Résultats de la recherche

1. Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island

   Seal Island were conducted to identify and evaluate their foraging areas during early January 1990/91 ... nongravid krill, were dominant with occasional occurrences of juveniles (modal length 21 mm). In contrast ... . 2-3 km in horizontal distance) of higher densities (≥250g/m2). In the inshore foraging areas krill ... , in the inshore foraging areas middle-sized krill (modal length 43 mm), which consisted mainly of ...

   Meeting Document : WG-KRILL-92/27 : Auteur(s): T. Ichii, H. Ishii (Japan), J.L. Bengtson, P. Boveng, J.K. Jansen (USA) and M. Naganobu (Japan)

2. Physical forcing in the southwest Atlantic: ecosystem control

   periods appear to be prior to the breeding season during the summer and early autumn of the preceding year ... temperature anomalies at lag periods of approximately 3 to 4 years. Crosscorrelation analyses with temperature ... temperature fluctuations in the Pacific, with the Pacific leading South Georgia by approximately 3 years ... physical environment has been recorded since the early part of the last century. For example, ocean ...

   Meeting Document : WG-EMM-04/34 : Auteur(s): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)

3. Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data

   the effect of not updating an assessment every year, and also the evolution of stock assessments with ... assessments, when each extra year of withheld data represented a large contribution to the model. In later ... years, the change in estimated biomass arising from withholding data was much smaller, with values ... removing up to four years of the early tag data had little effect on the estimate of the initial biomass ...

   Meeting Document : WG-SAM-11/17 : Auteur(s): S. Mormede (New Zealand)

4. Development of the Southern Ocean Continuous Plankton Recorder survey

   schedule, travelling south on 110°E in early December and north on 150°E in mid-March each year, and will ... as early as July (midwinter). The large areal and temporal scale means that it is difficult to ... icebreaker Shirase in collaboration with the Japanese Antarctic programme. Shirase has a fixed route and time ... austral summers with 20, 31 and 26 tows, respectively. The 1999/2000 season included a unique, nearly ...

   Meeting Document : WS-BSO-07/P4 : Auteur(s): Hosie, G., M. Fukuchi and S. Kawaguchi

5. A three-frequency method to determine the abundance and the size of two euphausiid species (Euphausia superba and Euphausia crystallorophias)

   role in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance of ... aggregations with similar shape, therefore visual separation of their echograms is difficult. The possibility ... of the net and to the net avoidance (Wiebe, 1972; Everson and Bone, 1986). This last bias affects ... an echo coming from an isolated organism, with no interference from noise or other targets. It means ...

   Meeting Document : WG-EMM-01/63 : Auteur(s): M. Azzali, J. Kalinowksi, G. Lanciani and I. Leonori (Italy)

6. A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997–98 TO 2007–08

   2001), these year classes are not seen in large numbers in later years in the fishery. So at this stage ... catch was the fourth highest on record with a total of 2666 t against a combined catch limit of 3207 t ... -year experiment (SC-CAMLR-XXIV). One of the aims of the experiment was to simplify the administration ... of the fishery by having fewer catch limits. This appeared to be moderately successful, with only one ...

   Meeting Document : WG-FSA-08/22 : Auteur(s): M.L. Stevenson, S.M. Hanchet and A. Dunn (New Zealand)

7. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07

   Shelf in 1999 and 2001), these year classes are not seen in large numbers in later years in the fishery ... management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3-year ... the second highest on record with a total of 3431 t against a combined catch limit of 3579 t. The ... fishery by having fewer catch limits. This appeared to be moderately successful, with only one catch limit ...

   Meeting Document : WG-FSA-07/28 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)

8. Progress report on the scientific data compilation and analyses in support of the planning of a potential Marine Protected Area (MPA) east of the zero meridian in the Weddell Sea (Antarctica)

   of Domain 4 for submission to the Commission in 3 to 4 years. Work on this project commenced with an ... 6.39) as a useful way forward to achieve consensus and offered to work collaboratively with Norway, the ... EU and its Member States to progress on Norway’s proposed design to protect areas in the eastern part ... Abstract:  In recent years, CCAMLR Member States have undertaken substantial efforts to designate ...

   Meeting Document : SC-CAMLR-38/BG/14 : Auteur(s): G. Griffith, T. Hatterman, A. Høgestøl, Y. Kasajima, A. Lowther, S. Moreau, B. Njaastad, P. Koubbi, C. von Quillfeldt, T. Brey, K. Teschke and O.A. Bergstad

9. Beach debris survey – Main Bay, Bird Island, South Georgia, 2003/04

   Abstract:  During the fourteenth year of standardised beach surveys of man-made debris at Bird ... 1.82 kg since last year to 5.39 kg. The highest proportion of marine debris collected comprised ... packaging bands were recovered. Miscellaneous debris increased by 100% since last year (from 175 to 350 ... pieces), indicating that debris is still being lost by vessels into the marine environment. Therefore ...

   Meeting Document : SC-CAMLR-XXIV/BG/15 : Auteur(s): Delegation of the United Kingdom

10. Trends in bird and seal populations as indicators of a system shift in the Southern Ocean

    a time lag of 2–9 years with temperatures, the population size of most seabirds and seals monitored ... in mid 1980s, being particularly important in the in the sub-Antarctic sector. At the same time with ... . These changes, together with the indications of a simultaneous decrease in secondary production in sub ... over the past 50 years in the southern Indian Ocean, the increase starting in mid 1960s and stabilizing ...

    Meeting Document : WG-EMM-03/53 : Auteur(s): H. Weimerskirch, P. Inchausti, C. Guinet and C. Barbraud (France)

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