scholarly journals KEBIJAKAN DAN STRATEGI PENGELOLAAN PERIKANAN TANGKAP DI DANAU TOBA PASKA INTRODUKSI IKAN BILIH

2017 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Sonny Koeshendrajana
Keyword(s):  
Fishery Management ◽  
Positive Impact ◽  
Management Practice ◽  
Fishing Effort ◽  
Survey Method ◽  
Fish Stock ◽  
Fishing Gear ◽  
Management Options ◽  
Rapid Appraisal ◽  
Descriptive Method

Pengelolaan perikanan tangkap pada hakekatnya adalah pengendalian penangkapan (control of fishing) dan pengendalian upaya penangkapan (control of fishing effort) melalui sejumlah opsi pengelolaan yang diimplementasikan oleh pihak pengelola (management authority). Kajian kebijakan dan strategi pengelolaan perikanan tangkap di perairan Danau Toba pasca introduksi ikan bilih (Mystacoleucus padangensis Bleeker) dimaksudkan untuk memberikan panduan praktek pengelolaan yang mampu menjamin keberlanjutan perikanan ikan bilih di perairan Danau Toba. Metode survei penilaian cepat (rapid appraisal survey) dan review literatur digunakan dalam kajian ini; sedangkan metode analisis deskriptif tabulatif dan content analysis digunakan untuk membantu pengambilan kesimpulan. Hasil kajian menunjukkan bahwa ikan bilih yang ditebarkan ke Danau Toba 2.840 ekor dengan ukuran panjang berkisar antara4,1-5,7 cm dan bobot 0,9-1,5 g pada tahun 2003 telah mampu memberikan dampak positif secara ekonomi dan sosial bagi masyarakat sekitar Danau Toba. Penggunaan alat tangkap yang kurang ataupun tidak terkontrol telah memberikan indikasi penurunan jumlah dan kualitas stok ikan bilih; sehingga implementasi opsi pengelolaan yang meliputi pengembangan kawasan konservasi dan pengaturan serta pengendalian penggunaan alat tangkap bagan untuk menjamin keberlanjutan perikanan ikan bilih perlu segera diterapkan oleh pihak pengelola.Fishery management is essentially a control of fishing and fishing effort through various management options implemented by a management authority. Studies on policies and strategies for fishery management in the Lake Toba water body post introducing or stocking of bilih fish (Mystacoleucus padangensis Bleeker)aimed at providing a sort of guidelines for management practice in order to ensure sustainability of such the fishery. Rapid appraisal survey method and literature review were used in this study. Analysis of the study used a descriptive method compounded by cross tabulated data techniques and a content anaysis method. Results show that introducing of bilih fish in the Toba Lake amounted of 2,840 piece with body length of 4.1-5.7 cm and body weight of 0.9-1.5 g in 2003 has been able to provide a positive impact to social and economic aspects of the society surrounding the Lake Toba. However, the use of uncontrolled fishing and fishing effort was led to indication of decreasing quantitatively and qualitatively such of the fish stock; therefore, implementation of management options of developing a protected or conserved area and controlled the use of bagan fishing gear has to be imposed by management authority.

scholarly journals Bioeconomic Approach for Assessing Status of Trawl Fishery in the Straits of Malacca

2021 ◽  
Vol 34 (4) ◽  
Author(s):  
HOONG SANG WONG ◽  
◽  
CHEN CHEN YONG ◽  
AZMAH OTHMAN
Keyword(s):  
Fishery Management ◽  
Statistical Tests ◽  
Fishing Effort ◽  
Current Status ◽  
Fish Stock ◽  
Base Case ◽  
Current Effort ◽  
Price Inflation ◽  
Trawl Fishery ◽  
Straits Of Malacca

