Résultats de la recherche
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Report of acoustic survey of Antarctic krill using FV FUKUEI-MARU
): K. Abe, Y. Takao and T. Ichii (Japan) Title: Report of acoustic survey of Antarctic krill using FV ...
Meeting Document : SG-ASAM-14/03 Rev. 1 : Auteur(s): K. Abe, Y. Takao and T. Ichii (Japan)
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Temporal variation in Antarctic sea-ice: analysis of a long-term fast-ice record from the South Orkney Islands
indicate that there has been a long term decline in the duration of sea-ice at the South Orkney Islands in ... . Analyses of satellite data have shown that fast-ice duration at Signy Island reflects the larger-scale ice ... the result of a reduction in the duration of fast-ice during the 19405 and 1950s. There was a ... Abstract: Detection of climate-induced change in marine ecosystems requires a knowledge of the ...
Meeting Document : WG-EMM-95/80 : Auteur(s): Symon, C., Murphy, E.J., Priddle, J., Clarke, A.
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Short note: time series of Drake Passage Oscillation Index (DPOI) from 1952 to 1988
1950s until 1988 at the Web sites of the Carbon Dioxide Information Analysis Centre for Rio Gallegos and ... of DPOI from 1952 to 1988 at this stage. Time series since 1988 will be soon calculated after ... hypothesized environmental factors; strength of westerly winds (westerlies) determined from sea-level pressure ... series of DPOI using historical data. We searched the historical data and found the time series since the ...
Meeting Document : WG-EMM-02/44 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)
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The effects of CEMP monitoring procedures on Adelie penguin colonies
attachment on the performance of Adelie penguins were investigated over three seasons at Bechervaise Island ... Abstract: The effects of flipper bands, implanted tags/gastric lavage and external instrument ... , Mac. Robertson Land, Antarctica. The return rates of birds carrying bands and/or implanted electronic ... transponders were compared to investigate the contribution of bands to bird mortality and to determine rates of ...
Meeting Document : WG-CEMP-93/19 : Auteur(s): J. Clarke, K. Kerry (Australia)
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Foraging energetics of Antarctic fur seals in relation to changes in prey availability
account for the observed between-year difference in at-sea FMR of C. ursinus while foraging-trip duration ... . Krill, the nearly exclusive prey of breeding females, were very scarce in 1984 at South Georgia. Fur ... the 1985 values. Female condition at parturition and average foraging-trip duration (i.e., offspring ... normal years only 5% of their time at sea is spent resting. This contrasts with northern fur seals ...
Meeting Document : SC-CAMLR-VIII/BG/13 : Auteur(s): Delegation of United Kingdom
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The use of CCAMLR Statistical Subareas 88.1 and 88.2 and Division 58.4.1 by Macquarie Island giant petrels
overall time at sea. We consider it possible that this trip may have been indicative of trips undertaken ... giant petrels spent 37% of their overall time at sea in statistical sub-area 58.4.1, and 14% in sub-area ... enter CCAMLR waters, one bird undertook a longer trip into division 58.4.1, where it spent 6% of its ... adult northern giant petrels (Macronectes halli), and two fledgling chicks of each species during the ...
Meeting Document : WG-FSA-06/49 : Auteur(s): R. Trebilco, R. Gales, B. Baker and A. Terauds (Australia)
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Variation in echosounder calibration with temperature and some possible implications for acoustic surveys of krill biomass
2.0 °C) than in European waters (7.3 °C), and a similar trend was detected at 38 kHz. If European ... Abstract: Accurate estimation of krill biomass by acoustic techniques is dependant upon a number ... of factors including, fundamentally, accurate echo-sounder calibration. The Simrad EK500 scientific ... echo-sounder used aboard RRS James Clark Ross is regularly calibrated at South Georgia before and after ...
Meeting Document : WG-EMM-97/52 : Auteur(s): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.
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Do Adélie penguin fledgling weights provide an index of prey availability?
to two assumed proxies of prey availability: breeding success and foraging trip duration. Concordance ... Abstract: We examine fledgling weights measured over 11 years at Béchervaise Island in relation ... between the two proxies was apparent when considering guard stage foraging trip durations but this was not ... as strong for the crèche foraging trips later in the season. Fledgling weights which are measured at ...
Meeting Document : WG-EMM-05/21 : Auteur(s): L. Emmerson, C. Southwell and J. Clarke (Australia)
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RAPID WARMING OF THE OCEAN AROUND SOUTH GEORGIA,SOUTHERN OCEAN, DURING THE 20TH CENTURY: FORCINGS, CHARACTERISTICS AND IMPLICATIONS FOR LOWER TROPHIC LEVELS
20th century but there are few locations with data before the 1950s. In addition, assessments of change ... Abstract: The Southern Ocean is known to have warmed considerably during the second half of the ... in this region are hampered by the strong seasonal bias in sampling, with the vast majority of data ... collected during the austral summer. However, oceanographic measurements near South Georgia span most of the ...
Meeting Document : WG-EMM-08/P03 : Auteur(s): M.J. Whitehouse, M.P. Meredith, P. Rothery, A. Atkinson, P. Ward and R.E. Korb
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Annual report of global toothfish trade data
. Application of the Max Partner Pair (MPP) estimation methodology identified the USA again as the largest ... sources for the trade of toothfish products for the 2017 calendar year. The analysis has identified that ... the forms with mean unit values of 22.30 US$/kg for imports and 18.85 US$/kg for exports. The data ... identified the largest importer was the United States of America (USA), accounting for 54.01% of the global ...
Meeting Document : CCAMLR-XXXVII/BG/08 Rev. 1 : Auteur(s): CCAMLR Secretariat