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1. Laboratory target strength measurements of free swimming Antarctic krill (Euphausia superba)

   single animal insonifications. For mean length classes in the range [29.6, 36.2] mm the median single ... -animal target strengths are in the range [-76.7,-71.8] dB. Monte Carlo computer simulations were used to ...

   Meeting Document : WG-EMM-97/75 : Auteur(s): Pauly, T., Penrose, J.D.

2. In situ target strength measurements of Antarctic zooplankton (Euphausia superba and Salpa thompsoni) at 120 khz and 200 khz, corroboration of scattering models, and a statistical technique for delineating species

   midwater trawl was used to sample the zooplankton populations and animal length-frequency data were ... scattering is from each animal's spheroidal nucleus. Consistent with the measurements of encaged krill ... scattering models and empirically derived distributions of animal sizes, a technique is developed for ...

   Meeting Document : WG-Krill-94/12 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)

3. Demography of Antarctic krill in the Elephant Island area (Antarctic Peninsula) during austral summer 2001

   absolute index was RI1 = 131.4 * 1000 m-3, which is among the highest values for the past 20 years. The ... small size classes, one year old juvenile krill was found. Krill density was significantly higher than ... proportional recruitment index for the entire survey area for the 1999/2000 year class was R1 = 0.573, and the ... success of the 2000/01 year-class. The spatial extent of the station grid is discussed in the light of a ...

   Meeting Document : WG-EMM-01/10 : Auteur(s): V. Siegel (Germany), B. Bergström (Sweden), U. Mühlenhardt-Siegel (Germany) and M. Thomasson (Sweden)

4. Evaluation on the performance of echosounder on a fishing vessel using maximum seabed backscattering

   and 2018) collected at a relatively fixed location with bottom depth around 200 m were used to ... , respectively. However, ANOVA analysis indicated that there was no significant difference among years at both ...

   Meeting Document : SG-ASAM-18/06 : Auteur(s): X. Wang, X. Yu and X. Zhao

5. Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1994 winter and 1994/95 pup-rearing season

   previous year. The proportion of adult animals affected (20%) was slightly lower than 1994. The proportion ... of females involved (40%) was 26% less than the previous year. The incidence of severe injury (30 ... 1994 winter. In the 1994/95 summer the number of entangled seals (20) was also the lowest yet recorded ... %) was 46% less than the previous year. Author(s):  Delegation of the United Kingdom Title:  Entanglement ...

   Meeting Document : SC-CAMLR-XIV/BG/08 : Auteur(s): Delegation of the United Kingdom

6. Observation on interactions between marine mammals and krill mid-water trawl

   carried out onboard the Chinese krill fishing vessel Fu Rong Hai during the 2018/19 fishing season. The ... and krill mid-water trawl Microsoft Word File:  sc-38-bg-20.docx Approval:  Approved Secretariat ...

   Meeting Document : SC-CAMLR-38/BG/20 : Auteur(s): Y. Ying, G. Fan, X. Zhao, J. Zhang, X. Wang and J. Zhu

7. On the state of Champsocephalus gunnari stock in Subarea 48.3 and methods of its assessment

   stock assessment was repeatedly raised on the meetings of Working Group on Fish Stock Assessment (WGFSA ... surveys in 1990). As a result, over more than 10 years bottom surveys pervert the real state of near ...

   Meeting Document : WG-FSA-00/45 : Auteur(s): K. Shust, V. Senioukov, P. Gasiukov and A. Kozlov (Russia)

8. Report on fish by-catch on exploratory fishing in Divisions 58.4.1 and 58.4.2

   undertaken in Divisions 58.4.1 and 58.4.2 during the 2012 to 2018 seasons. Fish by-catch comprised 14 species ... or groups of species. In 2018, by-catch represented 12% of the total catch (43 tonnes over 307 tonnes ... eastern blocks where Macrourus CPUE also increased in the last 3 years. Macrourus CPUE was 23kg/1000 hooks ...

   Meeting Document : WG-FSA-18/28 : Auteur(s): C. Péron, P. Yates, D. Maschette, C. Chazeau, P. Ziegler, D. Welsford, N. Gasco and G. Duhamel

9. Use of a population model to assess the impact of longline fishing on wandering albatross populations

   rate of 2.29% per year, which concurs with global population trends. Sensitivity analyses of model ... population. Also, because wandering albatrosses are long-lived, population growth rates take approximately 30 ... time lag of 5-10 years before further decreases in population numbers are reflected in the breeding ... -50 years to stabilize after a perturbation. Consequently, caution must be exercised when interpreting ...

   Meeting Document : WG-IMALF-94/08 : Auteur(s): Coleen L. Moloney, John Cooper, Peter G. Ryan and W. Roy Siegfried (South Africa)

10. A preliminary assessment and revised growth model of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2017 random stratified trawl survey

    , abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ... 2018/19 season respectively satisfied the CCAMLR decision rules. Given their apparent plasticity in ...

    Meeting Document : WG-FSA-17/22 : Auteur(s): D. Maschette, P. Burch, P. Yates and D. Welsford

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