The Straits of Malacca provides half of Malaysia’s total marine fish and seafood supply. Due to depleted fish stock, the Malaysian Government has established a comprehensive legal framework to reduce overfishing in the Straits over the last five decades. However, there are limited scientific studies on the current status of stock recovery. This paper aims to use bioeconomic approach to determine the current trawl fishery status in the Straits. Various statistical tests showed that the Clarke-Yoshimoto-Pooley model was better than the Schnute model in predicting and thus used to estimate the crucial bioeconomic parameters. The current yield and standardised effort of 239,692 tonnes and 931,692 standard fishing days were very close to the estimated biological maximum sustainable yield (239,915 tonnes) and above 18 % of the standardised effort (763,649 standard fishing days) to achieve it. The maximum economic yield was estimated at 201,542 tonnes while the corresponding standardised effort was 396,799 standard fishing days indicating serious economic overfishing in the Straits. If the current effort can be reduced by 57 %, fish biomass and economic rent will increase by 97 % and 835 %, respectively. A price sensitivity analysis predicted that demand-pull fish price inflation could exacerbate the overfishing problem, particularly under unrestrained environment. A 50 % increase in price could lead to a 132 % increase in fishing effort from the base case. The findings of this paper provide valuable insights for fishery managers to refine their existing fishery management program to achieve sustainable fishery for the future.

scholarly journals ANALISIS BIOEKONOMI SUMBER DAYA IKAN TENGGIRI (Scomberomorus commerson) DI PERAIRAN KABUPATEN INDRAMAYU JAWA BARAT)

2014 ◽  
Vol 4 (2) ◽  
pp. 117
Author(s):  
Lugas Lukmanul Hakim ◽  
Zuzy Anna ◽  
Junianto Junianto
Keyword(s):  
Natural Resources ◽  
Fishing Effort ◽  
Fishing Ground ◽  
Survey Method ◽  
Fishing Gear ◽  
Total Allowable Catch ◽  
Spanish Mackerel ◽  
Management Regime ◽  
Gill Net ◽  
Scomberomorus Commerson

Penelitian ini memaparkan analisis bioekonomi pemanfaatan sumber daya ikan tenggiri pada berbagai rezim melalui Model Gordon Schaefer dengan model estimasi parameter biologi CYP serta arah kebijakan pengelolaannya di Kabupaten Indramayu. Penelitian ini dilaksanakan pada Bulan Februari-Juli 2014 dengan metode survey melalui analisis kuantitatif deskriptif. Hasil penelitian menunjukkan laju pertumbuhan intrinsik (r) adalah 10,291 ton/tahun, koefisien daya tangkap (q) adalah 0,001673 ton/trip, daya dukung lingkungan adalah 250,028 ton/tahun, biaya (c) adalah 1,762 Rp/trip dan harga (p) adalah 30,750 Rp/ton. Upaya maksimum lestari (EMSY) yaitu 3076 trip/tahun dengan nilai produksi maksimum lestari (hMSY) sebesar 643,260 ton/tahun. Upaya MEY (EMEY) sebesar 2654 trip/tahun dengan produksi (hMEY) sebesar 631,141 ton/tahun. Upaya penangkapan perikanan terbuka (Eoa) adalah 5.308 trip/tahun dengan produksi (hOA) sebesar 304,689 ton/tahun. Kegiatan pemanfaatan menunjukkan tangkap lebih secara biologi dan ekonomi. Implementasi kebijakan dari penelitian ini adalah pembatasan upayasebesar 314-736 trip, pengaturan armada alat tangkap jaring insang hanyut adalah 353-409 unit, payang 0-5 GT adalah 409-474 unit, payang > 5-10 GT adalah 73-85 unit, Jumlah tangkapan diperbolehkan ikantenggiri sebesar 514,608 ton dengan kuota jaring insang hanyut sebesar 485,680 ton, payang 0-5 GT sebesar 5,772 ton, payang > 5-10 GT sebesar 23,156 ton, pengaturan teknis lainnya (perlindungan SDAdan DPI, pengawasan pemanfaatan sumber daya dan pungutan perikanan tangkap).Title: Bioeconomic Analysis of Narrow-barred Spanish Mackerel (Scomberomorus commerson) in The Water of Indramayu Regency West JavaThis research analyzed bioeconomic modelling of narrow-barred spanish mackerel in every fisheries management regime through Gordon Schaefer Model and CYP Parameter Estimation model, also a direction of its management policy in Indramayu Region. This research was conducted from February to July 2014, survey method and descriptive quantitative analysis were used in carrying out this research. The results of this research indicated that intrinsic growth parameter (r) of narrow-barredspanish mackerel approximately 10,291 ton/year, catchability coefficient (q) was about 0,001673 ton/trip, carrying capacity (K) reached at 250,028 ton/year, cost (c) was 1,762 Rp/trip and price (p) was 30,750Rp/ton. Maximum sustainable yield fishing effort (EMSY) reached at 3,076 trip/year with productionof MSY (hMSY) approximately 643,260 ton/year. MEY fishing effort (EMEY) reached 2,654 trip/year with MEY production (hMEY) Approximately 631,141 ton/year. Open access fishing effort (Eoa) reached about 5.308 trip/year with production (hOA) approximately 304,689 ton/year. Harvesting of narrow-barred spanish mackerel indicated biological and economic overfishing. The implementation from this research results were conducting limited entry for 314-736 trip; controlling fishing fleet for each fishing gear: gill net (< 5 GT) was about 353-409 unit, seine net (< 5 GT) was about 409-474 unit, others seine net (>5- 10GT) was 73-85 unit; Total Allowable catch of narrow-barred spanish mackerel was about 514,608 ton with quote for every fishing gear: gill net was about 485,680 ton, seine net (<5GT) approximately 5,772 ton,others seine net (>5-10GT) was about 23,156 ton; and others in technical control (natural resources and fishing ground conservation, controlling of natural resources harvesting and fishing fee aplication).

