Résultats de la recherche
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Krill biomass in Area 48 and Area 58: recalculations of FIBEX data
Paper Title: Krill biomass in Area 48 and Area 58: recalculations of FIBEX data Abstract ... / Description: FIBEX acoustic and length frequency data held in the BIOMASS database were used to provide ... ) 30'W 2S'W 20'W Figure 1: FIBEX survey areas and CCAMLR statistical sub areas in the West Atlantic ... WG-KRILL-92/20 KRILL BIOMASS IN AREA 48 AND AREA 58 ... densities reported in Anon. (1986) were derived using a TS value of -68.10 dB for a mean animal length of ... ., Siegel, 1988; Everson, in press); and (ill) year-to-year variability is hard to assess given that ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 157–181 : Auteur(s): Trathan, P.N., D.J. Agnew, D.G.M. Miller, J.L. Watkins, I. Everson, M.R. Thorley, E. Murphy, A.W.A. Murray and C. Goss
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Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia
Paper Title: Investigation of bias in the mark–recapture estimate of toothfish population size at ... uneven distribution of tag placements and recapture effort, on bias in the Petersen estimator of ... ) and upwards in a low-density box, so that they tended to be retained in high-density boxes. The model ... and/or fishing effort; by ‘ideal’, it is meant that either tagging or fishing effort was in direct ... of toothfish typically move only 20–30 km each year (Marlow et al., 2003). This paper investigates ... years (40, 41, 12, 5 and 2% of 165 fish respectively). Tags recaptured in the year in which they were ... tags and years. The third step is the tag–recapture process in year t. As previously explained, the ... in that year 40 W 43 3 0' W 48 0 0' W M an ag em en t A re a A (W es t S ha ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 47–63 : Auteur(s): Agnew, D.J., G.P. Kirkwood, J. Pearce and J. Clark
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Schedule of Conservation Measures in Force 1993/94
additional series of 20 meshes selected in accordance with Article 3 shall be measured. The mesh size shall ... shall form a series of 20 consecutive meshes chosen in the direction of the long axis of the net. 2 ... Sequence of Inspection Procedure 1. The inspector shall measure one series of 20 meshes, selected in ... CONSERVATION MEASURE 30/X1 Net Monitor Cables The use of net monitor cables on harvesting vessels in the ...
Document : Site Section: Publications
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Selectivity of commercial and research trawls in relation to krill
more large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in ... Paper Title: Selectivity of commercial and research trawls in relation to krill Abstract ... mean length in catches made by both trawls was ∆L = 6.2 mm. Statistically significant variability in ... krill length composition was observed between catches made by the research trawl, while in commercial ... large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in mean ... expressed towards Yu. V. Kadilnikov for his assistance in preparing this article. REFERENCES Greene ... COMMERCIAL AND RESEARCH TRAWLS IN RELATION TO KRILL S.M. Kasatkina Atlantic Research Institute of Marine ... length in catches made by both trawls was AL = 6.2 mm. Statistically significant variability in krill ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 161–169 : Auteur(s): Kasatkina, S.M
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... fulfills the objectives of Article II and is robust against the uncertainties inherent in the stock ... 1997 cohort through the population and relatively weak recruitment in 1999 and 2000. The 1+ fish ... evident in the survey were not fully sampled and as such are not included in the assessment. Estimates of ...
Meeting Document : WG-FSA-03/32 : Auteur(s): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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Fishery Report 2014: Exploratory fishery for Dissostichus spp. in Subareas 88.1 and 88.2
Description / Abstract: Fishery Report 2014: Exploratory fishery for Dissostichus spp. in ... Dissostichus spp.) are shaded. Throughout this report the CCAMLR fishing season is represented by the year in ... to 30 November 2014). Fishery Report 2014: Exploratory fishery for Dissostichus spp. in ... Subareas 88.1 and 88.2 was part of a three-year experiment starting in 2006 when the SSRUs between 150°E ... includes 20 tonnes for research fishing in 2007 and 10 tonnes for research fishing in 2011 and 2012. * IUU ...
