Resultados de la búsqueda
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Preliminary assessment of the South Georgia toothfish stock, 2007
estimates year class strength which corresponds, in some years, with estimates made from the South Georgia ... ). Fits of all data (CPUE; catches at length for the early fishery; catches at age for the later fishery ... retardation than larger fish, and that on average it is 1 year or more. 3. A new model is developed which uses ... Abstract: 1. The catch-at-length based CASAL model for toothfish at South Georgia is updated with ...
Meeting Document : WG-FSA-07/29 : Autor(es): D.J. Agnew, R. Hillary and J. Pearce (United Kingdom)
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Updated models of the habitat use of Patagonian toothfish (Dissostichus eleginoides) on the Kerguelen Plateau around Heard Island and the McDonald Islands (Division 58.5.2)
stages, up to 2-3 years old, and the implications of sexual and phenotypic variability in growth and ... (Dissostichus eleginoides) in the CCAMLR area, with landings of >5000 t.yr-1 from the French EEZ (Division ... with depths suggesting spatial segregation of life stages. Spatial predictions showed that small ... larger fish inhabit deeper waters (>1500m) especially on the eastern part of the Plateau, where the ...
Meeting Document : WG-FSA-14/42 : Autor(es): C. Péron and D.C. Welsford (Australia)
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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 ... northern area for up to 2–3 years. They then move southwards back onto the shelf and slope where ... 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 ...
Meeting Document : WG-FSA-07/35 : Autor(es): 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 ... Abstract: The results of icefish ecology were summarized for the period of above 20 years of ... 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 ...
Meeting Document : WG-FSA-99/65 : Autor(es): 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 ... with 26% of the total number of items collected during the winter. The total weight of debris collected ... ) compared to previous years. The greatest proportion of debris (95 %) was miscellaneous debris. The ... over the last decade, indicates that debris is still being lost by vessels into the marine environment ...
Meeting Document : SC-CAMLR-XXIII/BG/13 : Autor(es): 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 : Autor(es): 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 : Autor(es): J.A. van Franeker (Netherlands) and P.J. Bell (Australia)
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Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2005/06
all of the previous eight years of diet sampling; however, foraging trip durations were shorter than ... which were 51-55mm in length. This is a continuation of a four year trend with increasing proportions of ... previous season and is the third lowest population size in the 10 years of census data. The chinstrap ... penguin breeding population has been declining for the Past eight years and is at its lowest size in the ...
Meeting Document : WG-EMM-06/P1 : Autor(es): 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 ... heavy fledglings or poor breeding success with light fledglings while others had a lack of concordance ... between breeding success and fledgling weight. These discordant years also had an inconsistency between ...
Meeting Document : WG-EMM-12/22 : Autor(es): 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 ... heavy fledglings or poor breeding success with light fledglings while others had a lack of concordance ... between breeding success and fledgling weight. These discordant years also had an inconsistency between ...
Meeting Document : WG-EMM-12/48 : Autor(es): L. Emmerson and C. Southwell (Australia)