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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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Abundace and Potential of Megabenthos in The Banda Sea Waters Tourism Park in Lonthoir Village, Banda Island, Central Maluku Dwi Rosalina; Anisa Aulia Sabilah; Yasser Arafat; Muchtar Amiluddin; A Sri Dewi Syamsul
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.22140

Abstract

ABSTRACTMegabenthos are benthic biota with a size of more than 1 cm and are found living on the bottom of the water, either in coral reef or seagrass ecosystems. Megabenthos also provides benefits to the economy of the surrounding community. This research was conducted in the Banda Sea Tourism Park Area, Lonthoir Village, Banda Islands, Central Maluku, from February 11th to April 21st, 2022. This study aims to determine the type, abundance, and potential of megabenthos in the Banda Sea Waters Tourism Park. Data collection at the observation station is done using the quadratic linear transect method, which is drawn along 400 meters perpendicular to the sea and 300 meters parallel to the coastline with a quadrant size of 10 x 10 m2 with a distance of 10 m between quadrants and a distance of 30 m between transects. From the results of the research carried out, 6 classes of Megabenthos were found, namely Gastropoda, Bivalvia, Holothoroidea, Asteroidea, Echinoidea, and Malacostraca. The Gastropoda class is the megabenthos that is most commonly found in the Banda Sea Marine Tourism Park, namely 1118 individuals with an abundance value of 0.072 ind/m2 and a potential value of 8600 ind. while the lowest class is the Asteroidea class with 20 individuals with an abundance value of 0.011 ind/m2 and a potential of 1333 ind and Malacostraca with 9 individuals with an abundance value of 0.011 ind/m2 and a potential of 1350 ind. The high potential for megabenthos in the waters of the Banda Marine Tourism Park can be influenced by the high population of various marine biota.Keywords: Abundance, Banda Sea, Megabenthos, PotentialABSTRAKMegabentos merupakan biota bentik dengan ukuran lebih dari 1 cm dan ditemukan hidup di dasar perairan baik pada ekosistem terumbu karang atau padang lamun. Megabentos juga memberi manfaat terhadap ekonomi masyarakat sekitar. Penelitian ini dilaksanakan di Kawasan Taman Wisata Perairan Laut Banda, Desa Lonthoir, Kepulauan Banda Maluku Tengah pada 11 Februari sampai 21 April 2022. Penelitian ini bertujuan untuk mengetahui jenis, kelimpahan, dan potensi megabentos di Taman Wisata Perairan Laut Banda. Pengambilan data pada stasiun pengamatan dengan menggunakan Metode Transek Linier Kuadrat yang ditarik sepanjang 400 meter tegak lurus ke arah laut dan 300 m sejajar garis pantai dengan ukuran kuadran 10 x 10 m2 dengan jarak 10 m antar kuadran, serta jarak antar transek 30 m. Dari hasil penelitian yang dilakukan, ditemukan 6 kelas Megabentos, yaitu Gastropoda, Bivalvia, Holothoroidea, asteroidea, Echinoidea, dan Malacostraca. Kelas Gastropoda merupakan megabenthos yang paling banyak ditemukan di Taman Wisata Bahari Laut Banda yaitu sebanyak 1118 individu dengan nilai kelimpahan 0,072 ind/m2 dan nilai potensi 8600 ind. sedangkan kelas terendah ialah Kelas Asteroidea sebanyak 20 individu dengan nilai kelimpahan 0,011 ind/m2 dan potensi 1333 ind dan Malacostraca sebanyak 9 individu dengan nilai kelimpahan 0,011 ind/m2 dan potensi 1350 ind. Tingginya Potensi megabentos diperairan Taman Wisata Laut Banda, dapat berpengaruh dengan tingginya populasi berbagai biota laut.Kata kunci: Kelimpahan, Megabenthos, Potensi, Laut Banda
Karakteristik Mikroplastik pada Ikan Kakatua Anglu (Chlorurus sordidus) dan Ikan Kurisi Sirip Pucat (Nemipterus thosaporni) di Perairan Teluk Jakarta Shinta Cahyaning Dewi; Aunurohim Aunurohim; Dian Saptarini
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.22811

