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1. A distribution-free model of length-frequency distribution to inform fishery stratification for integrated assessments

   Abstract:  Length frequency distributions (LFD) of catch collected as a random sub-sample from ... /or gear specific selectivity. A distribution-free model of LFD is described which is fitted to the ... set of length quantiles L for a predetermined set of corresponding probabilities P (in this instance ... 0.05, 0.1 to 0.9 in 0.1 increments, and 0.95), constructed from individual length measurements of ...

   Meeting Document : WG-SAM-13/18 : Author(s): S. Candy, P. Ziegler and D. Welsford (Australia)

2. A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09

   steadily increased over the first seven years of the fishery but has since stabilised at about 1000–1200 m ... Subarea 88.1 and for 8 years in Subarea 88.2. During that time a large amount of distributional and ... biological data has been collected on toothfish and the associated bycatch. The purpose of this report is to ... fishery which may be indicative of localised stock depletion. We considered here the catch limit, changes ...

   Meeting Document : WG-FSA-09/36 : Author(s): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)

3. Mitigation of Macrourus by-catch in research block 58.4.1_6 and estimation of Macrourus biomass and sustainable catch in Divisions 58.4.1 and 58.4.2

   effort is distributed across a range of depth strata (<1000, 1001–1500, 1501–2000 m) with at least 5 ... ) avoidance, ii) mitigation and iii) the setting of sustainable by-catch limits if mortality is not ... preventable (SC-CAMLR-XXII, paragraph 5.230). Here, we undertake a risk assessment of the effects of ... block 58.4.1_6 in particular. We investigate the distribution of D. mawsoni and Macrourus spp. catch ...

   Meeting Document : WG-FSA-17/23 : Author(s): D. Maschette, P. Burch, P. Yates and P. Ziegler

4. Line weights of constant mass (and sink rates) for Spanish-rig Patagonian toothfish longline vessels

   kg weights at 40 m intervals on longlines to minimise interactions with seabirds. The weights are ... collections of rocks enclosed in netting bags. The netting bags abrade on the seabed, rocks are lost and ... use of torpedo-shaped steel weights. Steel weights are smaller, lighter for equivalent mass, more ... chartered Spanish-rig longline vessel to determine the statistical relationship in sink rates of longlines ...

   Meeting Document : WG-FSA-07/15 : Author(s): G. Robertson (Australia), C.A. Moreno, E. Gutiérrez (Chile), S.G. Candy (Australia), E.F. Melvin (USA) and J.P. Seco Pon (Argentina)

5. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07

   years in Subarea 88.1 and for five years in Subarea 88.2. This report summarises the large amount of ... the second highest on record with a total of 3431 t against a combined catch limit of 3579 t. The ... management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3-year ... experiment (SC-CAMLR-XXIV). One of the aims of the experiment was to simplify the administration of the ...

   Meeting Document : WG-FSA-07/28 : Author(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)

6. Revised research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. with special reference to the information on spawning dynamics in Division 58.4.3a

   at the WG-FSA in 2013 in order to maximize the expectation of tag-recapture to the extent possible ... Abstract:  The current season (2014/15) is the final one of the first three-season research which ... numbers of tag recaptures from the estimated stock sizes using the Petersen method were generally ... results in other regions in the Southern Indian Ocean. The stock seems to be self-sustainable because of ...

   Meeting Document : WG-FSA-15/19 : Author(s): Delegation of Japan

7. THE RISKS OF NOT DECIDING TO ALLOCATE THE PRECAUTIONARY KRILL CATCH LIMIT AMONG SSMUS AND ALLOWING UNCONTROLLED EXPANSION OF THE KRILL FISHERY UP TO THE TRIGGER LEVEL

   risks associated with three options for a Stage-1 allocation of the precautionary krill catch limit ... among SSMUs in Subareas 48.1-48.3, it was suggested that a comprehensive assessment of the risks that ... might be incurred by not deciding on such an allocation (i.e., a risk assessment of status quo ... results provided from multiple parameterizations of the same model, and present such a risk assessment ...

   Meeting Document : WG-EMM-09/12 : Author(s): G.M. Watters (USA), S. Hill (United Kingdom), J.T. Hinke (USA) and P. Trathan (United Kingdom)

8. Assessment models for Patagonian toothfish in research block 5843a_1 of Division 58.4.3a, Elan Bank

   Abstract:  I made two sensitive runs of CASAL catch at length models (LENGTH_MODEL) for stock ... status assessments of Dissostichus eleginoides in research block 5843a_1 in Division 58.4.3a for the ... comprised of two fisheries split by depths of 1 200 m as the model in WG-SAM-14/17.  Number of longlines was ... between the two models were set as follows: year class strength (YCS) was fixed; parameters of ALK were ...

   Meeting Document : WG-FSA-14/22 : Author(s): K. Taki (Japan)

9. e-sc-xxv-a4-appD.pdf

   ... Requested model incorporations .......................................................... 230 Status ... REVIEW OF PARAMETER PLAUSIBILITY AND SENSITIVITY .................... 232 Requested model ... /35, 06/38 Rev. 1 and 06/39. STATE OF MODELLING Requested model incorporations 2.1 WG-EMM-05 ... (iii) a threshold krill density below which a fishery will not operate. 2.2 WG-EMM-05 requested ... , predators, environment and fishery in Area 48 (spatially resolved at the scale of the SSMUs and temporally ... the workshop can be partly achieved by considering the distribution of catches at the SSMU scale ... . An ecosystem aggregate value of zero suggests that at least one ecosystem component is not meeting ... e-sc-xxv-a4-appD.pdf LAYOUT OF CCAMLR DOCUMENTS AND application/pdf attached to:WMP-06

   Meeting Report : WMP-06

10. Fisheries risks to the population viability of black petrel (Procellaria parkinsoni)

    Abstract:  Data on the main population of black petrel (Procellaria parkinsoni), which breeds on ... Great Barrier Island, were analysed. Three types of data were available. The most useful was abundance ... data, from which it was possible to infer that the population was probably increasing at a rate between ... population. The mean age of first breeding for black petrel is estimated to be 6.7 y. Before this, new adults ...

    Meeting Document : WG-SAM-10/P01 : Author(s): R.I.C.C. Francis and E.A. Bell (New Zealand)

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