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1. Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass

   5, is a single calculation of the spawning biomass in a population with a deterministic age structure based ... multiple random determinations of a pre-exploitation age structure (the number of determinations is able ... age structures to estimate S,,. Two types of comparisons are made. In the first case ... for 20 years and 30 years were undertaken for all combinations of y and fishing season. The results ... method for correcting this bias in the level of escapement. The GYM uses an unbiased estimate of the ... for estimating yields according to decision rules that relate spawning stock status to the median ... unexploited spawning biomass. These models are used in order to account for uncertainty in the biological ... model as a basis for setting catch limits in the krill fishery, while the GYM is used for assessing ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Author(s): Constable, A.J. and W.K. de la Mare

2. Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set

   20°-90° O. Cinq groupes de donnees du navire de recherche Professor Siedlecki pour 1986 dans la ... . TIoTeHllMaJIbHOe pacnpe,lleJIeHMe TeMnepaTYPbII COJIeHOCTM ,llJI.H pafloHa no 50°-65° 10. ill. M 20°-90° 3.,ll ... ° S y 20°-90°0. Cinco agrupamientos de los datos de 1986 recogidos por el B/I Professor Siedlecki en la ... soit une caracteristique ecologique importante liee a cette abondance. Pe3IOMe HeB~aneKe OT ... ): an intrusive layer of Pacific derived relatively warm-salty water near 300 meters depth and deeper ... speculated that mixing of Weddell and Pacific waters near the tip of the Antarctic Peninsula is an important ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 161-184 : Author(s): Gordon, A.L.

3. Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides

   Paper Title:  Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides ... -at-age data derived from research cruises may provide an alternative to other methods of estimating ... Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides ... model assumptions. This paper demonstrates that for the new fishery, analyses using catch-at-age data ... ); and • fishing mortality is separable by age (Doubleday, 1976). Catch-at-age for all recruited year classes ... survey duration (in years) R = recruitment t r = age at recruitment t m = terminal age L\ = time ... at ages greater than 12. This raises doubts about estimates of M and Z obtained from catch curves ... 4 5 6 7 8 9 Tableau 1: Ta6JIHl.(a 1: Tabla 1: to = - 0.477 years Woo = 97.153 kg Catch Age Catch Age Catch ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Author(s): Zuleta, A.V. and C.A. Moreno

4. Breeding numbers and success of Eudyptes penguins at Marion Island, and the influence of mass and time of arrival of adults

   chrysolophus) over 26 years, as there was also for eastern rockhopper (E. chrysocome filholi) over 22 years ... at study colonies of macaroni penguins (Eudyptes chrysolophus) over 26 years, as there was also for eastern ... rockhopper (E. chrysocome filholi) over 22 years, suggesting that overwintering conditions may influence ... , breeding success aver- aged 0.57 ± 0.17 chicks/pair at Van den Boogaard River, 0.46 ± 0.13 at Archway Bay ... (Figure 1), in each sea- son from 1979/80 to 2004/05, as close as possible to 20–24 November, when most ... d) 250 200 150 100 50 1995/96 20 40 60 80 100 ... colonies. Over the 20-year period, it averaged 0.49 ± 0.13 chicks/ pair at Trypot Hole, 0.41 ± 0.21 at Van ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 175–190 : Author(s): Crawford, R.J.M., B.M. Dyer, J. Cooper and L.G. Underhill

5. Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey

   of the biomass estimate which is set as the catch for a 20-year period. Three possible fishing seasons ... for a 20-year period. Three possible fishing seasons are considered. The model extensions requested ... -' a is the age of the krill in years, and t measures time after the 'start! of the year. As the three-month ... that B"P in this model is measured at the 'start' of the year, mean that krill reaching three years of age always ... of age a years at the start of 'year' y (N,,) are governed by the equations: where 'year' is a 12 ... eight years of age and older is relatively small, and so can be neglected. Provided that the krill ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Author(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew

