Analysis of Open-Access Commercial Exploitation and Maximum Economic Yield in Biologically and Technologically Interdependent Fisheries

1975 ◽  
Vol 32 (10) ◽  
pp. 1825-1842 ◽  
Author(s):  
Lee G. Anderson
Keyword(s):  
Open Access ◽  
Graphical Analysis ◽  
Maximum Sustainable Yield ◽  
The Other ◽  
Sustainable Yield ◽  
Commercial Exploitation ◽  
Maximum Economic Yield ◽  
Biological Relationships

Fisheries may be interdependent because of biological relationships that exist between their stocks or because the gear of one affects mortality in the stock of the other. The problems of defining a maximum sustainable yield in these cases are discussed. A graphical analysis is used to describe the combinations of effort from both fisheries where concurrent exploitation is possible and which of these combinations will result in a simultaneous equilibrium. Finally the conditions for a combined maximum economic yield (MEY) are presented and it is shown that they will not hold if each fishery is managed to obtain an individual MEY.

scholarly journals PENGELOLAAN BERKELANJUTAN PERIKANAN TANGKAP WADUK CIRATA : MODEL BIO-EKONOMI

2016 ◽  
Vol 11 (2) ◽  
pp. 161
Author(s):  
Zuzy Anna
Keyword(s):  
Parameter Estimation ◽  
Open Access ◽  
Fisheries Management ◽  
Economic Model ◽  
Gompertz Model ◽  
Maximum Sustainable Yield ◽  
Policy Implications ◽  
Fishing Gear ◽  
Sustainable Yield ◽  
Maximum Economic Yield

Perikanan tangkap di waduk, merupakan potensi yang dapat diandalkan bagi pemenuhan kebutuhan hidup masyarakat sekitarnya, sayangnya kegiatan ini belum banyak mendapat perhatian pengelolaan. Terbukti dari masih sangat rendahnya kontribusi sektor perikanan tangkap waduk ini pada perekonomian daerah. Untuk digunakan sebagai basis pengelolaan, penelitian ini dilakukan untuk menganalisis  pengaruh aktivitas produksi (penangkapan) terhadap kondisi sumber daya ikan seperti parameter biologi dan rente sumberdaya perikanan pada kondisi aktual, lestari, dan juga optimal, dengan menggunakan model bio-ekonomi standard logistik dan Gompertz. Skenario model yang digunakan adalah analisis bio-ekonomi model logistik Gordon Schaefer (GS) dengan estimasi parameter algoritma Fox, dan model Fox/Gompertz dengan estimasi  parameter biologi seluruhnya algoritma CYP. Analisis perikanan tangkap dilakukan dengan menggunakan skenario rezim pengelolaan open access, Maximum Sustainable Yield (MSY) dan Maximum Economic Yield (MEY). Hasil penelitian menunjukan adanya overfishing dan overcapacity pada beberapa tahun pengamatan yang ditandai dengan adanya kelebihan effort baik pada Model GS maupun Gompertz. Pengelolaan dengan menggunakan rezim MEY memberikan nilai rente yang paling maksimum, dengan biomass yang lebih konservatif, dan  effort yang lebih efisien, baik pada model GS maupun model Gompertz. Implikasi kebijakan pengelolaan waduk melalui rasionalisasi jumlah alat tangkap. Model MSY mengisyaratkan rasionalisasi alat tangkap lebih sedikit dibandingkan model MEY, sementara Model Gompertz mengisyaratkan penurunan alat tangkap lebih tinggi dibandingkan model GS. Alternatif pembatasan output atau kuota output juga dapat dilakukan dengan menggunakan nilai JTB. Title: Sustainable Fisheries Management in Cirata Dam: Bio-Economic ModellingCapture fisheries in the dam is a potential that can be relied for the surrounding community subsistence. Unfortunately this activity has not received much attention management. This was evident from the very low dam fisheries contribution, to the regional economy. For the purpose of fisheries management in the dam, this study was conducted to analyze the effect of production activities, on the condition of fish resources such as biological parameters and fishery resource rents on actual conditions, sustainable, and optimally, using bio-economic model of standard logistic and Gompertz. The scenario model used is the analysis of bio-economic model of logistics Gordon Schaefer (GS) with the parameter estimation of Fox algorithm, and  Gompertz model  with algorithm CYP  for biological parameter estimation. Analysis of fisheries carried out by using a scenario of open access management regime, Maximum Sustainable Yield (MSY) and the Maximum Economic Yield (MEY). The results showed overfishing and overcapacity in several years of observation which is characterized by an excess of effort both on the GS model and Gompertz. Management using MEY regime provides the maximum possible value of rents, with biomass more conservative and more efficient effort, both on the GS model and the model of Gompertz. Policy implications reveal from the study is dam management through the rationalization of the number of fishing gear or boats. MSY model suggests rationalization of fishing gear less than the model MEY, while the Gompertz model implies a decrease in fishing gear higher than the GS model. Alternative output restrictions or quotas outputs can also be implemented by using the value of total allowable catch.

