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  Scientific, Technical and Economic Committee for Fisheries (STECF)
  Fisheries dependent information - classic (STECF-17-09) : addendum

  Latest edition.

  Following the closure of the FDI-classic EWG meeting, an error in beam trawl effort data for the year 2016 was notified by The Netherlands. Under normal the STECF data handling procedures for Expert Working Groups the database for this year would be considered final and no further uploads would ...

  Following the closure of the FDI-classic EWG meeting, an error in beam trawl effort data for the year 2016 was notified by The Netherlands. Under normal the STECF data handling procedures for Expert Working Groups the database for this year would be considered final and no further uploads would be permitted. However, because a) there are no plans to update the FDI-classic going forwards (and therefore no opportunity for the data error to be corrected in the next data call round) and b) the correct data were required to answer a specific request from the Commission to the STECF, corrected data from The Netherlands has been accepted into the FDI-classic database. As a consequence any table or figure in the EWG report making use of Dutch beam trawl effort data (including lpue and cpue results) will not match the final data made available through the data dissemination site. It is advised to refer to the data dissemination site if wishing to make use of the FDI data.

  • Published: 2018-01-09
  • Corporate Author(s): STECF ; Joint Research Centre (European Commission)
  • Subject: catch of fish, common fisheries policy, data collection, discarded fish, fishery management, fishery research, fishing area, fishing fleet, research report
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  Scientific, Technical and Economic Committee for Fisheries (STECF)
  Fisheries dependent information - classic (STECF-17-09)

  Latest edition.

  Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4–10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, f...

  Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4–10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, fisheries governance, ecosystem effects of fisheries, aquaculture or similar disciplines. The STECF reviewed the report of the EWG on Fisheries-dependent Information during its summer 2017 plenary meeting.

  • Published: 2017-10-20
  • Corporate Author(s): STECF ; Joint Research Centre (European Commission)
  • Subject: catch of fish, common fisheries policy, data collection, discarded fish, fishery management, fishery research, fishing area, fishing fleet, research report
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  Reports of the Scientific, Technical and Economic Committee for Fisheries (STECF)
  Evaluation of the landing obligation joint recommendations (STECF-17-08)

  Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4–10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, f...

  Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4–10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, fisheries governance, ecosystem effects of fisheries, aquaculture or similar disciplines. This report contains reviews of joint recommendations from Member States regional groups for the implementation of the landing obligation in 2018.

  • Published: 2017-10-10
  • Corporate Author(s): Joint Research Centre (European Commission)
  • Subject: catch of fish, common fisheries policy, conservation of fish stocks, fishery management, fishing regulations, quantity of fish landed, research report
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  A4a short research project
  Spatial effects on the stock dynamics of European Atlantic sardine stocks

  Under the scope of the a4a Initiative a workshop dedicated to studying spatial effects on the stock dynamics of European Atlantic sardine took place in Ispra, Italy, the 14th to the 18th of December 2015, with the objectives of (i) explore a4a methods to assess the Southern sardine stock (Atlant...

  Under the scope of the a4a Initiative a workshop dedicated to studying spatial effects on the stock dynamics of European Atlantic sardine took place in Ispra, Italy, the 14th to the 18th of December 2015, with the objectives of (i) explore a4a methods to assess the Southern sardine stock (Atlanto-Iberian stock) and compare the results with the current ICES assessment carried out with SS3; (ii) explore a4a methods to assess the Northern stock of sardine stock; and (iii) apply a4a to assess putative sub-stock units; discuss local depletion and mixing among sub-units of the stock. Sardine is fished mainly by UK, Netherlands France, Spain and Portugal across ICES areas VII, VIII and IXa. In France, Spain and Portugal sardine has significant social and economic importance to the fishing and canning industries. Sardine shows a complex population structure characterized by spatial heterogeneity in phenotypic characters and life-history traits. Evidence of spatial variability in dynamics does not preclude some fish mixing across the whole region, in agreement with both genetic homogeneity and the similarity in otolith element composition in larger fish. Current knowledge on sardine biology and dynamics is consistent with the hypothesis of a meta-population composed of three populations recruiting in the Bay of Biscay, off northern Portugal, and in the Gulf of Cadiz. The workshop looked into three options of spatial structures (i) current stock structure Bay of Biscay stock (BB; VIIIa,b) and Ibero Atlantic stock (IB; IXa and VIIIc); (ii) three separate sub-units Bay of Biscay, Northwest stock (NW; VIIIc, IXa-North to IXa-Central South) and South stock (S; IXa South); and (iii) a single stock. The a4a stock assessment model was used to estimate the dynamics of each sub-units in each option. To carry out the comparison across sub-units the models used were kept as similar as possible, to mitigate the effect that the choice of model can have on the final results. Uncertainty was estimated using MCMC with the ADMB implementation, which, in the most recent version, can be assessed through the FLa4a package. In the case of the overall stock, a sensitivity analysis about survey's data processing options was carried out, to investigate the robustness of the assessment results. For the Bay of Biscay a bayesian approach has also been implemented. In order to compare both methods (a4a and bayesian) a very simple separable model was selected. A visual evaluation of the consistency between the spatial hypothesis was done based on the SSB estimates, showing that both trends are remarkably similar until 2012, when they start to diverge. In 2012 the Iberian stock (sub-units NW and S) was at a very low level and the migration rates between the Iberian and the Bay of Biscay sub-units may have increased. In such case, the stock assessment model assumption of closed population is less likely to be maintained and the two estimates of SSB diverge. One of the advantages of the approach proposed is to make it possible to look into sub-units of the stock with regards to their productivity and exploitation. These results are shown as time series of fishing mortality and recruitment for each sub-unit.

