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WKEMBYC 2020 Draft Report WORKSHOP ON FISHERIES EMERGENCY MEASURES TO MINIMIZE BYCATCH OF SHORT-BEAKED COMMON DOLPHINS IN THE BAY OF BISCAY AND HARBOUR PORPOISE IN THE BALTIC SEA (WKEMBYC)–DRAFT REPORT VOLUME 2 | ISSUE 43 ICES SCIENTIFIC REPORTS RAPPORTS SCIENTIFIQUES DU CIEMDRAFT ICES INTERNATIONAL COUNCIL FOR THE EXPLORATION OF THE SEA CIEM CONSEIL INTERNATIONAL POUR L’EXPLORATION DE LA MER International Council for the Exploration of the Sea Conseil International pour l’Exploration de la Mer H.C. Andersens Boulevard 44-46 DK-1553 Copenhagen V Denmark Telephone (+45) 33 38 67 00 Telefax (+45) 33 93 42 15 www.ices.dk [email protected] DRAFT The material in this report may be reused for non-commercial purposes using the recommended cita- tion. ICES may only grant usage rights of information, data, images, graphs, etc. of which it has owner- ship. For other third-party material cited in this report, you must contact the original copyright holder for permission. For citation of datasets or use of data to be included in other databases, please refer to the latest ICES data policy on ICES website. All extracts must be acknowledged. For other reproduction requests please contact the General Secretary. This document is the product of an expert group under the auspices of the International Council for the Exploration of the Sea and does not necessarily represent the view of the Council. ISSN number: 2618-1371 I © 2020 International Council for the Exploration of the Sea ICES Scientific Reports Volume 2 | Issue 43 WORKSHOP ON FISHERIES EMERGENCY MEASURES TO MINIMIZE BY- CATCH OF SHORT-BEAKED COMMON DOLPHINS IN THE BAY OF BISCAY AND HARBOUR PORPOISE IN THE BALTIC SEA (WKEMBYC)–DRAFT REPORT Recommended format for purpose of citation: ICES. 2020. Workshop on fisheries Emergency Measures to minimize BYCatch of short-beaked common dolphins in the Bay of Biscay and harbour porpoise in the Baltic Sea (WKEMBYC) [Draft Report]. ICES Scientific Reports. 2:43. 344 pp. [Draft Version: DOI pending]. Editors Vincent Ridoux • Sara Königson • Kelly MacLeod Authors Matthieu AuthierDRAFT • Sophie Brasseur • Ida Carlén • Julia Carlström • Sarah Dolman • Peter Evans • Ruth Fernandez • Anders Galatius • Anita Gilles • Philip Hammond • Katarzyna Kaminska • Ailbhe Kavanagh Allen Kingston • Sara Königson • Sven Koschinski • Finn Larsen • Kelly Macleod • Estanis Mugerza Miriam S. Müller • Henn Ojaveer • Eva Papaioannou • Hélène Peltier • Graham Pierce • Christian Pusch Vincent Ridoux • Begoña Santos • Gudjon Sigurdsson • Stéphanie Tachoires • Morten Vinther • Adam Woźniczka ICES | WKEMBYC 2020 | III Contents i Executive summary ....................................................................................................................... v ii Expert group information ..............................................................................................................vi 1 Introduction ................................................................................................................................... 1 Review of ToRs ................................................................................................................. 2 Review of regulations (as from WGMME-2020) .............................................................. 3 Available documents ........................................................................................................ 5 Discussions ....................................................................................................................... 5 2 Baltic Sea harbour porpoise .......................................................................................................... 7 Review of annex II on Baltic harbour porpoise (from Annex II of NGOs request) ........... 7 Review of WGMME report (adapted from WGMME ToR E Report) ................................ 8 2.2.1 Management unit ............................................................................................................ 8 2.2.2 Abundance and status ................................................................................................... 10 2.2.3 Bycatches ....................................................................................................................... 10 2.2.4 Strandings ...................................................................................................................... 10 2.2.5 Mortality limit ................................................................................................................ 11 2.2.6 Other threats and pressures .......................................................................................... 11 2.2.7 Conclusions .................................................................................................................... 11 Review of WGBYC report (adapted from WGBYC ToR G Report) .................................. 12 2.3.1 Abundance, distribution and population structure ....................................................... 12 2.3.2 Characterisation of the Baltic Sea fisheries ................................................................... 13 2.3.3 Historical information on Baltic Harbour porpoise bycatches ....................................... 13 2.3.4 Bycatch data from 2006-2018........................................................................................ 14 2.3.5 Fisheries with potential for bycatch .............................................................................. 15 2.3.6 Effort analysis for the relevant fisheries ........................................................................ 15 2.3.7 DRAFTPopulation consequences of bycatch ............................................................................ 15 2.3.8 Evaluating the described conservation measures within the request ........................... 16 2.3.8.1 Technical mitigation measures to reduce bycatch ........................................................ 16 2.3.8.2 Designation of Marine Protected Areas for harbour porpoise ...................................... 17 2.3.9 Discussions and conclusions .......................................................................................... 18 2.3.9.1 Evaluating pressures and threats due to commercial fisheries bycatches to harbour porpoise in the Baltic proper ........................................................................... 18 2.3.9.2 Emergency measures proposed for harbour porpoise in the Baltic proper .................. 18 2.3.9.3 Appropriateness of the emergency measures proposed for Baltic harbour porpoise ......................................................................................................................... 19 WKEMB Discussions ....................................................................................................... 22 3 Bay of Biscay common dolphin session ....................................................................................... 24 Review of annex I on Biscay common dolphin (from Annex I of NGOs request) ........... 24 Review of WGMME report (adapted from WGMME ToR E Report) .............................. 25 3.2.1 Management unit .......................................................................................................... 25 3.2.2 Abundance and status ................................................................................................... 25 3.2.3 Bycatches ....................................................................................................................... 25 3.2.4 Strandings ...................................................................................................................... 26 3.2.5 Mortality limit ................................................................................................................ 27 3.2.6 Other threats and pressures .......................................................................................... 30 3.2.7 Conclusions .................................................................................................................... 30 Review of WGBYC report (adapted from WGBYC ToR G Report) .................................. 30 3.3.1 Abundance, distribution and population structure ....................................................... 31 3.3.2 Historical information on common dolphin bycatchs .................................................... 32 3.3.2.1 Areas and métiers with high common dolphin bycatch ................................................ 32 3.3.2.2 Bycatches between 1990-2000 ...................................................................................... 33 IV | ICES SCIENTIFIC REPORTS 2:43 | ICES 3.3.2.3 Bycatches between 2000-2012 ...................................................................................... 33 3.3.2.4 Recent bycatch rates ...................................................................................................... 34 3.3.3 Characterisation of the northeast Atlantic fisheries with potential for bycatch ........... 35 3.3.3.1 General overview of fishing effort in ICES 6, 7 & 8 ........................................................ 35 3.3.3.2 Spanish fleet characterization in ICES 8c ....................................................................... 35 3.3.3.3 French fleet characterization in ICES 8ab ...................................................................... 35 3.3.4 Estimation of common dolphin bycatch ........................................................................ 36 3.3.4.1 Analysis of WGBYC and strandings data used ...............................................................
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