Abstract

ABSTRAKPencemaran laut oleh plastik saat ini menjadi ancaman penting karena meningkat secara signifikan hingga mencapai 47-85% setiap tahunnya. Sampah plastik dapat terfragmentasi menjadi lebih kecil atau disebut mikroplastik yang mempunyai ukuran 5 mm. Permasalahan mikroplastik juga banyak ditemukan di Indonesia, salah satunya adalah perairan Teluk Jakarta sebagai sumber perikanan demersal. Jenis ikan demersal yang mempunyai nilai ekonomi tinggi antara lain ikan kakaktua anglu (Chlorurus sordidus) yang merupakan ikan herbivora dan ikan kurisi sirip pucat (Nemipterus thosaporni) yang merupakan ikan omnivora. Tujuan penelitian ini adalah untuk mengidentifikasi karakteristik mikroplastik pada insang, gastrointestinal, dan daging pada dua ikan tersebut. Karakteristik mikroplastik diamati menggunakan mikroskop stereo dengan bantuan OptiLab. Kelimpahan mikroplastik pada 10 ekor ikan kakatua anglu sebesar 132,75 partikel/gram pada insang, 146,4 partikel/gram pada gastrointestinal, dan 32,2 partikel/gram pada daging. Pada 10 ekor ikan kurisi sirip pucat terdapat 120,5 partikel mikroplastik/gram pada insang, 219,75 partikel/gram pada gastrointestinal, dan 27,7 partikel/gram pada daging. Bentuk yang dominan pada ketiga organ dari kedua jenis ikan adalah bentuk fragmen dan warna yang dominan adalah hitam.Kata Kunci: Daging, Insang, Gastrointestinal, Mikroplastik, Teluk JakartaABSTRACTPollution in the sea by plastic is currently an important threat because it has increased significantly to reach 47-85% each year. Plastic waste can be fragmented into smaller pieces or called microplastics which have a size of 5 mm. Microplastic problems are also found in Indonesia, one of which is the Jakarta Bay waters as a source of demersal fishery. Demersal fish species that have high economic value include the anglu parrotfish (Chlorurus sordidus) which is a herbivorous fish and the palefin bream fish (Nemipterus thosaporni) which is an omnivore fish. The purpose of this study was to identify the characteristics of microplastics in the gills, gastrointestinal, and flesh in different two species. The characteristics of microplastics were observed using a stereo microscope with the help of OptiLab. The abundance of microplastics in 10 anglu parrot fish was 132,75 particles/gram in the gills, 146,4 particles/gram in the gastrointestinal, and 32,2 particles/gram in the flesh. In 10 palefin bream fish, there were 120,5 microplastic particles/gram in the gills, 219,75 particles/gram in the gastrointestinal, and 27,7 particles/gram in the flesh. The dominant shape of the three organs of both species of fish is the fragment shape and the dominant color is black.Key words: Flesh, Gastrointestinal, Gill, Jakarta Bay, Microplastics
Sebaran Ukuran dan Pola Pertumbuhan Kepiting Bakau (Scylla spp.) Pada Ekosistem Mangrove di Perairan Debut, Maluku Tenggara Rosita Silaban; Johny Dobo; Dortje Thedora Silubun; Barzan Borut
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.22536

