Report of the Thirty-Fourth Meeting of the Scientific Committee
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SC-CAMLR-XXXIV SCIENTIFIC COMMITTEE FOR THE CONSERVATION OF ANTARCTIC MARINE LIVING RESOURCES REPORT OF THE THIRTY-FOURTH MEETING OF THE SCIENTIFIC COMMITTEE HOBART, AUSTRALIA 19–23 OCTOBER 2015 CCAMLR PO Box 213 North Hobart 7002 Tasmania Australia _______________________ Telephone: 61 3 6210 1111 Facsimile: 61 3 6224 8766 Email: [email protected] Chair of the Scientific Committee Website: www.ccamlr.org November 2015 ________________________________________________________________________________________ This document is produced in the official languages of the Commission: English, French, Russian and Spanish. Copies are available from the CCAMLR Secretariat at the above address. Abstract This document presents the adopted report of the Thirty-fourth Meeting of the Scientific Committee for the Conservation of Antarctic Marine Living Resources held in Hobart, Australia, from 19 to 23 October 2015. Reports of meetings and intersessional activities of subsidiary bodies of the Scientific Committee, including the Working Groups on Statistics, Assessments and Modelling; Ecosystem Monitoring and Management; Fish Stock Assessment; and the Subgroup on Acoustic Survey and Analysis Methods, are appended. 1031-2889 Contents Page Opening of the meeting ...................................................................... 1 Adoption of agenda ......................................................................... 2 Chair’s report ............................................................................... 2 Advances in statistics, assessments, modelling, acoustics and survey methods ...... 2 Statistics, assessments and modelling ..................................................... 2 Acoustic survey and analysis methods .................................................... 6 Harvested resources .......................................................................... 8 Krill resources .............................................................................. 8 Fishery notifications, green weight estimation and gear library ..................... 8 Krill biology, ecology and management .............................................. 9 Current state of the krill-based ecosystem and the fishery ........................... 11 Feedback management .................................................................. 16 Further development and implementation of feedback management ............... 19 Integrated assessment model ........................................................... 20 Multinational coordination ............................................................. 20 CEMP .................................................................................... 21 Fish resources ............................................................................... 22 Status and trends ........................................................................ 22 Research priorities ...................................................................... 23 Toothfish released untagged............................................................ 23 Offal discharge .......................................................................... 24 VMS data quality assurance ............................................................ 24 Conversion factors ...................................................................... 25 Icefish assessments ...................................................................... 25 Champsocephalus gunnari Subarea 48.3 .......................................... 25 Management advice .............................................................. 26 Champsocephalus gunnari Division 58.5.2 ....................................... 26 Management advice .............................................................. 27 Toothfish assessments .................................................................. 27 Dissostichus eleginoides Subarea 48.4 ............................................. 27 Management advice .............................................................. 28 Dissostichus mawsoni Subarea 48.4 ................................................ 28 Management advice .............................................................. 29 Dissostichus eleginoides Subarea 48.3 ............................................. 29 Management advice .............................................................. 30 Dissostichus eleginoides Division 58.5.1 .......................................... 30 Management advice .............................................................. 31 Dissostichus eleginoides Subarea 58.6 ............................................. 31 Management advice .............................................................. 31 Dissostichus eleginoides Division 58.5.2 .......................................... 31 Management advice .............................................................. 33 Advice to the Commission ............................................................. 33 Role of fish in the ecosystem ........................................................... 33 Fish and invertebrate by-catch ............................................................. 33 Exploratory fisheries ....................................................................... 35 Dissostichus spp. Subarea 88.1 ........................................................ 36 Management advice ................................................................. 37 Catch limits for research surveys ...................................................... 37 Ross Sea shelf survey ............................................................... 38 Ross Sea winter survey .............................................................. 38 Other research activities in Subarea 88.1 .............................................. 38 Dissostichus spp. Subarea 88.2 ........................................................ 39 Proposed survey of SSRUs 882A–B north ........................................ 39 Survey in SSRU 882A south ........................................................ 40 Additional management proposals ................................................. 42 Research to inform current or future assessments in exploratory fisheries and other fisheries ........................................................... 44 General ............................................................................... 44 Fishery nomenclature and the regulatory framework .......................... 44 Streamlining the review of research plans ............................................ 45 Mark recapture data analysis ........................................................... 45 Provision of management advice in data-poor fisheries ............................. 46 Circumpolar D. mawsoni habitat model ............................................... 46 Dissostichus spp. Subarea 48.6 ........................................................ 46 Dissostichus spp. Divisions 58.4.1 and 58.4.2 ........................................ 47 Dissostichus spp. Division 58.4.3a (Elan Bank) ...................................... 48 Dissostichus spp. Subarea 48.2 ........................................................ 48 Dissostichus spp. Division 58.4.4a and 58.4.4b (Ob and Lena Banks) ............. 50 Dissostichus spp. Subarea 48.5 Weddell Sea ......................................... 50 Dissostichus spp. Subarea 88.3 ........................................................ 54 Incidental mortality .......................................................................... 54 Marine debris ............................................................................... 55 Spatial management of impacts on the Antarctic ecosystem ........................... 55 Bottom fishing and vulnerable marine ecosystems ...................................... 55 Marine protected areas ..................................................................... 56 Domain 1 the Western Antarctic Peninsula and South Scotia Arc .................. 56 Domains 3 and 4 the Weddell Sea ..................................................... 56 Approaches to MPA planning in the boundary region between Domains 1 and 3 ....................................................................... 59 Domain 8 the Ross Sea ................................................................. 59 Archiving of background information and data layers used in MPA planning processes .............................................................. 59 IUU fishing in the Convention Area ....................................................... 60 CCAMLR Scheme of International Scientific Observation ............................ 62 Krill observer coverage .................................................................... 62 New ID guide and observer training material ............................................ 65 COTPAS .................................................................................... 65 Climate change ................................................................................ 65 (ii) Scientific research exemption ............................................................... 69 Cooperation with other organisations ..................................................... 69 Cooperation with the Antarctic Treaty System .......................................... 69 CEP ....................................................................................... 69 SCAR .................................................................................... 70 Reports of observers from other international organisations