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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 ... period and set a further constraint on the long-term status of the stock relative to the pre-exploitation ... mean 2 and variance G ~ . In the simplest case, recruitment is considered to be independent of ... the reproductive performance of the stock was not jeopardised (SC-CAMLR, 1987). In addition, this ... Antarctic marine living resources in terms of their abundance relative to the pre-exploitation abundance ... up the number of fish in each age class at the start of the simulation period. Each age class is ...

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

2. Joint Polish/American hydroacoustic survey of Elephant Island and the vicinity of King George Island, 1988

   in most areas covered by last year’s survey. The total biomass in the vicinity of Elephant Island was ... estimated from 120 kHz data to be 260k tonnes and that in the Bransfield Strait south of King George Island ... was 39k tonnes for a total of 299k tonnes in the combined areas. The estimated 200 kHz survey data ... area north of King George Island and 309k tonnes (in 8 836 n m 2) in the expanded area around Elephant ... ; T is echo integrator deflection for 1 n mile segment (in n miles). The mean abundance of krill per ... - 95.7 (db) 1.2 where L is the length of krill in mm. Mean surface density or abundance (tonnes/nm2 ... abundance of biomass; w is the mean weight of krill (in g) and is mean density of krill from 1.1 above mean ... in the vicinity of Elephant Island was estimated from 120 kHz data to be 260k tonnes and that in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 357–377 : Автор(ы): Macaulay, M.C.

3. Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000

   commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the South ... at the beginning of fishing operations each season. In summer, biological factors that affect product ... Paper Title:  Analysis of krill trawling positions north of the South Shetland Islands (Antarctic ... operations concentrated on the outer shelf in the early 1980s, along the shelf slope in the mid to late 1980s ... to the small number of data points (<5). In December the mean STP was positively correlated with ... in the 1990/91 and 1994/95 seasons (Table 1). Interestingly, the monthly variation of mean STP for ... of commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the ... in the season. Trawling positions seemed to be primarily governed by the distribution of larger ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Автор(ы): Kawaguchi, S. and K. Segawa

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

   Abstract / Description:  The homogeneity of krill (Euphausia superba) length composition in commercial ... that sampling from one part of the haul provides a reasonable estimate of length composition in the ... Paper Title:  Homogeneity of body length composition of Antarctic krill within the commercial zone ... trawl catches (hauls) was investigated by comparing length compositions from different parts of the same ... . Nocturnal changes in the mean length of a euphausiid population: vertical migration, net avoidance, or ... ) in 53 out of 60 hauls. Therefore it is concluded that sampling from one part of the haul provides a ... reasonable estimate of length composition in the entire haul. In contrast to small variations in length ... different parts of the haul as possible in order to obtain an unbiased estimate of the catch length ...

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

5. Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf

   of mature fish in the west is related to the migration of maturing individuals from the eastern and ... , Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf Abstract / Description ... determine the age-length composition of mackerel icefish (Champsocephalus gunnari) from different parts of ... the South Georgia area. An analysis of the spatial distribution of C. gunnari size and age groups over ... ). In the east region of South Georgia the mean length of C. ~z~i innri was generally the smallest ... census trawl surveys of C. glii~i~ari (Table 2). Mean length was smallest in the east region of the ... observed between those t ~ 7 o groups and the easterin group. The larger number of mature fish in the ... species in waters around South Georgia. A number of papers on the ecology of C. gl~nizari have been ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 133–146 : Автор(ы): Frolkina, G.A

6. Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program

   appeared in the data. An alternative procedure, using estimates of the mean and variance of baseline time ... correlated (>0.6). Criteria for inclusion of parameters in the indices are discussed when parameters are ... statistical procedure adopted by WG-EMM in 1996 for identifying anomalies in CEMP parameters. The power of the ... statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program Abstract / Description ... values have appeared in the data. An alternative procedure, using estimates of the mean and variance of ... systematic shift in mean level. A randomisation procedure could be tested for the identification of drift ... correlated (>0.6). Criteria for inclusion of parameters in the indices are discussed when parameters are ... statistical procedure adopted by WG-EMM in 1996 for identifying anomalies in CEMP parameters. The power of ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 101–117 : Автор(ы): de la Mare, W.K. and A.J. Constable

7. Problems of population age structure determination of Euphausia superba Dana using an example from the Antarctic Peninsula area and adjacent waters

   examines the size structure of populations of E. superba in relation to their habitat, on the basis of an ... analysis of data collected by the author during the 1981 season in the region of the Antarctic Peninsula ... similar conditions. Hypotheses are formulated regarding the age and growth of E. superba; in addition ... , data are cited on the growth rates of krill in relation to feeding conditions, temperature factors and ... populations of E. superba in relation to their habitat, on the basis of an analysis of data collected by the ... author during the 1981 season in the region of the Antarctic Peninsula and the South Shetland Islands ... . Hypotheses are formulated regarding the age and growth of E. superba; in addition, data are cited on the ... in the size composition of krill, modelling of growth under various conditions and physiological and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 227-270 : Автор(ы): Spiridonov, V.A.

8. Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season

   of krill off Wilkes Land during the 1985/86 season Abstract / Description:  Japanese krill fishing ... operations were observed on board a commercial vessel and the actual operation described in detail. ‘Fish ... -finder’ was most useful in detecting swarms, while sonar was used to judge the towing direction. The size ... of fished swarms ranged from 100 m to 10 km with different distributions occurring in different ... per unit effort) data as an index of krill abundance is now under investigation in the "Krill ... be the most representative of the Japanese krill fishery in the past there, or at present in the ... . 2. Size Although instructions for reporting size of krill in the logbook required categorization ... of the krill by body length, this vessel took body height as well into consideration in the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Автор(ы): Ichii, T.

9. Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies

   . length composition of samples, are also illustrated in figures. The importance of studies on the role of ... Paper Title:  Mesopelagic fish of the Southern Ocean- summary results of recent Soviet studies ... a part of the general multi-disciplinary program of research on Antarctic biological resources ... are sufficient to allow a description of the general ecology and distribution of these species. Some ... species. Some details of the biological characteristics of these species are summarized in tables with ... illustrated in figures. The importance of studies on the role of myctophids in the Antarctic ecosystem is ... 1 500 m in depth. Of these three families, species of the family Myctophidae are the most widely ... distributed and abundant, with more than 20 species found in the area. Most of them have a circumpolar ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Автор(ы): Sabourenkov, E.N.

10. Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) – biomass

    of zooplankton stocks in the waters around South Georgia was carried out during November and December ... 1981. The data have been analysed using various definitions of strata. The total biomass in the area of ... estimate of mean density throughout the region of 11.7 tonnes km-2. Although the estimate of the mean is ... Paper Title:  Analyses of acoustic line-transect data from the waters around South Georgia ... taken during the survey period is shown in Figure 2. Most of the krill were small, with a mean length ... to estimate the biomass of krill in this region. The mean weight of the sampled krill was 0.18 g ... an estimate of the total biomass in the region. This was 2.13 x 106 tonnes giving a mean krill ... based on the six regional strata shown in Figure 5. Source of Degrees of Sum of Squares Mean Square ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 225–243 : Автор(ы): Murphy, E., I. Everson and A. Murray

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