Abstract

ABSTRAKPermintaan terhadap kepiting bakau ini meningkat dari waktu ke waktu, sementara memenuhi permintaan tersebut masih mengandalkan penangkapan di alam. Penangkapan kepiting bakau yang tidak memperhatikan kelestariannya, dikhawatirkan akan menurunkan populasi dari kepiting bakau tersebut. Tujuan penelitian yaitu mengetahui kepadatan, pola distribusi, struktur ukuran, pola pertumbuhan dari kepiting bakau dan kerapatan mangrove. Pengumpulan sampel kepiting bakau menggunakan metode line plot transect. Data komunitas mangrove dikumpulkan dengan menggunakan metode transek kuadrat. Kepadatan kepiting bakau berdasarkan jenis diperoleh jenis Scylla tranquebarica memiliki kepadatan tertinggi yaitu sebesar 0,0050 ind/m2 sedangkan kepadatan terendah dari jenis Scylla olivacea sebesar 0.0025 ind/m2. Pola penyebaran kepiting bakau adalah mengelompok dengan nilai Id=1.20. Kepiting bakau yang tertangkap memiliki karapas yang berukuran panjang berkisar 9-19 cm dan lebar berkisar 12-22 cm, kaki renang berkisar 8-17 cm, kaki jalan I berkisar 10-22 cm, kaki jalan II berkisar 13-25 cm, kaki jalan III berkisar 12-23 cm, cheliped berkisar 15-35 cm serta berat berkisar 0.34-4.0 kg. Analisis hubungan panjang karapas-berat didapatkan persamaan W = 2.853L0.184 dengan nilai koefisien determinasi (R2) sebesar 0.994 sedangkan lebar karapas-berat didapatkan persamaan W = 3.239L0.197 dengan nilai koefisien determinasi (R2) sebesar 0.997. Jenis mangrove yang diperoleh pada daerah tangkapan kepiting bakau adalah jenis Rhizophora spp. tertinggi adalah jenis Rhizophora stylosa sebesar 0.198 ind/m2 dan terendah adalah jenis Rhizophora apiculata sebesar 0.129 ind/m2.Kata kunci:  kepiting bakau; mangrove; pertumbuhanABSTRACTThe demand for mud crabs has increased over time, while meeting this demand still relies on catching them in the wild. It is feared that catching mud crabs that do not pay attention to their sustainability will reduce the population of mud crabs. The aim of the research is to determine the density, distribution pattern, size structure, growth pattern of mangrove crabs and mangrove density. Mud crab samples were collected using the line plot transect method. Mangrove community data was collected using the quadrat transect method. Based on the type of mangrove crab density, it was found that the Scylla tranquebarica type had the highest density, namely 0.0050 ind/m2, while the lowest density of the Scylla olivacea type was 0.0025 ind/m2. The distribution pattern of mud crabs is clustered with a value of Id=1.20. The caught mud crabs have a carapace measuring around 9-19 cm long and a width ranging from 12-22 cm, swimming legs ranging from 8-17 cm, walking legs I ranging from 10-22 cm, walking legs II ranging from 13-25 cm, walking legs III ranges from 12-23 cm, cheliped ranges from 15-35 cm and weighs around 0.34-4.0 kg. Analysis of the relationship between carapace length and weight obtained the equation W = 2.853L0.184 with a coefficient of determination (R2) of 0.994, while carapace width and weight obtained the equation W = 3.239L0.197 with a coefficient of determination (R2) value of 0.997. The type of mangrove obtained in the mangrove crab catchment area is Rhizophora spp. The highest was the Rhizophora stylosa type at 0.198 ind/m2 and the lowest was the Rhizophora apiculata at 0.129 ind/m2.Key words: mud crab; mangroves; growth
Kandungan Logam Berat di Perairan Pulau Merak Kecil Risma Millenia Cantika; Agung Setyo Sasongko; Ferry Dwi Cahyadi
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.20584

