Résultats de la recherche

1. Antarctic fur seals in the South Shetland Islands: pup production and population trends

   Abstract:  Discovered in 1819, the South Shetland Islands soon became the focus of intensive ... were found at Cape Shirreff, Livingston Island in January 1960. In 1987, an archipelago-wide aerial and ... ground census identified breeding colonies and substantial increases in pup production. This paper ... 30 January –5 February 2002. Multiple counts of pups at each colony were conducted to establish ...

   Meeting Document : WG-EMM-02/51 : Auteur(s): M.E. Goebel (USA), V.I. Vallejos (Chile), W.Z. Trivelpiece, R.S. Holt (USA) and J. Acevedo (Chile)

2. New possibilities of krill-dependent indicator species monitoring – UAV survey in Subarea 48.1

   : Adélie, gentoo and chinstrap penguins. In total approx. 30 000 nests in twelve breeding colonies were ... Abstract:  Unmanned Aerial Vehicles specially adapted for operation in polar regions were used to ... , Chabrier Rock and Penguin Island (Subarea 48.1) in three austral summer seasons (2014/15, 2015/16, 2016/17 ... software. In selected colonies a comparison with the results of measurements taken at the same time from ...

   Meeting Document : WG-EMM-17/03 : Auteur(s): M. Korczak-Abshire, A. Zmarz, M. Rodzewicz, R. Storvold, M. Kycko, I. Karsznia, A. Kidawa and K.J. Chwedorzewska

3. Results of the tagging experiment for (D. eleginoides) in Subarea 48.4, 2007 update

   in catching and tagging the anticipated number of toothfish each year, the experiment and CM 41-03 ... Abstract:  1. During the 2006/07 fishing season one UK and one New Zealand vessel fished in ... distributions of abundance around the fishing area. There were two tag recaptures in 2007, both of D ... the mark-recapture experiment in Subarea 48.4 in 2007/08. Initial estimates of population size will be ...

   Meeting Document : WG-FSA-07/32 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)

4. SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION

   poor krill years occurred in 1969, 1978 and 1991. Spatial analysis of icefish diet indicates ... South Georgia and Shag Rocks shelves in January 2009. The results show that the diet of this normally ... low in Antarctic krill (7 % IRI) compared with similar data for the same month in 2004-2006. The ... occurrence of krill in the diet with earlier data sets (1967-1992) show that 2009 is not unique, as similarly ...

   Meeting Document : WG-EMM-09/27 : Auteur(s): M.A. Collins and C.E. Main (United Kingdom)

5. An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   status for the toothfish resource in the Prince Edward Islands region that were developed last year are ... the short-term by an increase in the mean length of longline-caught toothfish over the next five years ... a constant future catch suggest that the two scenarios will only be qualitatively distinguished in ... control rule based upon recent trends in both CPUE and this mean length is investigated. This MP is able ...

   Meeting Document : WG-FSA-SAM-06/12 : Auteur(s): A. Brandão and D.S. Butterworth (South Africa)

6. 2007 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   data from a pot fishery that operated in 2004 and 2005. Biological parameter values adopted for Subarea ... 48.3 are used. The resource is estimated to be at about 37% of its average pre-exploitation level in ... ) Title:  2007 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward ... become available for the years 2006 and 2007. The assessment allows for a second fleet to accommodate ...

   Meeting Document : WG-FSA-07/34 Rev. 1 : Auteur(s): A. Brandão and D.S. Butterworth (South Africa)

7. Natural mortality rates of the Antarctic krill Euphausia superba Dana in the Indian sector of the Southern Ocean

   Abstract:  Data on the size and age composition of Euphausia superba were collected in the ... E.superba in the Indian sector of the Southern Ocean were calculated according to Alverson-Carney’s (1975 ... superba Dana in the Indian sector of the Southern Ocean Approval:  Approved ... , during the maturation period, to 1.17 and 3.22 during the first and last years of life, respectively ...

   Meeting Document : WG-KRILL-93/44 : Auteur(s): E.A. Pakhomov (Ukraine)

8. Methodology for automated spatial sea ice summaries in the Southern Ocean

   performance in the Southern Ocean. Sea ice can limit access to fishing grounds, for both commercial fishing ... access are in use by CCAMLR. We develop a method to spatially and temporally summarise satellite-derived ... sea ice concentration data in the Southern Ocean, and relate it to data on commercial fishing vessel ... dynamics of sea ice in a target location for a specified period, and a temporal view is used to ...

   Meeting Document : WG-FSA-14/54 : Auteur(s): S.J. Parker, S.D. Hoyle, J.M. Fenaughty and A. Kohout (New Zealand)

9. Environmental response of upper trophic level predators reveals a system change in an Antarctic marine ecosystem

   increase in the frequency of years of low reproductive output. Changes in the population structure of krill ... Abstract:  In the Antarctic Peninsula region current, long-term changes in the physical ... Georgia. Indices of population size and reproductive performance showed declines in all species and an ... largest size class was sufficient to support predator demand in the 1980's but not in the 1990's ...

   Meeting Document : WG-EMM-01/21 : Auteur(s): K. Reid and J.P. Croxall (United Kingdom)

10. Variations in food composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia

    proportion of mysids in the diet remained fairly constant. krill is obviously the prefered diet. In years of ... ) around Shag Rocks and the mainland of South Georgia was investigated in January/February 1985, January ... superba), the hyperiid Themisto gaudichaudii, mysids and in 1985 also Thysanoessa species. The proportion ... of krill and Themisto in the diet items varied considerably between the three seasons, whereas the ...

    Meeting Document : WG-FSA-92/26 : Auteur(s): K.-H. Kock (Germany), I. Everson (United Kingdom), S. Wilhelms (Germany), S. Campbell (United Kingdom), J. Szlakowski (Poland), G. Parkes (United Kingdom), Z. Cielniaszek (Poland) and C. Goss (United Kingdom)

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