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1. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

   status and fishing mortality for long-lived fish species such as Patagonian toothfish (Dissostichus ... other informative estimators for stock abundance and productivity, the review and the simulations ... highlight that interpretation of raw length-frequency data and single length-based indicators for stock ... over two or three decades (Constable et al., 2000). At the core of this approach are rules for ... fishery operations for an assessment of the sta- tus and productivity of the fished stocks to estimate ... mortality for Patago- nian toothfish as an example of a long-lived fish species are illustrated. stock ... with stock abundance or a meaningful reference point must be known if they are used as an index for ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Auteur(s): Ziegler, P.E., D.C. Welsford and A.J. Constable

2. Birds: Trophic modelling of the Ross Sea

   methods. 1.2 Consumption Food consumption requirements for each species were estimated by two ... ; Schneider and Hunt 1982). These methods differed by less than 20% for all bird species. 1.3 ... small: less than 1–2 birds/year for the whole fishery. The numbers of birds killed by non-registered ... . For birds that breed in the Ross Sea study area, there will be an export of biomass from the study ...

   Document : Site Section: Publications

3. e-sc-xxiv-a7.pdf

   ... the Scientific Committee (SC-CAMLR-XXIII/BG/30) and later revised for publication. It discussed the ... special areas for protection and scientific study. 30. Under this provision, CCAMLR has used closed ... defined as an area of land and/or sea subject to active intervention for management purposes so as to ... announced during the next year. 76. Objectives for this MPA include reduction of IUU fishing, allowing application/pdf attached to:WS-MPA-05

   Meeting Report : WS-MPA-05

4. Fishery Report 2017: Champsocephalus gunnari Heard Island (Division 58.5.2)

   Increments in year 365 Years to project stock in simulation 2 Reasonable upper bound for annual F 5.0 ... level that would occur in the absence of fishing within the two years following an abundance biomass ... estimate, giving a two-year projection of the catch. In the assessment, a linear selectivity vector was ... open for fishing Chart illustrating area open (Annex 42-02/A) Catch limit 2018– 526 tonnes and 2019 ...

   Document : Site Section: Publications

5. Schedule of conservation measures in force 2014/15 – individual pdf files

   to provide for unforseen delays and besetment; (e) an approved 5 Shipboard Oil Pollution ... species and no more than 50 tonnes for an entire fishing trip by a vessel. 5 For the purposes of ... 10-04/A. When a vessel intends to enter a closed area, or an area for which it is not licensed to ... vessel in an area or subarea for which no license details have been provided by the Flag State to the ...

   Document : Site Section: Conservation and Management

6. e-sc-v-a4.pdf

   ... year for which catch-at-age data are available. If there is no clear average value for previous years ... M = 0.25 (probably an upper limit for a relatively long- lived fish), the average F on 9+ fish from ... on only one or two year-classes. It was concluded in the 1985 report that this stock was being ... . of C. gunnari, consist now of only one or two year-classes, and if year-class strength is highly application/pdf attached to:WG-FSA-86

   Meeting Report : WG-FSA-86

7. e-sc-xxx-a05.pdf

   ... Kim for his warm welcome, and MIFAFF and NFRDI for hosting the meetings. Later, during an initial ... Group noted Russia’s intention to produce an identification guide for crabs in the southern Atlantic ... further noted the three pieces of information required for an assessment of stock status and to apply the ... agreed that the highest priority for data-poor fisheries was to achieve an index of abundance, but that application/pdf attached to:WG-SAM-11

   Meeting Report : WG-SAM-11

8. A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem

   , together with suggested further areas for investigation. Amongst the key inferences of the study are that ... population trends without the need for recourse to environmental change hypotheses. A model is developed ... including krill, four baleen whale (blue, fin, humpback and minke) and two seal (Antarctic fur and crabeater ... krill, to explain observed trends – crabeater seals seemingly play an important role and constitute a ... – crabeater seals seemingly play an important role and constitute a particular priority for improved ... using Bayesian approaches yields an annual 7.3% (95% CI: 1.4–11.5%) increase for this species since ... reported an indication of the recovery of breeding stock C – east Africa. For breeding stock A (Brazil ... , a slight increasing trend is evident for the year classes from 1990. Direct observations of the age ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Auteur(s): Mori, M. and D.S. Butterworth

9. e-sc-xxx-a07.pdf

   ... for the 2011 season. 4.34 An analysis of the tagging performance of two Korean vessels fishing in ... that employed for previous years, noting that sampling effort was allocated to five areas and two ... + toothfish in the 2011 survey. 4.8 WG-FSA-11/30 Rev. 1 reported on an updated preliminary assessment of C ... -year study, with greater declines in catch rates from 2010 to 2011. Two years of mark-recapture data application/pdf attached to:WG-FSA-11

   Meeting Report : WG-FSA-11

10. e-sc-xxxii-a05.pdf

    ... establish an overall catch limit and spatial distribution of that catch limit for a period of several years ... -catch, as well as an analysis of notifications for the forthcoming season. As in a finfish Fishery ... dominated by two- and three-year-old krill (mode 35 mm). The largest krill were found in the deep water ... Working Group noted that these two surveys overlapped in areal coverage and therefore provided an application/pdf attached to:WG-EMM-13

    Meeting Report : WG-EMM-13

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