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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 340 Documents
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Tingkat Kelulusan Hidup Propagul Rhizophora sp. Di Area Restorasi Mangrove Pada Kawasan Pesisir Tanjung Pisau Dan Tanah Merah, Kabupaten Bintan Evan Roy Herdiwan; Febrianti Lestari; Khairul Hafsar
Jurnal Kelautan Vol 15, No 1: April (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i1.11397

Abstract

ABSTRACTThis research is based on the importance of the role of mangroves to the needs of coastal ecosystems, because they have high economic and ecological value. The main problem in the mangrove ecosystem is the occurrence of logging and degradation for several purposes and purposes. Therefore, it is necessary to understand and understand the importance of rehabilitation and restoration, especially for the Bintan Regency area. So far, the restoration that has been carried out is using the seedling method. Mangrove Restoration Activities in the Tanah Merah and Tanjung Pisau areas, Bintan Regency using Rhizophora sp. The purpose of the study was to determine the survival rate and the level of community awareness of mangrove restoration activities in the coastal areas of Tanjung Pisau and Tanah Merah, Bintan Regency. This research uses purposive sampling method. Determination of sampling points in accordance with the points selected in government programs that have been carried out by taking into account the ability to represent each region. Monitoring is carried out using plots where in 1 plot there will be 33 mangroves planted with a 3x1 pattern, and 10 plots will be monitored for each area. The results showed that the survival rate for each region was Tanah Merah 58% and Tanjung Pisau 85% which were quite successful. While the level of public awareness is also quite good with a percentage of 73.4%.Keywords: Awareness, Mangrove, Restoration, Bintan IslandABSTRAKPenelitian ini didasari oleh pentingnya peranan mangrove terhadap kebutuhan ekosistem pesisir, karena memiliki nilai ekonomis dan ekologis yang tinggi. Permasalahan utama pada ekosistem mangrove adalah terjadinya penebangan dan degradasi untuk beberapa kepentingan dan peruntukan. Maka dari itu, perlunya memahami dan mengerti akan pentingnya rehabilitasi dan restorasi terutama untuk kawasan daerah Kabupaten Bintan. Selama ini restorasi yang telah dilakukan menggunakan cara pembibitan(penyemaian). Kegiatan Restorasi Mangrove pada wilayah Tanah Merah dan Tanjung Pisau, Kabupaten Bintan menggunakan cara pembenihan propagul Rhizophoran sp. Tujuan penelitian adalah untuk mengetahui tingkat kelulusan hidup dan tingkat kepedulian (awareness) masyarakat terhadap kegiatan Restorasi mangrove pada kawasan pesisir Tanjung Pisau dan Tanah Merah, Kabupaten Bintan. Penelitian ini menggunakan metode Purposive Sampling. Penentuan titik sampling sesuai dengan titik yang dipilih dalam program pemerintah yang sudah dilakukan dengan memperhatikan kecakupan mewakili setiap daerahnya. Pemantauan dilakukan dengan menggunakan plot dimana dalam 1 plot akan didapati 33 mangrove yang ditanam dengan pola 3x1, dan akan dipantau 10 plot untuk masing-masing wilayah. Hasil penelitian menunjukkan tingkat kelulusan hidup masing-masing daerah adalah Tanah Merah 58% dan Tanjung Pisau 85% yang tergolong cukup berhasil. Sedangkan tingkat kepedulian masyarakat juga tergolong baik dengan mencapai persentase 73,4%. Kata kunci: Kepedulian , Mangrove, Restorasi, Pulau Bintan
Development Strategy Of Coastal Village Based On Marine Tourism Potential In Munjungagung Village, Tegal Regency, Central Java Province Beni Sabdo Nugroho; Frida Purwanti; Pujiono Wahyu Purnomo; Atrasina Adlina
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.13812

