scholarly journals PERIKANAN TONGKOL DI PERAIRAN BUYAT PANTE

2011 ◽  
Vol 7 (2) ◽  
pp. 87
Author(s):  
Meta S Sompie

ABSTRACTFisheries development in Indonesia, especially in North Sulawesi, is to optimize the utilization of resources through a comprehensively integrated approach and accommodate a variety of interests, such as fishermen, national economy, sustainability of marine resources and fisheries, and environmental balance and sustainability. For fisheries policy preparation, adequate information on fish resources is required. One of the fish resources in Buyat Bay area is little tuna (Auxis thazard). This study aimed to evaluate the little tuna resource and fishing season in the waters of Buyat Bay and surrounding areas. The fishing area in Buyat Bay waters is 4.88 km2. The little tuna biomass of Buyat Bay is 0.486 ton/km2. Monthly average catch was 0.7 tons relative to the maximum sustainable catch of 2.37 ton/month, and then the exploitation rate was 29.59%. This meant that the catch landed in Buyat Pante was lower than the monthly maximum sustainable catch. The catch is allowed at 80% of the maximum sustainable catch, which amounted to 1.89 tons/month. Tuna fishing season in Buyat Bay occurred in March and then from May to September following the pattern of the two-month season of the year for high density.ABSTRAKPembangunan perikanan di Indonesia, khususnya di Sulawesi Utara adalah mengoptimalkan pemanfaatan sumberdaya melalui pendekatan yang terintegrasi dengan komprehensif dan mengakomodasi berbagai kepentingan, yaitu: nelayan, ekonomi nasional, kelestarian sumberdaya kelautan dan perikanan, serta keseimbangan dan kelestarian lingkungan. Untuk penyusunan kebijakan perikanan diperlukan informasi yang memadai dari sumberdaya ikan. Salah satu sumberdaya ikan di wilayah Teluk Buyat adalah ikan tongkol (Auxis thazard). Penelitian ini bertujuan untuk mengevaluasi sumberdaya dan musim penangkapan ikan di perairan Teluk Buyat dan sekitarnya. Area penangkapan ikan di perairan Teluk Buyat (4,88 km2). Biomassa ikan ini di Teluk Buyat 0,486 ton/km2. Tangkapan rata-rata bulanan sebesar 0,7 ton, dibandingkan dengan hasil tangkapan maksimum yang lestari dari 2,37 ton/bulan, kemudian tingkat pemanfaatan ikan tuna di Teluk Buyat berada pada 29,59%. Ini berarti bahwa hasil tangkapan yang didaratkan oleh para nelayan Buyat Pante masih berada di bawah eksploitasi. Hasil tangkapan yang diperbolehkan sebesar 80% dari hasil tangkapan maksimum lestari (1,89 ton/bulan). Musim penangkapan tuna di Teluk Buyat terjadi selama enam bulan, yang dimulai dari bulan Maret dan selanjutnya dari bulan Mei hingga September, mengikuti pola musim dua bulan dalam setahun dengan kepadatan tinggi.

2019 ◽  
Vol 5 (2) ◽  
pp. 35
Author(s):  
Dedy Suprianto ◽  
Jhonny Budiman ◽  
Heffry V Dien

