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1. Geographical differences in the condition, reproductive development, sex ratio and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Subarea 88.1)

   . Dissostichus mawsoni samples from the northern part of the Ross Sea showed that this component of the ... with the southern group (in which the distribution was multimodal), showed a consistent and ... . It was noted over the 2001/02 and 2002/03 seasons, that with the arrival of polar darkness for ... detail can currently be extracted from this information with any statistical confidence. However ... given fishing season. In this context, the argument would be that some proportion of the accessible ... is not consist- ent with this hypothesis. Alternatively there could be an interchange of fish ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 27–45 : Autor(es): Fenaughty, J.M

2. Antarctic krill and climate change

   particular, it was concluded that current precautionary management measures need to be maintained, until ... Abstract:  During April 2011, a multi-national group of scientists with expertise on Antarctic ... ocean warming, sea ice loss, and ocean acidification. It was concluded that the cumulative impact of ... climate change on krill is probably negative. To be able to account for climate change-induced ...

   Meeting Document : SC-CAMLR-XXX/BG/03 : Autor(es): Delegation of the European Union

3. Variability and predictability of Antarctic krill swarm structure

   ) echosounder, concurrent with net sampling. The acoustic data were analysed through applying a swarm ... , containing swarms that were isolated (>100 km away from the next swarm). The distribution of swarm types ... over the survey grid was examined with respect to a number of potential explanatory variables ... immature krill. We propose that, at the mesoscale level, the structure of swarms switches from being ...

   Meeting Document : WG-EMM-10/P10 : Autor(es): G.A.Tarling, T. Klevjer, S. Fielding, J. Watkins, A. Atkinson, E. Murphy, R. Korb, M. Whitehouse and R. Leaper

4. Adult male Antarctic fur seals: tourists, trouble makers or marine ecosystem sentinels?

   when effort is at is maximum at the South Orkney Islands. We recommend that this overlap should be ... considered in understanding the functional response of penguins and suggest that male AFS could be a useful ... Abstract:  Resource competition often results in mechanisms that ameliorate its effects, typically ... spatial and temporal overlap between predators that exploit the same resource then is fundamental to ...

   Meeting Document : WG-EMM-2019/49 : Autor(es): A. Lowther, C. Lydersen and K. Kovacs

5. Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data

   datasets were calculated by the multistage sampling formula with the variance terms derived from the ... to 10% haul coverage. These results suggest that data collection by scientific observers on board ... statistical precision required for the specific objective of a study that includes consideration of the cost ... , it is assumed that krill length within a haul would be expected to have a unimodal distribution. To ... with the variance terms obtained from hierarchical Bayesian modelling indicates that the relationship ... change depending on data type. This suggests that although the lower limit of sample size should be ... - ommendation of this study is that the lower limits of haul sample size have to be set for 30–50 hauls within ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Autor(es): Okuda, T. and M. Kiyota

6. Further development of coarse- and medium-scale spatially explicit population dynamics operating models for Antarctic toothfish in the Ross Sea region

   sensible, with a clear pattern that the proportions mature were a function of location and age. Tag release ... and medium-scale spatial resolution and consider scenarios where abundance can be present over the ... program allows implementation of an aggregate movement model for use with large numbers of areas as a ... discrete time-step state-space model that represents a cohort-based population age structure in a spatially ...

   Meeting Document : WG-FSA-12/44 : Autor(es): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

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

   largely represents a mechanism for generating discussion that we hope will be useful to all Members ... of what we present here can, where appropriate, be merged with elements developed by others to ... plans to support marine protected areas (MPAs).  Although CM 91-04 provides general guidance that such ... research pursuant to the specific objectives of the MPA; (b) other research consistent with the specific ...

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

8. Using predators and their prey to characterise the status of the marine ecosystem at South Georgia

   , coupled with data that describe the density of their principal prey, Antarctic krill. Here we explore some ... of the longest time series of such data yet available, using records that were closely matched with ... status of marine predators might be used to inform ecosystem-based management approaches. In the ... consistent ecological time periods. Our results show that: (i) at the larger scale, some predator variables ...

   Meeting Document : WG-EMM-16/28 : Autor(es): P. Trathan, S. Fielding, S. Hill, M. Belchier and J. Forcada

9. Population dynamics of the wandering albatross Diomedea exulans at Marion Island: long-line fishing and environmental influences

   that attempts to breed in a given year. Changes in several demographic parameters that appear to be ... in the Marion Island population has fluctuated over the past three decades and appears to be the ... breeders in the population was positively correlated with the maximum ENSO index, whereas the annual ... survival rates of breeding adults were negatively correlated with Japanese pelagic longline fishing effort ...

   Meeting Document : WG-EMM-03/11 : Autor(es): D.C. Nel, F. Taylor, P.G. Ryan and J. Cooper (South Africa)

10. Population dynamics of wandering albatrosses Diomedea exulans at sub-Antarctic Marion Island: longline fishing and environmental influences

    changes in several demographic parameters that appear to be influenced by both environmental and ... the past three decades and appears to be the result of both real changes in the size of the population ... and changes in the proportion of the population that attempts to breed in a given year. We describe ... anthropogenic effects. The proportion of first-time breeders in the population was positively correlated with ...

    Meeting Document : WG-FSA-02/16 : Autor(es): D.C. Nel, P.G. Ryan and J. Cooper (South Africa)

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