Résultats de la recherche

1. Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 kHz and 120 kHz

   differences in the mean back-scattering strength of swarms simultaneously insonified at these two frequencies ... in average target strength at these two frequencies. The results are in good agreement with recent ... effect of possible differences in the two integrator systems. One integration was done between 5 and ... ~ Z 30 « o "" ~ ~ 20 Z 10 .' . -I, - A9880 /' 1\ --- A9885 1\ •••• A9891 ... . Research ship Africana. Spec. Rep. Sea Fish. Res. Inst. S, Afr. 3: 80. BIOMASS. 1986. BIOMASS Report 40 ... WG-KRILL-90/28 MEASUREMENTS OF DIFFERENCES IN THE ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 75–86 : Auteur(s): Hampton, I.

2. A rationale for conservation areas within Antarctic waters

   available, the following six potential conservation areas are proposed: 70°W- 15°W 15°W- 40°E 40°E- 90°E 90 ... :  The application of potential conservation measures listed in Article IX 2 of the Convention requires ... marine living resources’ (Article IX 2 (b)). In order to select meaningful boundaries for such areas ... - DEGREES EAST DEGREES WEST I 20 40 60 eo 100 120 140 160 180 160 140 120 100 80 60 11 I I I I I I I I I ... management by open and closed areas (Article IX 2 (g). So far only one area has been closed to fishing ... potentielles suivantes sont proposees: - 514 - 70°0 - 15°0 15°0 - 40 0 E 40 0 E - 90 0 E 90 0 E - l50 0 ... °0 - 40 0 E 40 0 E - 90 0 E 90 0 E - l50 0 E 150 0 E - 160°0 160°0 - 70°0 Se presentan ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Auteur(s): Chittleborough, R.G.

3. Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system

   / Description:  An exchange system was established among Members of CCAMLR to compare age determinations for the ... agreement in age determination was highest for scales of juvenile N. rossii and for otoliths of juvenile C ... than one year: 18.0% 72.1% Agreement was mostly confined to the first three age classes (0 to 2 ... ) full agreement; and (ii) full agreement or deviations of not more than one year. The 'birthday' of ... less than 50%. If one allows for a deviation of one year, agreement among most readers was more than ... deviation of not more than one year among all readers: 37 (74.0%) 39 (78.0%) 50 (100%) The ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Auteur(s): Kock, K.-H.

4. The influence of bait quality on the sink rate of bait used in the Japanese longline tuna fishing industry: an experimental approach

   . The addition of a 20 g lead sinker to a conventional 20 g tuna hook reduced the sink time of bait ... refer to thawed bait. lwashi 80 S $60 ! - C . r40 i7, 20 0 0 - - : - : - I ... the effect of added weight (sinkers) on the sink rates of bait. Lead sinkers weighing 10 g, 20 g, 30 ... , 80% of small baits and 20% of large baits floated when thawed (Figure 1). As mentioned above, these ... . Fish with inflated swim bladders floated, however, even when thawed. The addition of a 20 g lead ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 123–129 : Auteur(s): Brothers, N., A. Foster and G. Robertson

5. Protecting young fish and spawning aggregations of Champsocephalus gunnari in Subarea 48.3 (South Georgia): a review

   fish (27-40 cm). One, however, was composed almost entirely of 1 and 2 year olds (about 12-30 cm). In ... of each year and end on 30 November of the fc%owing year. References SC-CAMLR, 1984, para raphs ... 90 mm, to protect first spawners, or 100 mm, to give an age at first capture of 4 years.' * The ... and Minimum Size Limits One of the most commonly used approaches to increasing the age at first ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 75–86 : Auteur(s): Parkes, G.B

6. Food consumption by predators in a CCAMLR integrated study region

   belonging to one of two basic categories: ashore (Le., breeding and moult period) and at-sea (rest of year ... activity cycle which can be one, two or three years long within which there may be two breeding attempts ... breeding cycle in one year, wandering, grey-headed and light-mantled sooty albatrosses breed biennially ... according to the data input. The dietary composition is also assumed to vary over a one-year period ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Auteur(s): Croxall, J.P., C. Ricketts and A.G. Wood

7. Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region

   takes one year or more, whereas in others gonad maturation was completed within one season. Length at ... sexual maturity and length at first spawning in  Champsocephalus gunnari  was one year later on the ... species, such as  Notothenia rossii  and Pseudochaenichtyhys georgianus, spawn at least one to two months ... from 1977/78 to 1989/90, and was in its heyday from 1977/78 to 1981/82. Except for Elephant Island, the ... that in some species final maturation of the gonads takes one year or more, whereas in others gonad ... ~psoceplzaltis gtinnari was one year later on the southerly grounds than at South Georgia. The distribution of ... Pseudochaetzichtlzys georgiantis, spawn at least one to two months later than at South Georgia. Channichthyids (except ... Islands due to one large haul of more than 800 kg/30 min. The number of species slightly increased from ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 1–41 : Auteur(s): Kock, K.-H., C.D. Jones and S. Wilhelms

8. Preliminary study on nesting Adélie penguins disturbance by unmanned aerial vehicles

   on each type of behaviour and number of different types of behaviour displayed by one bird during the ... disturbance by UAVs   Resting Comfort Vigilance/anxiety Aggression 100 90 80 70 60 50 40 30 20 ... 40 km, max. flight time 30 minutes, flight speed 70–80 km/h, fuel – Li-Pol battery (electric engine ... breeding group, with the cameraman sitting about 2 m further away. Each recording lasted 18 to 20 minutes ... the piston engine UAV was further away, and the noise level decreased, only 20% of birds exhibited ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 1–16 : Auteur(s): Korczak-Abshire, M., A. Kidawa, A. Zmarz, R. Storvold, S.R. Karlsen, M. Rodzewicz, K. Chwedorzewska and A. Znój

9. Analysis of haul data from the South Georgia krill fishery

   existed between years, with 1995 being a better season than either 1994 or 1996. Aspects of mesoscale ... at South Georgia occurs during the austral winter and spans the end of one CCAMLR reporting year ... operating in different years. Most vessels from Poland and Ukraine operated for just a single year, while ... (nominally for June and July at 54O00'S; 35"30fW), a two-sample T-test based on 10 daylight hours (hours ... starting in April (1 year), May (5 years) or June (1 year), and ending in August (1 year), September (2 ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 9–30 : Auteur(s): Trathan, P.N., I. Everson, E.J. Murphy and G.B. Parkes

10. Comparison of age readings from scales and otoliths of the Patagonian toothfish (Dissostichus eleginoides) from South Georgia

    24 years. This is very close to the maximum age of 22.8 years calculated from Taylor's formulae ... estimates between the two methods were not significant. Otoliths frequently appeared totally opaque, making ... Paper Title:  Comparison of age readings from scales and otoliths of the Patagonian toothfish ... (Dissostichus eleginoides) from South Georgia Abstract / Description:  Scale and otolith age readings were ... m 2 z z : 80 20 0 -Uo 0 0 0 0 0 0 0 m w m 2 z z z Age l 7 o J s ! : > ! ! ! 0 0 ... represents one year of life. Counting such annuli is a valid technique for determining the age of Antarctic ... 18. Cassia 0 8 8 8 8 8 8 8 m w m 2 z ? & 80 T Age 5 " @ ! \ ! , L L 20 t 0 0 0 0 ... soaked for one week in a solution of 20% alcohol (96"), 5% glycerin, a few drops of domestic detergent ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 191–203 : Auteur(s): Cassia, M.C

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