Résultats de la recherche
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A review of the diet and at-sea distribution of penguins breeding within the CAMLR Convention Area (submitted to the 2008 Joint CCAMLR-IWC Workshop)
does cause birds distress, and in exceptional cases results in death of a study animal, but it is ... N15 gives an indication of the trophic level at which an animal feeds, while δC13 indi- cates primary ... be stored in 70% alcohol or frozen at –20°C, but feathers, toenails, eggshell and bone require no ... crops full of food to deliver to their chicks. At other times of the year this approach is difficult ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Auteur(s): Ratcliffe, N. and P. Trathan
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Seabird interactions with longlining operations for Dissostichus eleginoides at the South Sandwich Islands and South Georgia
saving of $A4.9 million and 30 300 albatrosses annually. The Japanese tuna fishery is in the process ... TwineTM #20. Eyeless hooks of size #26 MarutoTM (28 mm) were tied to the free ends of the secondary ... coils, each coil 75 m long with 30 to 38 hooks, giving a total length of main line of 22 500 m and a ... but were 10 mm in diameter. Pieces of the squid Illex argentinus were used for bait, with roughly 20 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 143–153 : Auteur(s): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno
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Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation
study, the SDWBA TS pattern and frequency response behaviours at standard survey frequencies and animal ... the distribution of animal orientations. Due to the high variability of TS to realistic changes in ... 1 15 1. 15 0. 29 3 0. 36 2 20 1. 2 0. 31 9 0. 39 4 30 1. 3 0. 37 4 0 ... ) and standard deviation (5, 10, 20 and 30 degrees) of the Gaussian distribution of orientation. It ... and animal lengths are explored via a sensitivity analysis of some important parameters: number of ... seawater and the distribution of animal orientations. Due to the high variability of TS to realistic ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Auteur(s): Calise, L. and G. Skaret
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Management and uncertainty: the example of South Georgia
in the 1980 year-class (paragraph 20 of the report). - 346 - Accepting that the decline in ... present M=O.ll, F=0.65. Annual recruitment, as numbers at 3 years old, has fallen from some 20 ... ages over 10 years and 19% over 20 years. The short lived fish were mostly small fish like anchovy ... , and the small numbers from the 1966 to 1969 year-classes observed in later years would not be ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Auteur(s): Gulland, J.A.
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Acoustic estimates of krill density at South Georgia, 1981 to 1998
from year to year over that time, ranging from ≈ 2 to ≈ 150 g m-2 (fresh mass). The 1982, 1991 and ... years; by convention the year given refers to the year in which the season ended) BAS has conducted ... years ,90' ,982 ,9i5 ,pB ,9+ ,9s6 $6' 40% ,989 ,99' ,992 ,9@ ,9qb ,9qb ,9q6 ,992 49% Year Figure 2 ... given year is less than p - o for all years, then the year in Acoustic estimates of krill density ... ), four years exhibited greater density in the east. The year deviating from this pattern, 1994, was ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Auteur(s): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson
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An assessment of toothfish in Subarea 48.3 using CASAL
spawning take place, lasted from 1 May to 31 August. The remainder of the year (1 September to 30 ... years refer to the fishing season that started in December prior to the year quoted. For example, year ... l and year y, the CV-at-length across years (cvl) of the proportions-at-length can be estimated by ... 1990 because the Russian fleet fishing in this year did not report haul-by-haul data to CCAMLR. Mark ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 65–95 : Auteur(s): Hillary, R.M., G.P. Kirkwood and D.J. Agnew
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Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl
" 50" 45" 40" 35" 30" Figure 4: Krill diskibution (g/ l 000 m3) in strata 0 to 100 m, 20 January to ... currents (relative to the 1 000 dbar), 20 January to 9 March 1988. 60" 55" 50" 45" 40" 35" 30" Figure 7 ... needed to obtain such material. Previous surveys carried out annually over nearly 20 years covered only ... December 1984 20 January-9 March 1988 Vessel RV Argus RV Evrika RV Evrika No. of Stations 177 ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Auteur(s): Sushin, V.A. and K.E. Shulgovsky
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Fatty acid and stable isotope analyses to infer diet of Antarctic toothfish caught in the southern Ross Sea
) and 120–135 cm (D). Values are mean ± SD. 70 60 50 40 30 20 10 0 % c om po si tio n ... OCT Octopodidae Octopus 10 0 20 0 30 SZT Pogonophryne scotti Plunderfish 25 0 0 3 28 PRA Pasiphaea ... . 0 ± 0. 7 C 18 :1 n9 c 20 .2 19 .5 ± 6 .4 21 .7 ± 0 .3 14 .1 30 .1 ± 2 .8 ... Science, Vol. 20 (2013): 21–36 21 FATTY ACID AND STABLE ISOTOPE ANALYSES TO INFER DIET OF ANTARCTIC ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 21–36 : Auteur(s): Jo, H.-S., I. Yeon, C. Lim, S.M. Hanchet, D.-W. Lee and C.-K. Kang
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Status of the coastal stocks of Dissostichus spp. in East Antarctica (Divisions 58.4.1 and 58.4.2)
operating off the coast of East Antarctica (30°E–150°E; FAO/CCAMLR Divisions 58.4.1 and 58.4.2) since 2003 ... (only five where time at liberty was a year or more). These recaptures were inconsistent with ... with the Ross Sea, where an analytical assessment has been possible for several years, and through ... 58.4.2. Fishing years extend from 1 December of the previous year to 30 November of the named year ... years was virtually in the same place each year (Appendix 2, Figures 2.1(g, h and i)). Fish could ... . have been operating off the coast of East Antarctica (30°E–150°E; FAO/CCAMLR Divisions 58.4.1 and ... , very few tags have been recaptured (only five where time at liberty was a year or more). These ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 71–100 : Auteur(s): Agnew, D.J., C. Edwards, R. Hillary, R. Mitchell and L.J. López Abellán
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Estimating optimal observer coverage in the Antarctic krill fishery
on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... vessels sampled each season, 20% of total season hauls sampled for krill and an equivalent or higher ... . The South Georgia data suggest that such strategies should be pursued for at least four years before ... krill fishery • a target coverage rate of >50% of vessels each year; • a target of >20% of hauls set ... (% ) T ot al h au ls w it h kr ill sa m pl in g (% ) A ca m ar 20 02 30 7 ... 05 46 3 22 4 13 7 61 56 30 41 12 Fe ol en t 20 05 43 1 43 6 32 6 ... 75 78 76 24 18 A tl an ti c N av ig at or 20 05 30 3 54 40 74 ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Auteur(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards