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Distribution and abundance of Antarctic krill (Euphausia superba) off East Antarctic (30–80°E) in January–March 2006
% of intervals registered densities of 10 g m-2 or less. Mean densities were highest in the waters to ... to WG-EMM in 2006 (WG-EMM-06/16) because a reanalysis of the data has resulted in amendments to the ... the south of the Southern Boundary of the Antarctic Circumpolar Current, particularly in waters to the ... transects surveyed. The majority of acoustic krill detections were in the top 100 m of the water column ...
Meeting Document : WG-EMM-07/33 : Autor(es): T. Jarvis, N. Kelly, E. van Wijk, S. Kawaguchi and S. Nicol (Australia)
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A hypothetical life cycle for Antarctic toothfish Dissostichus mawsoni in Antarctic waters of CCAMLR Statistical Area 88
of the smallest toothfish taken in the toothfish fishery. Our present hypothesis is that D. mawsoni ... in CCAMLR Statistical Subareas 88.1 and 88.2 spawn to the north of the Antarctic continental slope ... they mature, feeding in the slope region in depths of 1000–1500 m, where they gain condition before ... Abstract: Aspects of the reproduction, size distribution, and movements of Antarctic toothfish ...
Meeting Document : WG-FSA-07/35 : Autor(es): S.M. Hanchet, G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams (New Zealand)
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Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time
Paper Title: Calibration of an acoustic echo-integration system in a deep tank, with system gain ... sphere. It presents the results of an extensive calibration of a Simrad EK500 scientific echosounder with ... length (0.1, 0.3 and 1.0 ms), target depth (0.8 to 7.5 m), and time (149 days). The total range in TS ... gain, including the effects of temperature, standard sphere and time, is 2.9 dB. Gain values calibrated ... commonly used echosounder and a short pulse length, the error in mean target strength estimates of animals ... ), target depth (0.8 to 7.5 m), and time (149 days). The total range in TS gain, including the effects of ... between SA gain and TS gain. The total spread in SA gain, including the effects of temperature, standard ... interpretation of the data with respect to the many theoretical assumptions. The main contributions of bias in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 127–144 : Autor(es): Demer, D.A. and R.P. Hewitt
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Reports on biological information of toothfish with special reference to bycatch, depredation and spawning dynamics in Division 58.4.4 a & b by Shinsei maru No. 3 during 2008–14 seasons
SSRU 58.4.4bC. The depredation rate in weight of whales toward toothfish was estimated to be only 3.8 ... -4.8 % in SSRU 58.4.4bC during 2008-12 using the CPUE method, while the presence/absence of whales was ... not considered to be a significant parameter for the catch rate of toothfish in the generalized linear ... ; 58.4.4bB during 2008-14 using the CPUE method. The standardized CPUE in absence of whales in the SSRUs was ...
Meeting Document : WG-FSA-15/21 : Autor(es): K. Taki and T. Ichii (Japan)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands 1999/2000
the number of fur seals arriving at Signy Island in 1999/2000 was the highest observed since ... decreased (by 42%) since 1998/99. Over the past four years, fluctuations in the incidence of entanglement ... collar made of unknown material (20%). The proportion of animals entangled in packaging bands was the ... the environment or illegal un-monitored fishing activity. The decrease in the incidence of ...
Meeting Document : SC-CAMLR-XIX/BG/03 : Autor(es): Delegation of the United Kingdom
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A revised assessment of Patagonian toothfish in Subarea 48.4
Abstract: The stocks of toothfish in Subarea 48.4 are currently divided, for assessment purposes ... . eleginoides in Subarea 48.4. The main changes to the assessment are: the removal of D. mawsoni data and the ... , into northern and southern components. The northern component is assessed as a single species of D ... . eleginoides whilst the southern component is assessed as a combination of D. eleginoides and D. mawsoni. Both ...
Meeting Document : WG-SAM-13/24 : Autor(es): R. Scott (United Kingdom)
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Preliminary assessment of Patagonian toothfish in Subarea 48.4
Abstract: To date, the stocks of toothfish in Subarea 48.4 have been divided, for assessment ... revised assessment of D. eleginoides in Subarea 48.4. The main changes to the assessment are: the removal ... purposes, into northern and southern components. The northern component is assessed as a single species of ... D. eleginoides whilst the southern component is assessed as a combination of D.eleginoides and D ...
Meeting Document : WG-FSA-13/31 : Autor(es): R. Scott and V. Laptikohvsky (United Kingdom)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands 1997/98
seals wearing neck collars of man-made debris, half the number reported in 1996/97. All of the animals ... number of fur seals in total that came ashore during the season. Data are compared with results from a ... parallel study undertaken at Bird Island, South Georgia in 1997/98 where the number of reported ... had increased in occurrence since the previous season. The percentage of entanglements in packaging ...
Meeting Document : SC-CAMLR-XVII/BG/12 : Autor(es): Delegation of the United Kingdom
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Estimates of krill biomass with commercial significance in small-scale management units applying geostatistics techniques
Russian survey 2002 were used. Processing of the acoustic survey data in 2000-2002 was made applying ... biomass was 0.41985 mlt and 0.24 mlt respectively. The option “standing stock of krill in the SSMUs ... Abstract: The analysis of krill density and biomass distributions was made by the example of SGE ... geostatistical methods. It was revealed significant inter-annual and seasonal variability of the standing stock ...
Meeting Document : WG-EMM-06/36 : Autor(es): S.M. Kasatkina and P.S. Gasyukov (Russia)
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Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96
. The only significant relationship between inter-season trends in the number of pairs breeding at the ... period, while the other remained stable. Trends in the number of pairs breeding at the three rockhopper ... of macaroni penguins were significantly correlated in all three inter-colony comparisons over the ... were significantly correlated in only one of the three inter-colony comparisons. The greater coherence ... (Table 1). The mean number of eggs hatched per clutch varied between nil (in the case of complete ... /90. The lowest survival of chicks was 29% at Macaroni Bay in 1989/90. The overall mean value for ... correlated (Table 2). The mean number of eggs hatched per clutch varied between 0.41 at Trypot Fault in ... 1985/86 and 0.96 at Van den Boogaard River in 1990/91 (Figure 8). The overall mean number of eggs ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Autor(es): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford