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1. Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives

   at first fishing = 5 years (knife-edge) Age at first spawning = 5 years (knife-edge) Pooled age-class ... ! Von Bertalanffy Woo = 1000 grams Age at first fishing = 3 years (knife-edge) Age at first spawning ... = 3 years (knife-edge) Pooled age-class = 10 years Table 2: Fishing mortality rates consistent with each ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 467–475 : Author(s): de la Mare, W.K. and A. Constable

2. 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

   a s to the values for age-at-first- assumed knife-edge maturity and selectivity, and capture a n d maturi ty ... yr.' (natural mortality) oR = 0.4 (recruitment variability) a, = 3 yr (knife-edge age ... -at-recruitment) a,,, = 3 yr (knife-edge age-at-maturity) a+ = l + y r (age-range corresponding to biomass ... the range [a, bl. Instead of knife-edge forms for the selectivity and maturity-at-age functions ...

   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

3. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

   of the population with natural mortality, and knife-edge selectivity. But departure from the steady-state ... was modelled through three knife-edge fishing selectivity functions represent- ing combined gear efficiency ... selectivity function is knife-edged, while the maturity function is not, Pmat includes some immature fish ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Author(s): Ziegler, P.E., D.C. Welsford and A.J. Constable

4. A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ

   to be knife-edge in age for the base case; for the sensitivity test for Division 58.5.2 the functional forms ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Author(s): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller

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

   classes other than 3. This shows that recruitment to the fishery was knife-edged at age 3 in the 1997 ... the vector of recruits. In these three trials, selection to the fishery was considered to be knife-edged ...

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

6. Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari in the South Georgia area

   If the recruitment to the fishery were a knife-edged process, the estimate of the annual per capita recruitment ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 1-21 : Author(s): Cooke, J.G.

7. A simple approach for calculating the potential yield of krill from biomass survey results

   y, and is the (knife-edge) age-at-first-capture. M F(y) ar These equations assume that the number of krin 8 years ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Author(s): Butterworth, D.S., A.E. Punt and M. Basson

8. Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3

   Paper Title:  Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3 Abstract / Description:  An operational management procedure for krill (Euphausia superba) in Subareas 48.1, 48.2 and 48.3 requires a basis for the assessment of resource status,

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 189–219 : Author(s): Butterworth, D.S.

9. Assessments of by-catch in trawl fisheries at Heard and McDonald Islands

   200 mm. Thus, knife-edge selection at 200 mm was assumed for skates in these assessments ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Author(s): Constable, A.J., R. Williams and W.K. de la Mare

10. A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia

    -capture and older. Selectivity is assumed to be knife-edge in both cases. Two important points ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Author(s): Basson, M

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