AQUATIC SCIENCE & MANAGEMENT最新文献

{"title":"Bioactive compounds in the algae of Kappaphycus alvarezii from Belang waters, Southeast Minahasa Regency","authors":"Dias Asthisa, D. Mantiri, D. Sumilat, R. Rompas, Annita Ch. Sinjal, R. Mantiri","doi":"10.35800/jasm.v9i2.35199","DOIUrl":"https://doi.org/10.35800/jasm.v9i2.35199","url":null,"abstract":"Algae Kappaphycus alvarezii is one of the leading commodities from fisheries and marine sectors in Indonesia. This algae species has many benefits in the fields of marine biology, chemistry, pharmacy, and pharmacology, as well as an excellent nutritional content for health. It is cultivated in the coastal waters of Minahasan Peninsula, especially in Buku Village, Belang District, Southeast Minahasa Regency. This study was carried out to analyze bioactive compound in the algae. Samples of 2-weeks old were taken directly from the cultivation area. Screening test was done qualitatively while an advanced test was done using LC-HRMS method. The results showed 4 bioactive compounds detected in the sample, they are alkaloids, tannins/phenolics, saponins, and flavonoids. From the advanced test, it was found 10 major compounds in the sample, i.e. (2-ethylhexyl) phthalate, phthalic acid, D-(+)-proline, maraniol, stigmatellin Y, Pentyl isopentyl phthalate, methyl thiofentanyl, phenylethanolamine, acetyl hexamethyl tetralin, and fucoxanthin.Indonesian title: Senyawa bioaktif pada alga Kappaphycus alvarezii dari perairan Belang, Kabupaten Minahasa Tenggara","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"278 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115985439","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":"Analysis of aquifers, humidity levels with geoelectric resistivity value, and NDW Index in the geothermal area of North Langowan","authors":"Bella M. Wowor, F. J. Manoppo, Herawaty Riogilang","doi":"10.35800/jasm.v9i2.35523","DOIUrl":"https://doi.org/10.35800/jasm.v9i2.35523","url":null,"abstract":"This research was conducted to examine the condition (location, depth, and thickness) of the aquifer, to assess the humidity level using the NDW index, and to determine the relationship between aquifer conditions and the sustainability of the geothermal system using the geoelectrical method of resistivity in the North Langowan geothermal area. The comparison between rock layer resistivity data and spectral values based on geological-hydrogeological maps was carried out to determine the relationship between aquifer conditions and humidity levels in the geothermal area to the continuity of the geothermal system in the Tompaso region. The data was processed using IP2WIN and ILWIS programs. The results showed that at the research site there were semi-confined aquifers and free aquifers, which were indicated by low resistivity values. It can be concluded that the aquifer in the North Langowan geothermal area was at a depth ranging from 0 m to 16 m with a thickness ranging from 3.98 to 12 m, moderate wetness, and has a good relationship in supporting the continuity of the Tompaso geothermal system.Indonesian title: Analisis akuifer, tingkat kelembaban dengan nilai resistivitas geolistrik, dan Index NDW di daerah panas bumi Langowan Utara","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134575359","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":"Anatomical characteristics of macroalgal species from Bombuyanoi Island, East Bolaang Mongondow Regency, North Sulawesi","authors":"Frian Patra, R. C. Kepel, L. Lumingas, G. Gerung, Khristin I. F. Kondoy, D. Sumilat, S. Undap","doi":"10.35800/jasm.v9i2.35229","DOIUrl":"https://doi.org/10.35800/jasm.v9i2.35229","url":null,"abstract":"This research aims to study the anatomical structure of macroalgae. Sample of macroalga was collected by using Line Intercept Transect (LIT) method with sampling quadrat. Macroalgae samples were dried and separated from the roots, stems, leaves and receptacles (if present). Samples were cut transversely and longitudinally at each section and observed under binoculared microscope of Olympus CX with monitor. Based on the histology, anatomical structure of macroalgae species can be divided into two tissues from outside to inside, namely cortex and medullary cells. The cortex is composed of one layer or more. The cortex is the area between the epidermis and the central column. The medulla cells only have one layer which is the largest layer. Based on the observation result of cells type from observed spesies Eucheuma denticilatum, Gracilaria arcuata, Hydropuntia edulis, G. salicornia, Hypnea valentiae, Turbinaria deccurens, and