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1. A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region

   compiles parameters for use in the ecosystem dynamic models that are needed to assess these methods. These ... species that feed on krill in this region. Maximum krill transport rates are also derived from the OCCAM ... global ocean circulation model. This parameter set, like most others, is associated with considerable ... uncertainty, which must be taken into account when it is used. The sources, assumptions and calculations at ... most others, is associated with considerable uncertainty, which must be taken into account when it is ... suggest that fi sh are the major krill consumers in all SSMUs, with perciform fi sh taking as much krill ... species must also be parameterised. The models must also account for uncertainties associated with the ... scenario, which cannot be discounted but was not considered, would involve krill swim- ming with the ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Autor(es): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters

2. Consideration of major issues in ecosystem monitoring and management

   within which to investigate krill availability. Vital rates can be investigated directly and also by ... movement that may be related to feeding and spawning activity (Everson et al., 2001), although movement ... , circulation patterns are topographically driven such that adjacent colonies may be receiving water with ... oldest animal likely to be present in the population, such that = maxt t tb r NP In a situation ... assumption that mortality is not varying with age. Williams (1995) indicates that mortality may be high ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Autor(es): Everson, I

3. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data

   (Euphausia superba) associated with the daylight phase over the diurnal cycle (i.e. brightness categories ... change during summer and winter in SS and SO. Daily average trawling depth tended to be shallower during ... day in summer in SS and SO. It is suggested that the seasonal and diurnal changes in vertical ... and June in SS, and the range during each month tended to be smaller than that in the same months in ... decreased after that in SG. It reached a maximum depth of 144 m (±2.2 m) in August but it shifted to a ... in SS, and the ratio for each month tended to be smaller than that of the same month in SO (1.4–2.2 ... 1992. It is suggested that the seasonal vertical distribution is closely correlated with switching to ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 163–172 : Autor(es): Taki, K., T. Hayashi and M. Naganobu

4. Reproduction of the mackerel icefish (Champsocephalus gunnari) and its implications for fisheries management in the Atlantic sector of the Southern Ocean

   females. Fjords have been reported to be important spawning grounds. Fecundity is highest around South ... exploited species could be best protected by the establishment of a permanent closed fishing season from 1 ... March to the end of each year's meeting of CCAMLR which is usually held in late October or early ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 51–68 : Autor(es): Kock, K.-H.

5. Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors

   censuses on the Antarctic Peninsula are often subject to logistical challenges that preclude nest counts ... counts with non-standard timing. The challenge is, therefore, to correct ‘off-peak’ census counts to make ... them comparable with current standard methods. Census correction involves knowing (i) how the census is ... , sea-ice etc.). It is found that mean October temperatures constitute the most consistent significant ... applicable to data that may have errors in the timing of censuses that must be accounted for along with ... full inte- gration of census estimates that may be historical (e.g. from the early Antarctic ... count that could be obtained in any given year are not strictly coin- cident, and the maximum census ... that mean October temperature is the covariate most consistently correlated with mean CID, and is sig ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Autor(es): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece

6. Scientific observations in CCAMLR fisheries – past, present and future

   strategy has often had to deal with incomplete and uncertain information on affected resources. Fishery ... bilateral agreements between CCAMLR Members and they operate on vessels under flags other than that of their ... should be emphasised that the scheme is limited to scientifi c observation and is separated from ... Stock Assessment (WG-FSA); (iii) there are critical uncertainties that might be clarifi ed by ... observational series. Initially, CCAMLR requested that all fi sh and fi sh by-catch data be routinely ... subsequent DNA analysis, together with any bands or other identifying markers; (iii) that observers ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 81–98 : Autor(es): Sabourenkov, E.N. and E. Appleyard

7. CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass

   per day was higher. The correlation between catch and tow time was considered to be an indicator of ... be 20% or more (Anon., 2001). Another, much smaller, peak in Figure 5 is associated with 8–12 hauls ... always be appropriate for that purpose (Siegel et al., 1998). In addition to the evaluation of fl ... duration, that would allow many different types of CPUE to be derived, such as CVDF and catch per hour ... term ‘biomass’ is widely used in the litera- ture. It should be noted that in this paper the term ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Autor(es): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov

8. Australian research on Antarctic bird and seal diets

   cantered the CCAMLR Ecosystem Monitoring Programme's priority study area, Euphausia superba forms a ... continuing studies will be useful to assess the natural variability of the system. Around the sub-Antarctic ... of prey populations is thus very limited, although continuing studies will be useful to assess the ... ) Time: August to October 1984 Prehatch Posthatch (1987/88) 25 52 4 3 41 450 55 o 25 o ... Source of material: Faeces collected monthly from sea ice - 51 in August, 61 in September and 39 in ... 72 and 183 mm, mean 129.5±23.8 mm. Location: Amanda Bay (69°19'S: 76°46'E). Time: 14 August, 15 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 231-249 : Autor(es): Williams, R.

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

   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 ... , natural mortality, spawning and fishing on estimates of yield and yield per recruit. It can also be used ... . The procedure numerically integrates a set of differential equations which incorporate functions that ... , CCAMLR decided that the catch rate from any stock was no t t o exceed F,., (CCAMLR, 1987). Th i s ... leve l of f i sh ing w a s t h o u g h t t o a l low maximum fishing effort while ensuring that ... la t i on (a difficult task in any fishery). However, it is based on the assumption that the ... population parameters a r e relatively invariant over t ime a n d can be measured reasonably ...

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

10. A simulation study of krill fishing by an individual Japanese trawler

    that scientific surveys be planned to operate in small areas concurrently with fishing vessels. File ... is compared with (and partially tuned to) statistics for a sample of data from the commercial fishery ... -concentration krill distribution parameters only. Indices that distinguish primary searching time from secondary ... collection of the requisite data may not be practical. Other approaches (e.g. research vessel surveys) need ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 1–108 : Autor(es): Butterworth, D.S.

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