Search results

1. Notes on the use of virtual population analysis for stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons

   , dominated in recent years by the 1987 year class (1 year olds in 1988), was quite robust, despite the use ... was composed of a large proportion of 5 year olds, which was not observed during the survey on Falklands ... Protector in January 1992. Breakdown in the credibility of the VPA results in most recent years ... in recent years by the 1987 year class (1 year olds in 1988), was quite robust, despite the use of various ...

   Meeting Document : WG-FSA-92/27 : Author(s): G. Parkes (United Kingdom)

2. Spatial variability and power to detect regional-scale trends

   , and increasing the significance or Type I error level from 0.10 to 0.20 improved power such that a few less years ... , and increasing the significance or Type I error level from 0.10 to 0.20 improved power such that a few less years ... or sites were required to detect a trend. Monitoring every 3 years instead of annually reduced power only ... or sites were required to detect a trend. Monitoring every 3 years instead of annually reduced power only ...

   Meeting Document : WG-EMM-03/47 : Author(s): C. Southwell and L. Emmerson (Australia)

3. Research plan for the exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2015/16

   known well as namely the area is data poor areas. In the Division 58.4.1 there are two stocks; one ... as namely the area is data poor areas. In the Division 58.4.1 there are two stocks; one extends from ... extends from the SSRU 58.4.1C to the SSRU 58.4.2A, and the other one to the SSRU 58.4.1H. The population ... the SSRU 58.4.1C to the SSRU 58.4.2A, and the other one to the SSRU 58.4.1H. The population sizes were ...

   Meeting Document : WG-SAM-15/07 : Author(s): Delegation of the Republic of Korea

4. Revised research plan for the exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2015/16

   known well as namely the area is data poor areas. In the Division 58.4.1 there are two stocks; one ... as namely the area is data poor areas. In the Division 58.4.1 there are two stocks; one extends from ... extends from the SSRU 58.4.1C to the SSRU 58.4.2A, and the other one to the SSRU 58.4.1H. The population ... the SSRU 58.4.1C to the SSRU 58.4.2A, and the other one to the SSRU 58.4.1H. The population sizes were ...

   Meeting Document : WG-FSA-15/56 : Author(s): Delegation of the Republic of Korea

5. Advances in the use of airborne aerial survey techniques to estimate krill-eating penguin populations in Area 48

   over the coming years and we will provide similar updates at regular intervals. Author(s):  P.N.Trathan ... the coming years and we will provide similar updates at regular intervals. ...

   Meeting Document : WG-EMM-14/05 : Author(s): P.N.Trathan, A.J. Fox, N. Ratcliff and P.T. Fretwell (United Kingdom)

6. Informational report on research fishing for Dissostichus spp. in Subarea 48.1 by Ukraine in 2019

   -18/20 Rev.1. Author(s):  P. Zabroda, L. Pshenichnov and K. Demianenko Title:  Informational report ... plan WG-FSA-18/20 Rev.1. ...

   Meeting Document : WG-SAM-2019/33 : Author(s): P. Zabroda, L. Pshenichnov and K. Demianenko

7. Estimating toothfish biomass in Subarea 48.3 using local depletions

   as a means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ... of 12’ by 12’ where there had been forty or more hauls in any particular year. There were 62 individual ... over the four years and multiplying by the total fishable area in Subarea 48.3 we arrived ... of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas of 12’ by 12 ...

   Meeting Document : WG-FSA-SAM-04/18 : Author(s): Pearce, J., Agnew, D.

8. Influence of tag numbers, size of tagged fish, duration of the tagging program, and auxiliary data on bias and precision of an integrated stock assessment

   annual recruitment and year class strengths. (3) For a simulated lightly fished stock, CASAL assessments ... , however the precision of SSB status estimates in the final assessment year was relatively low. Bias ... and year class strengths. (3) For a simulated lightly fished stock, CASAL assessments with good quality ... the precision of SSB status estimates in the final assessment year was relatively low. Bias and precision ...

   Meeting Document : WG-SAM-12/24 : Author(s): P.E. Ziegler (Australia)

9. Stomach contents of sub-adult Antarctic toothfish (Dissostichus mawsoni) from the western Ross Sea, Antarctica

   (Muraenolepididae) were also important. Glacial squid (Psychroteuthis glacialis) were found in about 20% of stomachs ... also important. Glacial squid (Psychroteuthis glacialis) were found in about 20% of stomachs, but only ...

   Meeting Document : WG-FSA-06/27 : Author(s): D.W. Stevens (New Zealand)

10. Progress on the application of an age-structured production model fitted to commercial catch-rate and catch-at-length data to assess the toothfish (Dissostichus eleginoides) resource in the Prince Edward Island vicinity

    -at-length and GLM standardised CPUE data are all extended for one further year. Despite model refinements ... standardised CPUE data are all extended for one further year. Despite model refinements, the CPUE data ...

    Meeting Document : WG-FSA-03/97 : Author(s): A. Brandão and D.S. Butterworth (South Africa)

Pages