Search results
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Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S and 53 o-57 ... o 30´W) for proportional recruit and density indices. Proportional recruitment indices were re ... -year-old krill (R 1 and R 2 respectively). Statistically significant fluctuations in krill density over ... to the representativeness of the study area (60°-62o30´S and 53o-57o30´W) for proportional recruit ... . The R , recruitment value is the proportion of l-year-old animals in the population in that year. 111 a few cases ... with hi fest mean density (1977/78) with the remainder, e inning with the year with lowest density, Tb ... to the representativeness of the study area (60°-62030'S and 53"-57'30'W) for proportional recruit and density indices ... analysis. Results are compared for one- and two-year-old ]
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Author(s): Siegel, V., W. de la Mare and V. Loeb
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Intra-annual variability in the density of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ estimates of krill density
) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ... all three years, was detected. Krill densities in winter were predominantly low (mean = 18.7 ... g m –2, SD = 24.3), but had risen substantially by summer in each year (mean = 89.5 g m –2, SD = 64.2 ... to explore whether high-frequency temporal variation (i.e. within-year) could have led to the perceived ... , CCAMLR Saunders et al. 30 summer) in the light of repeated observations of within-year changes ... 30 0 19 6 30 –1 82 × 13 00 20 3 20 –1 89 × 2 19 / 02 –2 8/ 04 / 03 30 0 19 8 32 –1 84 ... 7 21 –2 13 × 5 14 / 01 –2 4/ 03 / 04 30 0 19 8 32 –1 84 × 13 00 22 6 20 –2 12 × 6 26 ... on 20/11/04 44.2 (157) –42.76 JR116 06/01–10/01/05 06/01–10/01/05 57.1 (144) –44.92 JR121 30/03–02/04 ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 27–41 : Author(s): Saunders, R.A., A.S. Brierley, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein and D.G. Bone
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Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3
in years of poor krill availability. Thus natural ortality of C. gunnari may, in some years, increase ... with increased consumption of C. gunnari by Antarctic fur seals in years of poor krill availability. Thus natural ... ortality of C. gunnari may, in some years, increase by a large factor (assumed here ... , to 4 million animals. Fur seal consumption of C. gunnari in both good and poor krill years is well documented ... in years of high fur seal predation, depending on the size of animals in the fur seal and C. gtinnari ... spawning stock biomass dropped below 20% of the median B, level during the 10-year projection period ... rates. These may be associated with increased consumption of C. gunnari by Antarctic fur seals in years ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Author(s): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes
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Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South Georgia shelf
for commercial concentrations of C. gunnari in years of high abundance of the species (1982/83, 1983/84 and 1986 ... for clarification of survey techniques used in stock assessment. For a number of years scientists of AtlantNIRO have ... from research vessels which had been fishing for commercial concentrations of C. gunnari in years ... . For a number of years scientists of AtlantNIRO have been conducting trawl surveys for C. gunnari during ... from research vessels which had been fishing for commercial concentrations of C. gunnari in years ... used in stock assessment. For a number of years scientists of AtlantNIRO have been conducting trawl ... HCnOJib30BaHbl ,l{aHHbie Hayl.IHO-HCCJie,l(OBaTeJibCKHX cy ,l(OB, o6JiaBJIHBaBIIIHX npOMbiCJIOBbie CKOnJieHH51 ... H MHrpHpyeT B TOJIIIlY BO,l(bl, ,l(OCTHf'a51 10pH30HTOB 50-60 M. liHK nHTaHH51 npHXO,l(HJIC51 Ha HOl.IHbie ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 3–14 : Author(s): Frolkina, J.A. and V.I. Shlibanov
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Supplementary data on exploited stocks in Division 58.5.1 (Kerguelen)
, BbInOJIHeHHbIX Ha yq aCTKe 58.5.1 (OCTpOB KepreJIeH) C 1986/87 no 1988/89 rr., npe,llOCTaBl-IJIaCb B03MO ... Notothenia squamifrons 6bIJI OqeHb HH3KHM.CO BpeMeHH YCTaHOBJIeHH5.I ;;\KOHOMHqeCKOH 30HbI Ha6JIIO ... . An assessment of the biomass of individuals aged more than three years present over the Kerguelen Shelf ... of the stock in five years. The implementation of conservation measures does not, however, always allow ... Paper Title: Supplementary data on exploited stocks in Division 58.5.1 (Kerguelen) Abstract ... / Description: The results of fishing cruises carried out from 1986/87 to 1988/89 in Division 58.5.1 (Kerguelen ... average annual growth of 36% has been noted in the abundance of the juvenile section of the stock of ... research cruises. The abundant 1985 cohort of Champsocephalus gunnari appeared in the shelf stock and it ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 147–161 : Author(s): Duhamel, G.
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Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector
was just 3% coverage (Teixidó et al., 2004) and an average diameter of approximately 20–30 cm (Gutt ... habitats into zoogeographical provinces date back to the early 20th century (Koehler, 1912; Hedgpeth ... m respectively. The target time for a gear deployment was 30 min on the bottom. Geographic coordinates were ... was 30 min on the bottom. Time on the bottom was measured by means of a time-depth recorder mounted ... the Weddell water masses that meet and mix in this region. Evident at smaller spatial scales are the ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Author(s): Lockhart, S.J. and C.D. Jones
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Methods of age determination for mackerel icefish (Champsocephalus gunnari Lönnberg 1905) from the South Georgia Island shelf
of fish longer than 30 cm having an enlarged otolith centre. An age/length key for the third quarter ... of the year was also calculated. File: 04-Frolkina.pdf ... of otolith could be used to adjust age assessments of fish longer than 30 cm having an enlarged otolith ... centre. An age/length key for the third quarter of the year was also calculated. ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 37–49 : Author(s): Frolkina, Zh.A.
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Diurnal variations in biological characteristics of krill, Euphausia superba Dana, to the west of the South Orkney Islands, 24 March to 18 June 1990 - based on data reported by a biologist-observer
tows per station, over one day). An increase in the total average size of animals caught in periods ... ). An increase in the total average size of animals caught in periods of light or darkness was noted at several ... one day). An increase in the total average size of animals caught in periods of light or darkness ... , pa60TaBmero Ha npOMbICJIOBOM yt-IaCTKe OKOJIO lO:>KHbIX 0pKHeHCKHX O-BOB. Ha6JIIO,lleHH.5I BbInOJIH.5IJIHCb ... .51 MHrpaU;H.5I He Ha6JIIO,llaJIaCb (B t.IaCTHOCTH B KOHu;e ce30Ha) ,llHeBHbIe H3MeHeHH.5I ... la tall a promedio de los animales capturados durante el ilia 0 en perfodos de oscuridad. Se obtuvo ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 201–222 : Author(s): Vagin, A.V., R.R. Makarov and L.L. Menshenina
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Long-term trends in the foraging patterns of female Antarctic fur seals at South Georgia
trips, with 1979 being the year with the fewest trips made during the entire 20 year period. (In press ... with the fewest trips made during the entire 20 year period. (In press in: Sahrhage, D. (ed). Antarctic Ocean ... Bird Island, South Georgia, was analyzed to estimate: 1) birth year of individuals, and 2) the number ... , was analyzed to estimate: 1) birth year of individuals, and 2) the number of feeding trips made ... of feeding trips, with 1979 being the year with the fewest trips made during the entire 20 year period ... OKa3anCH rOAoM, KorAa 6bInO cAenaHo HaWMeHbwee KOnWqeCTBO BhlxoAoB 3a BeCb 20-neTHwfI nepwoA ... from Bird Island, South Georgia, was analyzed to estimate: 1) birth year of individuals ... voyages ont ete les moins nombreux sur la periode de 20 ans. Sous presse dans Sahrhage, D. (ed ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 441-443 : Author(s): Bengtson, J.L.
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Revised estimates of the area of the South Georgia and Shag Rocks shelf (CCAMLR Subarea 48.3)
–1 00 10 0– 15 0 15 0– 20 0 20 0– 25 0 25 0– 30 0 30 0– 35 0 35 0– 40 0 40 0– 45 0 45 ... 54 35 2 30 273 385 1 125 467 35 30 28 31 2 406 17 54.5 39 0 0 0 15 57 47 26 20 12 8 185 18 54.5 38 ... 0 0 19 634 690 282 130 92 63 76 1 986 19 54.5 37 28 30 270 847 1 090 448 114 38 30 23 2 918 20 54.5 36 ... 2 406 2 382 24 1.01 17 185 2 33 –48 0.79 18 1 986 1 531 455 1.30 19 2 918 2 563 355 1.14 20 2 728 3 088 ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 167–175 : Author(s): Belchier, M. and P. Fretwell