T. ornata, it shows that cells of medulla become small toward cortex.Indonesian title:  Karakteristik anatomi jenis makroalga dari Pulau Bombuyanoi, Kabupaten Bolaang Mongondow Timur, Sulawesi Utara","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126599173","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":"Analysis of leading commodities from capture fisheries resources at Bitung Oceanic Fishing Port, North Sulawesi","authors":"A. Kusumaningrum, L. Lumingas, D. Sumilat, Johnny Budiman, Alfret Luasunaung, V. Warouw","doi":"10.35800/jasm.v9i2.35130","DOIUrl":"https://doi.org/10.35800/jasm.v9i2.35130","url":null,"abstract":"Bitung City is one of the centers of fishery production in Indonesia. Analysis of capture fisheries resources, especially at the Bitung Oceanic Fishing Port (BOFP) as a fish landing center in Bitung city, needs to be done scientifically in order to find out the need for sustainable capture fisheries. The purpose of this research is to analyze the potential of the types of superior commodities that have the opportunity to be developed. Data was collected using survey methods and in-depth interviews with fishermen and local stakeholders. Analysis of the potential of fish resources was carried out using the surplus production method. From the results of the study, it is found that there are 8 (eight) types of leading commodities in BOFP which can be developed with different potentials. They are: 1) Marlin with a sustainable potential of 159 tons, utilization rate of 44%; 2) Tongkol with sustainable potential of 10.485 tons, utilization rate is 58%; 3) Kembung with a sustainable potential of 183 tons utilization rate of 61%; 4) Big-eye tuna with sustainable potential of 111 tons utilization rate of 69%; 5) Selar with sustainable potential of 450 tons utilization rate of 85%; 6) Yellow Fin Tuna with a sustainable potential of 15.251 tons utilization rate of 86%; 7) Layang with sustainable potential of 7.152 tons utilization rate of 95%, and 8) Cakalang.Indonesian title: Analisis komoditas unggulan dari sumber daya perikanan tangkap di Pelabuhan Perikanan Samudera Bitung, Sulawesi Utara","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130234597","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":"Impact of tropical cyclone Amang on variability of wind speed, salinity, sea surface temperature, and their relationship to chlorophyll-a in sea waters of Sangihe Island","authors":"M. Rachim, J. Schaduw, A. S. Wantasen, Wilhelmina Patty, Edwin L. A. Ngangi","doi":"10.35800/jasm.v9i2.34589","DOIUrl":"https://doi.org/10.35800/jasm.v9i2.34589","url":null,"abstract":"High concentrations of chlorophyll-a can be used to predict where fish gather. On the other hand, tropical cyclones are one of the triggering factors for vertical stirring and upwelling that cause fertility of waters. The Sangihe Island area is not an effective area for the formation of tropical cyclones. However, due to its geographical location with a tropical cyclone area and trajectory, the potential for disturbances caused by cyclones is impactful on Sangihe Island. The distribution of wind speed, salinity, sea surface temperature and chlorophyll-a concentration can be detected by satellite remote sensing imagery. This study aims to analyze the impact of Tropical Cyclone Amang on the variability of wind speed, salinity, sea surface temperature and on the concentration of chlorophyll-a in Sangihe Island. This study useswind speed, salinity, sea surface temperature and chlorophyll-a data during the Amang Tropical Cyclone (January 6-27, 2019) from the AQUA-MODIS satellite imagery. The results show that the relationship between wind speed and chlorophyll-a concentration has impact on other parameters where both parameters showed a strong correlation value. It was also showed on the relationship between sea surface temperature and chlorophyll-a.However, the relationship between salinity and chlorophyll-a concentration showed lowest effect among those parameters.Indonesian title: Dampak siklon tropis Amang terhadap variabilitas kecepatan angin, salinitas, suhu permukaan laut, dan hubungannya dengan klorofil-a di perairan laut Pulau Sangihe","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"507 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123420030","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":"Percentage of mangrove canopy coverage and community structure in Batanta Island and Salawati Island, Raja Ampat District, West Papua Province","authors":"J. Schaduw","doi":"10.35800/JASM.8.1.2020.32426","DOIUrl":"https://doi.org/10.35800/JASM.8.1.2020.32426","url":null,"abstract":"The research aimed at monitoring the condition of mangrove communities in Batanta Island and Salawati Island, Raja Ampat District, West Papua Province. It used method developed by the Indonesian Institute of Sciences Research Center for Oceanography (P2O LIPI). Method in determining the percentage for the coverage of mangrove communities used a hemispherical photography and the data analysis used ImageJ software in excel tabulation. The result showed that mangrove canopy coverage has decreased from 85.73% in 2017 to 84.14% in 2018. Since the observations in 2015, the percentage of mangroves had no significant change. In average the percentage increased as much as 3.45% from 75.09% in 2015 to 78.54% in 2016. Moreover, it increased again by 7.20% in 2017 (85.73%). It indicates that the average change percentage of mangroves is not significant, and it can be concluded that the mangrove ecosystem in this area does not degrade significantly and has a good growth rate. The average density value was 1254.3 trees per hectare in the period of 2016-2018 or it increased to about 16.5% since 2015. The number of species found at the observation site were 5 species (Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, Sonneratia alba, and Xylocarpus granatum) scattered in eight observation stations. From these results it can be concluded that mangrove condition at the research location is stable and gets support for the survival of biota associated therein.","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133515072","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":"Effectiveness of vessel sinking legal action in eradicating illegal fishing in the area of marine and fisheries resources monitoring base of Bitung, North Sulawesi","authors":"Youdy R Suawa, Alfret Luasunaung, M. Lasut, D. Karwur, S. Darwisito","doi":"10.35800/jasm.7.1.2019.24997","DOIUrl":"https://doi.org/10.35800/jasm.7.1.2019.24997","url":null,"abstract":"Title (Bahasa Indonesia): Efektivitas tindakan hukum penenggelaman kapal dalam pemberantasan illegal fishingdi wilayah Pangkalan Pengawasan Sumber Daya Kelautan dan Perikanan Bitung, Sulawesi Utara This study aimed to assess the effectiveness of vessel sinking legal action to eradicate illegal fishing practices by the Ministry of Marine and Fisheries Affairs of Indonesia (MMFAI) in the area of Marine and Fisheries Resources MonitoringBase of Bitung (MFRMBB), North Sulawesi. The assessment was carried out by analysing five aspects, 1) regulations; 2) institutional functions, duties, and authority; 3) institutional programs and planning; 4) ideal conditions; and 5) stakeholder perceptions. The research used a method of ‘content analysis’ and questionnaire survey. The result showed that the implementation to sink foreign and ex-foreign vessels by MMFAI is a legal certainty according to fisheries regulations in Indonesia; it was conducted according to functions, duties, and authorities of the implemented institutions; was conducted well; and has achieved an ideal condition which was indicated by diminishing of illegal fishing practices; it was done according to fisheries regulations and stakeholder perceptions. Finally, it can be concluded that the legal action of vessel-sinking in MFRMBB was effective in eradicating illegal fishing practices.Penelitian ini bertujuan untuk menilai efektifitas tindakan penenggelaman kapal untuk memberantas illegal fishingoleh Kementerian Kelautan dan Perikanan (KKP) RI di Pangkalan Pengawasan Sumber Daya Kelautan dan Perikanan Bitung, Sulawesi Utara. Penilaian dilakukan dengan cara menganalisis 5 aspek, yaitu: 1) peraturan dan ketentuan; 2) fungsi, tugas, dan wewenang lembaga pelaksana; 3) program dan rencana lembaga pelaksana; 4) kondisi ideal; dan 5) persepsi stakeholder. Metode penelitian yang digunakan ialah analisis isi (content analysis) dan survei menggunakan angket. Hasil penelitian menunjukan, bahwa implementasi penenggelaman kapal asing dan eks asing yang dilakukan oleh KKP merupakan suatu kepastian hukum sesuai ketentuan dan peraturan dan perundang-undangan di bidang perikanan yang berlaku; telah dilaksanakan sesuai fungsi, tugas, dan kewenangan KKP RI; telah terlaksana dengan baik; dan telah mencapai kondisi ideal di mana ditandai dengan berkurangnya pelaku tindak pidana perikanan; serta tindakan tersebut sudah sesuai dengan ketentuan dan peraturan yang berlaku di bidang perikanan, menurut persepsi stakeholder. Dengan demikian, dapat disimpulkan, bahwa tindakan hukum penenggelaman kapal yang dilakukan di Pangkalan Pengawas Sumber Daya Kelautan dan Perikanan Bitung