Jurnal Kelautan: Indonesian Journal of Marine Science and Technology最新文献

{"title":"Proporsi Morfometrik dan Pola Pertumbuhan Kerang Darah (Anadara granosa) di Daerah Intertidal, Kota Tual","authors":"Rosita Silaban, Johny Dobo, Gresela Rahanabun","doi":"10.21107/jk.v15i2.13759","DOIUrl":"https://doi.org/10.21107/jk.v15i2.13759","url":null,"abstract":"Blood 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 (b>2.50) while the Fair waters blood clams had a b value of 2.01 and were classified as negative allometric (b<2, 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.","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74159741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Keragaman, Distribusi dan Kelimpahan Chaetognatha di Kawasan Pesisir Kota Dumai Provinsi Riau","authors":"Eko Prianto, Romie Jhonnerie, Yossi Oktorini, Adriman Adriman, Budijono Budijono","doi":"10.21107/jk.v15i2.13168","DOIUrl":"https://doi.org/10.21107/jk.v15i2.13168","url":null,"abstract":"Chaetognatha 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 m 3 , it is very low compare to other research.","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82669141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulasi Pemodelan Sebaran Suhu Akibat Limbah Air Panas Power Plant PT. Amman Mineral Nusa Tenggara di Teluk Benete, Sumbawa Barat","authors":"Rexcha Oktavania Sukmawanty, Kunarso Kunarso, Lilik Maslukah, Aris Ismanto","doi":"10.21107/jk.v15i2.13289","DOIUrl":"https://doi.org/10.21107/jk.v15i2.13289","url":null,"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 siste","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78178553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pemetaan Daerah Rawan Abrasi di Wilayah Pesisir Kota Tanjungpinang (Studi Kasus: Kelurahan Kampung Bugis dan Senggarang)","authors":"Yogi Zulkarnaen, Try Febrianto, Dony Apdillah","doi":"10.21107/jk.v15i2.11401","DOIUrl":"https://doi.org/10.21107/jk.v15i2.11401","url":null,"abstract":"","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73169162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distribusi Spasial Parameter Kualitas Air di Teluk Beno, Bali","authors":"Try Al Tanto, R. Prasetyo, Ilham Ilham","doi":"10.21107/jk.v15i2.13212","DOIUrl":"https://doi.org/10.21107/jk.v15i2.13212","url":null,"abstract":"","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72747173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pola Sebaran Nutrien Dan Kelimpahan Fitoplankton Di Perairan Pulau Pangkil Kecamatan Teluk Bintan Kabupaten Bintan","authors":"Novrianto Gunawan, Tri Apriadi, Wahyu Muzammil","doi":"10.21107/jk.v15i2.11391","DOIUrl":"https://doi.org/10.21107/jk.v15i2.11391","url":null,"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 phyt","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74902319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tingkat Kesuburan Perairan Desa Mantang Baru, Kecamatan Mantang, Kabupaten Bintan","authors":"Sulasteri Sulasteri, Tri Apriadi, W. R. Melani","doi":"10.21107/jk.v15i2.11389","DOIUrl":"https://doi.org/10.21107/jk.v15i2.11389","url":null,"abstract":"The village of Mantang Baru which is lcoastal area, located in the district of Mantang. The objective of this study was to analyze the trophic status of the Mantang Baru village, subdistrict of Mantang, Bintan regency. The reserch was conducted by survey method, sampel observation using random sampling at 15 sampling points. Analysis of trophic levelwas used the TRIX index. The results of supporting parameters namely physics, chemistry, and biology of he water have met the water quality standards based on PPRI no.22 years of 2021 attachment of 8 the expect NO 3 and PO 4. The results of the measurement of chlorophyll-a content in the waters of the village of mantang baru at high t ide was 0,094µg/L at low was 0,089µg/L, the resutls of water based on TRIX at high tide ranged from 5,16 mg/L at low tide ranged from 5,87mg/L. Based on category TRIX the waters of the village of Mantang Baru are classified as eutrophic waters.","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78088291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Comparison of Morphological Features Between Freshly Collected and Silica Beads-Dehydrated Macroalgal Samples in The Central Great Barrier Reef, Australia","authors":"W. Turupadang","doi":"10.21107/jk.v15i2.14374","DOIUrl":"https://doi.org/10.21107/jk.v15i2.14374","url":null,"abstract":"ABSTRACTAccurate and reliable identification of macroalgae has a crucial role in a range of research relating to the interaction and function of macroalgae in reef ecosystems. The dependency on identifying macroalgae on fresh samples places severe constraints on conducting this research leading to potential biases due to the selection of sites either close to shore or in the vicinity of fully equipped research stations. Therefore, this study aimed to determine if could reliably be used silica bead-dehydrated samples to identify genera characteristics that are only visible in sectioned material. Fresh macroalgal samples were collected at Nelly Bay, compared to Magnetic Island. Materials and sections were to previously collect macroalgal samples and sections dehydrated in silica beads while in the field and reconstituted in filtered seawater for identification. Each sample was identified using histological sections supported with visual tools (photograph, herbaria). In this study, macroalgal identified samples from all species to genus with characteristic features recognizable within both fresh and reconstituted samples. No artifacts were present in reconstituted macroalgal samples compared to freshly collected samples. Therefore, it is suggested that using silica beads as a preservation field method for collecting and identifying macroalgal samples is a suitable and accurate alternative method to the use of fresh samples, which eliminates the time and distance constraints associated with fresh samples.Keywords: Great Barrier Reef, Histological sectioning, Macroalgae identification, Silica-beads preservation, Reconstituted","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88851537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development Strategy Of Coastal Village Based On Marine Tourism Potential In Munjungagung Village, Tegal Regency, Central Java Province","authors":"Beni Sabdo Nugroho, F. Purwanti, P. W. Purnomo, Atrasina Adlina","doi":"10.21107/jk.v15i2.13812","DOIUrl":"https://doi.org/10.21107/jk.v15i2.13812","url":null,"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","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79649817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Karakteristik Spasial Suhu Permukaan Laut Perairan Kota Tanjungpinang pada Empat Musim Berbeda","authors":"A. Ramadani, Mario Putra Suhana, Try Febrianto","doi":"10.21107/jk.v15i1.10832","DOIUrl":"https://doi.org/10.21107/jk.v15i1.10832","url":null,"abstract":"","PeriodicalId":17689,"journal":{"name":"Jurnal Kelautan: Indonesian Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80175739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}