Innovations in Fishing Gear Design Aiming at the Sustainable Use of Commercial Fish Stocks

2006 ◽  
Author(s):  
Erdmann Dahm
Keyword(s):  
Fishery Management ◽  
Sustainable Use ◽  
Mesh Size ◽  
Fish Stock ◽  
Fishing Gear ◽  
Commercial Fish ◽  
Fish Stocks ◽  
Gear Design ◽  
Ecological Changes ◽  
Open Shape

The present status of some of the fish stocks in North Sea and Baltic shows them to be outside safe biological limits. Reasons for this lie partly in hydrographic and ecological changes not in favour for a constant supply of fresh recruits to the fishery every year. On the other hand, fishery has its share in the observed downward trend by growth overfishing and reducing the size and number of possible spawners. The only mean available for the fishery management to restore a fish stock composed of several year classes is to apply technical measures as e.g.closures in space and time or fishing gear regulations. The breakdown of the historical measure “mesh size regulation in diamond mesh trawls” due to technological progress has created a wave of worldwide research. It has focused on trawl codends where the meshes are held artificially in their most open shape or by introducing into the trawl metal structures able to separate small from big fish or fish from crayfish. A parallel development of a scientifically objective mesh measuring instrument will help to enforce the new regulations. However, longer use of some of the new designs has revealed some deficiencies. Other innovative designs or the concept of certified codends will hopefully ensure the permanently better selectivity of contemporary trawl codends.

scholarly journals Analisis Kapasitas Perikanan dengan Pendekatan Data Envelopment Analysis (DEA) di Perairan Utara Gorontalo

2009 ◽  
Vol 10 (1) ◽  
pp. 23-33
Author(s):  
Abdul Hafidz Olii
Keyword(s):  
Data Envelopment Analysis ◽  
Fishing Effort ◽  
Purse Seine ◽  
Fish Stock ◽  
Fishing Gear ◽  
Data Envelopment ◽  
Fishing Boat ◽  
Gill Net ◽  
Fishing Capacity ◽  
Using Data