Abstract

ABSTRACTOne of the coastal resource that has considerable potential but has not been appropriately managed is marine ecotourism resources. Munjungagung Village has beautiful beaches and is never empty of visitors during holidays. There is also a Fishing and Diving Spot. It can be a potential for marine ecotourism and has an excellent opportunity to develop into mainstay tourism. It is hoped that it can improve the community welfare. This research aimed to study the Coastal Village's plan, which was developed based on the potential for marine tourism in Munjungagung Village. This research used the descriptive method and was conducted from April to November 2021 to determine the potential for marine tourism, psychographics of tourists, the carrying capacity of the area, and a strategic development plan. The data were analyzed using Tourism Suitability Index (TSI), Regional Carrying Capacity, and SWOT. It showed that the tourist sites were still suitable for beach tourism activities, snorkeling, and diving. The TSI of this site is 94.05% which is interpreted as very suitable. The site also fulfills the carrying capacity of tourism, except during the peak holiday season. Based on the calculation, this site can accommodate 300 people per day, and 8 people for snorkeling and diving in an area of 5.0 ha. Keywords: Marine Ecotourism, Regional Suitability, Carrying Capacity, Larangan Beach
Pola Sebaran Nutrien Dan Kelimpahan Fitoplankton Di Perairan Pulau Pangkil Kecamatan Teluk Bintan Kabupaten Bintan Novrianto Gunawan; Tri Apriadi; Wahyu Muzammil
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.11391

Abstract

ABSTRAK.Pulau Pangkil merupakan kawasan pesisir yang masih memanfaatkan potensi ekosistem perairan sebagai sumber ekonomi masyarakat. Nelayan di daerah Pulau Pangkil berpenghasilan dari perikanan tangkap dan kegiatan perikanan budidaya ikan. Hal ini mengakibatkan aktivitas di perairan tersebut tinggi, salah satunya adalah sebagai tempat penangkapan ikan, tambat perahu nelayan, dan keramba jaring apung. Banyaknya aktivitas di daerah tersebut dapat menggangu keseimbangan ekosistem di perairan yang berdampak pada perubahan-perubahan fisika, kimia maupun biologi. Penelitian ini bertujuan untuk mengetahui jenis, kelimpahan fitoplankton, konsentrasi nutrien (nitrat dan fosfat), pola sebaran nutrien (nitrat dan fosfat), pola sebaran kelimpahan fitoplankton di perairan Pulau Pangkil. Pengambilan sampel penelitian ini menggunakan metode simple random sampling sebanyak 15 titik di saat pasang dan 15 titik di saat pasang. Parameter yang dianalisis meliputi parameter fisika (suhu, kecerahan, kekeruhan, kecepatan arus, dan pasang surut), parameter kimia (DO, salinitas, pH, nitrat, dan fosfat) dan parameter biologi yaitu fitoplankton. Hasil pengukuran nitrat, fosfat, dan kelimpahan fitoplankton diolah menjadi peta kontur sebaran menggunakan software Surfer 11. Hasil penelitian didapatkan konsetrasi rata-rata nitrat dan fosfat di perairan Pulau Pangkil saat pasang yaitu 1,73 mg/l untuk nirat dan fosfat yaitu 0,08 mg/l pada saat pasang. Nilai rata-rata nitrat dan fosfat di perairan Pulau Pangkil saat surut yaitu 1,98 mg/l untuk nirat dan fosfat yaitu 0,05 mg/l pada saat surut.  Nilai rata-rata dan pola sebaran kelimpahan fitoplankton berdasarkan pasang surut perairan di Pulau Pangkil yaitu pada saat pasang kelimpahan tinggi dibandingkan surut yaitu dengan nilai 905,6 sel/l dan pada saat surut dengan nilai 802,4 sel/l.Kata kunci : fitoplankton, fosfat,  nitrat, nutrien, Pulau pangkilABSTRACT.Pangkil Island is a coastal area that still utilizes the potential of aquatic ecosystems as a source of community economics. Fishermen in the Pangkil Island area earn from capture fisheries and fish farming activities. This results in high activity in these waters, one of which is as a fishing ground, mooring fishing boats, and floating net cages. The number of activities in the area can disrupt the balance of the ecosystem in the waters which has an impact on physical, chemical and biological changes. This study aims to determine the type and abundance of phytoplankton, concentration of nutrients (nitrate and phosphate), distribution pattern of nutrients (nitrate and phosphate), distribution pattern of abundance of phytoplankton in Pangkil Island Waters. Sampling in this study used a simple random sampling method with 15 sampling sites at high and low tide. The parameters analyzed included physical parameters (temperature, brightness, turbidity, current velocity, and tides), chemical parameters (DO, salinity, pH, nitrate, and phosphate) and biological parameters, namely phytoplankton. The results of measurements of nitrate, phosphate, and abundance of phytoplankton were processed into distribution contour maps using Surfer 11 software. The results showed that the average concentration of nitrate and phosphate in the waters of Pangkil Island at high tide was 1.73 mg/l for nitrate and phosphate, which was 0.08 mg/L at tide. The average value of nitrate and phosphate in the waters of Pangkil Island at low tide is 1.98 mg/l for nitrate and phosphate, which is 0.05 mg/l at low tide. The average value and distribution pattern of phytoplankton abundance based on tidal waters on Pangkil Island is at high tide compared to low tide with a value of 905.6 cells/l and at low tide a value of 802.4 cells/l.Keywords: nitrate, nutrient, Pangkil Island, phytoplankton, phosphate.
Pemanfaatan Ekstrak Rumput Laut (Eucheuma cottonii) Dari Perairan Sumenep Sebagai Antioksidan Tartila Syafitri; Hafiludin Hafiludin; Adyos Bobby Chandra
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.14905