Title (Bahasa Indonesia): Analisis pola usaha dan musim penangkapan ikan tuna di Kabupaten Minahasa Tenggara, Provinsi Sulawesi UtaraThis study was aimed to analyze the condition of the tuna fishery business pattern practiced by tuna fishermen and analyze the effort and the exploitation rate for fishing season determination. Data collection was done in Belang District, Southeast Minahasa Regency, for 5 months. The study was descriptive using primary and secondary data. Business pattern was determned using the interactive models of analysis and fishing season applied Average Percentage Methods based on Time Series Analysis. Results showed that fishermen in Southeast Minahasa Regency used the fishing boat owner to bear the operational cost under low selling. Tuna fishing season in Maluccas Sea, based on catches landed in the fishing port of Belang, occurred October to January and May to March because of good weather condition and high fish stock availability in the raft, while famine season occurred in in June to September because of bad weather, difficulty to operate the gear and low tuna stock. As a conclusion, in the famine season the fishermen in Southeast Minahasa Regency applied operational costs borne by the boat owner, but in the fishing season, it became a shared cost through revenue sharing. Tuna fishing season occurred in October to January.Penelitian ini bertujuan untuk menganalisis kondisi perikanan tuna guna mengetahui pola usaha yang dijalankan oleh nelayan tuna dan menganalisis upaya penangkapan serta tingkat pemanfaatan guna mengetahui musim penangkapan ikan tuna. Pengambilan data dilakukan di Kecamatan Belang, Kabupaten Minahasa Tenggara, selama 5 (lima) bulan, Penelitian ini bersifat deskriptif, dengan penggunaan data primer dan sekunder. Selanjutnya data tersebut di analisis untuk mengetahui pola usaha nelayan tuna dengan menggunakan motode interactive model of analysis, sedangkanpola musim penangkapan ikan dianalisis menggunakan Metode Persentase Rata-rata yang didasarkan pada Analisis Runtun Waktu. Hasil penelitian ini menunjukkan bahwa nelayan Kabupaten Minahasa Tenggara menggunakan pola usaha dengan sistem pembiayaan ditanggung oleh pemilik dengan harga jual ikan rendah kepada pemilik perahu. Musim penangkapan ikan tuna di laut Maluku berdasarkan hasil tangkapan yang didaratkan di pelabuhan perikanan belang terjadi pada bulan Oktober sampai Januari dan Mei sampai Maret ini karena cuaca lebih baik dan ketersediaan ikan banyak di rakit, sedangkan musim pecaklik terjadi pada bulan Juni hingga September karena cuaca yang buruk, kesulitan untuk mengoperasikan alat tangkap, serta kurangnya ikan tuna di rakit. Sebagai kesimpulan, nelayan Kabupaten Minahasa Tenggara menggunakan pola usaha dengan sistem biaya operasional menjadi beban pemilik disaat musim peceklik, sedangkan pada musim ikan pola pembagian hasil dijalankan dengan biaya operasional menjadi beban bersama. Musim penangkapan ikan tuna terjadi pada bulan Oktober sampai Januari.


Author(s):  
Roey Shimony ◽  
Zohar Gvirtzman ◽  
Michael Tsesarsky

ABSTRACT The Dead Sea Transform (DST) dominates the seismicity of Israel and neighboring countries. Whereas the instrumental catalog of Israel (1986–2017) contains mainly M<5 events, the preinstrumental catalog lists 14 M 7 or stronger events on the DST, during the past two millennia. Global Positioning System measurements show that the slip deficit in northern Israel today is equivalent to M>7 earthquake. This situation highlights the possibility that a strong earthquake may strike north Israel in the near future, raising the importance of ground-motion prediction. Deep and narrow strike-slip basins accompany the DST. Here, we study ground motions produced by intrabasin seismic sources, to understand the basin effect on regional ground motions. We model seismic-wave propagation in 3D, focusing on scenarios of Mw 6 earthquakes, rupturing different active branches of the DST. The geological model includes the major structures in northern Israel: the strike-slip basins along the DST, the sedimentary basins accompanying the Carmel fault zone, and the densely populated and industrialized Zevulun Valley (Haifa Bay area). We show that regional ground motions are determined by source–path coupling effects in the strike-slip basins, before waves propagate into the surrounding areas. In particular, ground motions are determined by the location of the rupture nucleation within the basin, the near-rupture lithology, and the basin’s local structure. When the rupture is located in the crystalline basement or along material bridges connecting opposite sides of the fault, ground motions behave predictably, decaying due to geometrical spreading and locally amplified atop sedimentary basins. By contrast, if rupture nucleates or propagates into shallow sedimentary units of the DST strike-slip basins, ground motions are amplified within, before propagating outside. Repeated reflections from the basin walls result in a “resonant chamber” effect, leading to stronger regional ground motions with prolonged durations.


Author(s):  
John E.H.J. Foeh ◽  
Reyner Tekad Tuera

Fish as a natural resource has a very high potential as a source of foreign exchange and income. Arrest of the proper techniques of some fish species will provide optimal benefits. The objective of this study is to analyze the financial feasibility of tuna fishing of PT Serena Marine in area of North Sulawesi Sea. Through certain assumptions and calculations of financial feasibility with present value concept (NPV, BCR and IRR) and profitability ratios such as ROA, ROI and ROE, also break-even point, and payback period. The result showed that, this business activity will be feasible and profitable. The results show that based on those profitability indicators were above 1%, NPV calculated is positive, BCR is 1.62 or > 1 while IRR is 46 % and greater than discounted interest rate using in this financial analysis, Payback period will be achieved on the year 25thmonths or after 2 years of operations. It shows the activity of tuna fishing by PT Serena Marine, is feasible in financial aspect.


