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1. Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia

   . This represents at least 0.1% of the total Bird Island population and a minimum of 0.4% of animals in ... removed from 170) during the 142 days of the 1988-89 pup-rearing season at Bird Island, South Georgia ... ) formed 59% of collars, nylon string (15%), fishing net (13%) and six other materials comprising the rest ... only on 19% of animals was the collar loose enough potentially to come off. The magnitude of the ...

   Meeting Document : CCAMLR-VIII/BG/05 : Author(s): J.P. Croxall, S. Rodwell and I.P. Boyd (United Kingdom)

2. Assessment of Patagonian toothfish (D. eleginoides) in Subarea 48.3

   Abstract:  Assessment of the Patagonian toothfish (D. eleginoides) in Subarea 48.3 indicates that ... the current status of the stock is at 51% of B 0. Spawning biomass has been increasing in recent years ... . Projections indicate that a constant catch of 2 600 tonnes in the 2017/18 and 2018/19 seasons would be ... consistent with the CCAMLR decision rule.   Author(s):  T. Earl and S. Fischer Title:  Assessment of ...

   Meeting Document : WG-FSA-17/53 : Author(s): T. Earl and S. Fischer

3. Nine years of tag-recapture in CCAMLR Statistical Subarea 48.3 – Part I: General data characterisation and analysis

   Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3. It describes the tagging procedure, the ... information gained about biology, growth and movement of Patagonian toothfish, and explains the overlap of ... tagging length distributions with those of the landed catch and survey data. The characterisation of tag ... recapture data from Subarea 48.3 shows that the tagging programme is successful in providing substantial ...

   Meeting Document : WG-SAM-14/35 : Author(s): M. Soeffker, C. Darby and R.D. Scott (United Kingdom)

4. An integrated stock assessment of Patagonian toothfish (Dissostichus eleginoides) in CCAMLR Subarea 48.4

   Abstract:  This paper describes an update to the CASAL assessment of Patagonian toothfish (D ... . eleginoides) in Subarea 48.4. The assessment data time series are updated with the observations for the 2014 ... /15 season and several minor changes to the assessment are made: revision of tagging and recapture ... retardation period. Stock projections indicate that the stock is in healthy condition and that an annual yield ...

   Meeting Document : WG-FSA-15/28 : Author(s): M. Soeffker, V. Laptikhovsky, T. Earl and C. Darby (United Kingdom)

5. Measures to avoid bias in abundance estimates of Dissostichus spp. based on tag-recapture data

   Abstract:  Using the simplest form of an abundance estimator using tag-recapture data, the Lincoln ... estimate. We also review the methods that have been used in CCAMLR tag recapture to program to mitigate ... against this bias, or to account for their effects in assessment models. In nearly all cases, examples of ... depredation rates are a priority for new tagging programs and tag-based assessments. Due to the complexity of ...

   Meeting Document : WG-SAM-12/23 : Author(s): D.C. Welsford and P.E. Ziegler (Australia)

6. Variation in echosounder calibration with temperature and some possible implications for acoustic surveys of krill biomass

   are to be conducted. In addition, the implications of temperature variation across a survey area for ... of factors including, fundamentally, accurate echo-sounder calibration. The Simrad EK500 scientific ... conditions, calibrated gain settings differ markedly from those applied in the Antarctic, even after ... calibration parameters were to be employed on survey around South Georgia, and no account were taken of the ...

   Meeting Document : WG-EMM-97/52 : Author(s): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.

7. Methodical aspects of a large-scale international krill survey in 2019: comments and proposals

   Abstract:  Methodical aspects of a large-scale international survey in 2019 are discussed in the ... context of stated objectives. The main sources of uncertainty in the results of the 2019 survey are shown ... . Author(s):  S. Kasatkina Title:  Methodical aspects of a large-scale international krill survey in 2019 ...

   Meeting Document : WG-EMM-2019/55 : Author(s): S. Kasatkina

8. Secretariat work in support of WG-EMM

   the past year in support of WG-EMM. The outcome of these tasks are outlined in table format. Where ... Abstract:  This paper summarises some of the main tasks which the Secretariat has undertaken over ... work in support of WG-EMM Approval:  Approved ... required, detailed information is provided in meeting papers Author(s):  Secretariat Title:  Secretariat ...

   Meeting Document : WG-EMM-01/6 : Author(s): Secretariat

9. Preliminary stock assessment of Rajiformes in statistical Subarea 48.3

   simple Petersen model estimation of the population trends. The bycaught Rajiformes in subarea 48.3 are ... CCAMLR longline fisheries. However, they form a major part of the bycatch and as such it is necessary to ... understand the effect of each fishery on the Rajiformes population. Here we describe biological information ... gained from the skate tag-release programme in statistical subarea 48.3 and use the tag recaptures for a ...

   Meeting Document : WG-FSA-14/48 : Author(s): M. Soeffker, V. Laptikhovsky, J. Ellis and C. Darby (United Kingdom)

10. A brief characterisation of Patagonian toothfish tag survival and tag detection in CCAMLR Statistical Area 48.3

    Abstract:  Mark-recapture data is a central element in the assessment of population size and ... growth and the stock assessment for Patagonian Toothfish (Dissostichus eleginoides) in CCAMLR subarea ... 48.3 relies on accurate tagging samples for its assessment. The bias in tagging survival and tag ... detection is assumed to be minimal in the model, but this assumption has not previously been tested; a ...

    Meeting Document : WG-FSA-13/29 : Author(s): M. Soeffker and R. Scott (United Kingdom)

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