adalah efektif dalam memberantas kegiatan illegal fishing.","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121769438","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":"Benthic faunal assemblages in seagrass meadows in Albany, Western Australia","authors":"H. Rifai","doi":"10.35800/jasm.7.1.2019.24996","DOIUrl":"https://doi.org/10.35800/jasm.7.1.2019.24996","url":null,"abstract":"Title (Bahasa Indonesia): Kumpulan fauna bentik di hamparan lamun di Albany, Australia Barat In order to compare benthic fauna assemblages in four locations of seagrass beds in Albany (Princess Royal Harbour, Oyster Harbour, Two People Bay and Frenchman Bay), a research had beenconducted between 18 and 21 April 2017. There were two aims of this study. First, to investigate six sites within four locations with various degree of anthropogenic impact in order to understand the faunal richness and abundance in those locations. Second, to measure and record the environmental factors which are assumed to be important regulators of the observed patterns between the sites. The result showed that the highest faunal abundance (227 Faunal) was found at Frenchman Bay, a less anthropogenically impacted area, while the lowest abundance (26 Faunal) was at Oyster Harbour-Emu Point which was an anthropogenically affected site. However, in terms of faunal diversity, there was no significant difference among all sites. The environmental factor which had significant relationship with the difference in benthic faunal assemblages at each site was found to be coarse sand.Satu kegiatan penelitian pada tanggal 18 hingga 21 April 2017 telah dilakukan untuk membandingkan kumpulan fauna bentik di empat lokasi padang lamun di Albany (Pelabuhan Princess Royal, Pelabuhan Oyster, Teluk Two People, dan Teluk Frenchman). Penelitian inimempunyai dua tujuan, yaitu: 1) menyelidiki enam titik penelitian yang beradadalam empat lokasi dengan berbagai tingkat dampak antropogenik untuk memahami kekayaan dan kelimpahan fauna di lokasi tersebut; dan 2) mengukur dan mencatat faktor-faktor lingkungan yang dianggap berperan sebagai pengaturdari pola yang diamati pada semua lokasi. Hasil penelitian menunjukkan,bahwa kelimpahan fauna tertinggi (227 fauna) ditemukan di Teluk Frenchmanyang merupakandaerah yang kurang terdampak gangguan antropogenik;sedangkan kelimpahan terendah (26 individu) ditemukandi Oyster Harbour-Emu Point yang merupakan lokasi yang terpengaruh secaraantropogenik. Namun, dalam hal keanekaragaman fauna, tidak ada perbedaan yang signifikan di antarasemua lokasi. Faktor lingkungan yang memiliki hubungan signifikan dengan perbedaan kumpulan fauna bentik di masing-masing lokasi ialah pasir kasar.","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":" 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113947273","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":"Mercury (Hg) contamination in Manado Bay, North Sulawesi, Indonesia","authors":"Stephen R Ronoko, D. Karwur, M. Lasut","doi":"10.35800/jasm.7.1.2019.24993","DOIUrl":"https://doi.org/10.35800/jasm.7.1.2019.24993","url":null,"abstract":"Title (Bahasa Indonesia):Kontaminasi merkuri (Hg) di Teluk Manado, Sulawesi Utara, IndonesiaArtisanal gold minings, which are situated in the highlands of the northern part of Sulawesi Island,use mercury (Hg) to extract gold and dischargetheirs tailings into rivers; one of the rivers(Bailang River) is connected to Manado Bay. This could cause Hg contamination into the bay. This study aimed to assess the contamination of Hg in the aquatic ecosystem of the bay. For the assessment, the bay was divided into 2 parts, namely the North and the South, and the contamination was assessed by measuring the total Hg concentration in sediments and fishes. Determination of Hg concentration refers to the Indonesian National Standard (SNI) 01-2896-1992 and Guidance of Balai Riset dan Standarisasi Industri Manado. The results showed that the range of Hg concentrations in fish varied by species; in the northern part of the bay: Holocentridae (0.1144-0.1151 ppm), Siganidae (0.0020-0.0034 ppm), Apogonidae (0.0461-0.050 ppm), and Nemipterus (0.0142-0.0144 ppm ). While in the southern part of the bay: Holocentridae (0.1090-0.1104 ppm), Siganidae (0.160-0.164 ppm), Apogonidae (0.1280-0.1291 ppm), Nemipterus (0.0522-0.0530 ppm) , and Priacanthus sp. (0.0194-0.0210 ppm). The average concentration of Hg in sediments of the bay around river mouths varied based on location, i.e. Bailang River was 0.0502 ppm, Sario River was 0.0270 ppm, Bahu River was 0.0615 ppm, and Malalayang River was 0.0143 ppm.Pertambangan emas rakyat