1 / 26

Status of Mediterranean and Black Sea resources in European Waters in 2013

Status of Mediterranean and Black Sea resources in European Waters in 2013 Results for stocks in GSA 1-29 (Mediterranean and Black Sea) Max Cardinale* & Giacomo Chato Osio** *Chairman of STECF EWG MED ** EC JRC, Ispra, Italy. Status of Mediterranean and Black Sea resources

dara
Download Presentation

Status of Mediterranean and Black Sea resources in European Waters in 2013

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Status of Mediterraneanand Black Sea resourcesin European Waters in 2013 Resultsfor stocks in GSA 1-29 (Mediterranean and Black Sea) Max Cardinale* & Giacomo Chato Osio** *Chairman of STECF EWG MED ** EC JRC, Ispra, Italy

  2. Status of Mediterranean and Black Sea resources in European Waters in 2013 Guidelines for the evaluation of stock status • Terminology • Spawning stock biomass (SSB) is the biomass of the adult or reproducingfish • Fishingmortality (F) is the proportion of fish in the stock that are taken by the fisheries • FMSYis the F associated to high long term yields and the long-term sustainable exploitation of the stock • F/FMSYindicates how far each stock is from the MSY target

  3. Mediterranean and Black Sea stock assessmentunit

  4. Historical trend of the assessed stocks

  5. Stock status comparedto MSY target 1.00

  6. Stock status comparedto MSY target by year 1.00

  7. Stock status comparedto MSY target by GSA

  8. Stock status comparedto MSY target by GSA

  9. Stock status comparedto MSY target by GSA

  10. Stock status comparedto MSY target by groups

  11. Effort trends by GSA and country Unstandardized data from 2013 DCF datacall

  12. Effort trends by GSA and country Unstandardized data from 2013 DCF datacall

  13. Effort trends of otter trawlers Italy Greece Spain France Malta, Cyprus, Slovenia Unstandardized data from 2012 DCF datacall

  14. Stock status in the last assessmentyearcompared to MSY target STECF

  15. Stock status in the last assessmentyearcompared to MSY target STECF Around94% of the analysedMediterranean and Black Sea stocks are estimatedto be exploitedunsustainablyin 2010-2012

  16. Stock status in the last assessmentyearcompared to MSY target GFCM

  17. Stock status in the last assessmentyearcompared to MSY target GFCM Around95% of the analysedMediterranean and Black Sea stocks are estimatedto be exploitedunsustainablyin 2010-2011

  18. Modellingachievements STECF • Moving from XSA to statisticalcatch at age model (e.g. SS3) • Main advantages over classic VPA and other SCAA models: • Provide estimates of uncertainty • Can estimate M • Can provide different functionalresponse for selectivity • Can handlemultifleets

  19. Modellingachievements STECF

  20. Productivity and Susceptibility analysis 151 Mediterranean Demersal and bathydemersalfish stocks Productivity Attributes: • Maximum age (tmax) • Maximum size (Lmax) • Growth coefficient (k) • Natural mortality (M) • Fecundity • Age-at-maturity (tmat) • Mean trophic level Susceptibility attributes: • Areal overlap • Vertical overlap • Morphological characteristics affecting capture • Desirability or value of the fishery • Management strategy • Fishing mortality rate (in relation to M) • Survival after capture and release. From Hobday et al. 2007

  21. Species with estimated Mean Exploitation level

  22. IUCN Classification

  23. Status of Mediterranean and Black Sea marine resources • State of knowledge on the Mediterranean and Black Sea stocks is improving rapidly • Between 94% and 95% of the stocks analysed is overexploited compared to FMSY • An overall reduction between 45% and 51% in F is necessary to reach MSY • Reducing F will not reach MSY without changes in selectivity • Observedreduction in nominal effortdid not result in a decline in F State of the art

  24. Status of Mediterranean and Black Sea marine resources • Immediate actions • Reduce F for all demersal fisheries through reduction in effort or/and catches • Implement a TAC system for small pelagics • Modify gear selectivity to move towards MSY • Several stocks are shared fisheries/stocks with non EU contries and thus a strong coordination and collaboration between GFCM-SAC and SGMED is crucial in the future

  25. Status of Mediterranean and Black Sea marine resources Way forward • Move to stock integrated models which can estimate M, handle multifleet data and model selectivity

More Related