Résultats de la recherche

1. Estimation of the biomass of krill in Prydz Bay during January/February 1991 and February/March 1992 using echo integration

   SIBEX-II estimate falls in the middle of the range of densities estimated from seven reported surveys ... Abstract:  Hydroacoustic surveys of the abundance of krill (Euphausia superba) in the Prydz Bay ... association of krill with the shelf break in the western part of the survey area but also found that the shelf ... break was in general not a region of relatively high krill abundance. The mean surface density of krill ...

   Meeting Document : WG-KRILL-92/23 : Auteur(s): I. Higginbottom and T. Pauly (Australia)

2. How trophic dynamics of adult Antarctic krill Euphausia superba responses to the condition of no ice in the water during the winter: a case study at South Georgia?

   overwintering of krill in the Southern Ocean. The information on trophic variation of krill under ice-free ... waters during the winter can also provide the insight for understanding the response of krill to global ... diet of adult krill with size and month during the winter season (June to September 2016) at the South ... N values between sexes of krill. Nitrogen isotope signatures suggested increasing carnivory with ...

   Meeting Document : WG-EMM-2019/P04 : Auteur(s): G.P. Zhu, H.T. Zhang, B. Deng and Q.Y. Yang

3. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using the Japanese fishery data

   Abstract:  We examined seasonal variation in CPUE (catch per volume of trawled water) and diurnal ... vertical migration of Antarctic krill (Euphausia superba) associated with the brightness categories of the ... day based upon the angles between the center of the sun and the celestial horizon on the Scotia Sea ... twilight and shallowest around at evening twilight. The range of trawling depth was narrower in the certain ...

   Meeting Document : WG-EMM-04/44 : Auteur(s): K. Taki, T. Hayashi and M. Naganobu (Japan)

4. Preliminary results of RV Dmitriy Stefanov researches in the Antarctic area of the Atlantic Ocean in April 1992

   polygon of 30 x 30 miles in the fishing area northwestward of Coronation Island in 18-22 April,1992. The ... krill biomass was estimated in the beginning and at the end of surveys. It amounted to 56.1 and 61.2 ... thous. t respectively. During the rest of the period the hydroacoustic assessment of krill aggregation ... of perimeter. The midwater trawl hauls were made periodically. The average estimates of krill ...

   Meeting Document : WG-CEMP-92/33 : Auteur(s): L.G. Maklygin, V.N. Shnar, A.V. Remeslo, A.P. Malyshko, I.A. Trunov, I.A. Barabanov, V.P. Shopov (Russian Federation) and A.G. Shepelev (Ukraine)

5. Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL

   ) and Hillary et al. (2006) to apply the square of the individual tag loss annual rate in CASAL over ... Abstract:  The model of tag shedding implicit in CASAL is that of Kirkwood and Walker (KW) (1984 ... present to correctly apply the KW model for fish released with two tags. The solution of Dunn et al. (2005 ... -estimates the correct proportion of fish that have retained at least one tag, and are therefore detectable ...

   Meeting Document : WG-SAM-11/12 : Auteur(s): S.G. Candy (Australia)

6. Precautionary spatial protection to facilitate the scientific study of habitats and communities under ice shelves in the context of recent, rapid, regional climate change

   will lead to the loss of existing marine habitats and the creation of new habitats. In general, fauna ... nutrient input, there may be consequent loss of some species or communities. Colonisation of new habitats ... the Antarctic Peninsula region. One of the most evident signs of climate change has been ice shelf ... collapse; overall, 87% of the Peninsula’s glaciers have retreated in recent decades. Ice shelf collapse ...

   Meeting Document : WG-EMM-12/34 : Auteur(s): P.N Trathan, S.M. Grant (United Kingdom), V. Siegel and K.-H. Kock (Germany)

7. Network characterisation of the food-web of the Ross Sea, Antarctica

   pronounced peak in biomass in the lower-middle part of the food-web, a result of high biomass of ... Abstract:  A balanced ecosystem model is used to explore the system-level characteristics of the ... food-web of the Ross Sea shelf and slope before the advent of commercial fishing for Antarctic ... toothfish (Dissostichus mawsoni) in the region. We evaluate: (1) biomass and flow of organic matter by ...

   Meeting Document : WG-EMM-12/53 : Auteur(s): M.H. Pinkerton and J.M. Bradford-Grieve (New Zealand)

8. On the problem of diurnal migrations of some fish species on the South Georgia shelf (Subarea 48.3)

   substantial variations in middle size fry of both species were found at different depth levels during 24-hour ... Abstract:  The results of experiments on the South Georgia Shelf carried out in the period of 1986 ... to 1990 have been presented. Six (6) daily stations were occupied where vertical distribution of fry ... and young individuals (including adult specimens) of Champsocephalus gunnari, Champsocephalus aceratus ...

   Meeting Document : WG-FSA-99/64 : Auteur(s): I.A. Trunov, J.A. Frolkina and M.P. Konstantinova (Russia)

9. Winter distribution of chinstrap penguins from two breeding sites in the South Shetland Islands of Antarctica

   and range in the middle of the past century. Author(s):  W.Z. Trivelpiece, S. Buckelew, C. Reiss and ... Abstract:  Satellite telemetry was used to determine the winter movements and distributions of ... eight chinstrap penguins known to breed at one of two colonies in the South Shetland Islands, Antarctic ... that 4 of the birds instrumented in the 2000 winter, two from each colony, foraged largely on the shelf ...

   Meeting Document : WG-EMM-06/17 : Auteur(s): W.Z. Trivelpiece, S. Buckelew, C. Reiss and S.G. Trivelpiece (USA)

10. Assessment of the status of the toothfish stock in Subarea 48.3

    loss rates and fishery age-based selectivity. Estimations based on local depletions of toothfish ... Abstract:  We conducted several different assessments of toothfish in Subarea 48.3 using four ... apparently not sufficient to generate realistic estimates of current biomass using GYM. ASPM runs coded in AD ... likely current exploitable biomass of toothfish in Subarea 48.3 is between 45,000 and 62,000 t. GYM was ...

    Meeting Document : WG-FSA-04/82 : Auteur(s): D.J. Agnew and G.P. Kirkwood (United Kingdom)

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