scholarly journals Fisheries Recources Status of Rasbora (Rasbora sp) in Rawa Pening, Semarang, Central Java: Bioeconomic Analysis

Agriekonomika ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 64
Author(s):  
Nopisari, Dian Ayunita NN. Dewi
Keyword(s):  
Open Access ◽  
Natural Resources ◽  
Secondary Data ◽  
Maximum Sustainable Yield ◽  
Primary Data ◽  
Sustainable Yield ◽  
Total Production ◽  
Maximum Economic Yield ◽  
Central Java

Rasbora (Rasbora sp) is natural resources which have potency to catch in Rawa Pening Swamp. Total production of rasbora was 11,930 kg in 2014. The research objectives to analyzed rasbora bioeconomic status with Maximum Sustainable Yield (MSY), Maximum Economic Yield (MEY), and Open Access (OA) indicators in Rawa Pening. Bioeconomic analysis for Rasbora used Gordon-Schaefer Model. Primary data obtained with census and the total respondents were 31 gillnet fishers. Primary data were gillnet efforts, price and cost of rasbora fishing. Secondary data used Rasbora (Rasbora sp) production for 10 years from 2003-2012. The result of Gordon-Schaefer model for Maximum Sustainable Yield produced of rasbora (CMSY) of 44,100 kg/year with fishing efforts (EMSY) 21,000 efforts/year. The Maximum Economic Yield status (CMEY) 35,916.08 kg/year with effort maximum (EMEY) of rasbora 11,953 efforts/year. Meanwhile, limitation of the rasbora production in Open Access Equilibrium (COAE) was 43,000 kg/year and effort maximum (EOAE) 23,766 efforts/year. Rasbora resources in Rawa Pening status is in underfishing condition.

scholarly journals OPTIMASI PEMANFAATAN SUMBERDAYA IKAN KARANG HIDUP KONSUMSI (LIFE REEF FISH FOR FOOD / LRFF) DI PERAIRAN KEPULAUAN SPERMONDE, SULAWESI SELATAN

2017 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Benny Osta Nababan ◽  
Yesi Dewita Sari
Keyword(s):  
Open Access ◽  
Reef Fish ◽  
Growth Function ◽  
Maximum Sustainable Yield ◽  
Production Model ◽  
Logistic Growth ◽  
Sustainable Yield ◽  
Maximum Economic Yield ◽  
Function Management ◽  
Resources Exploitation