Abstract

ABSTRAKKota Cilegon memiliki berbagai potensi wisata alam khususnya wisata bahari. Salah satu wisata alam bahari yang sangat berpotensi adalah Pulau Merak Kecil. Pulau Merak Kecil merupakan salah satu destinasi wisata bahari di Kota Cilegon yang memiliki banyak potensi. Ketertarikan masyarakat akan wisata alam berkembang pesat khususnya wisata alam terbuka salah satunya adalah wisata bahari. Wisata bahari Pulau Merak Kecil ini belakangan ramai dikunjungi oleh wisatawan dalam kota maupun wisatawan luar kota. Kejadian Covid-19 yang terjadi dua tahun belakang ini membuat masyarakat lebih memilih wisata alam khususnya wisata bahari. Perairan sekitar Pulau Merak Kecil rentan terhadap pencemaran logam berat yang timbul oleh aktivitas manusia maupun aktivitas ekonomi melalui kapal-kapal yang berlayar di sekitar perairan Pulau Merak Kecil. Penelitian ini bertujuan untuk mengetahui kandungan logam berat timbal (Pb), tembaga (Cu), dan Kadmium (Cd) dan dibandingkan dengan Lampiran VIII PP No. 22 Tahun 2021. Metode penelitian menggunakan metode deskriptif kuantitatif. Pengecekan logam berat dilakukan di di Laboratorium Dinas Lingkungan Hidup dan Kehutanan di Kawasan Pusat Pemerintahan Provinsi Banten (KP3B) Banten. Hasil penelitian menunjukan perairan Pulau Merak Kecil mengkhawatirkan karena dari tiga logam berat, dua diantaranya di atas baku mutu.Kata Kunci : Cilegon, logam berat, Pulau Merak Kecil, Peraturan Pemerintah No. 22 Tahun 2021ABSTRACTCilegon has various natural tourism potentials, especially marine tourism. One of the potential marine natural attractions is Pulau Merak Kecil. Pulau Merak Kecil is one of the marine tourism destinations which has a lot of potential. Public interest in natural tourism is growing rapidly, especially outdoor tourism, one of which is marine tourism. Marine tourism on Merak Kecil Island has recently been visited by tourists in the city and tourists outside the city. The Covid-19 incident that occurred in the past two years has made people prefer natural tourism, especially marine tourism. The waters around Pulau Merak Kecil are vulnerable to heavy metal pollution arising from human activities and economic activities through ships sailing around the waters of Pulau Merak Kecil. This study aims to determine the content of heavy metals lead (Pb), copper (Cu), and Cadmium (Cd) and compared with Appendix VIII of Government Regulation No. 22 of 2021. The research method used quantitative descriptive method. Heavy metal checks were carried out at the Environmental and Forestry Service Laboratory in the Banten Provincial. The results showed that the waters of Merak Kecil Island are worrying because of the three heavy metals, two of which are above the quality standard.Keywords: Cilegon, heavy metals, Pulau Merak Kecil, Government Regulation No. 22 Year 2021
Kepadatan dan Keanekaragaman Animal Fouling Pada Dermaga Beton di Pulau Harapan, Balai Taman Nasional Kepulauan Seribu Katarina Hesty Rombe; Dwi Rosalina; Jusliana Jusliana; Agus Surachmat; Yasser Arafat; Hawati Hawati; Moh. Roin Najih; Muchtar Amiluddin; Abdul Rahman; Roni Hermawan
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.21201

