scholarly journals Impact of maximum sustainable yield-based fisheries management frameworks on rebuilding North Atlantic cod stocks

2014 ◽  
Vol 46 ◽  
pp. 15-25 ◽  
Author(s):  
P A Shelton ◽  
M J Morgan
Keyword(s):  
Fisheries Management ◽  
North Atlantic ◽  
Atlantic Cod ◽  
Maximum Sustainable Yield ◽  
Sustainable Yield

scholarly journals Food for thought: pretty good multispecies yield

2016 ◽  
Vol 74 (2) ◽  
pp. 475-486 ◽  
Author(s):  
Anna Rindorf ◽  
Catherine Mary Dichmont ◽  
Phillip S. Levin ◽  
Pamela Mace ◽  
Sean Pascoe ◽  
...  
Keyword(s):  
Fisheries Management ◽  
Single Species ◽  
Maximum Sustainable Yield ◽  
Social Benefits ◽  
Sustainable Yield ◽  
Average Yield ◽  
Operational Management ◽  
Operating Space ◽  
Management Advice ◽  
Safe Operating

Abstract MSY principles for marine fisheries management reflect a focus on obtaining continued high catches to provide food and livelihoods for humanity, while not compromising ecosystems. However, maintaining healthy stocks to provide the maximum sustainable yield on a single-species basis does not ensure that broader ecosystem, economic, and social objectives are addressed. We investigate how the principles of a “pretty good yield” range of fishing mortalities assumed to provide >95% of the average yield for a single stock can be expanded to a pretty good multispecies yield (PGMY) space and further to pretty good multidimensional yield to accommodate situations where the yield from a stock affects the ecosystem, economic and social benefits, or sustainability. We demonstrate in a European example that PGMY is a practical concept. As PGMY provides a safe operating space for management that adheres to the principles of MSY, it allows the consideration of other aspects to be included in operational management advice in both data-rich and data-limited situations. PGMY furthermore provides a way to integrate advice across stocks, avoiding clearly infeasible management combinations, and thereby hopefully increasing confidence in scientific advice.

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.

Impacts of historical warming on marine fisheries production

Science ◽  
2019 ◽  
Vol 363 (6430) ◽  
pp. 979-983 ◽  
Author(s):  
Christopher M. Free ◽  
James T. Thorson ◽  
Malin L. Pinsky ◽  
Kiva L. Oken ◽  
John Wiedenmann ◽  
...  
Keyword(s):  
Climate Change ◽  
Fisheries Management ◽  
Food Production ◽  
Maximum Sustainable Yield ◽  
Marine Fishes ◽  
Sustainable Yield ◽  
Food Provisioning ◽  
Temperature Dependent ◽  
Potential Food

Climate change is altering habitats for marine fishes and invertebrates, but the net effect of these changes on potential food production is unknown. We used temperature-dependent population models to measure the influence of warming on the productivity of 235 populations of 124 species in 38 ecoregions. Some populations responded significantly positively (n = 9 populations) and others responded significantly negatively (n = 19 populations) to warming, with the direction and magnitude of the response explained by ecoregion, taxonomy, life history, and exploitation history. Hindcasts indicate that the maximum sustainable yield of the evaluated populations decreased by 4.1% from 1930 to 2010, with five ecoregions experiencing losses of 15 to 35%. Outcomes of fisheries management—including long-term food provisioning—will be improved by accounting for changing productivity in a warmer ocean.

scholarly journals Potensi Lestari dan Status Pemanfaatan Ikan Kakap Merah dan Ikan Kerapu Di Selat Alas Propinsi Nusa Tenggara Barat

2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Didik Santoso
Keyword(s):  
Fisheries Management ◽  
Maximum Sustainable Yield ◽  
The State ◽  
Red Snapper ◽  
Sustainable Yield ◽  
Competitive Advantages ◽  
Lutjanus Campechanus ◽  
Fishing Villages ◽  
Key Word ◽  
Fish Catch

