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1. Beyond MSY: a consideration of definitions of management objectives

   will vary. It can be argued that they are not being sustained, and that MSY is equal to the minimum catch ... C = R + G - M, or in terms of yield per recruit (recruitment in this case being measured as total weight of recruits ... be achieved by a fishing mortality that varies about the constant recruitment optimum, being lower when ... when strong year-classes are being replaced by weak ones. Conversely, the stock may increase when ... recruitment or growth overfishing. Account also needs to be taken of the uncertainties associated with any ... Article II of the CCAMLR Convention. The criteria will depend on whether the main concern is with ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Author(s): Gulland, J.A.

2. Status of the FIBEX acoustic data from the West Atlantic

   from the Itzumi, despite there being a substantial overlap in the two survey areas and an almost ... 1: O ~ ~ H K M nnOTHOCTU U ~ H O M ~ C C ~ I KPUnR, paCCW4TaHHble no pe3yJIbTaTaM ~ K ~ C T H Y ~ C K O ~ ~ C'be ... , nOKa3blBaIQlUHe KOOpflRHaTbI nHeBHb1X MapIUpyTOB C'beMOK B PaMKaX FIBEX: (a) Itzumi; (b) Odissey; (C) Walther ... survey) with data collected at 120 kHz (all other vessels), it is concluded that this does not materially ... affect the estimated biomass. The data from the Professor Siedlecki survey do not provide estimates that ... are consistent with the other surveys. The authors can find no explanation for this difference. File ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Author(s): Trathan, P.N. and I. Everson

3. Genetic variations and population structure of krill from the Prydz Bay region of Antarctic waters

   consistent with the hypothesis that all samples were derived from a single breeding population of krill. The ... results of this study agree closely with genetic data from other studies on krill in the Atlantic sector ... of the Southern Ocean, suggesting that krill stocks over at least 6000 kilometres of Antarctic waters ... result consistent with the hypothesis that all samples were derived from a single breeding population ... of krill. The results of this study agree closely with genetic data from other studies on krill in ... the Atlantic sector of the Southern Ocean, suggesting that krill stocks over at least 6000 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 271-273 : Author(s): MacDonald, C.M., R. Williams and M. Adams

4. On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)

   MrHoBeHHotf eCTeCTBeHHotf cMepTHocTH (M) BH,l(a Champsocephalus gunnari B patfoHe IO:>KHOtf reoprHH 6bIJI ... ,lIJI5I Ka:>K,lIOrO H3 ce30HOB H 06be,llHHeHHbIX P5I,lIOB, nOJIYlleHHbIX no ,lIByM npo~e,llypaM ... suggested that M =0.56 should be used in stock assessment for C. gunnari in Subarea 48.3. File:  19-Frolkina ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Author(s): Frolkina, G.A. and R.S. Dorovskikh

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

   off the south of Chile which is being conducted in accordance with CCAMLR regulations. File:  01 ... the south of Chile which is being conducted in accordance with CCAMLR regulations. ... is being conducted in accordance with CCAMLR regulations. Resume L'approche de revaluation des ... C TeM, 1.1 T06bI pa3pa60TaTb Bce06beMJIIOIl1YIO CXeMY B3SITHSI np06, pe3YJIbTaTbI KOTOPOti ... fishery specifically stresses the lack of information as being the distinctive attribute qualifying ...

   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

6. Midwater trawl catchability as an aspect of a quantitative assessment of krill biomass conducted using a trawl census survey

   BeJIHqHHOH, 3aBHC5IIIleH KaK OT XapaKTepHCTHK nOBe,l(eHH5I H pacnpe,l(eJIeHH5I 06JIaBJIHBaeMOrO 06beKTa TaK ... trawl being used. This paper will not examine matters such as selecting the optimal set of trawl ... . In addition, trawl catchability is generally accepted as being a constant value equal to 1.0. We ... trawl parameters. Reliability of biomass assessments will improve with better knowledge of trawl ... high relative error. A standard method for conducting krill trawl census surveys needs to be developed ... total amount of krill entering the trawl should be carried out when selecting trawl construction. File ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 257–272 : Author(s): Kasatkina, S.M.

7. Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys

   ' and to require the well-being of dependant species to be considered in the management of commercial harvesting ... years, the last significant catches being in the early 1980s (Kock and Koster, 1990; CCAMLR, 1991 ... ). Whilst there is as yet no evidence that predators are being adversely affected by fishing operations ... , foraging ranges and population sizes from the literature are used to show that for some years catches ... within 100 km of predator colonies between December and March may be up to 45% of the land-based predator ... is likely to emerge in areas of high overlap between predators and the fishery earlier than would be ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Author(s): Agnew, D.J.

8. Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 kHz and 120 kHz

   >KHbIX 0pKHet't:CK:HX OCTPOBOB H OCTpOBa 3JIe~aHT B MapTe 1990 r. BeJIHlIHHbI CHJIbI o6paTHoro ... Africa 75 lIaCTOTe B 120KrL\ nOCTOSIHHO npeBblWaJUf BeJUfllHHbl, nOJlYlIeHHble npH lIaCTOTe B 38 ... commonly been conducted at echosounder frequencies of between 50 and 200 kHz, with 120 kHz being probably ... kHz being raised by 12.5 dB, an increase of 17.7 fold, amply demonstrating the importance ... be explained by possible experimental error, and which was therefore attributed to real differences ... in average target strength at these two frequencies. The results are in good agreement with recent ... experimental work on the target strength of encaged E. superba at 38 and 120 kHz but are in major conflict with ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 75–86 : Author(s): Hampton, I.

9. Size compositions of males and females in the course of the life cycle of Euphausia superba

   BHHMaHHe Pa3J1HqH5I B pa3MepHOM COCTaBe nOJlOBblX rpynn nonyJl5l~m';f Euphausia superba Hero ce30HHOH ... 0 pa3MepHOM COCTaBe no nOJlOBblM rpynnaM CQHTaeTC5I He06xo~HMOH ~Jl5I nOHHMaHH5I CTpyKTYPbl nonyJl5l~HH ... catch samples taken over a vast area. A paper on this phenomenon is being prepared for publication ... ; / .- 10 .- I " I ,/ 0 0 .. n m", A BeD ... % % 30 100 54-13S 35-23W ci" 25 11.9.70 'f 48 20 ... during the reproductive cycle. Information on size composition by sex is considered to be vital for an ... understanding of krill population structure. It is suggested that duties of biologist-observers aboard ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 3–16 : Author(s): Makarov, R.R.

10. Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data

    being searched. 285 Using the methods described in this paper, no inferences can be made about ... " concentrations in a post hoc analysis such as the one being performed here. For example, in Figure ... rmax possible radius, then Mk = f rk fer) dr. For the situation being considered here, o this bias ... of concentrations in the region being surveyed can be estimated by use of the random search formula (Mangel, 1985 ... paper, I show how data that are routinely collected by survey vessels can be used to estimate the number ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 283–322 : Author(s): Mangel, M.

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