Résultats de la recherche

1. A critical issue for feedback management – how do we determine the level of functional overlap between krill fishing operations and penguin foraging activity?

   Abstract:  The spatial distribution of the Antarctic krill fishery in Subareas 48.1 to 48.3 has ... changed over time. The majority of catches in Subarea 48.1 are now taken south of the South Shetland ... Islands, following regional decreases in seasonal sea-ice cover. As the cumulative spatial footprint of ... target the same type types of krill swarms in the same places). In contrast to Subarea 48.1, the fishery ...

   Meeting Document : WG-EMM-15/11 : Auteur(s): P.N. Trathan, J.R.D. Silk, S.L. Hill (United Kingdom) and H.J. Lynch (USA)

2. Diet of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea region, Antarctica

   Abstract:  The diet of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region was ... stomach contents of toothfish could be used to detect ecosystem change in the Ross Sea region, with a ... explained some variation in stomach contents in the Mawson and Iselin Bank block, the proportion of variance ... . Overall, the diet of sub-adult toothfish was similar to that of adult toothfish, with a dominance of ...

   Meeting Document : WG-FSA-12/52 : Auteur(s): D.W. Stevens, M.R. Dunn, M.H. Pinkerton and J.S. Forman (New Zealand)

3. A spatial multi-species operating model of the Antarctic Peninsula krill fishery and its impacts on land-breeding

   management units (SSMUs) in the Scotia Sea, to reduce the potential impact of fishing on land-based predators ... envelopes rather than in point estimate form, giving a truer reflection of the uncertainty inherent in ... Abstract:  An updated version of the Spatial Multi-species Operating Model (SMOM) of krill ... advice regarding the subdivision of the precautionary catch limit for krill among 15 small-scale ...

   Meeting Document : WG-SAM-07/12 : Auteur(s): É.E. Plagányi and D.S. Butterworth (South Africa)

4. Estimation of natural mortality using catch-at-age and aged mark-recapture data: a simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation

   realistic. In simulation studies of multiple years of releases, both the BODE and CCODE models gave accurate ... bias in estimation of M for both the BODE and CCODE models. This problem was reduced so that bias in ... CCODE model estimates of M became progressively smaller as less “severe” selectivity was imposed in the ... other model parameters in integrated assessments via CASAL for the Heard and McDonald Islands (HIMI ...

   Meeting Document : WG-SAM-10/11 Rev. 1 : Auteur(s): S.G. Candy (Australia)

5. Diet of two icefish species from the South Shetland Islands and Elephant Island, Champsocephalus gunnari and Chaenocephalus aceratus 2001–2003

   importance of other taxa (Themisto gaudichaudii, mysids, myctophids) in the diet was negligible. The average ... Abstract:  The summer diet of two species of icefishes (Channichthyidae) from the South Shetland ... 2001 to 2003. C. gunnari fed almost exclusively on krill (Euphausia superba) in all years. The ... % body weight per day. Most of the stomachs of C. aceratus were empty. Stomachs with food contained ...

   Meeting Document : WG-FSA-03/61 : Auteur(s): H. Flores, K.-H. Kock, S. Wilhelms (Germany) and C.D. Jones (USA)

6. Modeling the growth dynamics of Antarctic krill

   resulted in the transfer of individuals to the next highest size class (growth), whereas negative net ... in the current literature. The model was forced with an environmental time series of food (pelagic ... that were consistent with observations of experimentally starved individuals. the annual change in ... designed to examine the effect of the ingestion of sea-ice algae in the late winter and early spring. The ...

   Meeting Document : WG-EMM-96/68 : Auteur(s): Lascara, C.M., Hofmann, E.E.

7. Circumpolar connections between Antarctic krill (Euphausia superba Dana) populations: Investigating the roles of ocean and sea ice transport

   critical food source and shelter, particularly in the early life stages. Advective modelling of transport ... potential roles of the ocean and sea ice in maintaining the observed circumpolar krill distribution. We show ... interaction with sea ice is important in determining the large-scale distribution of krill and its associated ... in the Southern Ocean. Krill have a close association with sea ice which provides access to a ...

   Meeting Document : WG-EMM-07/P10 : Auteur(s): S.E. Thorpe, E.J. Murphy and J.L. Watkins (United Kingdom)

8. Estimating the abundance of pack-ice seals off east Antarctica

   helicopters to estimate the density of seals hauled out on the ice in survey strips. The probability of ... Abstract:  A survey was undertaken to provide estimates of the abundance of crabeater, Ross and ... leopard seal populations in 1,500,000 km2 of pack-ice off east Antarctica between longitudes 60-150oE ... -linked dive recorders were deployed on a sample of seals to estimate the probability of seals being ...

   Meeting Document : WG-EMM-05/23 : Auteur(s): C. Southwell (Australia), D. Borchers, C. Paxton (United Kingdom), B. de la Mare (Canada), P. Boveng (USA), A.S. Blix and E.S. Nordoy (Norway)

9. Sensitivity analysis identifies high influence sites for estimates of penguin krill consumption on the Antarctic Peninsula

   models of standing krill biomass and the design of a sustainable krill fishery for the Scotia Sea ... . Antarctic krill (Euphausia superba) is a significant component of diet for penguins breeding in this region ... in krill predation estimates. We use a comprehensive database of Antarctic penguin abundances to ... of pygoscelid penguins breeding in this region. We find that a high quality survey of Zavodovski ...

   Meeting Document : WG-EMM-12/P02 : Auteur(s): H.J. Lynch, N. Ratcliffe, J. Passmore, E. Foster and P. N. Trathan

10. Proposal to standardise the submission of meeting documents to working groups

    this would result in a standard set of guidelines for the submission of meeting documents to working ... Abstract:  At the request of the Scientific Committee, the Secretariat has prepared a single ... reference document which provides guidelines for the submission of meeting documents to the Scientific ... Committee, WG-EMM and WG-FSA (including ad hoc WG-IMAF). In doing so, the Secretariat noted some Working ...

    Meeting Document : WG-FSA-05/15 : Auteur(s): Secretariat

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