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Commission pour la conservation de la faune et la flore marines de l'Antarctique

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  1. A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2013 random stratified trawl survey

    vicinity of Heard Island during April 2013. This paper provides a preliminary assessment of mackerel ... using standard CCAMLR methods. A large cohort of fish, estimated to be 3+, dominates the population in ... both abundance and biomass. Two scenarios for harvest are presented – a typical two year projection of ... the population, and a projection accounting for the fact that the abundant 3+ year class is likely to ...

    Meeting Document : WG-FSA-13/23 : Auteur(s): D.C. Welsford (Australia)

  2. A false positive in the CCAMLR tag overlap statistic arising from low catch volume and consequent limited sample size

    2013/14 the vessel Argos Georgia achieved a tag overlap statistic of 52% rather than the required ... minimum of 60% as specified in CM 41-01. A review of the data indicates that the number of fish tagged was ... of fish tagged did not match closely with that of the catch resulting in a the overlap statistic, as ... not a case of only small fish being tagged. The low tag overlap statistic is shown to be a sampling ...

    Meeting Document : WG-FSA-14/31 : Auteur(s): C. Darby (United Kingdom)

  3. Are we there yet? Evaluating and reporting progress towards a Representative System of Marine Protected Area across the CAMLR Convention Area

    Abstract:  In 2008, CCAMLR agreed that the establishment of a representative system of marine ... protected areas (RSMPA) by 2012 was a priority. This assessment shows that the Scientific Committee and ... Commission can be kept informed of progress towards this goal using a relatively short list of simple ... contributions towards a RSMPA, however we are not there yet. Establishment of the proposed MPAs in Domain 1 ...

    Meeting Document : WS-SM-18/14 : Auteur(s): D.C. Welsford

  4. Are we there yet? Evaluating and reporting progress towards a Representative System of Marine Protected Area across the CAMLR Convention Area

    Abstract:  In 2009, CCAMLR agreed that the establishment of a representative system of marine ... protected areas (RSMPA) by 2012 was a priority. This assessment shows that the Scientific Committee and ... Commission can be kept informed of progress towards this goal using a relatively short list of simple ... contributions towards a RSMPA, however we are not there yet. Establishment of the proposed MPAs in Domain 1 ...

    Meeting Document : WG-EMM-18/31 : Auteur(s): D.C. Welsford

  5. A proposal for large scale sampling of krill in the diet of predators across Area 48 to coincide with the CCAMLR synoptic survey

    Abstract:  There is a high degree of spatial and temporal variability in the population of ... variability requires a 'snapshot' of the krill population over the region (eg the CCAMLR B0 survey ... South Georgia krill in the diet of Antarctic fur seal Arctocephalus gazella show a good level of ... and March using a standard methodology. This data will he used to example the level of concordance ...

    Meeting Document : WG-EMM-99/33 : Auteur(s): K. Reid (United Kingdom)

  6. Spatial overlap of krill-dependent predators and krill fishery catches and a proposal for subdivision of catch limits in Subarea 48.1

    Abstract:  Progressing from Stage 1 to Stage 2 of a feedback management strategy requires a better ... appeared to be more stationary and did not respond as rapidly (or on as large a scale) to conditions that ... might affect the distribution of fishing effort.  A comparison of CEMP parameters from two years with ... from a single SSMU. We propose that 85,000 tonnes, based on observed overlap and likely impacts of such ...

    Meeting Document : WG-EMM-14/36 : Auteur(s): J.T. Hinke, M.E. Goebel (USA), M.M. Santos (Argentina), P.N. Trathan (UK), W.Z. Trivelpiece and G.M. Watters (USA)

  7. Preliminary assessment of mackerel icefish, Champsocephalus gunnari, in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in May–June 2006 using the Generalised Yield Model

    Abstract:  A survey of mackerel icefish, Champsocephalus gunnari, was undertaken in Division ... short-term annual yield in the 2006/2007 CCAMLR season. This paper provides a preliminary assessment of ... yield for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. A lack of ... evidence of strong year classes recruiting to the population has led to a significant decrease in the ...

    Meeting Document : WG-FSA-06/43 Rev. 1 : Auteur(s): D.C. Welsford (Australia)

  8. Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time

    acoustic system with a standard sphere. It presents the results of an extensive calibration of a Simrad ... EK500 scientific echo sounder with a 120 kHz sprit-beam transducer in a refrigerated 10m deep tank ... ), transmitted pulse length (0.1, 0.3, and 1.0 ms), target depth (0.8- 7.5 m), and time (149 days). A discussion ... -integration system in a deep tank, with system gain comparisons over standard sphere material, water ...

    Meeting Document : WG-KRILL-92/17 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)

  9. A comparison of densities and length distribution of the Champsocephalus gunnari stock in Subarea 48.3 between years 1994 and 1995

    determined by a search procedure yielding randomly selected clusters of stations located within the 50–150 ... ; 151–250 and 251–500 m depth strata. The cluster structure is considered as a nested factor in an ANOVA ... in a nested ANOVA and a paired t-test. Significant increases in density have been detected at all ... a probability function to mean densities should be improved, but their differences at replicated ...

    Meeting Document : WG-FSA-95/34 : Auteur(s): Marschoff, E., Calcagno, J., Gonzalez, B.

  10. A feedback management strategy for the krill fishery in Subarea 48.1

    Abstract:  We present a Stage-2 strategy for in-season feedback management (FBM) of the krill ... fishery in Subarea 48.1.  This strategy is a combination of two strategies that were separately proposed ... to the WG-EMM in 2015 and is based on a broad foundation of work undertaken to address a suite of ... action items specified by the WG-EMM.  A decision rule to adjust catches in groups of SSMUs (gSSMUs) is ...

    Meeting Document : WG-EMM-16/48 : Auteur(s): G.M. Watters, J.T. Hinke and C.S. Reiss

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E-mail: ccamlr [at] ccamlr [dot] org
Téléphone: +61 3 6210 1111
Fax: +61 3 6224 8744
Adresse: 181 Macquarie Street, Hobart, 7000, Tasmania, Australia

 

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