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1. CCAMLR 2000 revisited

   Abstract:  The total abundance of krill in the Scotia Sea was estimated from an international ... revise the precautionary catch level for krill in the area from 1.5 to 4 Mt (SC-CAMLR, 2000). By ... incorporating recent improvements in the remote identification and target strength (TS) of krill, a range of ... krill biomass was estimated, 108.0 Mt (CV=10.4%) to 192.4 Mt (CV=11.7%), depending solely on the ...

   Meeting Document : WG-EMM-07/30 Rev. 1 : Автор(ы): D.A. Demer, A.M. Cossio and C.S. Reiss (USA)

2. The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at South Georgia

   was investigated during the pup rearing period (January- March) of 1991-1994. Antarctic Krill ... krill taken by fur seals. The distribution of krill sizes taken suggest that fur seals are not actively ... selecting particular sizes of krill and, therefore, that the krill in the diet reflects the krill available ... around South Georgia. The absence of group 3 krill (44-48 mm in length) in the South Georgia area, as ...

   Meeting Document : WG-EMM-95/28 : Автор(ы): Arnould, J.P.Y., Reid, K.

3. Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem

   the East Antarctica ecosystem in the context of two hypotheses, the ‘krill surplus’ hypothesis in the ... middle of the past century and the recovery of krill-eater large whales since the 1980’s. There was an ... interest to investigate the effects of those events on other krill predators such as the Antarctic minke ... Antarctica (70°E-170°W) showed that the increased krill availability in the middle of the past century could ...

   Meeting Document : WG-EMM-16/64 : Автор(ы): Y. Fujise and L.A. Pastene

4. Spatial distribution of predator/prey interactions in the Scotia Sea: implications for measuring predator/fisheries overlap

   for Antarctic krill Euphausia superba in the South Shetland Islands have used different measurement ... scales and arrives at contradictory conclusions. At-sea data from observations of krill predators during ... the CCAMLR 2000 krill survey were used to identify the areas of potential overlap with fisheries in ... distribution of predators, krill and krill fisheries and an effort-corrected index of relative abundance as a ...

   Meeting Document : WG-EMM-02/14 : Автор(ы): K. Reid, M. Sims, R.W. White and K.W. Gillon (United Kingdom)

5. Cycles of Euphausia superba recruitment evident in the diet of Pygoscelid penguins and net trawls in the South Shetland Islands, Antarctica

   Abstract:  Size and sex of Antarctic krill taken from chinstrap and gentoo penguin diet were ... evaluate penguin diet as a sampling mechanism and to look at trends in krill populations. Both penguin diet ... and net samples revealed a 4-5 year cycle in krill recruitment with one or two strong cohorts ... sustaining the population during each cycle. Penguin diet samples contained adult krill of similar lengths to ...

   Meeting Document : WG-EMM-07/P2 : Автор(ы): A. Miller and W. Trivelpiece (USA)

6. Ecosystem indicators: factors affecting the choice of predator performance indices for use in monitoring programmes

   . Using indices of predator performance from four species of krill-eating predator together with ... independent ship-based acoustic estimates of krill abundance from South Georgia the relationship between a ... range of indices of predator performance and krill abundance was examined. There was a distinct ... the summer showed the closest relationship with krill abundance, especially those for species with ...

   Meeting Document : WG-EMM-03/43 : Автор(ы): K. Reid (United Kingdom)

7. Penguins, fur seals, and fishing: prey requirements and potential competition in the South Shetland Islands, Antarctica

   their foraging efforts on a single species, Antarctic krill (Euphausia superba). Because these predators ... may have a significant effect on krill abundance, we estimated the energy and prey requirements of ... , Antarctica and compared these estimates with catch statistics from the Antarctic krill fishery. Published ... offspring. Due to their large population size, chinstrap penguins were the most significant krill predators ...

   Meeting Document : WG-EMM-99/57 : Автор(ы): D.A. Croll and B.R. Tershy (USA)

8. Comparisons in prey distribution between inshore and offshore foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island

   the slope/offshore region was less abundant with krill and more remote from their breeding sites than ... advantages are considered for visual predators to feed in the slope/offshore region at night:(l) krill showed ... the inshore region so that krill may be easily found in the slope/offshore region; (2) krill tend to ... ; larger gravid female krill, which may be easily found and captured by predators, were available in the ...

   Meeting Document : WG-EMM-96/49 : Автор(ы): Ichii, T., Bengtson, J.L., Boveng, P., Cameron, M.F., Naganobu, M., Meyer, W.R., Hiruki, L.M., Takao, T., Jansen, J.K., Kawaguchi, S.

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

   environment have significant potential to affect populations of Antarctic krill Euphausia superba, a keystone ... foodweb species. To investigate this we analysed data on krill-eating predators from 1980-2000 at South ... increase in the frequency of years of low reproductive output. Changes in the population structure of krill ... , and its relationship with reproductive performance, suggest that the biomass of krill within the ...

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

10. Coastal weather drives foraging behaviour of chinstrap penguins, Pygoscelis antarctica

    supports them. In the southwest Atlantic sector of the Southern Ocean, Antarctic krill (Euphausia superba ... the ecosystem in an adaptive framework for sustainably managing krill catch levels, performance ... indices of krill predators have been proposed as a proxy for krill abundance.  However, there are several ... environmental variability and fishing pressure on krill availability at scales relevant to predators.  In this ...

    Meeting Document : WG-EMM-18/P14 : Автор(ы): A.D. Lowther, P. Trathan, A. Tarroux, C. Lydersen and K.M. Kovacs

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