Résultats de la recherche
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Krill biomass estimates for South Georgia, December and January 1996/97
conducted within two 80 x 100 km areas over the shelf-break to the north-east and north-west of South ... backscattering strength at 120 and 38kHz (mvbsl20 kHz- mvbs38kHz between 2 and 12 dB indicative of krill). Mean ... volume backscattering strengths at 120 kHz were scaled by the appropriate TS value to determine mean ...
Meeting Document : WG-EMM-97/48 : Auteur(s): Goss, C., Watkins, J.L., Brierley, A.S.
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Annual variation in the timing of reproduction in Antarctic fur seals (Arctocephalus gazella) at Bird Island, South Georgia
usually started when 80% or more of potential territory sites were occupied by males. Cows arrived ... Abstract: The arrival of Antarctic fur seals at a breeding beach on Bird Island. South Georgia ... : Annual variation in the timing of reproduction in Antarctic fur seals (Arctocephalus gazella) at Bird ...
Meeting Document : WG-CEMP-90/39 : Auteur(s): C.D. Duck (United Kingdom)
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Stock structure of Antarctic toothfish in Statistical Area 88 and implications for assessment and management
the movement patterns and linkages of Antarctic toothfish in the 80–120 cm size range, throughout the ... biological stocks with limited mixing, especially at adult stages: a Ross Sea Region stock and an Amundsen ...
Meeting Document : WG-SAM-14/26 : Auteur(s): S.J. Parker, S.M. Hanchet and P.L. Horn (New Zealand)
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Fishery Report: Dissostichus eleginoides Prince Edward Islands South African EEZ (Subareas 58.6 and 58.7)
One vessel is currently fishing. The expected final catch is expected to be in the region of 80 ... Islands vicinity. CCAMLR Science, 16: 33–69. 6 TOP 58.6 & 58.7 7 Brandão, A., D.S ... toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ. CCAMLR Science, 9: 11–32 ... LAYOUT OF CCAMLR DOCUMENTS AND REPORTS ...
Document : Site Section: Publications
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Fishery Report 2018: Dissostichus eleginoides and D. mawsoni South Sandwich Islands (Subarea 48.4)
D. eleginoides caught in Subarea 48.4 shows a shifting mode from 80–100 cm at the beginning of the ... research program to the south of the established fishery in Subarea 48.4; this research was continued in ... time series to 105–140 cm in 2013–2016 (Figure 1b). A second mode of smaller fish (60–80 cm) becomes ... ). (a) (b) 4 Tagging 15. In 2005, the UK conducted a pilot tagging program using a ...
Document : Site Section: Publications
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Fishery Report 2017: Dissostichus eleginoides and D. mawsoni South Sandwich Islands (Subarea 48.4)
. eleginoides caught in Subarea 48.4 shows a shifting mode from 80–100 cm at the beginning of the time series ... research program to the south of the established fishery in Subarea 48.4 and conducted seven hauls ... to 105–140 cm in 2013–2016 (Figure 1b). A second mode of smaller fish (60–80 cm) becomes evident in ... ) (b) 4 Tagging 15. In 2005, the UK conducted a pilot tagging program using a longline ...
Document : Site Section: Publications
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Relationships between the distribution of whales and Antarctic krill Euphausia superba at South Georgia
abundance and mean krill density at the largest spatial scale examined (80 x 100km). At progressively ... and krill was examined at a number of spatial scales. There was a positive relationship between whale ... krill and whale distribution, particularly at smaller scales, may require information on krill swarm ... Antarctic krill Euphausia superba at South Georgia Approval: Approved ...
Meeting Document : WG-EMM-99/30 : Auteur(s): K. Reid, A.S. Brierley (United Kingdom) and G.A. Nevitt (USA)
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UPDATED BIOLOGICAL PARAMETERS FOR THE ANTARCTIC STARRY SKATE, AMBLYRAJA GEORGIANA, FROM THE ROSS SEA
proportion released in good condition are in the range 50–80%, depending on assumptions about whether skates ... relationships differ significantly. Better estimates of median length at maturity were made possible through a ... examined in the laboratory. There was no significant difference between the median length at maturity for ...
Meeting Document : WG-FSA-08/20 : Auteur(s): M.P. Francis and S. Mormede (New Zealand)
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Net sample validation of acoustic techniques used to identify and size Antarctic krill
collected with an RMT8. Around 80 % of the targets thought to be krill on the basis of their appearance on ... species groups has been attempted using differences in echo strength at two acoustic frequencies (ΔMVBS ... (MVBS) data at 120 and 38 kHz were collected with a Simrad EK500 echo sounder, and net samples were ... echo-charts were also identified as krill on the basis of their difference in backscatter at 38 and 120 ...
Meeting Document : WG-EMM-97/46 : Auteur(s): Watkins, J.L., Brierley, A.S.
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The use of morphometric parameters for the determination of sex of Adelie penguins
. However, to be 100% certain of the sex of birds, 80% of the total measured sample would have to be ... morphometric parameters was examined for breeding birds of known sex at Bechervaise Island near Mawson Station ... discriminant score be determined for a single operator and at each breeding colony to reduce these sources of ...
Meeting Document : WG-CEMP-91/5 Rev. 1 : Auteur(s): K.R. Kerry, D.J. Agnew, J.R. Clarke and G.D. Else (Australia)