Résultats de la recherche

1. Background information to support development of a feedback management strategy for the krill fishery in Subarea 48.1

   information needed to support development of a feedback management strategy for the krill fishery in Subarea ... Subarea 48.1 will both facilitate and expedite the allocation of a catch limit in the subarea without ... review the logic for these gSSMUs and then use the gSSMU concept in many of the vignettes that follow. In ... fourth vignette, we examine how temporal variability in the seasonal sea-ice coverage of gSSMUs is ...

   Meeting Document : WG-EMM-16/45 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries

2. Revised research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan

   schedule toward the submission. We investigated the biological features of D. mawsoni in the Subarea and ... WG-SAM meeting in 2016. Predicted numbers of tag recaptures from the estimated stock sizes using ... Chapman were relatively consistent with the observed numbers for D. mawsoni in the southern area of block ... the next season generally based on precautionary exploit rate of 4 % of the Chapman estimates. In ...

   Meeting Document : WG-FSA-16/32 Rev. 1 : Auteur(s): Delegations of Japan and South Africa

3. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2005/06

   combined catch limit of 3451 t. The subarea catch limit was almost reached in both Subarea 88.1 and 88.2 ... catch limit being slightly exceeded in the 2006 season. Concentration of effort within a smaller spatial ... are beginning to emerge concerning the size distribution of fish from the different areas in Subareas ... as well as the occurrence of small juveniles in much deeper water on the continental slope in Subarea ...

   Meeting Document : WG-FSA-06/29 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)

4. An investigation of integrated stock assessment methods for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL

   primarily based on the 2005 assessment implemented in the Generalised Yield Model (GYM) using survey data of ... mark-recapture data generally improves the confidence in the estimates of B0 and the recruitment series ... to appropriately accommodate this uncertainty in the estimate of long-term annual yield. Further ... approaches being used to estimate the key parameters. An important stage in the development of this ...

   Meeting Document : WG-FSA-SAM-06/14 : Auteur(s): A. Constable, S. Candy and I. Ball (Australia)

5. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2014–15

   slight reduction in mean age in SSRU 88.2H, but the data are very uncertain due to the paucity of otolith ... biological characteristics of the catch of Antarctic toothfish up to and including the 2015 season. In 2015 ... not to be indexing abundance. Length frequency distributions of Antarctic toothfish in the Ross Sea ... three years. The strong mode of smaller (90–120 cm TL) toothfish present in the Slope fishery from 2010 ...

   Meeting Document : WG-FSA-15/36 : Auteur(s): K. Large, S.M. Hanchet and S. Mormede (New Zealand)

6. Mackerel icefish biomass and distribution on the results of acoustic survey carried out in February–March 2002

   estimates of icefish were made by comparison an observed TS in situ histograms with the size composition of ... are also available. The bottom biomass resulted in the estimate of 62,328.0 tonnes. The sum acoustic ... estimate of the icefish biomass in the subarea of South Georgia amounted to 92.6 thous. tonnes. Nearly 30 ... % of this biomass was concentrated in the pelagic zone. If acoustic estimates of pelagic and bottom ...

   Meeting Document : WG-FSA-02/44 : Auteur(s): S.M. Kasatkina, V.Yu. Sunkovich, A.P. Malyshko and Zh.A. Frolkina

7. Change in environmental conditions of the Southern Ocean observed by satellites and data-assimilating models between 1981 and 2019

   Abstract:  We provide a summary of environmental change in the Southern Ocean over the period of ... movement north of the Subantarctic Front; (3) increasing chl-a and NPP in the Subantarctic Front and around ... the southern limit of the ACC except in the Ross Sea region; (4) decreasing chl-a and NPP in the Ross ... Sea sector and on the Antarctic continental shelf; (5) gradual loss of sea-ice in the Amundsen Sea and ...

   Meeting Document : WG-EMM-2019/39 : Auteur(s): M. Pinkerton

8. Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2003 winter and 2003/04 breeding season

   Abstract:  In the fourteenth consecutive winter of the survey at Bird Island, South Georgia, the ... classified as severe (71%). In contrast the sixteenth consecutive summer of reporting saw a decrease of 45 ... summer observations). Of the entanglements where the animal could be sexed, males made up the majority in ... increased effort in ensuring correct disposal of debris with the potential to entangle wildlife at sea ...

   Meeting Document : SC-CAMLR-XXIII/BG/14 : Auteur(s): Delegation of the United Kingdom

9. Proposal for the removal of night setting requirement for autoline vessels fishing in Division 58.5.2

   fishing in Division 58.5.2 to occur at any time of the day/night cycle. The proposal forms part of an ... results of the first two years longline fishing in 58.5.2: a total of 2.2 million hooks have been set and ... fishery in daylight and in summer suggest that the absence of seabird mortality in 58.5.2 is due to the ... low incidence of longline-vulnerable seabirds in winter, the minimum line sink rate and the use of ...

   Meeting Document : WG-FSA-04/73 : Auteur(s): G. Robertson and B. Baker (Australia)

10. Fish and squid in the diet of king penguin chicks, Aptenodytes patagonicus, during winter at sub-Antarctic Crozet Islands

    of the fish diet, constituting together 32 % by mass. The three main species of myctophids eaten in ... other myctophids, which are rarely consumed in summer, contributed 24% of the diet by mass in winter ... Electrona subaspera = 1.0%). The greater diversity of prey in winter suggests a more opportunistic feeding ... behaviour at a time probably marked by a change in prey availability. Both the known ecology of the fish and ...

    Meeting Document : WG-EMM-97/09 : Auteur(s): Cherel, Y., Ridoux, V., Rodhouse, P.G.

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