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1. Monitoring a marine ecosystem using responses of upper trophic level predators

   level predators that specialise in foraging upon krill (Eupuasia superba Dana). These variables included ... index (CSI). 2. Sensitivity analyses showed that missing values had a large effect upon the accuracy of ... . Individual variables had widely varying influence upon the CSI but, in general, those with longer time series ... had the greatest influence. 3. Principal components analysis showed that variables representing ...

   Meeting Document : WG-EMM-01/25 : Author(s): I.L. Boyd and A.W.A. Murray (United Kingdom)

2. Risk maps for Antarctic krill under projected Southern Ocean acidification

   development even if the embryos are transferred to seawater with current levels of CO 2. Krill embryos appear ... -dimensional circumpolar projection of future p CO 2, predict that by 2100 the Weddell Sea and the waters to ... south of the Polar Front is predicted to be unsuitable for hatching by the year 2300, which would lead ... to collapse of the krill population. This is the first report that explores the circumpolar impacts ...

   Meeting Document : WG-EMM-14/P06 : Author(s): S. Kawaguchi, A. Ishida, R. King, B. Raymond, N. Waller, A. Constable, S. Nicol, M. Wakit and A. Ishimatsu

3. Density and biomass of Antarctic krill around South Shetland Islands using by 2-dB difference method

   peripheries (33.8), with the length of the aggregations exceeding their height. It was evident that most krill ... backscattering strength (Sv) frequencies (38 and 120 kHz), a clear acoustic distinction could be made between ... of the South Shetland Islands (64.5) was higher than that in the south (35.9) and the Elephant Island ...

   Meeting Document : SG-ASAM-17/04 : Author(s): S.-G. Choi, K. Lee and D. An

4. Fishery Report: Dissostichus eleginoides Crozet Island inside the French EEZ (Subarea 58.6)

   . 1 Although the fishing season defined by France in its EEZ extends from 1 September to 31 August ... 685 1 776 2001/02 1 158 720 1 878 2002/03 531 302 833 2003/04 537 380 917 2004/05 559 12 571 2005 ... 1999/00 455 996 6 2.2 0.26 1127 2000/01 611 1052 6 1.7 0.23 1044 2001/02 1044 1292 7 1.2 0.16 975 ... 73 37 0 0 86 48 41 32 4 611 2001/02 19 32 99 170 135 150 144 87 0 87 58 63 1044 2002/03 118 116 42 ...

   Document : Site Section: Publications

5. Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica

   tonnes being caught during the 2005/06 fishing season (CCAMLR, 2008). They are managed by CCAMLR ... was graded using a five-point scale: fresh, slightly digested, advanced digestion, digested and mixed ... in rows of four before being embedded in clear epoxy resin (Araldite K142) and left to cure at 50 ... 2005 and February 2006, with the majority (83%) being col- lected in January 2006. Otoliths collected ... consistent with previous research. Regression equations for converting standard length to total length and ... . Gonad maturity stage data showed that most fish were either immature or resting (mature). Gonadosomatic ... the data. Length-at-maturity and age-at-maturity ogives indicated that 50% of the fish sampled were ... mature at about 340–360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Author(s): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott

6. Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?

   , either through active migration or being carried on ocean currents (processes that are collectively ... 2000 23.6 2.7 2001 4.1 36.7 2002 2.2 137.0 2003 16.6 84.6 2004 3.7 26.1 2005 5.9 89.4 2006 ... 1 8 1998 2 7 1999 4 1 2000 2 88 2001 9 14 2002 4 3 2003 2 7 2004 3 21 2005 1 5 2006 ... 1 7 3 0 1 0 1998 2 6 5 1 1 1 1999 6 23 16 1 0 3 2000 2001 11 6 10 3 1 2 2002 21 2 3 1 0 1 2003 ... recent years. This suggests that fishing at the trigger level would be equivalent to a long-term ... ;50% of the trigger level since 1991. Comparison with the 9.3% reference exploitation rate suggests ... that current management is precautionary at the regional scale. The subarea catch limits help prevent ... excessive concentration of catch at the subarea scale. Finer-scale management might be necessary to manage ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Author(s): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins

7. Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set

   the Pacific water is encountered, there are indications of vigorous mixing processes of Bransfield Straits ... is associated with abundant Krill populations. It is speculated that mixing of Weddell and Pacific waters near ... the Pacific water is encountered, there are indications of vigorous mixing processes of Bransfield Straits ... is associated with abundant Krill populations. It is speculated that mixing of Weddell and Pacific waters near ...

   Meeting Document : SC-CAMLR-VII/BG/19 : Author(s): United States of America

8. Decline of Antarctic fur seal (Arctocephalus gazella) population at SSSI No. 32, South Shetlands, Antarctica, during 1997/98: a discussion of possible causes

   Abstract:  Little is known of what happened after the exploitation period with the population of ... date logistic model that describes pup population increase from 1965/66 to 1997/98. During this last ... also lower than last year. We hipothesize that large scale fluctuations in physical oceanographic ... be changing krill abundance and distribution, in turn affecting local predator reproductive ...

   Meeting Document : WG-EMM-98/17 : Author(s): R. Hucke-Gaete, D. Torres, A. Aguayo and V. Vallejos (Chile)

9. Growth and shrinkage in Antarctic krill Euphausia superba is sex-dependent

   period is critical to their success. Laboratory evidence suggests that krill may shrink in body length ... during this time in response to the low availability of food. Nevertheless, verification that krill can ... and compared our results with those obtained from a combination of science and commercial sampling ... of the ovaries and is not necessarily an outcome of winter hardship. The sex-dependent changes that ...

   Meeting Document : WG-EMM-16/P04 : Author(s): G. Tarling, S. Hill, H. Peat, S. Fielding, C. Reiss and A. Atkinson

10. Adoption of conservation and management measures

    notification and data from observers are being submitted. 3.5.3.3 The basis for selecting species groups ... notification and data from observers are being submitted. 3.5.3.3 The basis for selecting species ...

    Page : Site Section: The Organisation

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