Abstract

ABSTRACTSeaweed is a plant that has the potential to be cultivated and has many benefits, one of which is as a natural antioxidant because it contains bioactive compounds that function to ward off free radicals. One of the seaweeds that has the potential to be developed is Eucheuma cottonii.  This study aimed to analyze the proximate content, bioactive content and antioxidant activity of Eucheuma cottonii seaweed.  This research was carried out in several stages, namely: seaweed preparation, proximate analysis, phytochemical analysis, and antioxidant activity tests carried out at the Marine Biotechnology Laboratory, Trunojoyo University Madura.  The proximate content of Eucheuma cottonii seaweed is rich in water content in fresh form and rich in ash content in dry form, while the total fat content and protein content are very low.  Bioactive compounds in Eucheuma cottonii seaweed are alkaloids, flavonoids, triterpenoids, and saponins.  Eucheuma cottonii seaweed has the best antioxidant activity with methanol as a solvent with an IC50 of 757.05 ppm.  The results of this study indicate that Eucheuma cottonii seaweed has the potential to be developed in the functional food sector.Keywords: antioxidant, bioactive, Eucheuma cottonii, proximate.ABSTRAKRumput laut merupakan salah satu tanaman tingkat rendah yang berpotensi untuk dibudidayakan dan mengandung senyawa bioaktif dengan aktivitas antioksidan alami untuk menangkal radikal bebas. Salah satu jenis rumput laut yang berpotensi dikembangkan yaitu Eucheuma cottonii. Penelitian ini bertujuan untuk menganalisis kandungan proksimat, kandungan bioaktif dan aktivitas antioksidan dari rumput laut E. cottonii. Penelitian ini dilakukan dalam beberapa tahap yaitu: preparasi rumput laut, analisis proksimat, analisis fitokimia, dan uji aktivitas antioksidan yang dilaksanakan di Laboratorium Bioteknologi Laut, Universitas Trunojoyo Madura. Hasil penelitian menunjukkan bahwa kandungan proksimat dari rumput laut E. cottonii kaya akan kadar air dalam bentuk segar dan kaya akan kadar karbohidrat dalam bentuk kering. Senyawa bioaktif yang terdeteksi dalam rumput laut E. cottonii yaitu alkaloid, flavonoid, triterpenoid, dan saponin. Rumput laut E. ottonii  mempunyai aktivitas antioksidan terbaik dengan pelarut metanol dengan IC50 sebesar 757,05 ppm. Hasil penelitian ini menunjukkan bahwa rumput laut Eucheuma cottonii mempunyai potensi untuk dikembangkan dalam bidang pangan fungsional.Kata Kunci: antioksidan, bioaktif, Eucheuma cottonii, proksimat.
Pemetaan Daerah Rawan Abrasi di Wilayah Pesisir Kota Tanjungpinang (Studi Kasus: Kelurahan Kampung Bugis dan Senggarang) Yogi Zulkarnaen; Try Febrianto; Dony Apdillah
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.11401

