Résultats de la recherche

1. Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island

   at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at night. In ... ;, () 20 30 40 50 60 ~~~~~ ~ ~~~~£1 " " " " Body length ( mm ) Maturity stages Figure 5: Body length and ... , tending to be at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at ... 50 a 100 m de jour alors qu'il frequente une couche moins profonde, de 20 a 50 m de nuit. Au large ... Ha r JIy6HHe 50-100 M, a HOqblO 6JIH)I{e K nOBepxHocTH B ,l(Hana30He 20-50 M. B HarYJIbHbIX apeaJIax ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 273–285 : Auteur(s): Ichii, T., H. Ishii, J.L. Bengtson, P. Boveng, J.K. Jansen and M. Naganobu

2. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer

   sampling surveys for krill were conducted in the krill fishing ground north of the South Shetland Islands ... were generated, suggesting that hydrodynamic convergence might be responsible for accumulation of krill ... been lower than expected until early February 1991. As for maturity stages of krill, spawning krill ... neritic and nearshore zones. This indicates that slope frontal features may be important for the formation ... 1991 (Figure 1). Transects ran in an offshore-inshore direction with 20 n miles between the transects ... NOAA-A satellites. Typically, twelve locations per day were recorded for each buoy with an accuracy ... ) 188 where Bi = biomass for i-th zone Ai = area for i-th zone. The total biomass (B t) for an ... about 30% of the stock. According to the growth curve for krill (Siegel, 1987), length modes of 45 mm ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu

3. The use of analysis of penguin stomach contents in simultaneous study of prey and predator parameters

   proposed as being the correct approach for analysis because lack of independence between krill specimens ... type of analysis. This method of analysis demonstrated that there was an insignificant F-statistic for ... -.. "'" .' .'"."."." " ....... "--.... '" .. " .. " ............ " . --. " .. ""." .......... " ... "." ..... " .... -.. " .. --." .. --............... ' ... " ---......... " ............. " ..... -.. " .. ,,' ...... . .._ ...... o IL-______________ L-______________ ~ ______________ J-______________ ~ o 10 20 30 40 dec 13 ... for analysis because lack of independence between krill specimens found in the stomach of a given ... possible consequences for predators of changes in prey parameters. Such a simultaneous approach is ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 367–375 : Auteur(s): Marschoff, E. and B. González

4. Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile

   industrial fishing vessels between April 2002 and March 2003. For the 180 hauls monitored, the evidence of ... support the hypothesis that the richest fishing grounds are also traditional feeding grounds for sperm ... 95% US$47 302–153 745) for the whole fleet, with a mean loss per set of US$138 (CI 95% US$74.76–249.3 ... 80 90 E ffo rt ( ha ul s ob se rv ed ) (a) 0 5 10 15 20 25 30 35 40 45 Jan Feb ... 20 30 40 50 60 70 80 90 E ffo rt ( ha ul s ob se rv ed ) (b) (a) (b) Hucke ... Sep Oct Nov Dec Month S pe rm w ha le s (in di vi du al s) 0 10 20 30 40 50 60 70 ... le ng th ( m m ) (a) y = 6.2936x + 173.06 R2 = 0.8552 0 5 10 15 20 25 30 40 50 60 70 ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Auteur(s): Hucke-Gaete, R., C.A. Moreno and J. Arata

5. Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?

   depth of longlines for given distances astern. This increase in depth is minor and unlikely to result in ... ) the depth of longlines for given distances astern. This increase in depth is minor and unlikely to ... highest in the world for demersal longline fisheries (Weimerskirch et al., 2000; SC-CAMLR, 2001 ... tension several metres astern (depending on sea state) and at an angle to the sea surface. Tension ... astern is thought to delay line sinking and keep baits available to seabirds for longer. Although ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Auteur(s): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith

6. Optimization of survey sampling design in the detection of interannual variability and prey size selectivity in the diet of penguins

   results of a survey of prey size in Adélie penguins, sampling designs intended for the detection of inter ... inter-annual variation for mean prey size is fixed at 10%; the test power is taken as 0.9 and Type I ... values for the variance components and their 80% confidence intervals have been extracted from Table 3 ... 20 minutes; and the laboratory time was one person working for one hour to sort and clean the well ... errors in a ratio between variance components. For this reason, 80% confidence limits were used in order ... in an iterative procedure (Bliss, 1967, p. 259), the minimal value of DD yielding a 90% confidence ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 551–559 : Auteur(s): Marschoff, E. and B. Gonzalez

7. Feeding patterns of nine species of Antarctic fish and assessment of their daily food consumption

   be about five times their body weight. File:  20-Pakhomov-and-Tseitlin.pdf ... food items for Chionodraco hamatus and Cryodraco antarcticus were first-year matured C. wilsoni (SL=17 ... significantly and the population was of one age class. However here we came across an increase in the index of ... production of no less than 20 to 25 thousand km2, is required for a biomass of this size. If one assumes ... that food evacuation from fish stomachs corresponds to an exponential function (Tyler, 1970 and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 321–333 : Auteur(s): Pakhomov, Y.A. and V.B. Tseitlin

8. Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic

   , were present during 5% of haul observations. A high inter-vessel variation was noted for interactions ... the fishing effort on the different grounds, although some ‘hotspots’ for interactions were noted ... hauling site. Observers reported that when vessels steamed away for between 20 and 30 n miles, killer ... vessels in 2001 and 11 of 15 vessels in 2002 were analysed (Table 1). For the purpose of this study an ... vicinity of vessels during hauling had an impact on catch rates. For these analyses the catch rates of ... H 302 14 4.6 46 15.2 0 0 I 319 14 4.4 78 24.5 20 6.3 J 712 30 4.2 119 16.7 14 2 K 346 12 3.5 18 ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Auteur(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins

9. CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island

   season, these parameters were examined for each 10-day period of the Japanese krill fishery in the ... from these data. The percentages of “Egui” as an indicator of greenness of krill were too variable ... among trawlers to be an objective indicator at present. File:  17-Endo-and-Ichii.pdf ... 50 40 l- 30 3 o l- ---J: U l- -< U 20 10 o E M JAN L E M FEB L E 10-DAY ... trawler for each 10-day period from January to March 1988. 333 20 10 o F ~~ w ~ <.::J a: f ... ~ 20 30 48 50 60 e- LATE FE::; ~I= 220'21 I ... :20 30 f-1 [DDLE ~IAF: 210 :::0 U~TE ~IAF: 212) 30 X= 46.0183 SD= 5.23026 ~IA><= 61 I-ml ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Auteur(s): Endo, Y. and T. Ichii

10. Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys

    before or during the monitoring period. This places an immediate constraint on the timing and ... geographical limits for the prey survey. Furthermore the diving ability of the selected predators defines the ... these are listed in Table 1 along with comments regarding the implied requirements for prey surveys ... ) identify a restricted period during which an effect due to prey availability is likely to be recognised ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Auteur(s): Everson, I.