Penelitian ini bertujuan untuk mengetahui tingkat pemanfaatan dan menentukan tingkat optimal pemanfataan sumberdaya LRFF di perairan Kepulauan Spermonde. Penelitian ini dilakukan di perairan Kepulauan Spermonde, Sulawesi Selatan. Penelitian ini menggunakan model surplus produksi dengan fungsi pertumbuhan logistik. Model pengelolaan dilihat dari rezim maximum economi yield, maximum sustainable yield dan open access. Hasil penelitian menunjukkan bahwa nilai biomas optimal pada rezim maximum economic yield (MEY) adalah 5.120 ton, tingkat produksi optimal adalah 1.047 ton dan jumlah effort (trip) optimal yang diperbolehkan adalah 284.792 trip. Pada rezim maximum sustainable yield (MSY) biomas, produksi dan upaya lestari adalah berturut-turut 4.154 ton, 1.107 ton dan 371.128 trip. Rezim akses terbuka biomas maksimum hanya 1.933 ton, produksi maksimum yang dapat diperoleh sebesar 790 ton dan jumlah trip maksimum yang diperbolehkan 569.584 trip. Rente ekonomi yang diperoleh jika menerapkan rezim MEY adalah Rp 41.587.148.882, rezim MSY adalah Rp 37.765.171.742 dan rezim open access adalah Rp.0. Pemanfaatan sumberdaya LRFF di Kepulauan Spermonde telah terjadi overfishing karena diketahui produksi aktual lebih tinggi daripada produksi optimal yang disarankan. Oleh karena itu diperlukan pengelolaan perikanan sumberdaya LRFF yang mengarah kondisi optimal agar dalam jangka panjang pemanfaatan sumberdaya LRFF tetap lestari. Tittle: Optimal Exploitation Of Life Reef Fish For Food (LRFF) In The Spermonde Islands Of South Sulawesi.This research aimed to understand about the LRFF resources exploitation rate and its optimal used in the Spermonde Islands. The research was conducted in Spermonde Island of South Sulawesi. This research was used surplus production model with logistic growth function. Management model of LRFF resources based on maximum economic yield, maximum sustainable yield and open access regimes. Results showed that optimal biomass, optimal production and optimal effort at maximum economic yield were obtained at 5.120 ton, 1.047 ton and 284.792 trip. Sustainable biomass, productions and effort at maximum sustainable yield were 4.154 ton, 1.107 ton and 371.128 trip. Maximum biomass, productions and effort at open access were 1.933 ton, 790 ton and 569.584 trip. Economic rent obtained if applying regime of MEY was Rp 41.587.148.882, regime MSY was Rp 37.765.171.742 and regime open access was Rp.0. Exploitation of LRFF at Spermonde Island had indicated over fishing, because actual productions was greater than optimal productions. Therefore, on optimal management of LRFF fisheries resource is required to ensure long-term sustainability of the LRFF

scholarly journals Future for Whales

Oryx ◽  
1974 ◽  
Vol 12 (5) ◽  
pp. 532-534
Author(s):  
Richard Fitter
Keyword(s):  
Maximum Sustainable Yield ◽  
The Other ◽  
Sustainable Yield ◽  
Sperm Whales ◽  
Annual Increment ◽  
Fin Whale ◽  
International Whaling Commission

Pie still remains in the sky as far as the hard-pressed fin whale is concerned, following the 26th meeting of the International Whaling Commission in London in June. But the sky has got perceptibly nearer. After the 1973 IWC meeting fin whaling stood to end in 1976; now it should end in 1975—provided the outcome of an Australian resolution is not denounced by Japan and Russia under the 90-day rule that makes the IWC so ineffective. The Australian resolution provided for a total moratorium on all protection stocks, defined as stocks whose annual increment does not maintain the population, so that the fin whale seems bound to be included. The other whales currently being hunted, the sei, minke and sperm whales, are still within the maximum sustainable yield, but there is every reason to fear that, if whaling continues, they too will have to be classed as protection stocks.

scholarly journals Analisis Potensi Sumberdaya Ikan Pelagis di Pantai Ciparage Jaya Kabupaten Karawang

2010 ◽  
Vol 4 (1) ◽  
pp. 43-52
Author(s):  
Pigoselpi Anas ◽  
Iis Jubaedah ◽  
Sopiyan Danapraja
Keyword(s):  
Maximum Sustainable Yield ◽  
Purse Seine ◽  
Sustainable Yield ◽  
Maximum Economic Yield