Abstract

ABSTRAKPenelitian ini bertujuan untuk memetakan daerah rawan abrasi pantai diwilayah pesisir Kelurahan Kampung Bugis dan Senggarang, Kota Tanjungpinang. Pengumpulan data dilakukan sejak Desember 2020 samapi April 2021. Data diperoleh dari survei lapangan pengamatan dan interpretasi penginderaaan jauh. Analisis overlay menggunakan metode model builder dengan bantuan perangkat lunak ArcGIS digunakan dalam penentuan kelas kerawanan abrasi. Hasil dari penelitian menunjukan bahwa tingkat kerawanan abrasi di Kelurahan Kampung Bugis dan Senggarang dikategorikan dalam kelas kerawanan sedang dan rendah. Luas daerah dengan katergori kerawanan rendah mencapai 79.29 Ha, sedangkan kategori rawan sedang seluas 147.59 Ha. Kelurahan Kampung Bugis memiliki daerah rawan abrasi pantai sedang mencapai 54,92 Ha, dan rendah mencapai 47,8 Ha, sementara itu Kelurahan Senggarang memiliki daerah rawan abrasi sedang mencapai 92,67 Ha dan kerawanan rendah mencapai 31,49 Ha.Kata kunci: Pemetaan, Kerawanan abrasi pantai, SIG, Kota TanjungpinangABSTRACTThis study aims to mapping of abrasion vulnerability areas in the coastal of Kampung Bugis and Senggarang Villages, Tanjungpinang City. Data collection was carried out from December 2020 to April 2021. Data were obtained from field surveys of observations and interpretation of remote sensing. Overlay analysis using the model builder method by ArcGIS software is used to determine the abrasion susceptibility class. The results of the study indicate that the level of vulnerability to abrasion in the Villages of Kampung Bugis and Senggarang is categorized into medium and low vulnerability classes. The area in the low vulnerability category is 79.29 Ha, while the medium vulnerability category is 147.59 Ha. Kampung Bugis Village has a moderate abrasion vulnerability area of 54.92 Ha, and a low area of 47.8 Ha, meanwhile Senggarang Village has a moderate abrasion vulberability area of 92.67 Ha and a low vulnerability of 31.49 Ha.Keywords: Mapping, Abration vulnerability, GIS, Tanjungpinang city
Distribusi Spasial Parameter Kualitas Air di Teluk Beno, Bali Try Al Tanto; Rahmadi Prasetyo; Ilham Ilham
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.13212

