CCAMLR

La pêcherie à la légine dans les ZEE de Kerguelen (division 58-5-1) et Crozet (division 58-6) est gérée par l’administration française compétente, les Terres australes et antarctiques françaises (TAAF). Cette dernière s’appuie sur les avis émanant de plusieurs institutions scientifiques, notamment du Muséum National d’Histoire Naturel (MNHN).
Dans le cadre de cet avis, le MNHN a notamment fait connaître ses préconisations pour limiter les prises accessoires de poissons non ciblés pour la campagne de pêche 2011-2012. Les prescriptions techniques fixées par l’administration ont été actualisées en prenant en compte cet avis.
Le présent document a pour objet d’informer les participants du contenu de ces prescriptions techniques. Ces dernières seront évaluées tout au long de la campagne 2011-2012 et, après étude des résultats obtenus en application de ces mesures, des objectifs chiffrés seront fixés pour réduire les captures accessoires de poissons lors de la campagne suivante.
Les attributions de quotas aux navires pêchant la légine dans les ZEE de Kerguelen (division 58-5-1) et de Crozet (division 58-6) sont fondées sur des critères objectifs d’évaluation de la performance des navires. Ces critères comprennent à la fois les aspects socio-économiques et l’antériorité de pêche, les efforts mis en œuvre par chaque navire pour réduire la mortalité aviaire, les initiatives en vue de préserver l’environnement et la capacité à pêcher son quota. Les résultats en matière de mortalité accidentelle représentent un des principaux facteurs d’évaluation des bateaux. A l’avenir, si les méthodes d’atténuation des captures accessoires démontrent leur efficacité, les navires seront également évalués en fonction de leur capacité à remplir des objectifs en matière de réduction des captures accessoires de poissons non ciblés.
Les Terres australes et antarctiques françaises ont introduit dans les prescriptions techniques encadrant la pêche à la légine dans les ZEE de Kerguelen et de Crozet (divisions 58-5-1 et 58-6) des mesures générales (paragraphe 1 ci-après) et des mesures spécifiques (paragraphe 2 ci-après). Les extraits pertinents de ces prescriptions techniques sont reproduits ci-dessous.
A l’issue de la campagne de pêche 2011-2012, l’analyse des résultats permettra de fixer des objectifs chiffrés en matière de diminution des captures accessoires de poissons dans les ZEE de Kerguelen (division 58-5-1) et Crozet (division 58-6).

As with the 2009 assessment of Subarea 48.3, there is still uncertainty as to why there were high numbers of the 2001 cohort in commercial catches in 2009 onwards.  It is likely that it is due to a combination of a strong 2001 cohort and a change in selectivity for the commercial fleet, but it has not been possible to determine the relative importance of each explanation.
Median log-normal recruitment suggests a long-term yield of 3 200 t.  If year class strengths have been low since 1994 and continue for the next 35 years then appropriate long -term yields could be as low as 975 tonnes.  This scenario is highly unlikely as survey data from 2010 and 2011 suggest a strong 2007 cohort, and survey data from 2004 to 2008 suggest a strong 2001 cohort.
Model projections, evidence of cohort strength from the surveys and the stabilisation of both SSB and CPUE that a long-term yield in the region of 2 000 tonnes would be appropriate, at least until catch-at-age data can confirm the strength of the 2007 cohort.
 

South Africans have been deployed as CCAMLR observers on vessels from a number of flag states. In some cases the observers have retained the otoliths that were collected and deposited them at the Branch Fisheries Management, Dept Agriculture, Forestry and Fisheries (DAFF) in Cape Town. As a result, South Africa holds otoliths collected from the CCAMLR area by vessels from five different flag states. This note summarises South Africa’s holdings of otoliths collected within the CCAMLR region by species, area, vessel and year.

This paper briefly outlines the key scientific issues that should be resolved for providing sufficient information with the aim of quantitative understanding regularities and trends of krill spatial distribution in the Scotia Sea being the important information for developing management strategy for krill stock in the Area 48. Proposals concerning scientific activity needed for resolving issues are shown. Practical implementation of these proposals will contribute to attaining CCAMLR goals in krill stocks management.  
 

The fish sampling protocol (K12 form) was developed to ensure that small/larval fish, that  may go undetected in larger samples, are recorded using a sorting method with a standard sub-sampling approach that allows the user to re-sort smaller samples and maximises potential to detect by-catch.
This paper uses data collected using the fish sampling protocol (K12) during 2010 and 2011 in order to estimate finfish by-catch in the krill fishery.

The information regarding by-catch of finfish in the krill fishery is limited and 2010 was the first year when the simplified sub-sampling method was used.  With more data from the upcoming season and greater observer coverage across the fishing fleet, better by-catch estimates should be able to be generated.
 

Summary of fishery-related information for WG-FSA including availability of data, catches of target and by-catch species in assessed and exploratory fisheries, tagging rates and the tag overlap statistic, notifications (fisheries, research and VMEs), development of species profiles and findings of the review of CCAMLR’s data management systems. Where applicable, the 2011 draft fishery reports and report on bottom fisheries and VMEs for WG-FSA have been updated with this information prior to the meeting.

Software is presented for the automated production of standardised image plots of spatially referenced bottom fishing impact assessments. This software is submitted to WG-FSA to assist the Secretariat or CCAMLR Working Groups in the production of integrated bottom fishing impact assessments, including routine update of the circumpolar impact assessment originally described in SC-CAMLR-XXIX/4, Appendix E.

The background to the current CCAMLR toothfish tagging programme is reviewed and recent performance measures implemented by CCAMLR to control and monitor the tagging of toothfish (Dissostichus species) in exploratory fisheries carried out within the Convention Area are described.  Following the first season of implementation we describe several circumstances which will cause anomalies in the tag overlap statistic used to monitor tagging performance.  These relate to differences in the length distribution of Dissostichus species within the assessed management division (ASD) or changes in the tagging rate within sub areas of the assessed ASD.  The current level of two tonnes of Dissostichus catch triggering the requirement to achieve a tag overlap statistic of 60% or more for upcoming season as specified in Annex 41-01/C is evaluated by means of simple simulations.  The results of this analysis indicate that at low levels of tagging, equating to between 2 and 10 t of Dissostichus catch, there is a strong likelihood that a breach of the Measure would occur.  We make recommendations from a user perspective on other aspects of toothfish tagging such as crew participation in the process, tag colour, training, and clarification of the controlling measures. We also recommend that the CCAMLR tagging protocol be updated and translated.