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1. 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 ... are considered for visual predators to feed in the slope/offshore region at night:(l) krill showed more uniformal ... that krill may be easily found in the slope/offshore region; (2) krill tend to be larger in body size ... and more matured in the slope/offshore region than those in the inshore region; larger gravid female krill ...

   Meeting Document : WG-EMM-96/49 : Author(s): 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.

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

   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 relationships ... the summer showed the closest relationship with krill abundance, especially those for species with foraging ...

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

3. 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 Adelie (Pygoscelis ... these estimates with catch statistics from the Antarctic krill fishery. Published data on field metabolic rate ... , chinstrap penguins were the most significant krill predators during the period examined, consuming ...

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

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

   that 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 potentially ... variability and fishing pressure on krill availability at scales relevant to predators.  In this context, our ...

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

5. 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 ... and an 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 largest ...

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

6. Developing layers for a Risk Assessment for Subarea 48.1 using data from at-sea sightings

   Abstract:  CCAMLR has endorsed the use of the Risk Assessment framework to apportion the krill ... catch limits in order to minimise the risk of the fishery to krill dependent predators. We plan to apply ... to identify the most appropriate way to spread catch limits for the krill fishery. The risk assessment ... framework requires data layers describing the distribution and krill consumption by krill-dependent ...

   Meeting Document : WG-EMM-2019/23 : Author(s): V. Warwick-Evans, L. Dalla Rosa, E. Secchi, E. Seyboth, N. Kelly and P.N. Trathan

7. Design of the Italian acoustic survey in the Ross Sea for the Austral summer 2003/04

   -2004. The research consists of three core activities: (1) Acoustic sampling on krill (E. superba ... and E. crystallorophias) populations and concurrent censuses of their top predators for estimating krill distribution ... and abundance, and the effects of predators on altering them; (2) Net sampling for describing krill demography ... masses which influence krill ecological behaviour. All these activities will be undertaken synoptically ...

   Meeting Document : WG-EMM-02/31 : Author(s): M. Azzali, A. Sala and S. Manoukian (Italy)

8. Acoustic visualization of the three-dimensional prey field of foraging chinstrap penguins

   , the Antarctic krill, a keystone prey species in the Southern Ocean food web. It has been difficult to evaluate ... these concerns because of problems associated with determining the availability of krill to their natural ... predators. Here, we report a novel method for assessing prey availability to an important krill predator ... distribution of krill within a 1852 X 1852 X 100 m volume of ocean. Our study revealed the presence of at least ...

   Meeting Document : WG-Joint-94/12 : Author(s): J.E. Zamon, C.H. Greene, E. Meir, D.A. Demer, R.P. Hewitt and S. Sexton (USA)

9. Some notes on by-catch of fishes and salps caught by the fishery vessel Niitaka Maru in the vicinity of the South Shetland Islands (January to February 1999)

   Abstract:  Scientific observations on fishes and salps incidentally caught during commercial krill ... hauls and those estimated value was 20 to 3560 ind./t of krill. By-catch fishes fed on Thysanoessa ... macrura and Euphausia superba was not found in their stomachs. Abundance of salps in krill catches could ... have been depended on the density of krill concentration. At least, the large incidental catch of salps ...

   Meeting Document : WG-EMM-00/54 : Author(s): T. Iwami, S. Kawaguchi and M. Naganobu (Japan)

10. What’s the catch? Profiling the risks and costs associated with marine protected areas and displaced fishing in the Scotia Sea

    scenarios and associated displacements of the Antarctic krill fishery in the Scotia Sea by quantifying ... their potential to affect risks of depleting krill-dependent predators and costs to the fishery. We employed both ... a static assessment (based on the design of each MPA scenario and the distributions of krill fishing ... and krill-dependent predators) and a dynamic risk assessment (based on a minimally realistic, spatially ...

    Meeting Document : WS-SM-18/P03 : Author(s): E.S. Klein and G.M. Watters

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