Abstract

ABSTRACTBy overviewing environmental issues and the pros/cons of the revitalization planning of the Benoa Bay, a study encompasing various problems is crucial to be carried out. One of which is related to the water quality. This study aims to spatially map the quality of seawater based on the values obtained from secondary data. Benoa Bay water quality conditions in 2016, has a water transparency ranging from 1.5-6 m, DO (not detected), the average of BOD was 47.49 mg/l, nitrate (0.2-0.3 mg/l), ammonia (0-0.33 mg/l), phenol (average 2.42 mg/l), and coliform (0-1100 MPN/100 ml). These values are alarming whereby it exceeds the quality standard allowed for marine biota. On the other hand, sea temperature ranged from 28.50 to 30.50°C, the average of pH was 8.27, salinity (31.6-32.8 ‰), sulfide (not detected), CN (not detected), oil fat (0-0.2 mg/l), and the average of TSS was 3.27 mg/l. These parameter concentrations are still suitable for supporting marine biota within Benoa Bay. Generally, the condition of water quality in Benoa Bay was categorized as polluted through the input of excess nutrients and bacteria.  Keywords: sea water quality, physics, chemical, excess nutrient, biology, Benoa Bay, BaliABSTRAKMelihat permasalahan lingkungan yang terjadi, serta banyaknya pro dan kontra perencanaan revitalisasi Teluk Benoa, sebuah kajian untuk menjawab berbagai persoalan yang terjadi sangat perlu untuk dilakukan. Salah satu permasalahan tersebut berkaitan dengan kondisi kualitas perairan. Tujuan kajian ini adalah untuk memetakan kualitas air laut secara spasial berdasarkan nilai-nilai yang didapatkan dari data sekunder. Kondisi kualitas perairan Teluk Benoa pada tahun 2016, memiliki kecerahan perairan berkisar antara 1,5-6 m, DO (tidak terdeteksi), rata-rata nilai BOD sebesar 47,49 mg/l, nitrat (0,2-0,3 mg/l), amoniak (0-0,33 mg/l), phenol (rataan 2,42 mg/l), dan coliform (0-1100 MPN/100 ml). Konsentrasi parameter kaulitas air tersebut cukup mengkhawatirkan karena sudah melampaui rentang baku mutu air laut yang diperbolehkan untuk kehidupan biota laut. Disisi lain, parameter suhu berkisar antara 28,50-30,50°C, rata-rata nilai pH sebesar 8,27, salinitas (31,6-32,8 ‰), sulfida (tidak terdeteksi), CN (tidak terdeteksi), minyak lemak (0-0,2 mg/l), dan rata-rata TSS sebesar 3,27 mg/l), masih aman untuk kehidupan biota di sekitar perairan Teluk Benoa. Secara umum, kondisi kualitas perairan di Teluk Benoa termasuk dalam kategori tercemar melalui masukan nutrien berlebih dan bakteri.Kata kunci: kualitas air laut, fisika, kimia, nutrien berlebih, biologi, Teluk Benoa, Bali
Keragaman, Distribusi dan Kelimpahan Chaetognatha di Kawasan Pesisir Kota Dumai Provinsi Riau Eko Prianto; Romie Jhonnerie; Yossi Oktorini; Adriman Adriman; Budijono Budijono
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.13168

