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

   Georgia. Indices of population size and reproductive performance showed declines in all species and an ... increase in the frequency of years of low reproductive output. Changes in the population structure of krill ... predators reveals a system change in an Antarctic marine ecosystem Approval:  Approved ...

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

2. Habituation to an acoustic harassment device (AHD) by killer whales depredating demersal longlines

   activation and 30 phases during which the AHD was turned off. Two multi-exposed killer whale social units ... :  Habituation to an acoustic harassment device (AHD) by killer whales depredating demersal longlines Approval ...

   Meeting Document : WG-FSA-14/P04 : Autor(es): P. Tixier, N. Gasco, G. Duhamel and C. Guinet

3. Estimating prey consumption of the non-breeder component of an Adélie penguin population

   as an element in CCAMLR’s ecosystem-based approach to management for the krill fishery in the ... Abstract:  Estimating the consumption of prey by higher-order predators is a priority for WG-EMM ... Southern Ocean. Previous assessments of prey consumption for seabirds have focussed on breeders using data ... of an Adélie penguin population can be substantial compared with the size of the breeder population ...

   Meeting Document : WG-EMM-17/12 : Autor(es): L. Emmerson and C. Southwell

4. Research and monitoring to support an MPA in the Ross Sea Region

   provide an improved plan that both usefully supports an MPA in the RSR and indicates a way forward for ... Abstract:  Conservation Measure 91-04 establishes the requirement for research and monitoring ... should be structured.  Here we present a draft plan to support an MPA in the Ross Sea Region (RSR) and ... largely represents a mechanism for generating discussion that we hope will be useful to all Members ...

   Meeting Document : WG-EMM-12/46 : Autor(es): G.M. Watters and C.S. Reiss (USA)

5. An assessment of toothfish in Subarea 48.3 using CASAL

   frequencies, and a poor fit to the CPUE data, for which an even higher process error CV was estimated (0.46 ... Abstract:  The CASAL software has been successfully applied to an assessment of the stock of ... , with an extensive range of sensitivity tests and examination of diagnostics. A baseline assessment ... the catch length frequencies, but a poor fit to the early CPUE data, for which a substantial process ...

   Meeting Document : WG-FSA-05/16 : Autor(es): R.M. Hillary, G.P. Kirkwood and D.J. Agnew (United Kingdom)

6. An integrated stock assessment of Patagonian toothfish (Dissostichus eleginoides) in CCAMLR Subarea 48.4

   Abstract:  This paper describes an update to the CASAL assessment of Patagonian toothfish (D ... . eleginoides) in Subarea 48.4. The assessment data time series are updated with the observations for the 2014 ... data for the full time series, a revised maturity ogive, and changes to the assumed tag growth ... retardation period. Stock projections indicate that the stock is in healthy condition and that an annual yield ...

   Meeting Document : WG-FSA-15/28 : Autor(es): M. Soeffker, V. Laptikhovsky, T. Earl and C. Darby (United Kingdom)

7. AN UPDATED DESCRIPTION AND PARAMETERISATION OF THE SPATIAL MULTI-SPECIES OPERATING MODEL (SMOM )

   Abstract:  An updated version of the Spatial Multi-species Operating Model (SMOM) of krill ... -predator-fishery dynamics is described. This has been developed in response to requests for scientific ... advice regarding the subdivision of the precautionary catch limit for krill among 15 small-scale ... using the WG-SAM set of reference observations for Area 48 (the SAM calendar) is described. Alternative ...

   Meeting Document : WG-SAM-08/17 : Autor(es): É.E. Plagányi and D.S. Butterworth (South Africa)

8. Development of an acoustic sensor to estimate catch directly from the trawl during continuous krill harvesting

   Abstract:  This paper describes experiments and plans for development of an acoustic sensor to ... support  precise catch reporting for the continuous krill harvesting fishery.  Author(s):  O.R. Godø, B ... . Krafft and F. Grebstad Title:  Development of an acoustic sensor to estimate catch directly from the ... Secretariat Workflow Status:  Content Approved Document Release Consent:  No Delegation responsibility for ...

   Meeting Document : WG-EMM-2019/15 : Autor(es): O.R. Godø, B. Krafft and F. Grebstad

9. An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill in the Weddell Sea

   Abstract:  A calibrated 120 kHz single-beam echo-sounder was integrated into an ocean glider and ... deployed in the Weddell Sea, Southern Ocean. The glider was deployed for two short periods in January 2012 ... density estimates by up to 8-fold. Glider-based, echo-sounder–derived krill density profiles for the two ... significant difference from observed profiles. Simulated glider dives required at least an order of magnitude ...

   Meeting Document : WG-EMM-14/P02 : Autor(es): D. Guihen, S. Fielding, E. Murphy, K. Heywood and G. Griffiths

10. Update on the ‘Demersal interactions with marine benthos in the Australian EEZ of the Southern Ocean: an assessment of the vulnerability of benthic habitats to impact by demersal gears’ project

    Abstract:  We provide an update on progress in the FRDC and industry-funded project “Demersal ... interactions with marine benthos in the Australian EEZ of the Southern Ocean: an assessment of the ... technologies and unique datasets for quantifying the dynamics and extent of the interactions between demersal ... fishing gears and deep sea habitats in the Southern Ocean, will assist with providing key components for ...

    Meeting Document : WG-EMM-10/23 : Autor(es): G.P. Ewing, D.C. Welsford and A.J. Constable (Australia)

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