Fishing capacity is ability of fishery input (boat) used in output production (catch), it measured by using fishing unit or other fishing gear production. In simple way, fishing capacity is an ability of fishing boat (with all aspects) to capture fish. This ability will depend on the fish stock to be captured (seasonally or yearly) and the ability of the fishing gear itself. The aims of this research are to analyze technical efficiency and capacity of capture fishery in between years, of fishing gear and of purse seine. Research location was in the northern water of Gorontalo. Data was analyzed using data envelopment analysis (DEA). The development of capture fishery in 20 years since 1986 - 2005 of the northern water of Gorontalo showed that 1995, 2003 and 2005 are the most efficient years compared to other years, therefore, these years can be used as a basic of allocating fishing effort and catch. The most efficient fishing gear was purse seine and line, whereas gill net is an inefficient fishing gear. For purse seine, there are 11 boats that have efficiency value of 1. In order to reach efficiency level of each purse seine, it needs to decrease the number of input such as reducing 27.97 percent of boat, reducing the length of fishing duration to 29.49 percent,reducing the length of fishing trip / tonnage month to 26.87 percent and reducing fishing operation cost to 15.67 percent.

Use and abuse of fishery models

2001 ◽  
Vol 58 (1) ◽  
pp. 10-17 ◽  
Author(s):  
Jon T Schnute ◽  
Laura J Richards
Keyword(s):  
World Literature ◽  
Fishery Management ◽  
Stock Assessment ◽  
Management Practice ◽  
Fish Stock ◽  
Fish Stocks ◽  
Creative Thought ◽  
Modeling Process ◽  
Stock Biomass ◽  
Fish Stock Assessment

Recent failures of important fish stocks give mathematical models a poor reputation as tools for fishery management. This paper examines the role of models in fish stock assessment and identifies reasons why they can fail. Starting with laws of arithmetic, models attempt to relate observed data to unknown quantities, such as the stock biomass and abundance. Typically, the number of unknowns greatly exceeds the number of observations, and models must impose hypothetical constraints to give useful estimates. We use the word "fishmetic" (rhymes with arithmetic) to represent uncertainty in the conversion of arithmetic to practical fishery models. Arbitrary assumptions cannot be avoided, even though different choices can greatly influence the outcome of the analysis. We compare the modeling process in fisheries with that in other sciences. World literature also offers useful analogies. Potential reasons for failure suggest possible improvements to the application of fishery models. We recommend that modelers remain skeptical, expand their knowledge base, apply common sense, and implement robust strategies for fishery management. Particularly creative thought must be applied to the problem of translating scientific knowledge into management practice. Comparisons between fish stocks and financial stocks illustrate some possibilities.

scholarly journals Analisis Potensi Lestari Hasil Tangkapan Trammel Net Di Kabupaten Indramayu

2021 ◽  
Vol 3 (1) ◽  
pp. 17-27
Author(s):  
Dedi Supriadi ◽  
Bangun Ichsanudin ◽  
Aman Saputra ◽  
Restu Widayaka
Keyword(s):  
Research Method ◽  
Penaeus Monodon ◽  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Fishing Gear ◽  
Sustainable Yield ◽  
Catch Per Unit Effort ◽  
Annual Productivity ◽  
One Year ◽  
Descriptive Method

This study aims to analyze the Catch Per Unit Effort (CPUE) and Maximum Sustainable Yield (MSY) from the catch of trammel net fishing gear by fishermen in Indramayu Regency, West Java. The research method used is descriptive method, which is a method to create a systematic, factual and accurate description of the facts, characteristics and relationships of environmental factors or phenomena being studied. Data analysis was carried out on the catch and catch effort in the last 5 years (2011-2015) on trammel net fishing gear. Trammel net fishing gear is environmentally friendly fishing gear and is an effective fishing tool in fishing productivity with the composition of the catch consisting of the main catch is tiger shrimp (Penaeus monodon) and bycatch such as tigawaja fish (Johnius belangeri), petek Leiognathus bindus) and layur (Trichyurus haumela). The highest annual productivity of trammel net fishing gear during 2011-2015 occurred in 2011 and 2014 at 0.018 tons / trip and the lowest productivity occurred in 2015 at 0.013 tons / trip, and the maximum sustainable catch or MSY in Indramayu Regency was 32147, 1 ton / year, with an estimated optimum fishing effort of 103516.67 trips for one year and R2 of 0.2977. This study aims to analyze the Catch Per Unit Effort (CPUE) and Maximum Sustainable Yield (MSY) from the catch of trammel net fishing gear by fishermen in Indramayu Regency, West Java. The research method used is descriptive method, which is a method to create a systematic, factual and accurate description of the facts, characteristics and relationships of environmental factors or phenomena being studied. Data analysis was carried out on the catch and catch effort in the last 5 years (2011-2015) on trammel net fishing gear. Trammel net fishing gear is environmentally friendly fishing gear and is an effective fishing tool in fishing productivity with the composition of the catch consisting of the main catch is tiger shrimp (Penaeus monodon) and bycatch such as tigawaja fish (Johnius belangeri), petek Leiognathus bindus) and layur (Trichyurus haumela). The highest annual productivity of trammel net fishing gear during 2011-2015 occurred in 2011 and 2014 at 0.018 tons / trip and the lowest productivity occurred in 2015 at 0.013 tons / trip, and the maximum sustainable catch or MSY in Indramayu Regency was 32147, 1 ton / year, with an estimated optimum fishing effort of 103516.67 trips for one year and R2 of 0.2977.