Penelitian bertujuan untuk mengetahui tingkat penangkapan maksimum lestari (Maximum Sustainable Yield) dan tingkat penangkapan yang maksimum secara ekonomis (Maximum Economic Yield) sumberdaya ikan pelagis di Pantai Ciparage Jaya. Metode yang digunakan dalam penelitian ini adalah metode survei dan wawancara. Satuan penelitian adalah unit penangkapan mini purse seine. Hasil penelitian menunjukkan tingkat penangkapan maximum lestari (MSY) ikan pelagis kecil di perairan Ciparage Jaya adalah 2.996.716,6 kg/th, dan tingkat penangkapan yang maximum secara ekonomis (MEY) adalah 2.876.299 kg/th. Tingkat penangkapan nelayan rata-rata 2.686.400 kg/th, berdasarkan potensi lestarinya (MSY) dan segi ekonomi (MEY) mendekati nilai optimum, sehingga tidak memungkinkan peningkatan upaya penangkapan dilakukan. Usaha (strategi) yang dapat dilakukan untuk meningkatkan taraf hidup keluarga nelayan adalah perbaikan dan peningkatan kualitas alat tangkap, sistem pasar yang dapat menjaga kestabilan harga, pengolahan ikan yang memberikan nilai tambah pada produksi perikanan, dan alternatif usaha budidaya.

scholarly journals Bioeconomic Analysisis of Long-Jawed Mackerel Fish (Rastrelliger sp) in Indramayu Regency

2020 ◽  
pp. 20-28
Author(s):  
Rizky Ferawati ◽  
Zuzy Anna ◽  
Iwang Gumilar ◽  
Achmad Rizal
Keyword(s):  
Open Access ◽  
Descriptive Analysis ◽  
Sustainable Use ◽  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Purse Seine ◽  
Survey Method ◽  
Total Production ◽  
Quantitative Descriptive Analysis ◽  
Maximum Economic Yield

Long jawed mackerel resources are resources that are open access and common resources. The activity of catch mackerel in Indramayu district is increasing every year. In 2018 total fish production was 8423 tons while in 2019 there were 9047 tons. The utilization of long jawed mackerel resources must be based on economic and biological aspects as well as planning a sustainable use of long jawed mackerel. This study aims to analyze the conditions, efforts, and actual production of bloating fishing activities that are sustainable and optimal in Indramayu, as well as providing input into the direction of appropriate input and output management in bloating fishing activities in Indramayu Regency. The study was conducted in December 2019 to January 2020. The method used in this study was a survey method using quantitative descriptive analysis. Sample included 100 patients (age range 15-65 years) with respondents were owner fishermen, crew members, and/or boat captains, respondents were fishing using payang and purse seine. The data analysis method used is Gordon Schaefer's bioeconomic analysis. The results of the study found that the recommended fishing effort was in Maximum Sustainable Yield (MSY) 100.061 trip conditions and total production of 9011 tons, Maximum Economic Yield (MEY) conditions 98.756 trips and total production of 9.009 tons, and Open Access (OA) conditions in 197.513 trips and total production of 4.638 tons. The condition of long jawed mackerel in Indramayu Regency has experienced biological overfishing and economical overfishing. The policy recommendation is a limited entry of 27.242 trips (MSY) to 28.547 trips (MEY). Presentation of the reduction in the number of payang and purse seine fishing gear fleets under the conditions of MSY was 58% and 91,3% while for the MEY conditions were 59% and 91,7%.

scholarly journals Implementing harvest strategies in Australia: 5 years on

2013 ◽  
Vol 71 (2) ◽  
pp. 195-203 ◽  
Author(s):  
Anthony D. M. Smith ◽  
David C. Smith ◽  
Malcolm Haddon ◽  
Ian A. Knuckey ◽  
Keith J. Sainsbury ◽  
...  
Keyword(s):  
Federal Government ◽  
Reference Point ◽  
State Level ◽  
Maximum Sustainable Yield ◽  
Commercial Fisheries ◽  
Sustainable Yield ◽  
Limit Set ◽  
Maximum Economic Yield ◽  
Harvest Strategy ◽  
Benefits And Costs

