• 2019 Stock Assessments part 2: European fisheries for demersal species in the Adriatic Sea (STECF-19- 16).

      Bitetto, I.; Cikes, V.; Costantini, I.; Daskalov, G.; Isajlovic, I.; Ligas, A.; Mannini, A.; Mantopoulou, D.; Murenu, M.; Orio, A.; et al. (Publications Office of the European UnionLuxembourg, 2019)
      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 is from STECF Expert Working Group 19-16: 2019 stock assessments of demersal stocks in the Adriatic Sea from the meeting in Rome Italy from 14th to 20th October 2019. A total of seven fish species were evaluated for GSA 17, 18 and 19. The EWG reports age based assessments and short term forecasts for all seven stocks. The content of the report gives the STECF terms of reference, the basis of the evaluations and advice, summaries of state of stock and advised based on either the MSY approach for assessed. The report contains the full stock assessment reports for the seven assessments, and three exploratory assessments for deep-water rose shrimp for each GSA separately. Advice for deep-water rose shrimp is based on the combined stock, the report also contains the STECF observations and conclusions on the assessment report. These conclusions come from the STECF Plenary meeting November 2019.
    • Methods for supporting stock assessment in the Mediterranean (STECF-21-02).

      Simmonds, John; Bitetto, Isabella; Cikes Kec, Vanja; Guijarro, Beatriz; Isajlovic, Igor; Ligas, Alessandro; Mantopoulou Palouka, Danai; Mannini, Alessandro; Maynou, Francesc; Moutopoulos, Dimitrios; et al. (Publications Office of the European UnionLuxembourg, 2021)
      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, on methods for supporting stock assessment in the Mediterranean (STECF-21-02), addresses the data checking and preparation for stock assessment once the data has been submitted following the annual data calls. The report provides an overview of the data errors and quality control carried out on both commercial landings data and MEDITS survey data. The analyses reported also address the small fraction of commercial catch with sampling gaps, and how these are assigned appropriate length frequency distributions. The results of these check and assignments are provided by species, GSA and country. Quality checks were carried out on Medits data check consistency of the main reporting files and highlighting where data inconsistencies occurred. Additionally the total landings reported to the European Commission under the Black & Med-Sea data call, the Fisheries Independent Data call and the Annual Economic Report data call were compared at species aggregated to GSA. Some important differences were observed and these are reported. In addition the EWG reviewed a technical report on the sampling of commercial catch in the Greek Fisheries, the review and some suggested further work are included in this report.
    • Stock assessments in the Mediterranean Sea 2021 – Adriatic and Ionian Seas (STECF-21-15).

      Simmonds, J.; Bitetto, I.; Cikes Kec, V.; Daskalov, G.; Isajlovic, I.; Kupshus, S.; Mantopoulou, D.; Murenu, M.; Orio, A.; Pierucci, A.; et al. (European UnionLuxembourg, 2021)
      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 is from STECF Expert Working Group 21-15: 2021 stock assessments of demersal stocks in Adriatic, Ionian and Aegean Seas from the meeting held remotely from 18th to 22th October 2021. A total of 9 fish stocks were evaluated. One stock had prior advice from 2020 for 2021 and 2022, and this is reiterated here. Index advice for 2022 and 2023 is provide for one other stock. The EWG reports age based assessments and short term forecasts for 5 of the remaining 7 stocks and surplus production assessments for two stocks. The content of the report gives the STECF terms of reference, the basis of the evaluations and advice, summaries of state of stock and advised based on either the MSY approach for assessed stocks or the precautionary approach for category 3 based advice. The report contains the full stock assessment reports for the 7 assessments, the exploration of assessments and category 3 evaluations for the remaining five stocks. The report also contains the STECF observations and conclusions on the assessment report. These conclusions come from the STECF Plenary meeting November 2021.
    • Stock Assessments in the Mediterranean Sea – Adriatic, Ionian and Aegean Seas (STECF-20-15).

