Search results
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RECENT TRENDS IN NUMBERS OF FOUR SPECIES OF PENGUINS AT THE PRINCE EDWARD ISLANDS
pairs of king penguins were incubating eggs at Marion Island, the larger of the two islands in the group ... , and 2000 pairs at Prince Edward Island. At Marion Island from 1987–2008, there was no long-term trend ... in numbers of king penguin chicks that survived to the end of the winter period, but there was ... considerable fluctuation in chick production in the 1990s. It was roughly estimated that on average 88% of king ...
Meeting Document : WG-EMM-10/P1 : Author(s): R.J.M. Crawford, P.A. Whittington, L. Upfold, P.G. Ryan, S.L. Petersen, B.M. Dyer and J. Cooper
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Recent trends in numbers of four species of penguins at the Prince Edward Islands
pairs of king penguins were incubating eggs at Marion Island, the larger of the two islands in the group ... , and 2000 pairs at Prince Edward Island. At Marion Island from 1987–2008, there was no long-term trend ... in numbers of king penguin chicks that survived to the end of the winter period, but there was ... considerable fluctuation in chick production in the 1990s. It was roughly estimated that on average 88% of king ...
Meeting Document : WG-EMM-10/P01 : Author(s): R.J.M. Crawford, P.A. Whittington, L. Upfold, P.G. Ryan, S.L. Petersen, B.M. Dyer and J. Cooper
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Major fishery events in Kerguelen Islands: Notothenia rossii, Champsocephalus gunnari, Dissostichus eleginoides – current distribution and status of stocks
Abstract: The large-scale trawl exploitation targeting virgin stocks of marbled notothenia ... (Notothenia rossii) off the Kerguelen Islands occurred after the discovery by the Soviet Union scouting ... fishing fleet of the fishing grounds in the early 1970’s. The fishery shifted to icefish (Champsocephalus ... gunnari) and grey notothen (Lepidonotothen squamifrons) when overexploitation on the shelf and surrounding ...
Meeting Document : WS-MPA-11/P04 : Author(s): G. Duhamel, P, Pruvost, M. Bertignac, N. Gasco and M. Hautecoeur
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Warp strike observations
by an estimated factor of 6, compared with no offal discharge • The strike-rate for large-birds ... fisheries observers. The survey was carried out in the southern squid trawl fishery (SQU6T/1T) over the ... summer of 2004 – 2005. The aim of the work was to test a new protocol for quantifying warp-strikes and to ... assess the factors (fishery, environmental, and behavioural, temporal) that appeared to influence the ...
Meeting Document : WG-FSA-05/40 : Author(s): E. Abraham (New Zealand)
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Changes to seabird avoidance regulations in Alaska demersal longline fisheries based on scientific research on effectiveness of mitigation measures
Abstract: The North Pacific Fishery Management Council (Council) recommended changes to the ... existing regulations for seabird avoidance measures required in the groundfish and halibut demersal ... longline fisheries off Alaska. One of the main recommendations is for the required use of paired streamer ... lines on larger vessels. Changes were based on research results from a two-year study conducted by the ...
Meeting Document : WG-FSA-02/53 : Author(s): K.S. Rivera (USA)
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Semi-automated software to count and validate Adélie penguin colonies from aerial photographs
Adélie penguins, there is no reason why the present approach could not be used for census counts of other ... of nesting Adélie penguins (Pygoscelis adeliae), on aerial photographs of the Ross Sea sector of ... Antarctica. The software is written in MATLAB ®, is freely available and is deployed to users as a graphical ... , which is slow, and highly-dependent on the skill of the operator. The basis of the semi-automated ...
Meeting Document : WG-EMM-14/54 : Author(s): S.J. McNeill, K.J. Barton and P.O’B. Lyver (New Zealand)
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An exact time of release and recapture stock assessment model applied to Macquarie Island Patagonian toothfish (Dissostichus eleginoides)
length. It assumes a maximum age or length above which a fish is no longer available to the gear. Each ... Abstract: This paper presents an assessment of the harvested population of Patagonian toothfish ... at Macquarie Island based on data from a tag-recapture experiment initiated during the 1995/96 ... , catches, recaptures, natural mortality, and annual net recruitment are used to assess the population of ...
Meeting Document : WG-FSA-00/43 : Author(s): G. Tuck, W. de la Mare, W. Hearn, R. Williams, A. Smith, X. He and A. Constable (Australia)
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GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH
Abstract: In April 2008 the UK undertook a bottom trawl survey of CCAMLR Sub-Area 48.3 on the FV ... Sil, with 70 bottom trawls undertaken giving good geographic coverage. Using 10 strata and the updated ... sea-floor areas and adjusting this for the low headline height of the UK trawl (see CCAMLR WG-FSA ... (2003), the biomass of mackerel icefish was estimated to be 80,426 tonnes, with a lower 1-sided 95% CI ...
Meeting Document : WG-FSA-08/28 : Author(s): 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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Chiller killers – first steps towards identifying krill pathogens
importance as components of the global food chain, and krill are no exception to this with very few studies ... Abstract: Antarctic Krill (Euphausia superba) is a ‘keystone species’ in the Southern Ocean ... providing the main source of food for many taxa high in the food chain such as baleen whales, penguins and ... remains a deficit area with little to nothing known about infection dynamics. Over the past century the ...
Meeting Document : WG-EMM-15/23 : Author(s): K. Bateman, R. Hicks, G. Tarling, M. Soeffker and G. Stentiford (United Kingdom)
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Antarctic icefishes (Channichthyidae) – a unique family of fishes – a review
Abstract: Icefish are a family of species unique among vertebrates in that they possess no ... haemoglobin. With the exception of one species, icefish live only in the cold – stable and oxygen – rich ... environment of the Southern Ocean. It is still questionable how old icefish are in evolutionary terms: they ... may not be older than 6 MA, i.e. they evolved well after the Southern Ocean started to cool down or ...
Meeting Document : WG-FSA-04/10 : Author(s): K.-H. Kock (Germany)