Résultats de la recherche
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A hypothetical life cycle for Antarctic toothfish Dissostichus mawsoni in Antarctic waters of CCAMLR Statistical Area 88
eastwards with the eastern Ross Sea gyre settling out along the continental slope and shelf to the east of ... and timing of spawning, and the probable early life history characteristics of toothfish, we ... larvae after an 18–24 month period suggested by the models agreed moderately well with the distribution ... northern area for up to 2–3 years. They then move southwards back onto the shelf and slope where ...
Meeting Document : WG-FSA-07/35 : Auteur(s): S.M. Hanchet, G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams (New Zealand)
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Distribution and some biological features of icefish (Champsocephalus gunnari) at different life cycle stages in the South Georgia subarea
near the bottom where it is fished with bottom gears. The annual cycle of fish is subdivided into 3 ... that the life mode changed from pelagic one occurring at early life stages, to near-bottom- pelagic one ... for the most time and is fished with midwater trawl. Its diurnal migrations pattern is similar to that ... north-east to coastal areas in the northern and north-eastern part and to the open shelf areas in the ...
Meeting Document : WG-FSA-99/65 : Auteur(s): Zh.A. Frolkina (Russia)
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Beach debris survey, Main Bay, Bird Island, South Georgia, 2002/03
Abstract: During the thirteenth year of standardised beach surveys of man-made debris at Bird ... recorded in 2001/02 and the lowest levels of beach debris during summer since the first year of recording ... in 1990/91. The distribution of debris between summer and winter was similar to the previous year ... with 26% of the total number of items collected during the winter. The total weight of debris collected ...
Meeting Document : SC-CAMLR-XXIII/BG/13 : Auteur(s): Delegation of the United Kingdom
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Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate
growth at Bird Island had declined to below 3% annually by 1988 compared with rapid growth (17%) in 1958 ... -1972. Exponential models fitted to the frequency distribution of age-classes greater than age 5 years ... Georgia, in 1988 was compared with the age distribution of a sample obtained in 1971-1973. The mean age in ... 1971-1973 was 7.41 (SE = 0.26) years and in 1988 it was 6.93 (SE = 0.20) years. After correction for ...
Meeting Document : WG-CEMP-91/21 : Auteur(s): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)
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Plastic ingestion by petrels breeding in Antarctica
chicks of Wilson’s Storm Petrels that had died before fledging. Few or no plastics were found in Snow ...
Meeting Document : CCAMLR-VIII/BG/09 : Auteur(s): J.A. van Franeker (Netherlands) and P.J. Bell (Australia)
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Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2005/06
which were 51-55mm in length. This is a continuation of a four year trend with increasing proportions of ... all of the previous eight years of diet sampling; however, foraging trip durations were shorter than ... the previous season and was slightly higher than the previous eight year mean. Gentoo penguin fledge ... weights increased slightly from the 2004-05 season and were close to the previous eight year mean. Both ...
Meeting Document : WG-EMM-06/P1 : Auteur(s): E.S.W. Leung, R.A. Orben and W.Z. Trivelpiece (USA)
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Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability
, foraging trip duration, meal mass and fledgling weights. Some years had either good breeding success with ... response parameters was much greater than was observed in the two years with concurrent krill abundance. If ... Abstract: We examined the within- and between- year fluctuations of four Adélie penguin ... heavy fledglings or poor breeding success with light fledglings while others had a lack of concordance ...
Meeting Document : WG-EMM-12/22 : Auteur(s): L. Emmerson and C. Southwell (Australia)
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Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability
, foraging trip duration, meal mass and fledgling weights. Some years had either good breeding success with ... response parameters was much greater than was observed in the two years with concurrent krill abundance. If ... Abstract: We examined the within- and between- year fluctuations of four Adélie penguin ... heavy fledglings or poor breeding success with light fledglings while others had a lack of concordance ...
Meeting Document : WG-EMM-12/48 : Auteur(s): L. Emmerson and C. Southwell (Australia)
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Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability
early- and late-season surveys were associated with logistic support voyages to South Georgia and were ... that is consistent with observations from previous years, krill density in the western box mid-season ... around South Georgia in the 2000/2001 season: in October 2000 (early-season); during late December ... / early January 2000/2001 (mid-season), and in March 2001 (late-season). The surveys were the first in a ...
Meeting Document : WG-EMM-01/15 : Auteur(s): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)
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Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)
particularly apparent during the late guard to early crèche stages of chick rearing, coinciding with the timing ... differences between the two seasons included A5: foraging trip duration, A6: breeding success and A8: meal ... period. Data on meal mass and foraging trip duration were combined to provide an index of provisioning ... to the diet in 2003 but was only a minor component in 2001. Differences between years were ...
Meeting Document : WG-EMM-03/44 : Auteur(s): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)