Document : Site Section: Publications
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Moulting interval and growth of juvenile Antarctic krill fed different concentrations of the diatom Phaenodactylum tricornutum in the laboratory
0.047 mm day –1, which is too slow to support the hypothesised 2-year life-span of this animal in the ... concentrations of the diatom Phaenodactylum tricornutum in the laboratory Abstract / Description: Juvenile ... field. Growth conditions of krill in the Southern Ocean are discussed, with special reference to the ... available food concentration. Note: The full text of this paper will be published under the above title in ... slow to support the hypothesised 2-year life-span of this animal in the field. Growth conditions of ... OF JUVENILE ANTARCTIC KRILL FED DIFFERENT CONCENTRATIONS OF THE DIATOM PHAENODACTYLUM TRICORNUTUM IN ... krill in the Southern Ocean are discussed, with special reference to the available food concentration ... . Note : The full text of this paper will be published under the above title in Polar Biology (1987 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 223-225 : Auteur(s): Ikeda, T. and P.G. Thomas
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Fishery Report 2013: Exploratory fishery for Dissostichus spp. in Subareas 88.1 and 88.2
Description / Abstract: Fishery Report 2013: Exploratory fishery for Dissostichus spp. in ... Dissostichus spp.) are shaded. Throughout this report the CCAMLR fishing season is represented by the year in ... 30 November 2013). FISHERY REPORT 2013: EXPLORATORY FISHERY FOR DISSOSTICHUS SPP. IN ... Subareas 88.1 and 88.2 was part of a three-year experiment starting in 2006 when the SSRUs between 150°E ... fishing in 2007, 80 tonnes in 2012, and 49 tonnes in 2013. In 88.2, the catch limit includes 20 tonnes ...
Document : Site Section: Publications
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LETTER TO DRS REID, WATTERS AND JONES IN REGARD TO “DISAPPEARANCE OF TOOTHFISH FROM MCMURDO SOUND”
needs to be addressed without significant delay. Together we have worked in the Ross Sea and vicinity ... for more than 300 person-years, and in the process have gained considerable knowledge about the Ross ... in the EMM submitted document, “Decline of the Antarctic toothfish and its predators in McMurdo Sound ... first sign that the Ross Sea ecosystem is being irreparably altered, and the 40-50 year time series of ...
Meeting Document : WG-EMM-08/20 : Auteur(s): D.G. Ainley, S.F. Ackley, K. Arrigo (USA), G. Ballard (New Zealand), J.P. Barry (USA), L. Blight (Canada), P. Broady, B. Davison (New Zealand), P. Dayton, A.L. DeVries, K. Dugger, J.T. Eastman, S.D. Emslie (USA), C. Evans (New Zealand), R.A. Garrott, G. Hofmann, S. Kim, G. Kooyman, S.S. Jacobs (USA), G. Lauriano (Italy), A. Lescroël (France), D.R. MacAyeal (USA), M. Massaro (New Zealand), S. Olmastroni (Italy), P.J. Ponganis (USA), E. Robinson (New Zealand), D.B. Siniff, W.O. Smith (USA), I. Sti
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Growth and age/length structure of populations of Notothenia (Lepidonotothen) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean
paper. It was found that during the first years of life the linear growth rate is 3 to 5 cm per year. It ... ) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean Abstract / Description ... ) squamifrons), inhabiting areas of the Ob and Lena Banks and the Kerguelen Island Shelf, are presented in this ... g at the banks and 153 to 188 g in the Kerguelen Island area were recorded for fish at age 6 to 12 ... composition of N. squamifrons in the Ob Bank area. 134 30 r 20 ~ 10 20 to 30 20 10 20 10 ... of N. squamifrons in the Lena Bank area. 135 136 20 to 1969 n • 425 20 1970 ~ 30 ... from 3 to 5 cm per year in the first years of life to 1 cm in the last years, dependent upon the area ... 20 to 36 cm in length, aged 4 to 12 (T =8 years) and on the Lena Bank - 22 to 32 cm in length, aged ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 123–139 : Auteur(s): Zaitsev, A.K.