Abstract

ABSTRAKChaetognatha atau cacing panah (arrow worm) merupakan salah satu kelompok holoplankton yang distribusi dan keragamannya cukup tinggi di perairan. Chaetognatha memiliki peran yang sangat penting didalam rantai makanan dan juga berfungsi sebagai bioindikator kondisi oceanograf suatu wilayah. Kelimpahan Chaetognatha di dalam perairan dapat mempengaruhi kelimpahan larva ikan dan zooplankton lainnya, sehingga informasi keberadaannya sangat penting dalam pengelolaan perikanan. Penelitian ini bertujuan untuk mengetahui keragaman, distribusi dan kelimpahan Chaetognatha di perairan pesisir Kota Dumai Provinsi Riau. Penelitian ini dilaksanakan pada bulan April hingga September 2021 di perairan pesisir Kota Dumai. Jumlah stasiun pengambilan sampel sebanyak tiga titik dengan jumlah pengambilan sampel sebanyak dua kali pada masing-masing stasiun. Jumlah jenis Chaetognatha di perairan pesisir Kota Dumai tergolong rendah hanya ditemukan 2 jenis yaitu Eukronia calliops dan Sagitta megalopthalmus. Distribusi Chaetognatha di perairan Kota Dumai cukup merata dan ditemukan di ketiga lokasi penelitian walaupun kelimpahan yang relatif berbeda. Kelimpahan Chaetognatha berkisar antara 19-322 ind/1000 m3, namun jika dibandingkan dengan perairan lainnya, kelimpahan dilokasi studi sangat rendah.Kata kunci: Chaetognatha, keragaman, Kota Dumai, perairan pesisirABSTRACTChaetognatha or arrow worms are one of the holoplankton groups whose distribution and diversity is quite high in waters. Chaetognatha has important role in the food chain and also functions as a bioindicator of oceanographic conditions. The abundance of Chaetognatha in the waters can affect the abundance of fish larvae and other zooplankton, so that information on its existence is very important in fisheries management. The aims of study to determine the diversity, distribution and abundance of Chaetognatha in the coastal waters of Dumai City, Riau Province. This research was conducted from April to September 2021 in the coastal waters of Dumai City. The number of sampling stations are three points and the number of samplings twice at each station. The number of Chaetognatha species in the coastal waters of Dumai City is relatively low, only 2 species were found, namely Eukronia calliops and Sagitta megalopthalmus. The distribution of Chaetognatha in the waters of Dumai City was quite even and found in three sites, although the abundances were relatively different. The abundance of Chaetognatha ranges from 19-322 ind/1000 m3, it is very low compare to other research.Key word: Chaetognath, coastal waters, diversity, Dumai City
Simulasi Pemodelan Sebaran Suhu Akibat Limbah Air Panas Power Plant PT. Amman Mineral Nusa Tenggara di Teluk Benete, Sumbawa Barat Rexcha Oktavania Sukmawanty; Kunarso Kunarso; Lilik Maslukah; Aris Ismanto
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.13289

Abstract

ABSTRACTPower Plant PT. Amman Mineral Nusa Tenggara is a thermal power station (PLTU) that supplies electricity located in West Sumbawa Regency. The power plant utilizes seawater from Benete Bay as cooling water for the condenser, which produces hot water waste (heat) that released back into the water. The hot water waste that generated must pass the cooling stage so the temperature of the hot water waste can close to the normal temperature of the water. The objective of this research is to determine the temperature distribution due to hot water waste released by the power plant and predict the temperature distribution in the event of a cooling system failure. To carry out the study used several data include temperature, currents, bathymetry, tides, and the discharge of heat water. The research method used is advection-dispersion hydrodynamic modeling by Delft3D software. The results of hydrodynamic modelling showed that the distribution of hot water waste in normal conditions and in the cooling system where there is a damage, are leading to the east and west according to the direction of tidal current. Result of measurement to the water around the outlet shows the average temperature in the water coloumn is 28,5oC. The temperature increase due to hot water waste reaches 2,5oC in normal conditions, and 3,5oC in conditions if there is damage to the cooling system. In normal conditions, the dispersion area of hot water waste is 25,39 Ha during spring tide, and 9,31 Ha during neap tide. In the damaged condition of cooling system, the dispersion area during spring tide is 41,95 Ha and 35,61 Ha during neap tide.Keywords: Distribution, Waste Heat, Temperature, Delft3DABSTRAKPower Plant PT. Amman Mineral Nusa Tenggara yang terletak di Kabupaten Sumbawa Barat merupakan PLTU yang mensuplai kebutuhan listrik untuk operasional perusahaan. Power plant memanfaatkan air laut dari Teluk Benete sebagai media pendingin untuk kondensor yang hasil akhirnya berupa limbah air panas (bahang) yang dikeluarkan kembali ke perairan. Limbah air panas yang akan dikeluarkan harus melewati tahap pendinginan sehingga suhu limbah air panas dapat mendekati suhu normal perairan. Penelitian ini bertujuan untuk mengetahui sebaran suhu akibat limbah air panas yang dikeluarkan oleh power plant dan memprediksi sebaran suhu apabila terjadi kerusakan sistem pendingin. Data primer yang digunakan dalam penelitian ini adalah data temperatur dan arus laut. Sedangkan data sekunder yang digunakan adalah data batimetri, pasang surut, dan debit limbah air bahang. Metode yang digunakan dalam penelitian ini adalah pemodelan hidrodinamika adveksi-dispersi dengan software Delft3D. Hasil penelitian menunjukkan sebaran limbah air panas pada kondisi normal maupun apabila terjadi kerusakan sistem pendingin mengarah ke arah timur dan barat, sesuai dengan arah pergerakan arus. Kenaikan suhu akibat limbah air bahang mencapai 2,5oC pada kondisi normal, dan 3,5oC pada kondisi apabila terjadi kerusakan sistem pendingin dari suhu rata- rata perairan sebesar 28,5 oC. Pada kondisi normal, luas sebaran pada saat pasang purnama sebesar 25,39 Ha dan pada saat pasang perbani sebesar 9,31 Ha, sedangkan pada kondisi apabila terjadi kerusakan sistem pendingin luas sebaran limbah saat pasang purnama sebesar 41,95 Ha dan ketika pasang perbani sebesar 35,61 Ha.Kata Kunci: Sebaran, Limbah Air Panas, Temperatur, Delft3D
Proporsi Morfometrik dan Pola Pertumbuhan Kerang Darah (Anadara granosa) di Daerah Intertidal, Kota Tual Rosita Silaban; Johny Dobo; Gresela Rahanabun
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.13759

