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Foraging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill
time-depth recorders. Foraging trips of penguins could be divided into 2 groups, short diurnal (7.8 h ... ) and longer overnight (19.9 h) trips, with diurnal trips (74%) being dominant in number (263 out of 355 ... species, with modal maximum dive depth at around 90 to 100 m. Diving patterns and profiles included ... in diurnal foraging trips than overnight trips. Analysis of stomach contents showed that penguins on ...
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)
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Measurement of ocean temperatures using instruments carried by Antarctic fur seals
warmer surface water in a region in which more run-off was to be expected. The study also showed that ... . Seasonal temperature variation was apparent, and temperatures also varied between regions, and with ... bathymetry. These results were consistent with the current interpretation of the coastal oceanography around ...
Meeting Document : WG-EMM-01/56 : Автор(ы): I.L. Boyd, E.J. Hawker, M.A. Brandon and I.J. Staniland (United Kingdom)
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Variation in reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implications for southern ocean monitoring studies
in the marine environment that may relate to prey availability and thus be influenced by commercial ... Island are not synchronised with those at South Georgia. They correlate best (and especially for ... Chinstraps, which suffered badly in 1980-81 and 1982-83) with the date of ice break-out in late spring ...
Meeting Document : SC-CAMLR-VI/BG/15 : Автор(ы): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Distribution, density and relative abundance of Antarctic krill estimated by maximum likelihood geostatistics on acoustic data collected during commercial fishing operations
time periods. The results suggest that this method, combined with some additional design based coverage ... last one, were also consistent with the full data (monthly) estimate. Highly variable and lower ... by the fishing vessels, can be useful to obtain quantitative evaluations of krill density and ...
Meeting Document : WG-EMM-16/P12 : Автор(ы): E.J. Niklitschek and G. Skaret
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Investigating the uncertainty of age determinations for Patagonian toothfish (Dissostichus eleginoides) and the implications for stock assessment
aggregate into the plus group, negative errors are truncated below the minimum age, and fish with true ages ... expanded the reference collection to include an additional 50 otoliths with a mean age above 25 years. The ... matrix.We assessed misclassification matrices obtained using the revised Candy method along with two other ... of variation (c.v.) of 0.1. We compared the misclassification matrices with the observed age ...
Meeting Document : WG-FSA-14/46 : Автор(ы): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
the effect of not updating an assessment every year, and also the evolution of stock assessments with ... that were used to set the precautionary yields for each fishery in 2009. The change in the biomass ... estimated by the models arising from withholding data was found to be highest in the earlier years of stock ... years, the change in estimated biomass arising from withholding data was much smaller, with values ...
Meeting Document : WG-SAM-11/17 : Автор(ы): S. Mormede (New Zealand)
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Informing the Working Group on Fish Stock Assessment about the revisions of the WSMPA proposal
proposal, which would fall under the remit of, or might be of interest to participants at FSA 2018 ... reference areas could be used for comparative studies into the potential impacts of D. mawsoni fishing ... , H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA project team Title: Informing the ...
Meeting Document : WG-FSA-18/08 Rev. 1 : Автор(ы): S. Hain, K. Teschke, H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA project team
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Analysis of scientific observer data from the Saga Sea 2006–2007
distribution of these trawls in time and space was not random. The vessel tended to fish with one trawl type ... . There did not appear to be a consistent difference between the size of krill caught by conventional and ... comprehensive to allow a robust analysis of larval fish bycatch data. However, the results to date suggest that ...
Meeting Document : WG-EMM-07/16 : Автор(ы): P. Orr, J. Hooper, D. Agnew, J. Roe, G. Doherty and A. Pryor
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Results of the scientific research survey in CCAMLR Subarea 88.3 in the 2004/05 season
approved at CCAMLR XXIII, research activities were completed with 10 research hauls, temperature profiling ... survey are limited, they do suggest that further research activity is required in Subarea 88.3 before any ... fishing activity be permitted. Author(s): G. Patchell (New Zealand) Title: Results of the scientific ...
Meeting Document : WG-FSA-05/53 : Автор(ы): G. Patchell (New Zealand)
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ASOC evaluation of the CDS
is concerned that the CDS lacks a verification procedure, explicit actions to be taken upon discovery ... Secretariat, and an enforcement protocol to monitor compliance with CCAMLR’s Conservation Measures. CCAMLR ...
Meeting Document : CCAMLR-XX/BG/20 : Автор(ы): Submitted by ASOC
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