6. Can toothfish catches be used to predict the presence of vulnerable benthic invertebrate taxa?

   ° S 80° S 160° E 150 °E 170°E 180° 170°W 160°W 150°W Parker and Smith 90 Table 1: Explanatory ... and%20Smith\tr-ch%20for%20author\www.ccamlr.org\pu\e\e_pubs\VME_guide.pdf file:///\\Erebus\interim ... \Communications\CCAMLR%20Science\Journal%202011\final%20papers\Parker%20and%20Smith\tr-ch%20for%20 ... Science\Journal%202011\final%20papers\Parker%20and%20Smith\tr-ch%20for%20author\www.un.org\Depts\los ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 87–96 : Author(s): Parker, S.J. and M.H. Smith

7. Use of the Leslie stock depletion model for the assessment of local abundance of Patagonian toothfish (Dissostichus eleginoides)

   travaux sont proposes. An2 M3YYeHllR JIOKaJIbHblX ~ ~ K O H O M ~ P H O C T ~ ~ B 3HaYeHURX YJIOBa 3a ... B JIOKaJlA30BaHHbIX pafi0~aX B TeYeHMe IlepHOJJOB, KaK MAHAMYM, TpeX Awefr. Pe3yJlb~a~b1 yKa3aJIM Ha TO, YTO ... from the former Soviet Union dominated the fishery for the first three years. Since the start ... the fishery. The total reported annual catch peaked at just over 8 000 tonnes in 1989/90. Since ... Paper Title:  Use of the Leslie stock depletion model for the assessment of local abundance of ... used to examine local patterns in catch per unit effort (CPUE) in the longline fisheries for Patagonian ... in localised areas for periods of at least three days. The results suggest that there is greater ... potential for application of the model in some areas than in others, but in general there is no sufficiently ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 55–77 : Author(s): Parkes, G., C.A. Moreno, G. Pilling and Z. Young

8. Natural mortality of grey rockcod (Notothenia squamifrons) in various areas of the Indian sector of the Southern Ocean

   the empirical relationship between M and age at maturity for most fish (tn) where 50 or 70% of a population ... to compare our data with the results obtained by Duhamel (Kock, Duhamel, Hureau, 1985), age at maturity ... 1). The Alverson-Carnee method takes into account the age at which fish biomass reaches its maximum ... (T). This parameter is calculated according to the age of the oldest group in the catches (T m), comprising not less ... were 0.38, 0.36 and 0.33 for the above areas respectively. These values are comparable with those ... derived for most notothenioids. File:  11-Zaitsev.pdf ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 141–146 : Author(s): Zaitsev, A.K.

9. Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica

   that bottom trawling in the past 20 years has had a considerable effect on the community structure ... B 3aJIHBe TIpIO~3 B 1990/91 r. C06paHHble ~aHHble HCnOJIb- 30BaJIHCb B H3Y'-leHHH nOTeH~HaJIbHOrO B03 ... integridad. 1. INTRODUCTION In the last 10 years, a number of studies have highlighted the impacts ... ). On the basis of published data on benthos in the Antarctic, Kock (1990) examined the differences ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Author(s): Constable, A.J.

10. Homogeneity of body length composition of Antarctic krill within the commercial zone

    13.275 0.2757 30 m 2 12 11.741 0.4667 31 b 2 9 28.563 0.0008** 32 b 2 12 20.588 0.0567 33 m 2 11 ... 20 Data set 2* 30 40 50 Length (mm) 60 15 10 5 n=182 x=48.7 n=187 x=49.1 n=170 ... - w.. 5 0 20 30 4D 50 60 Data set 53* Data set 49** ..-.. 15 ~ n=247 n=173 ....... 10 x=39.4 x=41 ... .6 » 5 (.) c· CD 0 ::::! 0- 15 CD n= 210 n=164 l0- w.. 10 x=42.0 x=44.5 5 0 20 30 40 50 60 Length (mm ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 17–28 : Author(s): Ichii, T.

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