scholarly journals Fish stock estimation in Sikka Regency Waters, Indonesia using Single Beam Echosounder (CruzPro fish finder PcFF-80) with hydroacoustic survey method

2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Muhammad Zainuddin Lubis ◽  
Wenang Anurogo
Keyword(s):  
Fishery Management ◽  
Data Retrieval ◽  
Acoustic Method ◽  
Horizontal Distribution ◽  
Survey Method ◽  
Fish Stock ◽  
Total Biomass ◽  
Single Beam ◽  
Fish Resources ◽  
Stock Estimation

Sikka regency waters including fishery management with a high utilization status so that the necessary stages of an intensive monitoring and research potential of fish resources. This study aimed to obtain the estimated value of stock biomass and density of fish resources with the acoustic method. Quantitative data obtained will be a source of current information on the state of fish resources in the Sikka regency waters, Indonesia. The research was conducted in May 2015. Acoustic data retrieval, using instruments CruzPro fish finder PcFF-80 with sound velocity of 1516 m / s, power 2560 Watt, and method in survey acoustic use hydroacoustic long transect. The horizontal distribution shows a fluctuation striking at research location has the highest salinity levels in the range of 29.3-29.8 psu. Total biomass of fish in this study showed more the number is at a depth of 11-20 m that is 2,008 tons/km and at a depth of 1-10 m have the total fish biomass is 12.33 tons/km, single detection is done using a single target hydroacoustic show more dominance at a depth of 11-20 m in Sikka regency waters, MTB, Indonesia in May 2015. Number of data from results obtained by looking at the relationship between the number of the data with the total biomass in 1-10 m depth has equation Y = 0.0967x + 0.0486 with R2 is 0.0464 (4%) , while at a depth of 11-20 m has a regression equation is Y = 0.0003x + 0041 with the R2 is 0.0091 (0.9%). Variations in the data or the detection of single targets have variations over the data that is at a depth of 11-20 m with the lowest regression is 0.9%.Keywords:   Hydroacoustic, Salinity, Biomass, Stock estimation, Sikka regency waters.

scholarly journals PENDUGAAN POTENSI SUMBERDAYA PERIKANAN LAUT DAN TINGKAT KERAGAAN EKONOMI PENANGKAPAN IKAN (KASUS DI TPI SENDANG BIRU KABUPATEN MALANG)

2011 ◽  
Vol 12 (2) ◽  
pp. 113-126
Author(s):  
Hulaifi Hulaifi
Keyword(s):  
Economic Model ◽  
Negative Impact ◽  
Positive Impact ◽  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Survey Method ◽  
Sustainable Yield ◽  
Maximum Economic Yield ◽  
Negative Impacts ◽  
Method Analysis

