Resultados de la búsqueda
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Distribution, biological characteristics and biomass of mackerel icefish based on the results of the trawling survey carried out at RV Atlantida in February 2000
by Russia at R/V Atlantida in February 2000 in Subarea 48.3 are presented. During that period ... C.gunnari were feeding. In all parts of the Subarea, except the North-Western one, C. gunnari of 22-28 cm in ... length and 2-3 years old predominated. Fish biomass distributed near the bottom estimated with different ... coefficient. The objective evidences are submitted to prove that a certain part of C.gunnari stock may stay in ...
Meeting Document : WG-FSA-00/51 : Autor(es): Zh.A. Frolkina and P.S. Gasiukov (Russia)
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Variation in standing stock of the mackerel icefish Champsocephalus gunnari at South Georgia
commercial fishing. 2. The greatest effect has been observed in years when krill are known to have been ... Abstract: 1. Bottom trawl surveys on the South Georgia shelf indicate episodic declines in the ... that predation by fur seals is likely to play a major role in the observed changes in C. gunnari ... abundance. 5. Periodic shifts in food chain relationships, involving krill, C. gunnari and fur seals, are ...
Meeting Document : WG-FSA-99/63 : Autor(es): I. Everson, G. Parkes (United Kingdom), K.-H. Kock (Germany) and I. Boyd (United Kingdom)
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Validation of age determination in Notothenia coriiceps, by means of a tag-recapture experiment at potter cover, South Shetland Islands
Shetland Islands, in successive years from 1989 to 1992, 9 were recaptured at the same site after periods ... of 11-21 months. A comparison was carried out between the annuli found in scales removed before and ... after the period of liberty. In scales of those specimens recovered after 11-13 months, one extra ... annulus was laid down. The same analysis in one individual recovered after 21 months resulted in 2 extra ...
Meeting Document : WG-FSA-94/12 : Autor(es): E.R. Barrera-Oro and R.J. Casaux (Argentina)
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Growth of krill around the South Orkney Islands in 1989/90
the females. The increment for this period was the same for both sexes and had about 8–9 mm in length ... that krill don’t reach the age of 5 years. Author(s): Latogursky, V.I. Title: Growth of krill around ... the South Orkney Islands in 1989/90 Approval: Approved ...
Meeting Document : WG-EMM-95/05 : Autor(es): Latogursky, V.I.
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Candidate baseline data for ecosystem indicators in the Ross Sea region. Part B: Discussion of the data
by the Scientific Committee (SC-CAMLR-XXXVI/20). The Plan identifies research questions that aim to ... characterize the status of the marine ecosystem in the Ross Sea region. These baselines provide benchmarks from ... which to assess change and evaluate the performance of the MPA. Here, and in an accompanying working ... paper (SC-CAMLR-XXXVII/11), we suggest candidate baseline data for seven indicator species listed in the ...
Meeting Document : SC-CAMLR-XXXVII/BG/13 : Autor(es): Delegation of the USA
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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 : Autor(es): M.E. Goebel (USA), V.I. Vallejos (Chile), W.Z. Trivelpiece, R.S. Holt (USA) and J. Acevedo (Chile)
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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 : Autor(es): M. Korczak-Abshire, A. Zmarz, M. Rodzewicz, R. Storvold, M. Kycko, I. Karsznia, A. Kidawa and K.J. Chwedorzewska
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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 : Autor(es): J. Roberts and D.J. Agnew (United Kingdom)
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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 : Autor(es): M.A. Collins and C.E. Main (United Kingdom)
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An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
the short-term by an increase in the mean length of longline-caught toothfish over the next five years ... status for the toothfish resource in the Prince Edward Islands region that were developed last year are ... 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 : Autor(es): A. Brandão and D.S. Butterworth (South Africa)