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1. INCOMPLETE SEARCH EFFORT AS A POTENTIAL SOURCE OF BIAS IN BROAD-SCALE ESTIMATES OF PENGUIN ABUNDANCE DERIVED FROM PUBLISHED COUNT DATA: A CASE STUDY FOR ADÉLIE PENGUINS IN EAST ANTARCTICA

   m2 and within 500 m of the ocean) in the Australian Antarctic Territory (AAT) was mapped using a GIS ... , and the literature reviewed for evidence of the mapped habitat being searched for occupation by ... breeding Adélie penguins. The total area of potential breeding habitat was estimated to be close to 700 km2 ... and 40% of the total potential habitat area. There were marked regional differences in search effort ...

   Meeting Document : WG-EMM-PSW-08/13 : Автор(ы): C. Southwell, D. Smith and A. Bender (Australia)

2. Geographic aspects of Euphausia superba resources exploitation

   adjacent waters (subregions outside of the Scotia Sea are under pecular attention) are observed ... . Concentration of E.superba of the same order of biomass volume as in the Scotia Sea were observed at several ... subregions along the peripherie of Weddell Gyre and also nearshore of Antarctide. Offshore concentrations of ... areas should include the preliminar getting of knowledges on changeability of E.superba aggregation ...

   Meeting Document : WG-KRILL-93/04 : Автор(ы): R.R. Makarov (Russia)

3. Status of krill target strength

   Abstract:  Empirical estimates for the target strength of krill are extracted from the literature ... cause of bias in single-animal measurements, namely thresholding. Theoretical estimates for the target ... strength are derived from the deformed-cylinder scattering model assuming specific sets of physical and ... orientational parameters, for which there is an empirical basis. The theoretical estimates show a non-monotonic ...

   Meeting Document : WG-KRILL-92/11 : Автор(ы): K.G. Foote (Norway), D. Chu and T.K. Stanton (USA)

4. Geographic aspects of Euphausia superba resources exploitation

   adjacent waters (subregions outside of the Scotia Sea are under pecular attention) are observed ... ° Concentration of E.superba of the same order of biomass volume as in the Scotia Sea were observed at several ... subregions along the peripherie of Weddell Gyre and also nearshore of Antarctide. Offshore concentrations of ... areas should include the preliminar getting of knowledges on changeability of E.superba aggregation ...

   Meeting Document : WG-CEMP-92/31 : Автор(ы): R.R. Makarov (Russian Federation)

5. Research plan for toothfish in Division 58.4.4 b by Shinsei maru No. 3 in 2015/16

   results using CASAL models in research block 58.4.4b_1 are described in a separated document. The ... and CASAL OB_1b model (vulnerable biomass in 2014), respectively. The stock sizes of D. eleginoides in ... block 58.4.4b_2 is estimated at 648 tonnes only by using CPUE method, as the catch and tagging data in ... the current research operation for the next fishing season with the same survey design and total ...

   Meeting Document : WG-SAM-15/13 : Автор(ы): Delegation of Japan

6. Dietary studies of Adélie penguins through faecal DNA analysis

   Abstract:  The composition of penguin diet is currently monitored through the A8 CEMP Chick Diet ... monitoring parameter. The current Standard Method involves stomach lavage to collect the stomach contents of ... adult birds and sorting the samples to identify prey composition and mass. At WG-EMM-12 it was noted ... , procedures were under consideration. Here we discuss results from recent work using the extraction of prey ...

   Meeting Document : WG-EMM-17/13 : Автор(ы): L. Emmerson, B. Deagle, C. Waluda, M. Dunn, P. Trathan and C. Southwell

7. Competition-induced starvation drives large-scale population cycles in Antarctic krill

   Abstract:  Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth ... . Previous studies have postulated that the krill cycle is induced by periodic climatological factors, but ... , we identify intraspecific competition for food as the main driver of the krill cycle, while external ... that the cycle amplitude increases with reduction of krill loss rates. Thus, a decline of apex ...

   Meeting Document : WG-EMM-18/P05 : Автор(ы): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius

8. Foraging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill

   Abstract:  Chinstrap penguins Pygoscelis antarctica are one of the major consumers of Antarctic ... krill Euphausia superba in the Southern Ocean. To examine their foraging strategy, we studied foraging ... trips). The diving depths of our study birds were much deeper (to 179 m) than previous studies on this ... maximum depth, the typical characteristics of benthic dives. These benthic-type dives were more abundant ...

   Meeting Document : WG-EMM-03/37 : Автор(ы): A. Takahashi (Japan), M.J. Dunn, P.N. Trathan (United Kingdom), K. Sato, Y. Naito (Japan), J.P. Croxall (United Kingdom)

9. MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009

   Abstract:  The marine pelagic system around South Georgia is characterised by considerable inter ... local oceanographic and atmospheric conditions. Much of the observed variability in various fitness ... metrics for birds, seals and fish seems to be connected with the availability of Antarctic krill ... , Euphausia superba, which is a major prey species for many vertebrate populations at South Georgia. The ...

   Meeting Document : WG-EMM-09/23 : Автор(ы): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)

10. UPDATED PRELIMINARY RESULTS OF AN ECOLOGICAL RISK ASSESSMENT FOR SEABIRDS AND MARINE MAMMALS WITH RISK OF FISHERIES INTERACTIONS

    identify areas or species requiring additional management or monitoring. Our study indicated that the risk ... particularly strong overlap between fishing effort and species ranges. We tested the sensitivity of the ... adding a factor of population. We found the outcomes of the PSA analyses were robust to these effects ... . However, adult survival rates did influence the rankings, and were identified as a key parameter requiring ...

    Meeting Document : WG-FSA-08/51 : Автор(ы): S. Waugh, D. Filippi, N. Walker (New Zealand) and D.S. Kirby

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