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1. A RE-APPRAISAL OF THE TOTAL BIOMASS AND ANNUAL PRODUCTION OF ANTARCTIC KRILL

   production are still very uncertain. Recently, circumpolar krill databases, combined with growth models and ... abundance of 8x1014 postlarvae with biomass of 379 million tonnes (Mt). These values are based on a ... of relative krill density around Antarctica with the most recent, acoustics-derived, value for the ... the total stock, with total biomass of ~133 Mt in January-February 2000. Gross postlarval production ...

   Meeting Document : WG-EMM-08/17 : Автор(ы): A. Atkinson (United Kingdom), V. Siegel (Germany), E.A. Pakhomov (South Africa), M.J. Jessopp (United Kingdom) and V. Loeb (USA)

2. Diet and trophic niche of Macrourus spp. (Gadiformes, Macrouridae) in the Ross Sea region of the Southern Ocean

   . Overall, amphipods were the dominant prey found in Macrourus spp. stomachs with an index of relative prey ... carnivorous. Other important prey were copepods (especially for fish with total length less than 30 cm), krill ... opisthopterus). Minor prey found in stomachs included isopods, mysids, salps and polychaetes, with rocks and ... ) were generally consistent with stomach contents. Carbon isotope results (δ13C =-24.7±0.8‰) were ...

   Meeting Document : WG-EMM-12/P03 : Автор(ы): M.H. Pinkerton, J. Forman, D.W. Stevens, S.J. Bury and J. Brown

3. Results from the groundfish survey conducted in CCAMLR Subarea 48.3 in January/February 2011

   between the 27th January and 6th February 2011. 87 random hauls were completed, with good coverage across ... mean biomass of 49,353 tonnes was estimated for mackerel icefish, with a lower 1-sided 95% CL of 31,373 ... tonnes. Euphausiidae was the dominant prey item in the mackerel icefish diet with increased dietary ... Patagonian toothfish were greater than in 2009 and 2010, with a large haul of 40-45cm fish (1.6t) around Shag ...

   Meeting Document : WG-FSA-11/29 : Автор(ы): J. Brown, S. Gregory, K. Brigden, R. Benedet, O. Hogg, P. Brewin and L. Featherstone (United Kingdom)

4. Testing early life connectivity using otolith chemistry and particle-tracking simulations

   ), a species with a long pelagic larval phase, along the Antarctic Circumpolar Current (ACC) and ... compared the chemistry with simulated particle transport using a circulation model. Material laid down in ... Georgia consistent with a population boundary, and evidence of finer-scale heterogeneity between sampling ... eastern and northern shelves, indicating a single, self-recruiting population. Consistent with the otolith ...

   Meeting Document : WG-FSA-10/P02 : Автор(ы): J. Ashford, M. La Mesa, B.A. Fach, C. Jones and I. Everson

5. Mean circulation and hydrography in the Ross Sea sector, Southern Ocean: representation in numerical models

   900m at the gyral eastern end compare favourably with float data. On-shelf model depth-averaged west ... –east flow is relatively consistent with that reconstructed from longline fishing records. These flows ... have components associated with isopycnal gradients in both light and dense waters. The climate models ... reproduce characteristic isopycnal layer inflections (‘V’s) associated with the observed Antarctic Slope ...

   Meeting Document : WG-EMM-10/P13 : Автор(ы): G.J. Rickard, M.J. Roberts, M.J.M. Williams, A. Dunn and M.H. Smith (2010)

6. Multiyear changes in distribution and abundance of Salpa thompsoni in the Western Antarctic Peninsula region

   characterized by a circumpolar distribution and its appearance is clearly associated with the occurrence of the ... analyses, coupled with environmental data, obtained both during sampling and from satellite data, allowed ... to prove that the distribution of salps was significantly correlated with water temperature and ... suggest that with climatic changes, such as temperature increase and reduction of sea-ice cover, the ...

   Meeting Document : WG-EMM-16/75 : Автор(ы): A. Panasiuk, A. Słomska, J. Wawrzynek, M. Konik and A. Weydmann

7. An illustrative management procedure for exploring dynamic feedback in krill catch limit allocations among small-scale management units

   which simulates the “true” dynamics of the resource with tests across a wide range of scenarios for the ... here have a feedback structure, and hence are able to react and self-correct. It is important, as with ... subdivide the krill catch between SSMUs. Different MPs are then simulation tested with their performances ... average krill catches per SSMU associated with each MP. The key assumption made here is that data will be ...

   Meeting Document : WG-EMM-06/28 : Автор(ы): É. Plagányi and D. Butterworth (South Africa)

8. RESOURCES EVALUATION OF ANTARCTIC KRILL EUPHAUSIA SUPERBA DANA USING AREAL TRAWLING AND HYDRO-ACOUSTIC DATA

   provided with probability methods and spatial analyses requiring knowledge of statistical distribution ... analyses procedures applied for trawling and hydro-acoustic sampling have to in compliance with the rules ... . Traditional concepts of observation system concerning the resources of krill should be further developed with ... applications of rules and parameters dealing with statistical distributions of population density, information ...

   Meeting Document : WG-SAM-08/P01 : Автор(ы): L.A. Kovalchuk (Ukraine)

9. Uncertainty in acoustic surveys of Antarctic krill

   acoustic surveys. The variance in system calibration with a standard sphere was evaluated in relation to ... different standard spheres with the results of a calibration by self-reciprocity (Demer and Hewitt ... with a standard sphere were estimated as-1.2 dB and ±0.3 dB, respectively. Uncertainty in estimating ... higher than those calculated disregarding biases due to DVM, with a standard deviation of 0.6 dB ...

   Meeting Document : WG-EMM-95/72 : Автор(ы): Demer, D.A.

10. Effects of recruitment variability and natural mortality on Generalised Yield Model projections and the CCAMLR Decision Rules for Antarctic krill

    Peninsula were used as proxies for recruitment variability. Simulations were run for 21 years with either no ... fishing, or with fishing at either the trigger level (gamma = 0.0103), the precautionary catch limit ... ;variable mortality" (M with a uniform distribution between 2 and 0.8, or annual survivals varying ... "escapement" rule. For the base case simulations with M=0.8 and additional recruitment CVs of ...

    Meeting Document : WG-EMM-12/26 : Автор(ы): D. Kinzey, G. Watters and C. Reiss (USA)

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