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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

   other informative estimators for stock abundance and productivity, the review and the simulations ... the Commission is able to achieve the objectives of Article II, notably maintaining stable ... abundance and productivity, the review and the simulations highlight that interpretation of raw length ... start date in year 01/12 Increments within year 12 Reasonable upper bound for annual F 5.0 ... to satisfy CCAMLR’s Article II in the long term. Maybe more promising are decision trees that ...

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

2. The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   by mesopelagic fish in the Atlantic sector of the Southern Ocean. It is clear from this review that ... fish in the Atlantic sector of the Southern Ocean. It is clear from this review that fish are ... resources in the Southern Ocean 70% of the total biomass of krill is concentrated between 0° and 90°W. 87 ... total pro- duction (Atkinson et al., 2008). The last estimate of krill biomass in the Southern Ocean ... spp.) in the 19th cen- tury and the large baleen whales in the first 80 years of the 20th century ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Автор(ы): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams

3. Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia

   , although details of catches prior to that date have neither been published nor made available to the ... during the meeting of the CCAMLR Scientific Committee's Working Group on Fish Stock Assessment (WG-FSA ... (1990) and this was considered in detail at the WG-FSA meeting by Sparre (1989). Pending the provision ... information on the analyses undertaken. Although mentioned in the WG-FSA report, no discussion is reported ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 245–257 : Автор(ы): Everson, I

4. Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses

   marine organisms at higher trophic levels through multivariate analyses. This is because the FA pro ... , 1987; Michener and Schell, 1994). δ13C in an animal usually occurs within 1‰ compared with that of ... FAME classes. Nitrogen was used as a carrier gas. The GC temperature was pro- grammed from 50°C for 1 ... (CAMLR Convention text, Article II principle b) and is generally known to feed on a wide range of prey ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Автор(ы): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*

5. A study of Patagonian toothfish (Dissostichus eleginoides) post-tagging survivorship in Subarea 48.3

   , 396 animals were included, with an overall survivorship of 90%. Smaller animals and animals in better ... -tagging survivorship of 95% or more. An assumption of 90% post-tagging survivorship is a conservative ... oo d 2a ve ra ge 3p oo r fish.length.cm s( fis h. le ng th .c m ) 60 70 80 90 100 -5 0 ... ( fis h. le ng th .c m ) 60 70 80 90 100 -5 0 5 days.after.1.June s( da ys .a fte r. 1. Ju ... an overall survivorship of 90%. Smaller animals and animals in better initial condition had a higher ... more. An assumption of 90% post-tagging survivorship is a conservative value which might be ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 279–289 : Автор(ы): Agnew, D.J., J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones, G. Breedt, S. Du Plessis, J. Van Heerdon and G. Moreno

6. Joinville–D’Urville Islands (Subarea 48.1) – a former fishing ground for the spiny icefish (Chaenodraco wilsoni), at the tip of the Antarctic Peninsula – revisited

   , sparse, being restricted to the two seasons (1978/79 and 1979/80) when Polish and GDR vessels fished in ... the southern Scotia Arc region – a review and pro spects for future research. Rev. Fish Res. (in ... , being restricted to the two seasons (1978/79 and 1979/80) when Polish and GDR vessels fi shed in the ... qui se limitent aux deux saisons de pêche (1978/79 et 1979/80) des navires polonais et de la RDA dans ... скудной и ограничивалась двумя сезонами (1978/79 г. и 1979/80 г.), когда промысел в этом районе вели ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 1–20 : Автор(ы): Kock, K.-H., L. Pshenichnov, C.D. Jones, K. Shust, K.E. Skora and Zh.A. Frolkina

7. Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.

   - erty (referred for the remainder as the ‘tagged pro- portion’) can be used to obtain unbiased estimates ... of a simplified observational error pro- cess on estimates of M by effectively simulating the ,ξ iy ... 1975 to 2020 for which YCS was estimated. Candy 8 First a population age structure was generated ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Автор(ы): Candy, S.G.

8. Consideration of major issues in ecosystem monitoring and management

   10000 15000 0 10 20 30 40 50 60 70 80 90 100 Year Po pu la tio n si ze Recruitment fails twice ... 40 50 60 70 80 90 100 Year Po pu la tio n si ze Recruitment fails twice at random each decade ... major issues relevant to ecosystem monitoring and management within CCAMLR is recognition of Article ... II of the Con- vention, which is partly reproduced below: Article II, paragraph 3: Any harvesting ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Автор(ы): Everson, I

9. A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ

   waters when the French authorities are patrolling their EEZ. In the interests of providing some pro ... sensitivity tests are shown in Table 5, together with those for projections to 2010 and to 2020 under a ... essential. To date two aerial and one sea reconnaissance trips have been undertaken by South Africa, the ... su rv ey b io m as s = 1 2 00 23 1 42 28 6 49 -3 .3 43 80 8 0. 39 2 0. 00 ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Автор(ы): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller

10. Management and assessment options for the crab fishery around South Georgia

    Article I1 of the CCAMLR Convention. In the final section, we consider the assessment methodologies and ... together with the requirements of Article I1 of the CCAMLR Convention. The objectives in sub-paragraph 3 ... of Article I1 may be paraphrased as follows: (i) to prevent a decrease in the abundance of the ... objectives set out in Article I1 of the Convention (see 'The CCAMLR Convention') and could enhance the ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 193–202 : Автор(ы): Basson, M. and D.D. Hoggarth

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