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1. A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty

   Paper Title:  A generalised model for evaluating yield and the long-term status of fish stocks ... projection model for assessing the long-term annual yield which satisfies objectives for the maintenance of ... the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... probability that the spawning biomass will become depleted to below some specified level over a specified ... , CCAMLR decided that the catch rate from any stock was no t t o exceed F,., (CCAMLR, 1987). Th i s ... . The two options should give similar results when there is no Monte Carlo integration over ... escapement from each trajectory divided by the same median, but for a period when no yield is taken (e.g. y ... MODEL FOR EVALUATING YIELD AND THE LONG-TERM STATUS OF FISH STOCKS UNDER CONDITIONS OF UNCERTAINTY ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Autor(es): Constable, A. and W.K. de la Mare

2. Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia

   Paper Title:  Investigation of bias in the mark–recapture estimate of toothfish population size at ... South Georgia Abstract / Description:  This paper investigates the influence of mixing of fish, and the ... uneven distribution of tag placements and recapture effort, on bias in the Petersen estimator of ... population size. It does so by constructing a spatial model of the South Georgia toothfish fishery ... , regardless of where they were. No other mortality factors were included in the model, not even the antici ... InvestIgatIon of bIas In the mark–recapture estImate of toothfIsh populatIon sIze at south georgIa D.J. Agnew ... Abstract This paper investigates the influence of mixing of fish, and the uneven distribution of tag ... placements and recapture effort, on bias in the Petersen estimator of population size. It does so by ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 47–63 : Autor(es): Agnew, D.J., G.P. Kirkwood, J. Pearce and J. Clark

3. The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3

   Paper Title:  The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3 Abstract ... / Description:  Fine-scale data supplied to CCAMLR for 1987/88 showed that the catches of P atagonotothen ... brevicauda guntheri were five times greater in the South Georgia area than at Shag Rocks. Previous survey ... data and reports to the CCAMLR Working Group on Fish Stock Assessment indicated that this species was ... no reports of P.b. guntheri being taken as by-catch in the krill fishery. 3. DISTRIBUTION OF ... WG-FSA-90/12 THE FISHERY FOR PATAGONOTOTHEN BREVICAUDA ... CCAMLR for 1987/88 showed that the catches of Patagonotothen brevicauda guntheri were five times greater ... in the South Georgia area than at Shag Rocks. Previous survey data and reports to the CCAMLR Working ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 275–283 : Autor(es): Everson, I. and C. Mitchell

4. Do krill and salps compete? Contrary evidence from the krill fisheries

   presence of green krill were analysed. No relationship between salp density and the proportion of green ... area, the proportion of green krill was high only when salp density was extremely low. However, no ... Paper Title:  Do krill and salps compete? Contrary evidence from the krill fisheries Abstract ... phytoplankton were analysed using logbook data from Japanese krill trawlers operating near the Antarctic ... green krill were analysed. No relationship between salp density and the proportion of green krill in ... , the proportion of green krill was high only when salp density was extremely low. However, no clear ... Kaisha (Ltd) from 1984/85 to 1992/93 (no data were available for 1989/90 and 1991/92). Data from the ... that there is no apparent relationship between the proportion of green krill and salp density in the ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Autor(es): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare

5. Estimating optimal observer coverage in the Antarctic krill fishery

   Paper Title:  Estimating optimal observer coverage in the Antarctic krill fishery Abstract ... / Description:  Data collected as part of the CCAMLR Scheme of International Scientific Observation from ... components analysis (VCA) to determine the relationship between observer coverage and our ability to reliably ... estimate parameters of interest, in this case the mean (or median) krill length and the rate of larval fish ... Estimating optimal obsErvEr covEragE in thE antarctic krill fishEry D.J. Agnew1, P. Grove2, T. Peatman1 ... Abstract Data collected as part of the CCAMLR Scheme of International Scientific Observation from ... components analysis (VCA) to determine the relationship between observer coverage and our ability to ... reliably estimate parameters of interest, in this case the mean (or median) krill length and the rate of ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Autor(es): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards

6. CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island

   Paper Title:  CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the ... there was a marked change in two kinds of CPUEs, body length and greenness of krill during the fishing ... season, these parameters were examined for each 10-day period of the Japanese krill fishery in the ... northern waters of Livingston Island in the 1987/88 season. It appears that Japanese trawlers have not ... March, the major fishing ground moved to the waters west of Elephant Island. There was no significant ... area moved as a whole and assume no advection from adjacent areas, approximately 7% of the biomass was ... ANTARCTIC KRILL DURING 1987/88 SEASON IN THE FISHING GROUND NORTH OF LlVINGSTON ISLAND Y. Endo and T ... , body length and greenness of krill during the fishing season, these parameters were examined for each ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Autor(es): Endo, Y. and T. Ichii

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

   data available showed no evidence that the presence of any of six VME indicator taxa was informative in ... Paper Title:  Can toothfish catches be used to predict the presence of vulnerable benthic ... invertebrate taxa? Abstract / Description:  Accurate estimation of the impact of bottom fishing on vulnerable ... marine ecosystems (VMEs) requires knowledge of the distribution of those communities relative to the ... segment, ~1 200 m. Analysis of the data available showed no evidence that the presence of any of six VME ... found no association, although these conclusions are likely to reflect the disproportionate influence ... than that gained when offering toothfish variables, but no model explained more than 25% of the null ... correlated at that scale. The present analysis found no correlation at the fine scale of a longline segment ...

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

8. Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach

   , Ommastrephidae) in the Scotia Sea: an ecological approach Abstract / Description:  In anticipation of the ... development of a new fishery for the ommastrephid squid Martialia hyadesi in the Scotia Sea, this paper ... presents a revision of annual consumption of the species by higher predators and provides a brief review of ... information about the life cycle and distribution of the species obtained from research fishing and commercial ... ommastrephid squid, is semelparous. There are no data on the second year of the life cycle and little or no ... whales. There are no data on diet of long-finned pilot whales in the Antarctic but elsewhere they are ... harvested in accordance with Article 11 because there is no way of estimating the proportional escapement ... , including the egg stage. However, no squid more than one year old have been examined so, until more data ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 125–139 : Autor(es): Rodhouse, P.G

9. Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations

   Paper Title:  Fishing ground selection in the Antarctic krill fishery: trends in patterns across ... characterised using STATLANT and CCAMLR fine-scale data. Among the 15 small-scale management units (SSMUs ... ) within Subareas 48.1, 48.2 and 48.3, including the pelagic SSMUs, only one-third were identified as major ... contributors to the total catch. A recent shift in operational timing towards later months within fishing ... negligible catch in 1999). Except for 1988, almost no catches were reported from the pelagic area in ... mainly during summer to autumn. Almost no catch was made from Subarea 48.1 except in autumn 1990. The ... fishery in Area 48 could be divided into two sub-periods. The first period is 1980–1989, when no fishing ... -free dur- ing winter with no fishing operations. Also, if the fishing operations of individual nations ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Autor(es): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu

10. An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island

    Paper Title:  An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island ... Abstract / Description:  Assessments of the abundance and potential yield of the mackerel icefish ... (Champsocephalus gunnari) populations at Heard Island are developed from the results of four scientific surveys ... conducted in 1990, 1992, 1993 and 1997. The assessments include estimates of all the parameters required ... Heard Island. Figure 2 shows no apparent relationship between the numbers of recruits on the plateau ... though virtually no pre-spawning 2-year-old fish were taken with this gear in 1997, the proportion of ... of 'small fish' was difficult. The general yield assessments below show that there is no ... is to calculate the fishing mortality which would result in a probability of no more than 0.05 that ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 79–101 : Autor(es): de la Mare, W.K., R. Williams and A.J. Constable

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