Abstract

ABSTRAKAnimal fouling merupakan organisme multisel besar dan berbeda yang terlihat oleh mata manusia seperti teritip, cacing tabung, atau daun alga dan sebagainya yang bersifat merusak. Animal fouling menjadi perhatian yang serius untuk struktur-struktur buatan yang berada di wilayah laut atau pantai dimana penempelan dari fouling pada permukaan struktur (substrat) dapat mempengaruhi berat mati struktur dan kecepatan laju hidrodinamik pada kapal laut, bahkan bisa berpengaruh pada bangunan seperti dermaga. Penelitian ini bertujuan untuk menghitung komposisi jenis, kepadatan, keanekaragaman dan mengukur parameter kualitas air di Pualu Harapan. Pengambilan data fouling dilakukan dengan menggunakan frame 20 x 54 cm. Pengamatan dilakukan sebanyak 2 stasiun, dimana setiap stasiun terdiri dari 20 substasiun. Dari hasil pengamatan didapatkan 3 kelas fouling, yaitu kelas bivalvia, thecostraca dan gastropda. Pada dermaga beton di kedua stasiun ditemukan 3 kelas fouling. Kelas bivalvia lebih mondominasi yaitu 99%, sementara kelas thecostraca ditemukan 0.38% dan kelas gastropoda 0.37%. Kerapatan dari kelas bivalvia ditemukan dengan rata-rata kepadatan 50173 ind/m², sementara kelas thecostraca 194 ind/m² dan kelas gastropoda 189 ind/m². Keanekaragaman pada stasiun 1 dan stasiun 2 menunjukkan nilai indeks keanekaragaman (H’) dengan nilai indeks 2,0, yang berarti tingkat keanekaragaman fouling pada masing-masing stasiun masuk kategori rendah. Hasil pengukuran kualitas air yang dilakukan di lokasi praktik ditemukan suhu  31.4 ⁰C - 31.8 ⁰C, salinitas 25 ⁰/ₒₒ -  30 ⁰/ₒₒ dan pH yang ditemukan yaitu 6. pH ini merupakan masih batas toleransi dari kehidupan fouling.Kata Kunci : Animal Fouling; Komposisi Jenis; Kepadatan; Keanekaragaman; Parameter Kualitas Air.ABSTRACTAnimal fouling is a large and different multicellular organism visible to the human eye such as barnacles, tube worms, or algae leaves and so on that are destructive. Animal fouling is a serious concern for artificial structures located in marine or coastal areas where the attachment of fouling to the surface of the structure (substrate) can affect the dead weight of the structure and the speed of hydrodynamic rates on ships, and can even affect buildings such as docks. This data collection aims to calculate the type composition, density, diversity and measure water quality parameters in Pualu Harapan. Fouling data collection is carried out using a 20 x 54 cm frame. Observations were made as many as 2 stations, where each station consisted of 20 substations. From the observations, 3 classes of fouling were obtained, namely the bivalve class, thecostraca and gastropda. On the concrete piers at both stations found 3 classes of fouling. The bivalve class is more dominant at 99%, while the thecostraca class is found to be 0.38% and the gastropod class is 0.37%. The density of the bivalve class was found with an average density of 50173 ind/m², while the thecostraca class was 194 ind/m² and the gastropod class was 189 ind/m². diversity at station 1 and station 2 shows a diversity index value (H') with an index value of 2.0, which means the level of fouling diversity at each station is in the low category. The results of water quality measurements carried out at the practice site found temperatures of 31.4 ⁰C - 31.8 ⁰C, salinity 25 ⁰ / ₒₒ - 30 ⁰ / ₒₒ and pH found to be 6. This pH is still the tolerance limit of fouling lifeKeywords : Animal Fouling; Density; Diversity; Type Composition; Water Quality Parameters.
Struktur Komunitas dan Kelimpahan Makrozoobenthos di Ekowisata Mangrove Lembung, Kecamatan Galis, Kabupaten Pamekasan Akhmad Farid; Rifani Dwi Tauriqie; Apri Arisandi
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.20370

