Search results
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A TALE OF TWO ISLANDS: CONTRASTING FORTUNES FOR SUBANTARCTIC SKUAS AT THE PRINCE EDWARD ISLANDS
in 2008, whereas the number of skua nests on Marion Island was barely half that counted in 2001 ... removal of cats from Marion Island in the early 1990s has benefited the major native predator of burrowing ... -Antarctic islands, and can be used to monitor the health of burrowing petrel populations. A survey of skuas ... at the Prince Edward Islands was conducted during December 2008, repeating a previous survey in ...
Meeting Document : WG-EMM-10/P3 : Author(s): P.G. Ryan, P.A. Whittington and R.J.M. Crawford
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AN UPDATED DESCRIPTION AND PARAMETERISATION OF THE SPATIAL MULTI-SPECIES OPERATING MODEL (SMOM )
management units (SSMUs) in the Scotia Sea, to reduce the potential impact of fishing on land-based predators ... combinations of model parameters essentially try to bound the uncertainty in, for example, the choice of ... 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-08/17 : Author(s): É.E. Plagányi and D.S. Butterworth (South Africa)
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Climate Change, Longevity Overfishing and Precautious Management of the Area 88 Toothfish Fishery
of this species to climate-related factors; and 3) an increase in that sensitivity owing to the ... Abstract: Three aspects of current management of the “exploratory” Antarctic toothfish ... (Dissostichus mawsoni) fishery in Area 88 indicates that less-than-full precaution is being exercised in the ... targeted removal of the oldest, most successful and most fecund toothfish. The current strategy is to ...
Meeting Document : WG-FSA-09/07 : Author(s): D. Ainley (USA), M. Massaro, G. Ballard (New Zealand) and J.T. Eastman (USA)
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Water mass distribution and circulation west of the Antarctic peninsula and including Bransfield Strait
this water mass floods the continental shelf west of the Antarctic Peninsula. CDW is also found in ... Islands. Mixing of CDW results in reduction of the oxygen content of the overlying Antarctic Surface Water ... Abstract: Historical hydrographic data from Bransfield Strait and the region west of the ... 34.6 to 34.73 and oxygen values below 4.5 ml 1-1, is the most prominent water mass in this region, is ...
Meeting Document : WG-EMM-95/67 : Author(s): Smith, D.A., Lascara, C.M., Klinck, J.M., Hofmann, E.E.
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Outline for year 3 of the 3-year longline survey to determine toothfish population connectivity between Subareas 48.2 and 48.4
third and final year of an agreed 3-year longline survey, in the wider context of connecting the ... recently undertaken surveys in Subarea 48.2 with the established fishery in Subarea 48.4. The overall ... understanding of Dissostichus spp population structures in this region, and improving available data on ... bathymetry and associated distributions of benthic bycatch species. This paper reiterates the key points of ...
Meeting Document : WG-FSA-18/31 : Author(s): G. Robson, P. Hollyman and C. Darby
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Distribution of salps near the South Shetland Islands during austral summer, 1990/1991 with special reference to krill distribution
potential reasons for the relatively low abundance of E. superba at the stations where salps were present in ... 556 mgC•m-3 and was greatest at a station in the Bransfield Strait in late December 1990. Salp biomass ... found, and the former was dominant numerically. Spatial distribution and generation composition of these ... so the January-February period. While E. superba was found mainly in the coastal area which showed ...
Meeting Document : WG-EMM-95/54 : Author(s): Terazaki, M., Ichii, T., Kawaguchi, K., Nishikawa, J., Ishii, H., Naganobu, M.
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A tale of two islands: contrasting fortunes for sub-Antarctic skuas at the Prince Edward Islands
coverage in 2008, whereas the number of skua nests on Marion Island was barely half that counted in 2001 ... removal of cats from Marion Island in the early 1990s has benefited the major native predator of burrowing ... -Antarctic islands, and can be used to monitor the health of burrowing petrel populations. A survey of skuas ... at the Prince Edward Islands was conducted during December 2008, repeating a previous survey in ...
Meeting Document : WG-EMM-10/P03 : Author(s): P.G. Ryan, P.A. Whittington and R.J.M. Crawford
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
becoming fewer towards the end of the season in August. Killer whale interactions appear to be more ... the levels of depredation caused by killer whales (Orcinus orca) and sperm whales (Physeter ... , with killer whales present on 3.8% and sperm whales on 17.7% of lines. Killer whales appear in pod ... sizes normally of 4 to 10 animals, and often appear to actively seek out fishing vessels and ‘strip’ the ...
Meeting Document : WG-FSA-10/P06 : Author(s): J. Moir Clark and D.J. Agnew
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The population of Mirounga leonina at stranger point (25 de Mayo – King George I.)
Abstract: This paper includes information on the trend of the elephant seal population at ... Stranger Point (25 de Mayo-King george I.) between 1980-87(excluding 1981). A decline in the population was ... observed in 1980-82 and 1987. The female component was mainly affected in 1 980-82 (r=-0.568) while the ... male component was affected in 1987 (r=-0.463). A possible influence of El Niño Southern Oscillation ...
Meeting Document : SC-CAMLR-VII/BG/33 : Author(s): Delegation of Argentina
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Analysis of krill catch data from continuous and conventional trawls by the Saga Sea and Atlantic Navigator
Abstract: In this paper we analyse data on the distribution of catches, the size of krill and ... bycatch of larval fish taken by the Saga Sea fishing with continuous trawls in 2006, and the Atlantic ... Navigator which fished in 2005 using both continuous trawling and conventional trawling. The sizes of krill ... are few data for comparison, the bycatches of larval/juvenile fish in the continuous trawl also appear ...
Meeting Document : WG-FSA-06/57 : Author(s): D.J. Agnew, A. Payne, J. Hooper and J. Roe (United Kingdom)