2019 ◽  
Vol 10 (1) ◽  
pp. 18
Author(s):  
Donald H. Simanjuntak ◽  
Lawrence J. L. Lumingas ◽  
Joudy R. R. Sangari

This research was conducted in the city of Bitung, North Sulawesi Province with activities centered on the Bitung Ocean Fisheries Port (PPS), which began from mid March to April 2019. The fishing activities studied are using the fishing areas around the waters of  North Sulawesi Province namely the Sulawesi Sea and The Maluku Sea which are included in WPP 715 and 716 based on tuna catch landed data on PPS Bitung. The purpose of this study was to analyze the value of sustainable potential by looking at the level of utilization and Maximum Sustainable Yield (MSY) of tuna in the waters around North Sulawesi Province based on a surplus production model approach (Schaefer Model). This research is expected to be used as a consideration in the management of tuna stocks around the waters of North Sulawesi Province, and can be used as a basis for further research. This study uses a secondary data collection method in the form of fishery statistics documents. The data used are data from tuna fishing and fishing (effort), from 2014 to 2018 (5 years). The results showed that the sustainable potential of tuna fisheries around the waters of North Sulawesi Province based on North Sulawesi PPS data indicated that, the sustainable potential value of tuna that could be caught was 14,173.51 tons / year which is counted as 80% of the value of tuna resources around the waters of North Sulawesi Province. PPS Bitung data which amounted to 17,716.15 tons / year for Hmsy, 1,200.15 trips / year for Emsy, with an average CPUE value of 2014-2018 of 19 tons / trip. The level of tuna utilization around the waters of North Sulawesi Province is based on data from PPS Bitung in 2014, 2017 and 2018 which indicate that there were indications of overfishing with the largest utilization rate in 2014 which reached a value of 155.09%.Keywords: tuna, Bitung, Bitung PPS, sustainable potential, MSY. ABSTRAKKegiatan penelitian ini berlangsung di Kota Bitung, Provinsi Sulawesi Utara dengan kegiatan berpusat di Pelabuhan Perikanan Samudera (PPS) Bitung, yang dimulai  dari pertengahan bulan Maret hingga bulan April 2019. Aktivitas perikanan tangkap yang ditelaah berlangsung di sekitar perairan Provinsi Sulawesi Utara yaitu Laut Sulawesi dan Laut Maluku yang masuk ke dalam WPP 715 dan 716 berdasarkan data tangkapan tuna yang didaratkan di PPS Bitung. Tujuan dari penelitian ini adalah untuk menganalisis nilai potensi lestari dengan melihat tingkat pemanfaatan dan maximum sustainable yield (MSY) ikan tuna di sekitar perairan Provinsi Sulawesi Utara berdasarkan pendekatan model produksi surplus (Model Schaefer). Penelitan ini diharapkan dapat digunakan sebagai bahan pertimbangan dalam pengelolaan stok ikan tuna di sekitar perairan Provinsi Sulawesi Utara, serta dapat digunakan sebagai dasar untuk penelitian selanjutnya.  Penelitian ini menggunakan metode pengumpulan data sekunder berbentuk dokumen. Data yang diambil adalah data tangkapan ikan tuna dan upaya penangkapan ikan atau effort (trip), dari tahun 2014 sampai dengan 2018 (5 Tahun). Hasil penelitian menunjukkan potensi lestari perikanan tuna di sekitar perairan Provinsi Sulawesi Utara berdasarkan data PPS Bitung Sulawesi Utara nilai potensi lestari tuna yang bisa ditangkap adalah 14.173,51 ton/tahun 80% dari nilai pemanfaatan sumber daya perikanan tangkap tuna di sekitar perairan Provinsi Sulawesi Utara berdasarkan data PPS Bitung yang sebesar 17.716,15 ton/tahun untuk Hmsy, 1.200,15 trip/tahun untuk Emsy, dengan nilai CPUE rata-rata tahun 2014-2018 sebesar 19 ton/trip. Tingkat pemanfaatan tuna di sekitar perairan Provinsi Sulawesi Utara berdasarkan data PPS Bitung Sulawesi Utara di tahun 2014,2017 dan 2018 sudah yang menandakan adanya indikasi overfishing dengan tingkat pemanfaatan terbesar di tahun 2014 yang mencapai nilai 155,09%.Kata Kunci: ikan tuna, Bitung, PPS Bitung, potensi lestari, MSY.