menggunakan merkuri (Hg), yang berada di daerah dataran tinggi bagian Utara Pulau Sulawesi, membuang limbah tailing ke sungai menuju ke laut; satu dari sungai tersebut (Sungai Bailang) bermuara ke Teluk Manado. Hal ini dapat menyebabkan kontaminasi Hg ke lingkungan perairan teluk. Penelitian ini bertujuan untuk menilai kontaminasi Hg di ekosistem perairan teluk tersebut. Untuk penilaian, perairan teluk dibagi 2 bagian, yaitu bagian Utara dan Selatan, dan kontaminasi dinilai dengan cara mengukur konsentrasi Hg total pada sedimen dan ikan. Penentuan konsentrasi Hg mengacu Standar Nasional Indonesia (SNI) 01-2896-1992 dan Panduan Balai Riset dan Standarisasi Industri Manado. Hasil penelitian menunjukkan, bahwa kisaran konsentrasi Hg dalam ikan bervariasi berdasarkan jenis; dibagian Utara teluk: Holocentridae(0,1144-0,1151 ppm), Siganidae (0,0020-0,0034 ppm), Apogonidae (0,0461-0,050 ppm), dan Nemipterus (0,0142-0,0144 ppm).Sedangkandi perairan bagian Selatan teluk: Holocentridae (0,1090-0,1104 ppm), Siganidae (0,160-0,164 ppm), Apogonidae (0,1280-0,1291 ppm), Nemipterus (0,0522-0,0530 ppm),dan Priacanthus sp.(0,0194-0,0210 ppm). Konsentrasi rata-rata Hg di sedimen perairan teluk sekitar muara Sungai Bailang sebesar 0,0502 ppm, muara Sungai Sario sebesar 0,0270 ppm, muara Sungai Bahu sebesar 0,0615 ppm, dan muara Sungai Malalayang sebesar 0,0143 ppm.","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131397449","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":"Analysis of production factors that affect the productivity of tuna handliners based in Bitung Oceanic Fishing Port","authors":"P. Pontoh, Alfred Luasunaung, Emil Reppie","doi":"10.35800/jasm.7.1.2019.24994","DOIUrl":"https://doi.org/10.35800/jasm.7.1.2019.24994","url":null,"abstract":"Title (Bahasa Indonesia): Analisis faktor produksi yang mempengaruhi produktivitas kapal tunahand lineyang berpangkalan di Pelabuhan Perikanan Samudera BitungTuna hand lines have been used widely by fishermen in the waters of Sulawesi Sea and Moluccas Sea, to catch big pelagic species with small fishing boats (2-10 GT). Although the gear’s design has evolved over centuries, there is still potential for improving its catching efficiency and selectivity. However, theproduction factors that affect the productivityare still not known. Theresearch aimed to study several production factors that affectthe productivity of tuna hand liner based in Bitung Oceanic Fisheries Port; andto determine the most influential production factors on productivity of tuna hand liner. This research was conducted from June to November 2017 in Bitung Oceanic Fishing Portthrough applyinga descriptive method based on case study; and the data were analyzed by using multiple linear regression production function. It was found that production factors that may affect the productivity of the tuna hand liner consist of boat size (GT), engine power (PK), amount of fuel (l), number of crew (person) and number of trips (days). The result of partial analysis shows that the most influential production factor to tuna hand liner productivity is the amount of fuel usage.Pancing ulur tuna telah digunakan secara luas oleh nelayan di perairan Laut Sulawesi dan laut Maluku, untuk menangkap ikan pelagis besar dengan kapal-kapal ukuran kecil (2 – 10 GT. Walaupun konstruksinya telah berkembang sejak lama, tetapi masih memiliki potensi untuk meningkatkan efisiensi penangkapan dan selektivitasnya. Namun belum diketahui factor-faktor produksi apa saja yang mempengaruhi produktivitasnya. Oleh karena itu, penelitian ini ditujukan untuk mempelajari beberapa factor produksi yang mempengaruhi produktivitas kapal-kapal tuna hand line (THL) yang berpangkalan di Pelabuhan Perikanan Samudera Bitung; dan menentukan factor produksi yang paling berpengaruh terhadap produktivitas kapal THL.Penelitian ini dilakukan pada bulan Juni sampai November 2017 di Pelabuhan Perikanan Samudera Bitung; dikerjakan dengan metode deskriptif yang didasarkan pada study kasus; dan data dianalisis dengan menggunakan fungsi produksi regresi linier berganda.Faktor-faktor produksi yang dapat mempengaruhi produktivitas kapal THL terdiri dari ukuran kapal (GT), kekuatan mesin (PK), jumlah bahan bakar (l), jumlah anak buah kapal (orang) dan jumlah trip (hari). Hasil analisis parsial menunjukan bahwa faktor produksi yang paling berpengaruh terhadap produktivitas kapal THL adalah jumlah penggunaan bahan bakar minyak.","PeriodicalId":106687,"journal":{"name":"AQUATIC SCIENCE & MANAGEMENT","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128070217","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}