Search results

1. Comparison of census methods for black-browed albatrosses breeding at the Ildefonso Archipelago, Chile

   Abstract:  Although a breeding population of black-browed albatrosses has been known to exist at ... scientifically defendable methods. To estimate population size, and examine the accuracy and practicality of ... pairs of black-browed albatrosses bred at the Ildefonso archipelago. After the Falkland Islands/Malvinas ... , South Georgia and Diego Ramirez, the Ildefonso Archipelago holds the fourth largest population of black ...

   Meeting Document : WG-FSA-06/12 : Author(s): G. Robertson, K. Lawton (Australia), C.A. Moreno (Chile), R. Kirkwood (Australia) and J. Valencia (Chile)

2. Using carapace measurements to determine the sex of Antarctic krill (Euphausia superba)

   validating the use of discriminant functions to determine sex of krill based on carapace length and width and ... derived from mature krill in years following significant recruitment events with large proportions of ... immature krill resulted in significant bias towards male krill and an overestimation of krill length. We ... measurements to determine the sex of Antarctic krill (Euphausia superba) Approval:  Approved ...

   Meeting Document : WG-EMM-05/26 : Author(s): J.D. Lipsky, M.E. Goebel, C.S. Reiss and V. Loeb (USA)

3. Development of the krill stock in the elephant island region during the 1996/97 season

   . Krill and salps were present at almost all of the stations, other epipelagic zooplankton species were ... /96, the present juvenile age group 1 +, does not repeat the very successful recruitment of the ... good recruitment of this year-class. At the same time the salp abundance was above average, but still ... one order of magnitude lower than in the salp bloom years 1992/93 and 1993/94. Author(s):  Siegel, V ...

   Meeting Document : WG-EMM-97/16 : Author(s): Siegel, V.

4. Demography of Antarctic krill in the Lazarev Sea (Subarea 48.6) and the Elephant Island area (Subarea 48.1) in 2004

   after taking substantial day/night differences in the catches into account. Recruitment indices of one ... and high, but different values for R2. Spatial distribution of krill density and size/age classes is ... discussed for the Lazarev Sea. Information are given on the development of maturity stages and “re ... -juvenation processes” after the spawning season. Distribution and density of krill calyptopis and furcilia ...

   Meeting Document : WG-EMM-04/23 : Author(s): V. Siegel (Germany), V. Loeb (USA), B. Bergström (Sweden), S. Schöling (Germany), M. Haraldsson (Sweden), J. Kitchener (Australia), M. Vortkamp (Germany)

5. 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

   vicinity of Heard Island and the McDonald Islands during April 2017. This paper provides an updated growth ... , abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ... estimates of Welsford (2010), however Generalized Yield Model projections indicated that the updated growth ... parameters resulted in only a small impact on yield.  Catches of 526 t in the 2017/18 season and 395 t in the ...

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

6. Simulating performance of trend analysis for setting catch limits in exploratory toothfish research plans

   qualitative analysis of trends in biomass estimated in each research block and a series of simple decision ... developed and tested as a matter of priority for WG-SAM-18. We formalised and codified the rules and ... developed a simulation approach to examine the performance of the trend analysis rules for scenarios with ... and S. Mormede Title:  Simulating performance of trend analysis for setting catch limits in ...

   Meeting Document : WG-SAM-18/23 : Author(s): S. Hoyle, S. Parker, A. Dunn and S. Mormede

7. Biomass estimates of Antarctic krill based on survey conducted by the Chinese fishing vessel FV Fu Rong Hai during the 2019 Area 48 survey

   survey of Area 48 (2019 Area 48 survey), the Chinese krill fishing vessel F/V Fu Rong Hai conducted the ... 10 th February 2019. Implementation and preliminary results on the estimates of krill biomass density ... shown that mean krill biomass density was 80.7 g m-2 with a CV of 13.6% in the survey area. However, the ... krill biomass estimates might be updated pending on the outcome of krill length clustering analysis and ...

   Meeting Document : SG-ASAM-2019/07 : Author(s): X. Wang, X. Yu, X. Zhao, J. Zhang, G. Fan, J. Zhu and Y. Ying

8. Comparison of krill density estimated with swarm-based and dB-difference method using acoustic data collected by Chinese fishing vessel participating in the 2019 Area 48 survey

   Abstract:  To address the effect of various identification methods on krill biomass estimates ... vessel F/V Fu Rong Hai during the 2019 Area 48 survey. Identification window of swarm-based template were ... ). Identification window of dB-difference method were set to [2 16] and [0.4 12] respectively. Distributions of ... conclusion. Author(s):  X. Yu, X. Wang, J. Zhang and X. Zhao Title:  Comparison of krill density estimated ...

   Meeting Document : SG-ASAM-2019/06 : Author(s): X. Yu, X. Wang, J. Zhang and X. Zhao

9. A GIS OF CCAMLR SPATIAL MANAGEMENT AREAS AND CONSERVATION MEASURES

   GIS facilitates easy mapping of CCAMLR’s spatial management framework and associated conservation ... measures. This paper describes the structure of the GIS database and provides example outputs. The utility ... of the GIS will be maximised by ensuring that it is kept up to date and easily accessible to ... OF CCAMLR SPATIAL MANAGEMENT AREAS AND CONSERVATION MEASURES Approval:  Approved ...

   Meeting Document : WG-EMM-11/22 : Author(s): P. Fretwell, S.M. Grant and S.L. Hill (UK) and S. Parker (New Zealand)

10. The population of Mirounga leonina at stranger point (25 de Mayo – King George I.)

    Abstract:  This paper includes information on the trend of the elephant seal population at ... male component was affected in 1987 (r=-0.463). A possible influence of El Niño Southern Oscillation ... of Argentina Title:  The population of Mirounga leonina at stranger point (25 de Mayo – King George I ...

    Meeting Document : SC-CAMLR-VII/BG/33 : Author(s): Delegation of Argentina

Pages