ABSTRAKUpaya untuk  pengelolaan perikanan tangkap yang berpijak pada konsep efisiensi untuk meraih keunggulan komparatif dan kompetitif adalah dengan menentukan status pemanfaaatan ikan, khususnya ikan yang bernilai ekonomi penting sebagai tahap awal. Tujuan dari penelitian ini adalah menentukan potensi dan status pemanfaatan ikan kakap merah dan ikan kerapu di  Selat Alas Propinsi NTB. Metode yang digunakan untuk menentukan tingkat pemanfaatan adalah dengan menggunakan potensi maksimum lestari dari  Schaefer. Penelitian dilakukan di desa-desa nelayan di sekitar Selat Alas Propinsi Nusa Tenggara Barat (NTB). Potensi lestari (MSY) ikan kakap merah sebesar sebesar 205,8 ton/tahun, sedangkan ikan kerapu sebesar 259,1 ton/tahun. Status pemanfaatan ikan kerapu sebesar (Ephinephelus sp) 197,2%  tergolong status over exploited. Sedangkan  ikan kakap merah (Lutjanus campechanus)  sebesar 65,7% berada dalam status moderately exploited. Kata kunci : Moderately exploited, Over exploited, Persamaan Schaefer, Selat Alas, Propinsi NTB. ABSTRACTFor fisheries management which is based on the concept of efficiency to achieve comparative and competitive advantages is to determine utilization status of fish catch, particularly fish of economically important. The aim of this study is to determine utilization and potentian status of grouper and red snapper fish in the Alas Strait of West Nusa Tenggara Province. The method has been used to determine the level of utilization of fish by using the maximum sustainable yield of Schaefer.The study was conducted in the fishing villages around the Alas Strait West Nusa Tenggara Province. Sustainable yield (MSY) of grouper (Ephinephelus sp) is 259,1 ton/year, while red snapper (Lutjanus campechanus)  is 205,8 ton/year. Utilization status grouper (Ephinephelus sp) is 197,2 in the state of  over exploited. While the utilization of status of  red snapper (Lutjanus campechanus) is 65,7% in the state of  moderately exploited. Key Word : Alas Strait, NTB Province, mayor fish catch, moderately exploited, over exploited, Schaefer Equation.

Maximum Sustainable Yield of Marine Capture Fisheries in Developing Archipelagic States—Balancing Law, Science, Politics and Practice

2008 ◽  
Vol 23 (1) ◽  
pp. 1-37 ◽  
Author(s):  
Neil Andrew ◽  
Gail Lugten
Keyword(s):  
Fisheries Management ◽  
Fish Species ◽  
Ecosystem Approach ◽  
Maximum Sustainable Yield ◽  
Sustainable Yield ◽  
Legal Regime ◽  
The Law ◽  
Selection Of

AbstractThe contemporary legal regime for marine capture fisheries is dominated by management based on maximum sustainable yield (MSY). This study examines the law, science, politics and practice of MSY in a selection of developing archipelagic states to assess whether and how MSY is being used in the management of single fish species and as part of a broader ecosystem approach to fisheries management.

Legal Status of Maximum Sustainable Yield Concept in International Fisheries Law and Its Adoption in the Marine Fisheries Regime of Bangladesh: A Critical Analysis

2017 ◽  
Vol 32 (3) ◽  
pp. 544-569 ◽  
Author(s):  
Abdullah Al Arif
Keyword(s):  
Fisheries Management ◽  
Legal Status ◽  
Marine Ecosystem ◽  
Maximum Sustainable Yield ◽  
Sustainable Yield ◽  
Marine Fisheries ◽  
Policy Regime ◽  
Management Policies ◽  
Fisheries Law ◽  
International Fisheries

Abstract Maximum sustainable yield, popularly known by its acronym msy, is perhaps the most disputed concept in the realm of international fisheries law. The first part of this article briefly describes the genesis, development and subsequent adoption of the msy concept in international, regional and national fisheries management instruments. The second part documents the criticisms that the msy concept has generated to date and seeks to find out the legal status of the msy concept in international fisheries law. The third part of this article critically examines the adoption of the msy concept in the legal and policy regime for marine fisheries in Bangladesh. The article argues that more rigorous provisions for conservation of marine ecosystem should be incorporated in fisheries management policies of Bangladesh instead of solely relying on the msy concept as an objective of fisheries management.

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