  • Published: 2017-09-29
  • Corporate Author(s): Joint Research Centre (European Commission)
  • Subject: Atlantic Ocean, catch of fish, common fisheries policy, conservation of fish stocks, data collection, data processing, evaluation method, fishery management, fishing fleet, research report, sea fish, sea fishing, simulation
• Commission Implementing Regulation (EU) 2017/1345 of 18 July 2017 operating deductions from fishing quotas available for certain stocks in 2017 on account of overfishing in the previous years

  • Published: 2017-07-18
  • Corporate Author(s): Directorate-General for Maritime Affairs and Fisheries (European Commission) ; European Commission
  • Subject: catch of fish, catch quota, conservation of fish stocks, EU Member State, EU waters, fishing area, fishing rights, international waters, sea fish, sea fishing
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  Compilation and quality check of the ICES stock assessment data
  

  This document describes the compilation and quality checks of the ICES dataset to be used in the CFP indicators report....

  This document describes the compilation and quality checks of the ICES dataset to be used in the CFP indicators report.

  • Published: 2017-05-11
  • Corporate Author(s): Joint Research Centre (European Commission)
  • Subject: catch of fish, conservation of fish stocks, data processing, fisheries policy, fishery management, fishery research, research report, resources of the sea
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  Research for PECH Committee
  Socio-economic role and environmental impacts of recreational and subsistence fisheries in the EU

  No unanimous definition for Marine Recreational Fishing yet exists among European Member States. The following report recommends a common definition and a methodological approach to assess marine recreational fishing socioeconomic and environmental impacts. These recommendations are based on the...

  No unanimous definition for Marine Recreational Fishing yet exists among European Member States. The following report recommends a common definition and a methodological approach to assess marine recreational fishing socioeconomic and environmental impacts. These recommendations are based on the analyses of five representative examples in Europe on these issues. The methodology recommended by the authors is an economic impact assessment based on fishermen’s expenditures and catches, data collection by an on-line survey, adjusted and managed with a model based on input-output tables

  • Published: 2017-05-10
  • Corporate Author(s): BIPE ; Directorate-General for Internal Policies of the Union (European Parliament)
  • Subject: authorised catch, catch of fish, conservation of fish stocks, economic consequence, environmental impact, fisheries policy, fishery management, fishery resources, sea fish, social impact, sport fishing
• Commission Implementing Decision (EU) 2017/197 of 2 February 2017 amending Implementing Decision (EU) 2016/1138 as regards certain deadlines for the use of UN/Cefact standards in the exchange of information on fisheries (notified under document C(2017) 457)

  • Published: 2017-02-02
  • Corporate Author(s): European Commission
  • Subject: catch of fish, data transmission, disclosure of information, fishing controls, fishing fleet, fishing statistics, information network, maritime surveillance, ship's flag
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  Reports of the Scientific, Technical and Economic Committee for Fisheries
  Joint Recommendation for Natura 2000 under CFP Article 11 (STECF-16-24)

  Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4–10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, f...

  Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4–10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, fisheries governance, ecosystem effects of fisheries, aquaculture or similar disciplines. This report deals with Joint Recommendation for Natura 2000 sites under CFP Article 11.

  • Published: 2017-01-10
  • Corporate Author(s): STECF ; Joint Research Centre (European Commission)
  • Subject: Baltic Sea, catch of fish, common fisheries policy, data collection, environmental protection, EU waters, fishery management, fishery research, fishing area, fishing regulations, protection of animal life, research report, sea fish
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  Bioeconomic modelling for fisheries
  

  Current fisheries advice requires an increased consideration of bioeconomics and the interactions of fishing fleets with the biological stocks. This is particularly important when evaluating proposed multi-annual management plans. To achieve this, modelling tools need to be able to consider the ...

  Current fisheries advice requires an increased consideration of bioeconomics and the interactions of fishing fleets with the biological stocks. This is particularly important when evaluating proposed multi-annual management plans. To achieve this, modelling tools need to be able to consider the dynamics of individual fisheries. This becomes more challenging with mixed fisheries when multiple species are caught by multiple fleets. A suitable balance needs to be found between replicating the details of the complex fishery system and simplifying a model to the level that makes it tractable but still useful. Much of the bioeconomic fisheries modelling work performed at the JRC uses the FLR software framework (Kell et al., 2007). The JRC has developed a new FLR package, FLasher, for performing projections and forecasts with multiple individual fisheries and multiple species. This allows the dynamics of mixed fisheries to be more accurately modelled and allows the evaluation of the economic performance of alternative management decisions. This document presents some of the features and capabilites of FLasher using a case study based on a semi-realistic flatfish fishery: two fleets with different selectiviuty pat- terns, bottom trawl and gillnet, catching two species with different life histories and maximum sizes, European plaice (Pleuronectes platessa) and common sole (Solea solea) FLasher expands the current modelling capabilities of FLR, allowing the impacts of proposed management plans to be evaluated in greater detail by (1) explicitly modelling the dynamics of each individual fleets, which could be affected in different ways by management, (2) forecasting in parallel the full species and fleet assemblage found in mixed fisheries, and (3) employing the latest iteration of the C++ language and a new library for automatic differentation.

  • Published: 2017-01-05
  • Corporate Author(s): Joint Research Centre (European Commission)
  • Subject: authorised catch, catch of fish, common fisheries policy, conservation of fish stocks, fishery management, fishery research, fishing fleet, research report