Abstract

ABSTRACTBlood clams are one type of shellfish group that has high economic value. Its existence has long been exploited by the community to be sold or used for daily life. This study aims to analyze the size distribution, growth pattern and condition factors of blood clams caught in the waters of Taar and Fair, Tual City. Samples were taken using the belt transect method. The samples were then measured for the length, width and height of the shells as well as the total weight. Blood clams obtained in Taar waters were larger and heavier than blood clams from Fair waters and were dominated by shell length class 2.57-2.85 cm. The growth pattern based on the length-weight relationship was obtained by the Taar blood clams having a b value of 3.04 and classified as positive allometric (b2.50) while the Fair waters blood clams had a b value of 2.01 and were classified as negative allometric (b2, 50). The condition factor of Taar waters obtained an average value of 0.98 and Fair waters of 1.66, indicating that the environmental conditions of the two locations were quite good for the survival of blood clams.Keywords: morphometric, growth, blood clamABSTRAK Kerang darah merupakan salah satu jenis dari kelompok kekerangan yang bernilai ekonomis tinggi. Keberadaannya sejak lama telah dieksploitasi oleh masyarakat untuk dijual maupun dipakai untuk kehidupan sehari-hari. Penelitian ini bertujuan untuk menganalisis distribusi ukuran, pola pertumbuhan dan faktor kondisi kerang darah yang ditangkap di perairan Taar dan Fair, Kota Tual. Sampel diambil dengan menggunakan metode belt transect. Sampel kemudian diukur panjang, lebar dan tinggi cangkang serta berat total. Kerang darah yang diperoleh pada perairan Taar berukuran lebih besar dan berat dibandingkan kerang darah dari perairan Fair serta didominasi oleh kelas ukuran panjang cangkang 2,57-2,85 cm. Pola pertumbuhan berdasarkan hubungan panjang berat diperoleh kerang darah perairan Taar memiliki nilai b sebesar 3,04 dan tergolong allometrik positif (b2,50) sedangkan kerang darah perairan Fair memiliki nilai b sebesar 2,01 dan tergolong allometrik negatif (b2,50). Faktor kondisi perairan Taar diperoleh nilai rata-rata sebesar 0,98 dan perairan Fair sebesar 1,66 sehingga menunjukan kondisi lingkungan kedua lokasi cukup baik bagi kelangsungan hidup kerang darah.Kata kunci: morfometrik, pertumbuhan, kerang darah
Zooplankton di Perairan Teluk Doreri, Kabupaten Manokwari, Provinsi Papua Barat Alfret Roni Marani; Alianto Alianto; Vera Sabariah; Marhan Manaf; Tresia Sonya Tururaja; Safar Dody
Jurnal Kelautan Vol 15, No 2: Agustus (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i2.14134