Abstract

ABSTRAKMakrozoobenthos merupakan salah satu biota yang hidup di ekosistem mangrove, makrozoobenthos berperan untuk membantu mempercepat proses dekomposisi dan mineralisasi materi organik. Tujuan penelitian adalah mengetahui tentang struktur komunitas dan kelimpahan makrozoobenthos di ekowisata mangrove lembung, kecamatan galis, kabupaten pamekasan sehingga diperoleh informasi dan data base dalam pengelolaan yang bekelanjutan. Lokasi penelitian pada ekosistem mangrove di Desa Lembung Kecamatan Galis Kabupaten Pamekasan . Metode penganbilan data menggunakan metode transek dengan analisis datanya menggunakan indeks Shannon-Winner. Nilai tertinggi kelimpahan individu dan relatif adalah spesies Cerithium coralium. indeks ekologi yang didapat menunjukkan kriteria indeks keanekaragaman (H’) sedang, di setiap stasiun, indek keseragaman (E) sedang hingga tinggi dan nilai indeks dominansi (C) rendah, hal ini disebabkan oleh keberadaan biota yang mendominansi daerah Ekowisata Mangrove Lembung sehingga daerah tersebut termasuk pada kriteria stabil.Kata Kunci: Mangrove, Struktur Komunitas, Makrozoobenthos, Desa LembungABSTRACTMakrozoobenthos is one of the biota that lives in mangrove ecosystems, macrozoobenthos plays a role to help accelerate the process of decomposition and mineralization of organic matter. The purpose of the study was to know about the community structure and abundance of macrozoobenthos in lembung mangrove ecotourism, Galis District, Pamekasan Regency so that information and data base are obtained in sustainable management. The location of research on mangrove ecosystems in Lembung Village, Galis District, Pamekasan Regency. The data collection method uses the transect method with data analysis using the Shannon-Winner index. The highest value of individual and relative abundance is the species Cerithium coralium. The ecological index obtained shows the criteria of a moderate diversity index (H'), at each station, medium to high uniformity index (E) and low dominance index (C) value, this is due to the presence of biota that dominates the Lembung Mangrove Ecotourism area so that the area is included in the stable criteria.Keywords: Mangrove, Community Structure, Makrozoobenthos, Lembung Village
Model Hidrodinamika 2 Dimensi Gelombang Laut Permukaan di Sekitar Lokasi Reklamasi Kota Tanjungpinang Desi Nurlianti; Mario Putra Suhana; Risandi Dwirama Putra
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.15543

Abstract

ABSTRAKPesisir dan pantai Kota Tanjungpinang saat ini mengalami reklamasi. Aktivitas reklamasi di pesisir akan memberikan dampak terhadap perubahan kondisi fisik pantai terutama akibat gelombang laut yang merupakan salah satu parameter hidro-oseanografi yang mempengaruhi perubahan wilayah pesisir dan pantai selain parameter arus dan pasang surut (Denestiyanto et al., 2015). Penelitian ini bertujuan untuk mengetahui gelombang laut yang terjadi di sekitar lokasi reklamasi Kota Tanjungpinang menggunakan model hidrodinamika. Metode penelitian yang digunakan metode survei. Data yang akan diukur di lapangan adalah batimetri dan angin. Data lain yang digunakan adalah data pasang surut yang diperoleh dari prediksi menggunakan MIKE 21 dan garis pantai. Alat selama penelitian terdiri dari alat survei dan analisis gelombang laut menggunakan software MIKE 21 dengan modul Spectral Wave (SW). Hasil model kondisi gelombang laut dari musim utara hingga musim barat di sekitar lokasi reklamasi Kota Tanjungpinang secara umum arah dan kondisi penjalaran gelombang sangat dipengaruhi oleh kondisi angin muson yang berganti setiap 3 (tiga) bulan sekali. Angin dominan berhembus dari arah utara dengan persentase kejadian angin musim secara umum cukup dominan, terutama pada kisaran 3,60-5,70 m/s. Sementara itu angin yang berpotensi membentuk gelombang laut adalah angin dari arah utara, selatan dan barat dengan rentang ketinggian gelombang setiap musim dominan berada di antara 0,1-1,5 m.Kata Kunci: Model Hydrodynamic, Gelombang, Kota Tanjung Pinang, AnginABSTRACTThe coastal of Tanjungpinang city currently experiencing reclamation. Reclamation activities on the coastal will have impact on changes in coastal physical conditions, especially due to ocean waves is one of the hydro-oceanographic parameters that affect changes to coastal areas in addition to currents and tidal parameters (Denestiyanto et al., 2015). This research aim to obtain information about ocean waves conditions arounds the coastsl reclamation site of Tanjungpinang city using hydrodynamic model. The research method used is the survey. The data used include is batimetri and wind. Other data used is prediction tidal using MIKE 21 and shoarline. The research equipment consists of equitment survey and analysis ocean wave using MIKE 21 software with the modul Spectral Wave (SW). The results of conditions model ocean waves from the north season to the west season around the coastal reclamation site of Tanjungpinang city, in general the direction and conditions of wave propagation are strongly influenced by monsoon wind conditions which change every 3 (three) months. The dominant wind blows from the north with the percentage of seasonal winds in general being quite dominant, especially in the range of 3,60-5,70 m/s. Meanwhile, winds that have the potential to form ocean waves are winds from the north, south and west with a range of wave heights per dominant season between 0,1-1,5 m.Keywords: Hydrodynamic Model, Ocean Wave, Tanjungpinang City, Wind
Ecological Index and Distribution Patterns of Seagrass in Banda Sea Tourism Park (TWP) Dwi Rosalina; Awaluddin Awaluddin; Khairul Jamil; Agus Surachmat; Katarrina Hesty Rombe; Anisa Aulia Sabilah
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.22119

