Search results

1. Krill biomass in Area 48 and Area 58: recalculations of FIBEX data

   ) 50kHz TS = 19.9logl- 90.5 (Anon., 1986 - p. 46) 200kHz The Kaiyo Maru mean weight densities reported ... in Anon. (1986) were derived using a TS value of -68.10 dB for a mean animal length of 41.4 mm ... an adjustment factor (-10 • log(120/50) = -3.80) to provide the following revised TS/length equation at 50 kHz ... kHz. TS = 34.8510g1 - 125.23 For the Kaiyo Maru, with a mean animal length of 41.4 mm, this gives ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 157–181 : Author(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

2. Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data

   recueillies par des navires de recherche/de prospection au debut des annees 80. Ces exemples soulignent le ... B Ha4aJIe 80-x rO,llOB COBeTCKHMH HaY4Ho-HCCJIe,llOBaTeJIbCKHMH H nOHCKOBbIMH cY,llaMH. IIpHBe,lleHHble ... fisheries data. At the meeting of the Scientific Committee for the Conservation of Antarctic Marine ... by research or survey vessels (both navigational log-book and fishing logbook information) can be effectively ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 283–322 : Author(s): Mangel, M.

3. Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia

   ok s) 0 10 20 30 40 50 60 70 80 90 0 50000 100000 150000 200000 250000 est. population ... or t (1 00 0 ho ok s) 0 10 20 30 40 50 60 70 80 90 0 50000 100000 150000 200000 250000 est ... (n) 0 50000 100000 150000 200000 250000 P ro je ct ed ta gs (n ) 120 100 80 60 40 20 0 90 ... . 50 20 03 20 04 Release positions for animals tagged in that year 40 W 43 ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 47–63 : Author(s): Agnew, D.J., G.P. Kirkwood, J. Pearce and J. Clark

4. Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides and Champsocephalus gunnari

   D. eleginoides. Dates Observer Total longline sets Mortality observed: white-chinned petrel black-browed ... of birds would sit behind the propeller wash, about 80 m astern of the ship. From there birds would move ... between this cable and the headline of the net. The cause of death of birds found in the bag of the net ... at least seven of the total of 17 bird deaths, including all of the albatross deaths observed, were caused ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 93–99 : Author(s): Williams, R. and D. Capdeville

5. Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   . Prolonged oogenesis has been mentioned in sev- eral studies on reproduction in D. mawsoni, though ... year. Fish lengths for either method were adjusted using the sample date, and adjusted down or up ... - tion models (Dunn et al., 2009). Antarctic fish typically mature to spawn when reaching 55–80 ... , which may be part of the selection pressure to pro- duce large yolky eggs. Alternatively, it may imply ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Author(s): Parker, S.J. and P.J. Grimes

6. A hybrid approach to acoustic classification and length estimation of krill

   strength in situ, an acoustic resolution volume must be based on a single animal measurement. For small ... Sea (1989/90). The new method extracts information on species and size primarily from the acoustic ... used to design and test the method were collected during three surveys in the Ross Sea (1989/90, 1997 ... (C(N,2) = binomial coeffi cient). These estimates can be com- bined and estimation of the mean animal size ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Author(s): Azzali, M., I. Leonori and G. Lanciani

7. Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3

   for the simulation testing of procedures, and an operational definition of CCAMLR Article II to provide criteria ... interpretation of Article II is proposed: the primary objective is to prevent the expected lowest biomass ... , and an operational definition of CCAMLR Article II to provide criteria against which to assess procedure performance ... in the region is developed for simulation testing purposes. A provisional operational interpretation of Article ... of procedures, and an operational definition of CCAMLR Article 11 to provide criteria against which to assess ... interpretation of Article II is proposed: the primary objective is to prevent the expected lowest biomass ... une base pour les tests par simulation des procedures, et une definition operationnelle de l'Article ... des raisons de tests par simulation. U ne interpretation provisoire et operationnelle de l'Article II ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 189–219 : Author(s): Butterworth, D.S.

8. Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?

   the principles set out in Article II of the Con- vention on the Conservation of Antarctic Marine Living ... CCAMLR to meet its objectives for the wider ecosystem. However, these objectives are ambigu- ous ... of a set of conservation criteria for the krill stock intended to help CCAMLR to meet its objectives ... smaller management units’ and to help CCAMLR to meet its objectives, providing that the underlying ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Author(s): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins

9. Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel

   level of 620 000 tonnes and the historic maximum catch of over 500 000 tonnes. The most up-to-date ... freezers (~ –80°C), will also need to be considered. Adequate working space for data analysis is essen ... - tics (ICES, 1995). Noisy vessels might impact the natural behaviour of the target animals and thus ... vessels to pro- duce data of research vessel quality. Running such surveys during the fishing season ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Author(s): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins

10. Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in the southwestern Atlantic

    ) mentioned that D. eleginoides has been caught around the Crozet Islands, at depths of 90 to 1 020 ... 5.70 5.98 0.92 1.90 1 .80 0.78 Medium size (cm) Total number of stomachs (X> of full stomachs ... Toothfish 70-79 80-89 90-99 100-109 110-1 19 120-180 TL (cm) Figure 5: Stomach fullness degree versus ... . The longliner Isla Sofia operated a main line of 20 000 m, with branch lines each with 90 hooks (model 'Ancora ...

    Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 105–124 : Author(s): García de la Rosa, S.B., F. Sánchez and D. Figueroa

Pages