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1. Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass

   S v transducer gains at South Georgia (sea temperature at depth of transducer = 2.3 o C) were on ... average 1.4 dB less than in European waters (16.6 o C), and a similar trend was detected at 38 kHz. If ... implications for acoustic surveys of krill biomass Abstract / Description:  Accurate estimation of krill ... biomass by acoustic techniques is dependent on a number of factors of which one of the most fundamental is ... (sea temperature at depth of transducer = 2.3'C) were on average 1.4 dB less than in European waters ... undertaken in temperate European waters. The most recent of these took place in August 1995 at Uggdalseidet ... (16.6"C), and a similar trend was detected at 38 kHz. If European calibration parameters were to be ... of seasons in both Antarctic and European waters, which further support the view that echosounder ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Автор(ы): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe

2. On the power to detect changes using the standard methods for monitoring parameters of predatory species

   of predatory species Abstract / Description:  The CCAMLR guidelines (CCAMLR, 1989) for analyzing the ... statistical power to detect changes are applied using variance estimates from studies at the South Shetland ... Islands of lengths of first incubation shifts by penguins(Standard Method A2.1), duration of penguin ... trip duration (C2.0). The other Standard Methods are not evaluated because the power analysis in the ... following results were obtained. The average of the mean trip durations of 19 fur seal females at Seal ... applied using variance estimates from studies at the South Shetland Islands of lengths of first ... for Adelie and chinstrap penguins at Signy Island. 3.2 Length of First Incubation Shift (A2.1 ... penguins for five years and of male and female chinstrap penguins for four years at King George Island ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Автор(ы): Boveng, P. and J.L. Bengtson

3. 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 ... the result of a reduction in the duration of fast-ice during the 19405 and 1950s. There was a ... . Analyses of satellite data have shown that fast-ice duration at Signy Island reflects the larger-scale ice ... Abstract:  Detection of climate-induced change in marine ecosystems requires a knowledge of the ...

   Meeting Document : WG-EMM-95/80 : Автор(ы): Symon, C., Murphy, E.J., Priddle, J., Clarke, A.

4. 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 : Автор(ы): M. Naganobu and K. Kutsuwada (Japan)

5. A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem

   Paper Title:  A first step towards modelling the krill–predator dynamics of the Antarctic ... ecosystem Abstract / Description:  The history of human harvests of seals, whales, fish and krill in the ... hypothesis of a krill surplus in the mid-20th century is described, and the information on population and ... objective of the study is to determine whether predator–prey interactions alone can broadly explain observed ... taken from the end of the 18th century, followed by whales at the start of the 20th century. More ... . After this exploitation of the Antarctic fur seals, and commencing at the beginning of the 20th cen ... microcephalus) were taken in substantial numbers from the 1950s, and after the depletion of the other major ... II, the Antarctic blue whale popula- tion was already at about only a quarter of its pris- tine level ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Автор(ы): Mori, M. and D.S. Butterworth

6. 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 : Автор(ы): J. Clarke, K. Kerry (Australia)

7. 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 : Автор(ы): Delegation of United Kingdom

8. Final report on the 2nd session of the 2nd special ATCM 17-28 July 1978

   (c) above, the Commission shall meet at the request of any Member of the Conunission to review the ... annually and as provided in Article VIII. It may meet at any other time at the request of one-third of ... appointment of the third arbicr.tor, that arbitrator shall be appointed, at the request of either Party, by ... arbitral tribunal shall interpret the award at the request of one of the Parties to the dispute or of any ...

   Document : Site Section: The Organisation

9. 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 : Автор(ы): R. Trebilco, R. Gales, B. Baker and A. Terauds (Australia)

10. 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 : Автор(ы): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.

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