Abstract

ABSTRACTSeagrass beds have an important role as the main source of primary productivity or organic matter producers, habitat for various biota, nursery grounds, spawning grounds, food sources for rare biota, and support for the diversity of marine biota species, as well as the economic value of seagrass ecosystem services. This study aims to determine the ecological index and distribution pattern of seagrass in the Banda Sea Aquatic Tourism Park (TWP). The method used is a line transect with a quadrant size of 50 cm x 50 cm that is placed perpendicular to the shoreline. The results showed that the seagrass diversity index at the study site consisted of 7 types of seagrass, namely Thalassia hemprichii, Enhalus acoroides, Cymodocea rotundata, Cymodocea serrulata, Halodule uninervis, Halophila ovalis, and Syringodium isoetifilium. The diversity index is categorized as moderate with a value of H' = 0.01-0.05, and a uniformity value of 0.71 has a high uniformity, which means that the number of individual species from one species to another is not much different from a stable environmental condition. The distribution pattern of seagrass with Id 1 is a grouped category. The physicochemical parameters obtained were in accordance with the growth of seagrass life.Keywords: Banda sea, Distribution pattern, Diversity, Dominance, Seagrass, Uniformity
Studi Kerapatan dan Tutupan Jenis Lamun di Perairan Pantai Ketapang, Kecamatan Sekotong Barat, Kabupaten Lombok Barat Muh Fahruddin; Anita Prihatini Ilyas
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.19240

