Resultados de la búsqueda
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PENGUIN RESPONSES TO CLIMATE CHANGE IN THE SOUTHERN OCEAN
Abstract: Penguins are adapted to live in extreme environments, but they can be highly sensitive ... species-specific adaptations also constrain potential changes in phenology, and are unlikely to be ... tolerance; species with low adaptability, particularly the ice-obligates, may therefore be more affected by ...
Meeting Document : WG-EMM-09/P09 : Autor(es): J. Forcada and P.N. Trathan
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ALLOCATING THE PRECAUTIONARY CATCH LIMIT FOR KRILL AMONGST THE SMALL-SCALE MANAGEMENT UNITS IN AREA 48: THE IMPLICATIONS OF DATA UNCERTAINTIES
that a strong case can be made against Option 4, which is likely to increase ecosystem risk when the ... suggest that the data documenting the distribution of krill standing stock are likely to be more reliable ... . However, we note that though Option 3 appears to be the most favourable, there is little documentary ...
Meeting Document : WG-EMM-08/12 : Autor(es): P.N. Trathan and S.L. Hill (United Kingdom)
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GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH
(2003), the biomass of mackerel icefish was estimated to be 80,426 tonnes, with a lower 1-sided 95% CI ... 2007/08 catch that remained after the survey (1709 tonnnes) will be taken. Scenario 1, which included ... was successful. The icefish appeared to be dispersed, which is amenable to a random trawl survey ...
Meeting Document : WG-FSA-08/28 : Autor(es): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)
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Factors influencing Antarctic krill distribution in the South Shetlands
factors were considered to be responsible for this characteristic distribution of krill. Diatoms were the ... . Hence, higher diatom biomass may be one of factors forming krill concentrations in the inshore and ... . The frontal zone was considered to be favorable spawning ground for krill: not only because of the ...
Meeting Document : WG-KRILL-93/38 : Autor(es): T. Ichii, H. Ishii and M. Naganobu (Japan)
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Research and monitoring to support an MPA in the Ross Sea Region
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 ... of what we present here can, where appropriate, be merged with elements developed by others to ...
Meeting Document : WG-EMM-12/46 : Autor(es): G.M. Watters and C.S. Reiss (USA)
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Competition-mediated prey availability drives Adélie penguin (Pygocelis adeliae) chick size, mass and condition at colonies of differing size in the southern Ross Sea
populations. Body size, mass and condition may be important determinants of an organism’s ability to survive ... periods of low resource availiability or high metabolic demand. Such effects may be particularly ... foraging. In addition, we show that in some cases, increased intraspecific competition may be a more ...
Meeting Document : WG-EMM-13/31 : Autor(es): A.L. Whitehead (Australia), P. O’B. Lyver (New Zealand), G. Ballard (USA), K. Barton, B.J. Karl (New Zealand), D.G. Ainley, K. Dugger, S. Jennings (USA), A. Lescroël (France) and P.R. Wilson (New Zealand)
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Calculating effective releases and recaptures for stock assessments based on tag detection and tagging mortality indices
in the Ross Sea region. This index was subsequently used in 2013 to select the tagging data to be ... that additional work should be undertaken to further develop this method. Previous applications of the ... recommend that the method proposed be used in the Ross Sea region stock assessment and in the Amundsen Sea ...
Meeting Document : WG-SAM-14/30 : Autor(es): S. Mormede (New Zealand)
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An updated spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
hypothesis proposed. Further data collection would be useful to improve the parameterisation of the model, in ... . We propose that the modelling platform presented here can be used to test the likelihood and examine ... movement scenario the model can also be used to examine the likely effects on the toothfish stock ...
Meeting Document : WG-SAM-14/31 : Autor(es): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Marine ecosystem acoustics (MEA): quantifying processes in the sea at the spatio-temporal scales on which they occur
monitoring. Realistic understanding of what can and cannot be achieved with the available sampling techniques ... these processes occur. In contrast, acoustic observations can be obtained on spatial scales from ... monitoring and assessment practices and it is to be hoped that they also promote and facilitate interaction ...
Meeting Document : WG-EMM-15/P01 : Autor(es): O.R. Godø, N.O. Handegard, H.I. Browman, G.J. Macaulay, S. Kaartvedt, J. Giske, E. Ona, G. Huse and E. Johnsen
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Draft updated data collection plan for the Ross Sea toothfish fishery
inform management decisions made to achieve specific goals. Any data collection plan should be drawn from ... Article II of CCAMLR can be summarised as: the target fished population is above a level which ensures ... weight be included as a requirement in the Type II biological measurements for observer sampling from the ...
Meeting Document : WG-FSA-15/40 : Autor(es): S.M. Hanchet, S.J. Parker and S. Mormede (New Zealand)