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1. Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study

   after 12 years of study Abstract / Description:  Demographic parameters (age-specific survival rates ... Demographic parameters (age-specific survival rates, fecundity levels and population numbers) were ... in eastern Antarctica after 12 years of monitoring under the CCAMLR Ecosystem Monitoring Program (CEMP ... Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years ... probabilities of detection (>90% of penguins that survive to 6 years of age have been resighted by age 4 years ... since Adélie penguins elsewhere have been shown to live up to 20 years of age (Reid, 1968; Ainley et ... in female Adélie penguins fi rst occurs between 3 and 7 years of age and fecundity is known to increase ... with age up to 7 years (Ainley et al., 1983). The mean number of chicks crèched per breeding female aged ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Author(s): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry

2. Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments

   (approximately 80 mg Sr per kg of fi sh) to mark their otoliths for later verifi cation of the age- reading ... nd s an d th e m ov em en ts o f t ag ge d fi sh b et w ee n th em . O ce ... . Such results serve as a useful check on the von Bertalanffy growth parameters calculated from age and length ... is proportional to the vulnerability to fi shing of that size class. Consequently, every released fi sh is aged ... for the management of toothfish stocks and that trends in abundance derived from these experiments ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Author(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb

3. Fishery Report 2018: Dissostichus eleginoides Kerguelen Islands French EEZ (Division 58.5.1)

   Description / Abstract:  Fishery Report 2018: Dissostichus eleginoides Kerguelen Islands French ... Fishery Report 2018: Dissostichus eleginoides Kerguelen Islands French EEZ (Division 58.5.1) ... Fishery Report 2018: Dissostichus eleginoides Kerguelen Islands French EEZ (Division 58.5.1) ... , weight, sex and maturity stage as well as collection of otoliths for age determination of the target ... be valid for the stock in Division 58.5.1. Age-specific data from Kerguelen otolith sampling are available ... with aged data in the 9 model. The Working Group noted that as the amount of age data in the model ... 4 6 3 2 1 90 2008 1629 4 10 5 85 58 55 37 16 12 7 9 5 393 2009 4367 42 114 118 96 94 50 30 23 17 7 591 ...

   Document : Site Section: Publications

4. Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia

   to set a two-year total allowable catch (TAC). One issue is the accurate identification of age cohorts ... model (GYM) packages, which derives population numbers-at-age and projects these numbers forward under ... identification of age cohorts from the survey data. In this paper a length-based approach is described ... . A comparison of this method and the existing age-based CMIX/GYM methodology showed very good agreement ... -year TAC), will be in a length- not an age-structured paradigm. In such a length-based assessment ... , not age. With length- based models, animals make transitions between elements of the length-partition ... density-at-age. To fully explore the potential utility of the pro- posed method as a new assessment ... 2+ animals with considerable uncertainty in the age structure generated by CMIX (SC-CAMLR, 2008 ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Author(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew

5. e-sc-viii-a4.pdf

   ... ) The analytical procedures suggested above should be conducted on a trial basis and reviewed after three years ... on the number and size of krill concentrations. 20. The Workshop developed an operational classification ... 7 to 13 June 1989. 30. The Convener of the study, Dr J. Beddington (UK) chaired the meeting ... to be used and the consequent requirements for routine data collection in the krill fishery. REVIEW ... number and size of krill concentrations. 20. The Workshop developed an operational classification of ... Committee (SC-CAMLR-VII, paragraph 2.41): (i) to provide an opportunity for detailed and final ... consequent requirements for routine data collection in the krill fishery. REVIEW OF CONSULTANTS’ REPORTS ... used for positioning to commence the haul. The simulation study results thus reflect an application/pdf attached to:WS-KCPUE-89

   Meeting Report : WS-KCPUE-89

6. Fishery Report 2018: Exploratory fishery for Dissostichus mawsoni in Subarea 88.1

   Description / Abstract:  Fishery Report 2018: Exploratory fishery for Dissostichus mawsoni ... Fishery Report 2018: Exploratory fishery for Dissostichus mawsoni in Subarea 88.1 ... Fishery Report 2018: Exploratory fishery for Dissostichus mawsoni in Subarea 88.1  ... selected for ageing each year, and used to construct annual area-specific age– length keys (ALKs ... rates (Pinkerton et al., 2013). Macrourus whitsoni approaches full size at about 10–15 years of age ... as collection of otoliths for age determination of the target and most frequently taken by-catch species ... et al. (2008). A multidisciplinary approach incorporating otolith microchemistry, age data ...

   Document : Site Section: Publications

7. An index of per capita recruitment

   recruitment (PCR) is proposed such that where R 1 is the proportion of age-l animals sampled in year ... that: (i) post-recruit mortality does not vary over age or between years; (ii) 100% of age-l animals spawn; (iii ... to recruits per spawner when mortality is constant over all ages and years, and when all age-l animals spawn ... years; (ii) 100% of age-l animals spawn; (iii) a representative sample of the population is available ... is the proportion of age-l animals sampled in year y and M is the post-recruit mortality rate. The intent ... or between years; (ii) 100% of age-l animals spawn; (iii) a representative sample of the population ... is constant over all ages and years, and when all age-l animals spawn. These conclusions are insensitive ... spawn and to 0.266 if no age-2 animals spawn. Age7 219.36 Year-to-year random variability ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Author(s): Hewitt, R

8. Surface water masses, primary production, krill distribution and predator foraging in the vicinity of Elephant Island during the 1989-90 austral summer

   was found to have a different age, sex and size distribution than that found in net samples, implying fine ... was found to have a different age, sex and size distribution than that found in net samples, implying fine ... of chinstrap penguins and over 80% of the diet of fur seals throughout the observation period. Fur seals ... , but at different distances (18-100 km for fur seals, 20-35 km for macaroni penguins, 11-24 km for chinstrap ...

   Meeting Document : WG-CEMP-90/11 : Author(s): A.F. Amos, J.L. Bengtson, O. Holm-Hansen, V.J. Loeb, M.C. Macaulay and J.H. Wormuth (USA)

9. WG-FSA-17

   and P. Ziegler WG-FSA-17/15 An update on the ageing of Antarctic toothfish, Dissostichus mawsoni, from East ... L. Wei and G.P. Zhu WG-FSA-17/66 Update of ongoing work on age and growth of Antarctic toothfish ... and their biological characteristics in Statistical Subareas 48.1 (northern part) and 48.2 (2018–2020) Delegation ... 2017) WS-SISO Convener (J. Moir Clark (EU)) SC-CAMLR-XXXVI/20 The Ross Sea region Marine Protected Area ...

   Meeting

10. e-cc-ix-a8.pdf

    ... e-cc-ix-a8.pdf CC90ann8.doc ANNEX 8 REPORT ... raised by SCAR, nor would he have the benefit of hearing the Standing Committee’s discussion. A number ... OF INSPECTIONS CARRIED OUT IN 1989/90 5. The Committee considered reports of an inspection conducted ... regulations. USSR inspectors had been designated and trained to undertake CCAMLR inspections in the 1989/90 ... an informal paper suggesting draft guidelines for inspections. This was noted but it was agreed ... Rules of Procedure. Japan expressed the view that the Rules of Procedure provided for restricted ... sessions for discussion of certain issues. They believed the question of observation and inspection ... , especially with regard to an individual case of inspection, was one such issue, and requested that Agenda application/pdf attached to:SCOI-90

    Meeting Report : SCOI-90

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