Januari 2018. Perhitungan kecepatan rambat suara dilakukan menggunakan persamaan empiris Medwin. Lapisan termoklin diidentifikasi melalui gradien suhu sebesar 0,1°C per meter. Visualisasi dan analisis data dilakukan menggunakan perangkat lunak ODV 5.6.2. Hasil penelitian menunjukkan bahwa lapisan termoklin berada pada kedalaman 86,4–158,1 meter, dengan suhu 16,79–27,98°C, salinitas 33,75–34,67‰, dan kecepatan suara 1514,19–1541,95 m/s. Ketebalan lapisan sekitar 72 meter ini diindikasikan sebagai Shadowzone yang potensial menjadi lokasi persembunyian objek bawah laut.Kata Kunci: Selat Makassar, Lapisan termoklin, Suhu, Salinitas, Kecepatan SuaraABSTRACTThe Makassar Strait is a strategic route between Kalimantan and Sulawesi that connects the Pacific Ocean and the Indian Ocean. In addition to being an important international shipping route, this area is also prone to security threats such as sea mines and underwater drones, requiring strict surveillance and cross-sector cooperation. This study aims to explore the characteristics of the water column, particularly the thermocline layer that has the potential to become a hiding place (Shadowzone), at a depth of 0–300 metres at the Makassar Strait choke point. Temperature and salinity data at different depths were obtained from argofloat measurements during the period from October 2017 to January 2018. Sound propagation velocity calculations were performed using the Medwin empirical equation. The thermocline layer was identified through a temperature gradient of 0.1°C per metre. Data visualisation and analysis were conducted using ODV 5.6.2 software. The results of the study show that the thermocline layer is located at a depth of 86.4–158.1 metres, with a temperature of 16.79–27.98°C, salinity of 33.75–34.67‰, and sound velocity of 1514.19–1541.95 m/s. The thickness of this layer, approximately 72 metres, is indicated as a potential shadow zone for the hiding of underwater objects.Keywords: Makassar Strait, Thermocline Layer, Temperature, Salinity, Sound Velocity 
Analisis Hubungan Antara Suhu Permukaan Laut Dengan Hasil Tangkapan Ikan di Teluk Ciletuh, Kabupaten Sukabumi Suryapratama, Ralvikrana Bobby; MS, Yuniarti.; Subiyanto, Subiyanto; Ismail, Mochamad Rudyansyah
Jurnal Kelautan Vol 18, No 2: Agustus (2025)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v18i2.30742

Abstract

ABSTRAKPotensi di Teluk Ciletuh menjadi perhatian besar baik dari segi pemerintahan maupun masyarakat pesisir dalam peningkatan ekonomi biru hingga industri kreatif pariwisata. Berdasarkan data tangkapan ikan dari Dinas Perikanan Kabupaten Sukabumi dan Kantor Tempat Pelelangan Ikan di Teluk Ciletuh, hasil tangkapan ikan sejak 2019 hingga 2023 mengalami fluktuasi yang lebih rendah jika dibandingkan dengan hasil tangkapan ikan di Teluk Genteng dan Palabuhanratu. Penelitian ini akan berfokus pada uji korelasi statistik untuk mengetahui seberapa besar korelasi antara suhu permukaan laut dengan hasil tangkapan ikan di Teluk Ciletuh, Kabupaten Sukabumi. Metode penelitian meliputi pengumpulan data sekunder dengan citra satelit Sentinel-3, visualisasi data, uji normalitas, dan uji statistik yang menggunakan statistik inferensial yaitu uji korelasi. Hasil dari penelitian menunjukkan bahwa nilai distribusi data pada setiap jenis ikan yaitu terdapat 11 jenis ikan bernilai distribusi normal, dan 15 jenis ikan berdistribusi tidak normal. Hasil uji korelasi antara suhu permukaan laut dengan hasil tangkapan ikan di Teluk Ciletuh menunjukkan bahwa hanya 5 dari 26 jenis ikan yang berkorelasi dan signifikan  0.05 secara statistik.Kata kunci: Hasil Tangkapan Ikan, Uji Korelasi, Uji Normalitas, Suhu Permukaan LautABSTRACTThe potential of Ciletuh Bay is of great concern both in terms of government and coastal communities in improving the blue economy to the creative tourism industry. Based on fish catch data from the Sukabumi Regency Fisheries Service and the Fish Auction Office in Ciletuh Bay, fish catches from 2019 to 2023 experienced lower fluctuations when compared to fish catches in Genteng Bay and Palabuhanratu. This research will focus on statistical correlation test to determine how much correlation between sea surface temperature and fish catch in Ciletuh Bay, Sukabumi Regency. The research method includes secondary data collection with Sentinel-3 satellite imagery, data visualization, normality test, and statistical test using inferential statistics, namely correlation test. The results of the study showed that the value of data distribution in each type of fish is that there are 11 types of fish with normal distribution, and 15 types of fish with abnormal distribution. The results of the correlation test between sea surface temperature and fish catch in Ciletuh Bay showed that only 5 out of 26 fish species were correlated and statistically significant  0.05.Keywords: Fish Catch, Correlation Test, Normality Test, Sea Surface Temperature

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