Author(s):  
Hawati Hawati ◽  
Angkasa Putra

The utilization of fish resources by fishermen in the waters of Bone Bay uses different fishing gear and patterns as well as different utilization and management policies. This can affect the sustainability of existing fish resources, one of which is in the Bone Regency area. This study aims to analyze the technical aspects of purse seine and fishing gear used by fishermen in the waters of Bone Bay, especially in Bone Regency. Furthermore, the technical aspects of the vessel and fishing gear as a result of the calculation are compared with the provisions stipulated in the PERMEN-KP Number 71 of 2016 to determine the zone of the fishing area. This research was conducted in Panyula Village, which is the fishing base area of purse seine fishermen and the waters of Teluk Bone, starting from November 2016 to March 2017. This research uses a combination of survey methods and case studies. The type of data used consists of primary data and secondary data. Based on the technical aspects of purse seine vessels, ring trawl fishing gear and FAD fishing tools, purse seine units should be operated on Fishing Route II and Fishing Route III in accordance with Minister of Marine Affairs and Fisheries Regulation Number 71 of 2016.


2019 ◽  
Vol 23 (4) ◽  
pp. 171
Author(s):  
Bram Setyadji ◽  
Umi Chodriyah

Knowledge on seasonal fishing pattern is essential in fisheries research in order to increase the effectiveness of fishing and at the same time protecting the fishing ground from excessive fishing practices. Determining the seasonal fishing pattern of large pelagic fishes, namely large tuna (yellowfin and bigeye), small tuna (mackerel) and skipjack tuna were the objective of this study. Data from the 2013-2015 fishing operation time series were used to analyze the fishing season using the percentage average per unit effort (CPUE) method. The main focus of this study was purse seine fishery. The research showed that high fishing season of large pelagic fishes allegedly occurred during May to July, which reached its peak on May. On the other hand, low fishing season occurred during January to April, with the lowest on March. There were similarities between large tuna, small tuna and skipjack in term of their seasonal fishing pattern, although they did not show any good correlation (r<0.5). This might due to fact that even tough large tuna, small tuna and skipjack tuna shared the same ecological niche but apparently, they did not show any interaction (symbiosis) but competition.


2018 ◽  
Vol 68 ◽  
pp. 04019 ◽  
Author(s):  
Ignatius Tri Hargiyatno ◽  
Suyud Warno Utomo ◽  
Rauf Achmad Sue ◽  
Wudianto

This paper aims to describe the Fish Aggregating Devices (FADs) fisheries in Indonesia and its relation to sustainable fisheries management. On tuna fishing, FADs are widely used as a tool to attract fish. FADs uncontrolled development is feared to have an impact on the sustainability of fish resources. We found that most of the fish caught around FADs are still juvenile. Deployment FADs can also interfere with the swimming pattern of tuna resources. This is negatively affecting the sustainability of tuna resources. However, from the social and economic aspects, FADs provide significant benefits for fishing communities. The Government has imposed regulations on FADs but not yet implemented. The objective of SDG's in the management of tuna fisheries associated with FADs can be implemented through the application of RFMO regulations. Findings from this paper can be used for policy recommendations for the management of sustainable FADsfisheries.