The Increased fishing intensity will provide positive and negative impacts. Positive impact is an increase in production that can provide benefits, while the negative impact is eventually decline in production catches. The purpose of this research is potential of Estimating Maximum Sustainable Yield (MSY) in Malang Regency could still be maintained. MSY at the level of Maximum Economic Yield (MEY). Optimization of fishing effort and analysis economic eligibility fishing effort. The method of research using the survey method, Analysis of the data used is static Bio-economic model, and Gorden-Schaefer model. While the research results obtained MEY value of 5,789,952. kg/year and the actual conditions, a production of 5,221,781 kg/year and MSY of 5,829,206 kg/year, the rate of 90% utilization optimization, and optimal fishing levels have exceeded MSY. The advantage of fishermen in biology and economics as much as 5,789,952 kg/year. Conclusion The results showed that the water condition in Malang Regency was not economically efficient, because already there is excess fishing effort. Optimization needs to be done by limiting fishing effort, intensified fishing activities in deeper waters.  

scholarly journals PERSEPSI MASYARAKAT DAN DAMPAK SOSIAL EKONOMI TERHADAP LAHAN BEKAS TAMBANG TIMAH SEBAGAI KAMPOENG REKLAMASI AIR JANGKANG DI DESA RIDING PANJANG KABUPATEN BANGKA

2021 ◽  
Vol 7 (1) ◽  
pp. 267
Author(s):  
Vinda Asparita ◽  
Fournita Agustina ◽  
Yudi Sapta Pranoto
Keyword(s):  
Economic Impact ◽  
Positive Impact ◽  
Survey Method ◽  
Index Number ◽  
The People ◽  
The Social ◽  
Qualitative Descriptive ◽  
Reclamation Area ◽  
Socio Economic Impact ◽  
Descriptive Method

Mining activities not only cause impacts that occur at the mine site but also the surrounding environment, so that reclamation is needed. This study aims to describe the community's perception of the existence of Kampoeng Air Jangkang Reclamation and to describe the socio-economic impact of the community on the existence of the Jangkang Water Reclamation Kampoeng. This research was conducted from September 2019 to September 2020 in Riding Panjang Village, Merawang District, Bangka Regency. The method used in this research is a survey method. Meanwhile, the sampling method used in this study was purposive sampling. The number of samples taken in this study were 93 samples from the people of Riding Panjang Village. The analytical method used is a qualitative descriptive method with a Likert scale. The results showed that the community's perception of the ex-mining land as Kampoeng Reclamation was strongly agreed with an index number of 82.4 percent covering the pre-reclamation stages, 81.4 percent covering the implementation of Kampoeng Reclamation development and an index figure of 88.8 percent covering the success of Kampoeng development. Reclamation. The social impacts that occur include positive impacts both on environmental conditions and the safety of the communities around the reclamation area. The resulting economic impact is a positive impact on people's income and employment.

EFEKTIVITAS PENDIDIKAN DAN PELATIHAN DALAM MENINGKATAN KINERJAAUDITOR DI INSPEKTORAT KABUPATEN LAMONGAN PROVINSI JAWA TIMUR

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Ely Sukmana
Keyword(s):  
Training Programs ◽  
Positive Impact ◽  
Education And Training ◽  
Technical Training ◽  
Functional Training ◽  
Inductive Approach ◽  
Direct Observations ◽  
Qualitative Descriptive ◽  
And Training ◽  
Descriptive Method

Effectiveness of Education and Training in Increasing Auditor Performance at the Lamongan Regency Inspectorate of East Java Province. This study aims to find out and analyze education and training to be the driving factors for improving the performance of auditors at the Inspectorate of Lamongan Regency, East Java Province. The researcher used a qualitative descriptive method with an inductive approach. The conclusion of this study is the effectiveness of education and training carried out through technical training programs held by the Lamongan District Inspectorate and the implementation of functional training and technical training outside which aims to improve the performance of the Lamongan District Inspectorate auditors, including being effective. This can be understood from the results of the overall study through interviewing the author with sources and direct observations. The indicators of effectiveness of auditor participation to carry out technical training carried out by the Inspectorate and functional training and technical training held outside of stating that, every implementation. Education and training can have a positive impact on the auditor of the Lamongan District Inspectorate in improving performance to carry out their duties and functions as internal government supervisors.

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