Abstract

ABSTRACTThis study aims to determine the abundance and composition of zooplankton in the waters of Doreri Bay. Water samples were taken at a depth of 5 meters and 10 meters at 2 research stations. Identification of zooplankton was carried out using the sweep method. The results obtained that the average abundance of zooplankton at station 1 at a depth of 5 and 10 meters respectively was 54 ind/L in the morning and 33 ind/L in the afternoon and 33 ind/L in the morning and 30 ind/L in the afternoon. On the other hand, the average abundance of zooplankton at station 2 at a depth of 5 meters and 10 meters consecutively was 61 ind/L in the morning and 67 ind/L in the afternoon and 81 ind/L in the morning and 66 ind/L in the afternoon. The number of zooplankton genera is 29 genera with a percentage of 32.41% in 1 genera (Nauplius sp.), 20.99% in 1 genera (Calanus sp.), 5-9% in 2 genera (Epiplocylis sp., and Euntintinnus sp.), 3-.5% in 3 genera (Arcelia sp., Rhabdonella sp., and Salpingella sp.), and 0-3% in 22 genera (Abarenicola sp., Amphorellopsis sp., Ascomorpha sp., Balanus sp., Codonellopsis sp., Cornutella sp., Cyphoderia sp., Evadne sp., Lecane sp.,  Lithotrobus sp., Notholca sp., Oikopleura sp., Paravafella sp., Penaeus sp., Pinctada sp., Pleuraspis sp., Protorhabdonella sp., Spiophanes sp., Tintinnidium sp., Tintinnopsis sp.,Trichocerca sp., and Undella sp.). Keywords: Abundance, compositon, zooplankton, Doreri Bay Penelitian ini bertujuan untuk mengetahui kelimpahan dan komposisi zooplankton di perairan Teluk Doreri. Sampel air diambil pada kdalaman 5 meter dan 10 meter pada 2 stasiun penelitian. Identifikasi zooplankton dilakukan dengan menggunakan metode penyapuan. Hasil yang diperoleh rata-rata kelimpahan zooplankton di stasiun 1 pada kedalaman 5 dan 10 meter secara berturut-turut sebesar 54 ind/L pada pagi hari dan 33 ind/L di sore hari serta 33 ind/L di pagi hari dan 30  ind/L di sore hari. Rata-rata kelimpahan zooplankton di stasiun 2 pada kedalaman 5 meter dan 10 meter secara berturut-turut sebesar 61 ind/L di pagi hari dan 67 ind/L di sore hari serta 81 ind/L di pagi hari dan 66 ind/L di sore hari. Jumlah genera zooplankton adalah 29 genera dengan persentase 32,41% sebanyak 1 genera (Nauplius sp.),  20,99% sebanyak 1 genera (Calanus sp.), 5-9% sebanyak 2 genera (Epiplocylis sp., dan Euntintinnus sp.),  3-5% sebanyak 3 genera (Arcelia sp., Rhabdonella sp., dan Salpingella sp.), dan 0-3% sebanyak 22 genera (Abarenicola sp., Amphorellopsis sp., Ascomorpha sp., Balanus sp., Codonellopsis sp., Cornutella sp., Cyphoderia sp., Evadne sp., Lecane sp.,  Lithotrobus sp., Notholca sp., Oikopleura sp., Paravafella sp., Penaeus sp., Pinctada sp., Pleuraspis sp., Protorhabdonella sp., Spiophanes sp., Tintinnidium sp., Tintinnopsis sp.,Trichocerca sp., dan Undella sp.).Kata kunci: Kelimpahan, komposisi, zooplankton, Teluk Doreri

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