Resultados de la búsqueda
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands 1999/2000
previously entangled but had lost its collar by the time of observation. All of the animals involved were ... the number of fur seals arriving at Signy Island in 1999/2000 was the highest observed since ... entanglement surveys began in 1996/97. Data are compared with results from a parallel study undertaken at Bird ... decreased (by 42%) since 1998/99. Over the past four years, fluctuations in the incidence of entanglement ...
Meeting Document : SC-CAMLR-XIX/BG/03 : Autor(es): Delegation of the United Kingdom
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The feeding peculiarities of the Antarctic seals in the region of the archipelago of Argentina Islands
that krill (Euphausia superba) is the main type of food for the major species of seals in region. Krill ... growth in comparison with literary data аccording to Weddell seal (L. weddelli) newborns monitoring. It ... testifies to enough qualitative and sufficient forage reserve for pregnant Weddell seal females in ... archipelago water area in which diet krill prevails also (about 70 %). Considering that from 5 seals species ...
Meeting Document : WG-EMM-12/P01 : Autor(es): I. Dykyy
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A descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in the Ross Sea up to 2005/06
. However, recapture rates have tended to be higher in the northern and eastern SSRUs 88.1C and 88.2E. About ... Abstract: A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... . Tagging rates by area over the past three years have been in the same proportion as the catch by area ... Secretariat as soon as possible so that the analysis can be updated in time for the 2006 WG-FSA meeting ...
Meeting Document : WG-FSA-SAM-06/09 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)
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Using acoustic echo counting to estimate grenadier abundance in the Ross Sea (SSRU88.1I)
Abstract: Grenadiers (Macrourus spp.) are the main bycatch species in the exploratory longline ... fishery for toothfish in the Ross Sea. Previous studies concluded that acoustics methods could be used to ... targets on the eastern side of the Iselin Bank. The acoustic target strength distribution of single ... targets was similar to that predicted based on the expected size range of grenadiers. Variability in ...
Meeting Document : WG-FSA-14/62 : Autor(es): Y. Ladroit, R.L. O’Driscoll and S. Mormede (New Zealand)
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Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys
Paper Title: Prey monitoring surveys: a discussion of the characteristics necessary in prey ... distribution to relate to changes in predator demography. The paper discusses the constraints imposed on such ... DISCUSSION OF THE CHARACTERISTICS NECESSARY IN PREY SURVEYS I. Everson (United Kingdom) Abstract The ... CCAMLR Ecosystem Monitoring Programme requires information on prey distribution to relate to changes in ... CHARACTERISTICS NECESSARY IN PREY SURVEYS Inigo Everson British Antarctic Survey Natural Environment ... parameters is believed to be praticable. Evaluation of the cause of changes in the values of these ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Autor(es): Everson, I.
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An updated descriptive analysis of the Antarctic toothfish (Dissostichus mawsoni) tagging scheme in the Ross Sea for the years 1997/98 to 2004/05
, recapture rates have tended to be higher in the northern and eastern SSRUs 88.1C and 88.2E. The maximum ... Abstract: An updated descriptive analysis of the toothfish tagging programme carried out in ... by area over the past three years have been in the same proportion as the catch by area. However ... 2001, but is still smaller than the mean size of fish taken in the commercial catch. Larger toothfish ...
Meeting Document : WG-FSA-05/34 : Autor(es): A. Dunn, S.M. Hanchet and K. Maxwell (New Zealand)
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REPORT OF THE UK GROUNDFISH SURVEY AT SOUTH GEORGIA (CCAMLR SUB-AREA 48.3) IN JANUARY 2009
assumed to be 3+. Very few juvenile fish were observed except in the south eastern sector of the South ... Abstract: In January 2009 the UK undertook a bottom trawl survey of CCAMLR Sub-area 48.3 on the ... GROUNDFISH SURVEY AT SOUTH GEORGIA (CCAMLR SUB-AREA 48.3) IN JANUARY 2009 Approval: Approved ...
Meeting Document : WG-FSA-09/09 : Autor(es): M. Belchier, R.E. Mitchell, M.A. Collins, L. Kenny, M. Taylor, J. Nelson and L. Featherstone (United Kingdom)
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Consideration of major issues in ecosystem monitoring and management
Paper Title: Consideration of major issues in ecosystem monitoring and management Abstract ... interactions and the manner in which their populations vary naturally. Large-scale interactions are catered for ... in the Krill Yield Model (KYM). Smaller-scale interactions centre around three main categories: the ... availability of krill, variation in vital rates of the dependent species and the overlap between commercial ... . 9 (2002): 213–232 213 CONSIDERATION OF MAJOR ISSUES IN ECOSYSTEM MONITORING AND MANAGEMENT I ... for information on harvested and dependent species, their interactions and the manner in which their ... populations vary naturally. Large-scale interactions are catered for in the Krill Yield Model (KYM ... ). Smaller-scale interactions centre around three main categories: the availability of krill, variation in ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Autor(es): Everson, I
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Revised proposal for the ongoing research plan on Patagonian toothfish (Dissostichus eleginoides) in Division 58.4.4b (2016/17–2020/21)
the research objectives. The survey design has been amended to avoid sea pen hotspots in the eastern ... this research plan in 2015 and a joint proposal was submitted for the first time in 2016 (WG-SAM-16/06 ... and improved the revised research plan presented in SC-CAMLR-XXXVII Annex 12 and redefined slightly ... whales (O. orca) ecology and depredation ”) are addressed in two documents submitted at WG-SAM-19. We ...
Meeting Document : WG-FSA-2019/64 : Autor(es): Delegations of Japan and France
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Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia
Paper Title: Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around ... careful consideration of the data and available methods, several errors are noted in earlier estimates ... , 1905) from South Georgia waters began in the 1960s and large-scale catches have been reported from ... NATURAL MORTALITY RATE IN THE MACKEREL ICEFISH (CHMPSOCEPHALUS GUNNARn AROUND SOUTH GEORGIA I. Everson ... and available methods, several errors are noted in earlier estimates. Unfortunately, because none of ... INTRODUCTION In age-structured models of fish population dynamics, total mortality (Z) can be estimated ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 245–257 : Autor(es): Everson, I