Abstract

ABSTRAKLamun merupakan tumbuhan yang dipengaruhi oleh komposisi jenis substrat di daerah mangrove dan terumbu karang. Penelitian ini dilakukan untuk mengetahui kerapatan dan tutupan jenis lamun di perairan pantai Ketapang, Kecamatan Sekotong Barat, Kabupaten Lombok Barat. Penelitian ini menggunakan metode transek kuadrat yang berukuran 50x50 cm2 pada tiga lokasi yang berbeda. Stasiun 1 dekat habitat mangrove, stasiun 2 habitat lamun dan stasiun 3 dekat dengan terumbu karang. Hasil penelitian terdapat 4 jenis lamun yang ditemukan yaitu Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, dan Halophila ovalis. Kerapatan dan tutupan jenis lamun tertinggi ditunjukkan pada jenis Cymodocea rotundata pada stasiun 1 dan 2 sedangkan pada stasiun 3 jenis lamun yang memiliki kerapatan dan tutupan tertinggi adalah jenis Enhalus acoroides. Secara keseluruhan tutupan jenis lamun di perairan pantai Ketapang tergolong dalam kategori sedang. Kata Kunci: Kerapatan, Ketapang, Lamun, Sekotong, TutupanABSTRACTSeagrass is a plant that is influenced by the composition of the type of substrate in mangrove areas and coral reefs. This research was conducted to determine the density and cover of seagrass species in the coastal waters of Ketapang, West Sekotong District, and West Lombok Regency. This study used the quadratic transect method measuring 50x50 cm2 at three different locations. Station 1 is near the mangrove habitat, station 2 is the seagrass habitat, and station 3 is close to coral reefs. The results of the study found that 4 types of seagrass were found, namely Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, and Halophila ovalis. The highest density and cover of seagrass species were shown in Cymodocea rotundata at stations 1 and 2, while at station 3 the seagrass species that had the highest density and cover was Enhalus acoroides. Overall, the cover of seagrass species in the coastal waters of Ketapang is classified as medium. Keywords: Density, Ketapang, Seagrass, Sekotong, Cover
Distribusi Kelimpahan dan Pola Pertumbuhan Kepiting Bakau (Scylla spp.) di Kawasan Mangrove Golo Sepang, Nusa Tenggara Timur Siti Mira Rahayu; Patrisius Toma; Awaludin Syamsuddin; Iya Purnama Sari; Meuthia Aula Jabbar; Dadan Zulkifli; Aditya Bramana; Ratna Suharti
Jurnal Kelautan Vol 16, No 3: Desember (2023)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v16i3.23128

Abstract

ABSTRACTKepiting bakau (Scylla spp.) merupakan salah satu komoditas sumberdaya perikanan yang potensial untuk dikembangkan karena memiliki nilai ekonomis yang tinggi. Kawasan mangrove di Golo Sepang merupakan penghasil kepiting bakau terbesar di Kabupaten Manggarai Barat, Nusa Tenggara Timur. Penelitian ini dilakukan untuk menganalisis distribusi dan pola pertumbuhan kepiting bakau (Scylla spp.) di perairan Golo Sepang, Nusa Tenggara Timur. Sampel kepiting bakau diambil pada bulan Maret–Mei 2022 di lokasi yang biasa digunakan nelayan untuk menangkap kepiting bakau dengan menggunakan alat tangkap bubu lipat. Terdapat tiga spesies kepiting bakau dari total 870 individu yang diukur, yaitu S. serrata, S. paramamosain, dan S. olivicea. Sebaran kelimpahan kepiting bakau lebih banyak terdapat di area yang suhu dan salinitasnya lebih tinggi. Pertumbuhan kepiting bakau jenis S. serrata di lokasi penelitian memiliki pola isometrik sedangkan S. paramamosain dan S. olivacea memiliki pola alometrik positif. Pertumbuhan kepiting jantan lebih cepat dan lebih besar daripada pertumbuhan kepiting betina.Kata kunci: Distribusi, kepiting bakau, mangrove, pertumbuhan, salinitasABSTRACTMud crab (Scylla spp.) is one of the potential fishery commodities to be developed due to its high economic value. The mangrove area in Golo Sepang Waters is the largest producer of mangrove crabs in West Manggarai, East Nusa Tenggara. This study was conducted to analyze the distribution and growth pattern of mud crabs (Scylla spp.) in Golo Sepang, East Nusa Tenggara. Mud crab samples were captured in March – May 2022 at the sites regularly used by fishermen to catch the crabs using folded traps (bubu). A total of 870 measured samples consisting of three species of mud crabs: S. serrata, S. paramamosain, and S. olivicea. The distribution pattern of mud crabs at the study location as per salinity and temperature patterns. The growth of S. serrata at the study site had an isometric pattern while S. paramamosain and S. olivacea had a positive allometric pattern. The growth of male crabs is faster and bigger than the growth of female crabs.Keywords: Distribution, mud crab, mangrove, growth, salinity

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