      Simmonds, J.; Bitetto, I.; Vania, C.K.; Daskalov, G.; Ligas, A.; Mantopoulou, D.; Murenu, M.; Orio, A.; Pierucci, A.; Ticina, V.; et al. (European UnionLuxembourg, 2020)
      The working group was held in remotely, from 12th to 20th Sept 2020. The meeting was attended by 14 experts in total, including two STECF member and two JRC experts. The EWG had two observers who attended part time. The objective of the Mediterranean Methodology EWG 20-15 was to carry out assessments and provide draft advice for stocks identified in the ToR supplied by STECF. An initial plenary session commenced at 09:30 on the first day. The ToRs were discussed and examined in detail. Stocks were allocated to participants based on expertise. An ftp repository was created ad-hoc to share documents, data and scripts and prepare the report. The stocks were evaluated by the GSA groups identified in the ToRs. Most of the work was concluded by Tuesday 20 Sept, after 7 full days of work, and some additional work at the weekend. Over the 7 working days plenary sessions were held each day to monitor progress and share results. The overall conclusions for each stock were discussed and finalized in plenary on the Tuesday.
    • Stock Assessments: demersal stocks in the western Mediterranean Sea (STECF-20-09).

      Simmonds, J.; Bitetto, I.; Certain, G.; Daskalov, G.; Panisello, M.G.; Guijarro, B.; Ligas, A.; Mantopoulou, D.; Martin, P.; Murenu, M.; et al. (Publications Office of the European UnionLuxembourg, 2020)
      The working group was held in remotely, from 7th to 18th Sept 2020. The meeting was attended by 21 experts in total, including three STECF members and four JRC experts. The EWG had two observers who attended part time. The objective of the Mediterranean Methodology EWG 20-09 was to carry out assessments and provide draft advice for stocks identified in the ToR supplied by STECF. An initial plenary session commenced at 09:30 on the first day. The ToRs were discussed and examined in detail. Stocks were allocated to participants based on expertise. An ftp repository was created ad-hoc to share documents, data and scripts and prepare the report. The stock assessments were evaluated by the by all participants. Most of the work was concluded by Tuesday 15 Sept, after 7 full days of work, and some additional work at the weekend. However, two stocks remained to be completed, this extra work was carried out largely by two participant with support from small subgroups. The WG met for a final session on Friday 18 Sept. to conclude the work on one stock. Following extensive trials the last stock could not be assessed with an analytic age based assessment and advice was based on the MEDITS index. Over the first 7 working days plenary sessions were held each day to monitor progress and share results. The overall conclusions for each stock were discussed and finalized in plenary on the Tuesday, though the last assessment was finalised on the following Friday, the last day of the meeting.
    • Stock Assessments: demersal stocks in the western Mediterranean Sea (STECF-21-11).

      Simmonds, J.; Bitetto, I.; Certain, G.; Farrè, M.; Panisello, M.G.; Guijarro, B.; Ligas, A.; Mantopoulou, D.; Martin, P.; Maynou, F.; et al. (European UnionLuxembourg, 2021)
      The working group was held in remotely, from 6th to 10th Sept 2021. The meeting was attended by 20 experts in total, including two STECF members and two JRC experts along with one observer. The objective of the Mediterranean Methodology EWG 21-11 was to carry out assessments and provide draft advice for stocks identified in the ToR supplied by STECF. An initial plenary session commenced at 09:00 on the first day. The ToRs were discussed and examined in detail. Stocks were allocated to participants based on expertise. An ad-hoc ftp repository was created to share documents, data and scripts and prepare the report. The stock assessments were evaluated by all participants. Following EWG 21-02 data preparation EWG data was available for assessments much earlier in the meeting, in all cases by Tuesday night. For stocks with assessment issues some sensitivity test were possible, but for DWRS in GSA 1,5,6,7 exploratory assessments were not fully concluded given time limitations. Over the week plenary sessions were held each day to monitor progress and share results. The overall conclusions for each stock were discussed and finalized in plenary on the Friday. After the main meeting it became apparent that the selected assessment for red and blue shrimp in GSA 1 had issues with the form of the model, the model was re-examined and details circulated to all EWG participants. A short 45minute plenary was held on Tuesday 21st and a revised assessment was agreed. This report contains this final assessment and advice based on it.