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1. On assessing the size of the humped rockcod stock (Notothenia gibberifrons) in Subarea 48.3

   Abstract:  An adaptive approach was used to assess the Notothenia gibberifrons stock in Area 48.3 ... approach in this case involved using a target function in the form of the sum of square deviations in ... logarithms of observed and calculated biomass indices and resulted in an estimate of from 21.5 to 42.1 ... thousand tonnes for N. gibberifrons biomass in the 1989/90 season. It is thus possible to suggest a TAC of ...

   Meeting Document : WG-FSA-91/26 : Author(s): P.S. Gasiukov (USSR)

2. Uncertainty in green weight estimates from Norwegian krill fishing vessels

   an issue raised repeatedly within CCAMLR for a number of years, resulting in a modification to the C1 ... form implemented for the fleet in 2012. There are at present three Norwegian vessels operating in the ... krill fishery for Euphausia superba in the Antarctic. These vessels have in recent years contributed to ... therefore be important contributions to an estimate of total uncertainty in catch weight. Here, we present ...

   Meeting Document : WG-EMM-13/41 : Author(s): G. Skaret and T. Knutsen (Norway)

3. A summary of scientific observer deployments and data collection in the krill fishery during the 2011, 2012 and 2013 seasons

   Abstract:  The level of observer coverage in the krill fishery and  the  scientific sampling ... undertaken are summarised.  During 2012 all 12 of the vessels that participated in the krill fishery carried ... observers for some or all of their fishing operations. From a total of 860 vessel days of fishing in 2012 ... ‘days’. Krill length-frequency distributions showed that the greatest variability in size structure ...

   Meeting Document : WG-EMM-13/38 : Author(s): CCAMLR Secretariat

4. Krill biomass estimates for two survey boxes to the north east and north-west of South Georgia in January 1996: the beginning of a five-year monitoring program

   Abstract:  Acoustic surveys were carried out in January 1996 within two 100 x 80 km boxes located ... the first in a new five-year British Antarctic Survey programme initiated in part to monitor inter ... -annual variability in the abundance of the Antarctic krill Euphausia superba in the South Georgia region ... parallel transects, 80 km in length, running perpendicular to the major direction of shelf-break in the ...

   Meeting Document : WG-EMM-96/18 : Author(s): Watkins, J.L., Murray, A.W.A., Brierley, A.S.

5. Results of E.L. Holmberg 1997 fish survey in Subarea 48.3

   Abstract:  The survey comprised 51 bottom trawl hauls taken in subarea 48.3. Of these, one was ... discarded due to net damage. About 80% of the hauls were taken in the shelf of South Georgia Islands (41 ... ) and the remaining in the Shag Rocks area (9); 64% of the hauls were intended as replicates of the ... position of hauls in the previous cruises. Mean densities were obtained considering the spatial aggregation ...

   Meeting Document : WG-FSA-97/47 : Author(s): Prenski, B., Calcagno, J., Marschoff, E.R., Gonzalez, B.

6. Krill catch distribution in relation to predator colonies 1987 to 1992

   Abstract:  The distribution of krill catches in relation to land-based predator colonies ... , calculated from CCAMLR fine-scale data, is shown for Subareas 48.1 and 48.2. The pattern of catches in 1992 ... -distance’). Although data reporting was not complete for Subarea 48.2 in 1992, it was estimated that 38% of ... the total catch from this subarea was taken in the critical period distance, compared to 5 to 78% in ...

   Meeting Document : WG-KRILL-93/10 : Author(s): Secretariat

7. Results of a CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2013

   first survey was completed in February (Hanchet al. 2012a). In this paper we provide the results of the ... second survey in the time series. The objectives of this second survey were: To carry out a longline ... survey to monitor subadult toothfish in the southern Ross Sea (strata A–C) using standardised gear in a ... standardised manner; and To sample additional experimental stations in adjacent areas to identify areas of high ...

   Meeting Document : WG-SAM-13/32 : Author(s): S.J. Parker, S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and R. Sarralde (Spain)

8. Oceanological factors affecting formation of mackerel icefish aggregations in the South Georgia area during different seasons of the year

   Abstract:  In wintering period icefish do not form aggregations, is feeding inactively and ... disperse at the depths more than 250 m within rather narrow temperature range (1.6-1,7ºC). In this period ... the water temperature is a limiting factor restricting fish distribution. In spring-summer icefish are ... feeding at the water temperature from 0.0ºC to 1.9ºC in the South Georgia area and to 2.0ºC near Shag ...

   Meeting Document : WG-FSA-05/76 : Author(s): Zh.A. Frolkina (Russia)

9. Variation in echosounder calibration with temperature and some possible implications for acoustic surveys of krill biomass

   krill surveys, and exhibits acceptable temporal stability in system gain settings. Between Antarctic ... seasons, this echo-sounder has additionally been calibrated in temperate European waters and, under these ... conditions, calibrated gain settings differ markedly from those applied in the Antarctic, even after ... appropriate adjustments for differences in sound speed between locations have been made. Here we present ...

   Meeting Document : WG-EMM-97/52 : Author(s): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.

10. Preliminary analyses of an ectoparasite Eubrachiella antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea

    antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea. New Zealand Ministry ... fins and in the buccal cavity of 621 large D. mawsoni (mostly 120-150 cm). Up to five D. mawsoni per ... set were examined for parasites in Small Scale Research Units (SSRUs) 88.1C, 88.2E and 88.2F; and two ... fish per set in SSRUs 88.1H- 88.1J. Up to 15 E. antarctica, one from each of the first fifteen sets in ...

    Meeting Document : WG-FSA-06/28 : Author(s): P.J. Smith, A. McKenzie and L. Tubbs (New Zealand)

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