Abstract Smith, A. D. M., Smith D. C., Haddon, M., Knuckey, I., Sainsbury, K. J., and Sloan, S. 2014. Implementing harvest strategies in Australia: 5 years on. – ICES Journal of Marine Science, 71: 195–203. Australian Commonwealth fisheries are managed using a formal harvest strategy policy (HSP) introduced by the federal government in 2007. At the State level, a number of commercial fisheries are also managed under formal harvest strategies, but no overarching policy currently exists to guide their consistent implementation across jurisdictions. There have been 5 years of experience with implementation of the Commonwealth policy across the highly diverse array of commercial fisheries found in Australia. The HSP has an explicit target of maximum economic yield, and an explicit limit set at half the biomass that would support maximum sustainable yield. The policy also specifies an acceptable level of risk associated with falling below the limit reference point. We discuss the experience gained from implementing the HSP in Australia, including a number of challenges faced, and attempt to summarize the benefits and costs of implementing harvest strategies. Our view is that, overall, the benefits clearly outweigh the costs.

scholarly journals OPTIMASI PEMANFAATAN SUMBERDAYA PERIKANAN TANGKAP DI PERAIRAN KABUPATEN SAMBAS

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Saifullah Tatang ◽  
Munandar .
Keyword(s):  
Maximum Sustainable Yield ◽  
Sustainable Yield ◽  
Maximum Economic Yield ◽  
Sole Owner

 Wilayah Perairan Kabupaten Sambas merupakan bagian dari wilayah WPP Laut Cina Selatan.Terletak di bagian Utara Provinsi Kalimantan Barat dan merupakan pintu gerbang wilayah Perairan Laut Cina Selatan yang berbatasan dengan Perairan Negara Malaysia, Thailand dan Vietnam.Posisi ini memiliki implikasi positif dan negatif.Implikasi positif, yaitu memiliki akses pasar yang sangat luas bagi pemasaran produksi hasil perikanan, sedangkan implikasi negatifnya sebagai daerah penangkapan ikan yang rawan terhadap pencurian ikan tidak dapat terelakkan. Tujuan dari penelitian ini adalah Menganalisis tingkat produksi, upaya dan rente ekonomi optimal dari   sumberdaya perikanan di Perairan Kabupaten Sambas.Penelitiandilakukandengan metode surveidan digunakanpurposive sampling.Analisis datadigunakananalisisbio-ekonomi dengan model CYP, WH,SchnutedanAlgoritmaFox. Berdasarkan kondisi dilapangan dimana tingkat keuntungan atau rente aktual sebesar Rp 37.678,53 juta per tahun lebih kecil dari nilai rente optimal sebesar Rp 107.074,11 juta  pada kondisi pengelolaan sole owner atau maximum economic yield (MEY) dan sebesar Rp 107.073,95 juta per tahun pada kondisi pengelolaan maximum sustainable yield (MSY). Sedangkan pada sumberdaya ikan demersal keuntungan atau rente aktual sebesar Rp16.662,28 juta per tahun, yang lebih kecil dari rente optimalnya sebesar Rp 16.969,94  juta per tahun.Menurunya jumlah produksi hasil tangkap dan tingkat effort yang semakin tinggi, biaya yang dikeluarkan untuk melakukan aktivitas penangkapan sumberdaya ikan pelagis besar, ikan pelagis kecil dan sumberdaya ikan demersal tidak sebanding dengan hasil yang diperoleh.  Kata Kunci : pemanfaatan, perikanan tangkap, Kabupaten Sambas

scholarly journals Maximum sustainable yield, maximum economic yield and sustainability in fisheries

2020 ◽  
Vol 9 (1) ◽  
pp. 15-17
Author(s):  
Ernesto A Chávez
Keyword(s):  
Fisheries Management ◽  
Age Structure ◽  
Stock Assessment ◽  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Fish Stock ◽  
Sustainable Yield ◽  
Fishing Mortality ◽  
Maximum Economic Yield ◽  
Fish Stock Assessment

A brief review of the concept of Maximum Sustainable Yield (MSY) used in fisheries management is discussed. The convenience of assessing the exploited stocks with the aid of simulation is advised, because implies the possibility to analyze the age structure of the fishery in more detail, as compared to the traditional methods of fish stock assessment. Emphasis is given to the use of the MSY as limit reference point because as long as the Fishing Mortality or fishing effort required for that point is kept at lower values, the fishery will have a good chance to be sustainable. A mention of the Maximum Economic Yield is made, proposing its use a target for the management, because it is reached in general with lower F values then that for the MSY, and this way keeping the fishery in a healthy condition.

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