2017 ◽  
Vol 13 (1) ◽  
pp. 35
Author(s):  
Dharmadi Dharmadi ◽  
Fahmi Fahmi

Penelitian mengenai keragaman jenis Elasmobranchi dilakukan pada bulan Januari sampai dengan Desember 2002 di pelabuhan-pelabuhan perikanan PPI Cilacap, TPI Palabuhanratu, TPI Kedonganan-Bali, dan PPI Tanjung Luar-Lombok Timur. Cucut botol Squalus sp. merupakan jenis cucut laut dalam yang paling sering dijumpai selama penelitian berlangsung. Hasil penelitian menunjukkan bahwa cucut botol betina lebih sering tertangkap dibandingkan cucut jantan pada setiap waktu pengamatan. Frekuensi panjang cucut botol tertinggi dijumpai pada bulan Juni danAgustus yaitu berkisar antara 62 sampai dengan 68 cm. Nisbah kelamin cucut botol antara jantan betina selama pengamatan adalah 1:1,83. Hubungan antara panjang total tubuh dan panjang klasper cenderung linier dengan nilai R2=0,634326. Puncak musim penangkapan cucut botol terjadi sekitar bulan Agustus. Sedangkan daerah penangkapan cucut botol adalah di perairan Samudera Hindia. A study on diversity Elasmobranchi of was conducted using market surveys method from January to December 2002 at several fish landings in southern Indonesia, i.e. the Cilacap, Palabuhanratu, Kedonganan- Bali, and Tanjung Luar-East Lombok landing sites.A deep water shark, Indonesian shortnose spurdog (Squalus sp.), was the most common deep water sharks captured in the area during the study. Results show that females sharks were caught more frequent at every observation than those of males. The most abundant of Indonesian shortnose spurdog was recorded in June and August ranging from 62 to 68 cm in total length. Sex ratio between males and females of Squalus sp. during the study was 1:1.83, and the relationship between total length and claspers length of dogfish shark was linier (R2=0.634326). The peak fishing season of Indonesian spurdog was occurred in August with the fishing area was in the Indian Ocean.


Author(s):  
D. Ernaningsih ◽  
Domu Simbolon ◽  
Eko Sri Wiyono ◽  
Ari Purbayanto

<p>Utilization of fishing area in Banten Bay by various activities may cause multi sectors conflicts related to management of the bay. The integrated zone system in that area has not been established yet; therefore it is needed to be studied. The objectives of this study were to 1) determine fishing season and fishing ground; 2) determine indicators and criteria of fishing zone; 3) establish fishing zone. The study was conducted in four fish landing centers which are located in Karangantu, Terate, Wadas, and Kepuh from January to April 2010. Data were collected by surveying analyzed using the fishing season index analysis, relationship analysis between sea surface temperature, chlorophyll-a and fish abundance, and GIS analysis. Based on the results, it were revealed that 1) peak fishing season of pelagic fish was from November to January and demersal fish was from November to December; 2) the catches from fishing grounds surrounding Panjang island were anchovies, trevallies, squids, Indian mackerels, pony fishes, Fringescale sardinella; surrounding Pamujan besar island were threadfin bream, shrimps; and surrounding Tunda island were eastern little tuna, narrow barred king mackerels, black pomfret, red snapper, great trevally, scads, mullets, squids; 3) development indicators of fishing zone were (i) feasibility of fishing ground, (ii) compatibility of fishing gears with fishing grounds, (iii) possibility of conflicts, (iv) infrastructure, (v) carrying capacity of environment; 4) Banten bay water was divided into three fishing zones, they were (i) passive zone, (ii) passive and outboard motor zone, (iii) active and inboard motor zone.</p><p><strong>Key words:</strong> fishing ground, fishing zone, utilization</p>


Author(s):  
Akshitha Deeti

Abstract: This paper delineates a prototype for assessing, viewing, and estimating some environmental constraints such as temperature, humidity, toxic gas levels in intensely contaminated regions, and collection of garbage in the surrounding areas. This system was developed using the Arduino Uno microcontroller and various sensors namely DHT11, MQ-135, HC-SR04 Ultrasonic, it is a device of great scalability levels, price effectiveness and suitable for other environmental monitoring applications. Environmental air parameters directly have an effect on the current entity, and will amend from regularity or maybe every single second in a while, with a speedy manufacture beyond several decades earlier and dramatic increase of demand for individuals to observe the native air quality. The atmosphere is a tumultuous system, air quality is predisposed by several aspects and may vary hastily. Air constraints and quality directly have an effect on human’s normal lives, and also wellbeing of outside tasks. At present times, technologies are getting smarter day-by-day, as to clean the environment waste management system was developed by using Arduino. This Ultrasonic sensor is integrated to the microcontroller and is positioned on the top of the dustbin. If dustbin is not upheld then this can cause an insalubrious environment and further affects the people living in close proximities this article comprises comprehensive illustration of the system architecture, hardware and software requirements. The practicality of the system is validated through the publication of the outcomes achieved. Keywords: DHT11 sensor, MQ-135 sensor, HC-SR04 Ultrasonic sensor, Arduino UNO, Jumper wires.


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