Résultats de la recherche
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Fisheries risks to the population viability of black petrel (Procellaria parkinsoni)
spend an average of 1.2 y in the colony as pre-breeders, with only 3% skipping the pre-breeder phase. Of ... : periodic repeats of the transect based abundance estimation last done in 2005 (to determine whether the ... population. The mean age of first breeding for black petrel is estimated to be 6.7 y. Before this, new adults ... Abstract: Data on the main population of black petrel (Procellaria parkinsoni), which breeds on ...
Meeting Document : WG-SAM-10/P01 : Auteur(s): R.I.C.C. Francis and E.A. Bell (New Zealand)
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Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method
Abstract: The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... includes the Elephant Island peripheries and the west and south of the South Shetland Island, were ... estimated using an acoustics survey. Acoustic data were collected with 38 and 120 kHz from April 13 to 24 in ... 2016 and 38 and 200 kHz from March 6 to 14 and 38 and 120 kHz on April 27 and May 5 in 2017. Krill were ...
Meeting Document : SG-ASAM-18/08 : Auteur(s): S. Choi, K. Lee and D. An
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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 : Auteur(s): D.J. Agnew, A. Payne, J. Hooper and J. Roe (United Kingdom)
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Opening Statement by the alternate representative of Australia, His Excellency Mr H W Bullock, Australian Ambassador to Argentina
THE J\L TEP.NATE REPPESE:HATIVil OF A~Tl}AL IA. Mr. H. W. BULJ,OCK .1 AUSTRALIM·l AMBASSADOR IN ... will be able to proceed to a resolution of the issues that confront us in establishing a regime ... ~.ntarctic continent. In a sense the , . involvement· of the countries of the Southern Hemisphere in ... ) from that Meeting. In the preamble to that reccmmendation we jointly recognized the urgency of ...
Document : Site Section: The Organisation
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Evaluating the impact of multi-year research catch limits on overfished toothfish populations
Abstract: In stocks that have been depleted by overfishing, the benefits of additional fisheries ... decades to recover even in the absence of fishing, and apparently low levels of research catches can ... significantly delay the recovery of a stock. Research catches in excess of 0.6% of B0 should be avoided to ... ensure that research doesn’t significantly impact on the recovery of depleted stocks in the long term ...
Meeting Document : WG-FSA-10/42 Rev. 1 : Auteur(s): D.C. Welsford (Australia)
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Analysis of trawl data from the South Georgia krill fishery
focussed, operating in a limited area along the shelf edge on the northern coast of the island. Each day a ... large number of trawls were undertaken by each,vessel, with trawls being shorter in duration during the ... the variability are discussed in relation to the biology of krill, others are discussed in relation to ... Abstract: Data from individual trawls carried out by vessels operating in the krill fishery at ...
Meeting Document : WG-EMM-97/41 : Auteur(s): Parkes, G., Trathan, P.N., Everson, I., Murphy, E.J.
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ECOSYSTEM SERVICES OF THE SOUTHERN OCEAN
resources, and the regulation of global climate and sea level. Assessing ecological processes in terms of ... the Southern Ocean ecosystem is generally under-represented in assessments of ecosystem services at ... , status and value. The benefits of assessing Southern Ocean ecosystem services in this way include (i ... Abstract: The Southern Ocean is a globally important marine region, providing a range of ...
Meeting Document : WG-EMM-11/21 : Auteur(s): S.M. Grant, S.L. Hill and P.N. Trathan (UK)
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Testing for genetic differentiation between two size classes of the starry skate (Amblyraja georgiana)
size classes collected by Scientific Observers in the Ross Sea. We determined the DNA sequences of five ... among the samples of A. georgiana that were collected in the Ross Sea region, and the data did not ... Abstract: Two size classes of A. georgiana have been described in by-catch fishing data reported ... in the catch data from the Ross Sea fisheries. We extracted DNA from A. georgiana samples from both ...
Meeting Document : WG-FSA-12/53 : Auteur(s): P. Ritchie and A. Fleming (New Zealand)
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The effects of monitoring procedures on Adélie penguins
Paper Title: The effects of monitoring procedures on Adélie penguins Abstract / Description: The ... effects of flipper bands, implanted tags, gastric lavage and external instrument attachment on the ... , Antarctica. The return rates of birds carrying bands and/or implanted electronic transponders were compared ... to investigate the contribution of bands to bird mortality and to determine rates of band and tag ... winter. The attachment of satellite tracking devices during the incubation period resulted in increased ... Adklie penguins (Pygoscelis ndeliae) in order to determine the range of natural variation present in ... backs of penguins causes a significant increase in the drag of swimming birds which, in turn ... 'E) in Eastern Antarctica through the development of an automated weighing and identification ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Auteur(s): Clarke, J. and K. Kerry
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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
Paper Title: Estimating the impact of depredation by killer whales and sperm whales on longline ... data collected on longliners between 2003 and 2009 were analysed to look at the levels of depredation ... 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 line of a large number of ... the start of the season with the sightings becoming fewer towards the end of the season in August ... sperm whales were seen but significantly lower in the presence of killer whales, suggesting that sperm ... information from both fishers and scientific observers suggest an increase in the numbers of cetaceans and ... in the overall levels of depredation which will affect both the fishing industry and fishery ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Auteur(s): Moir Clark, J. and D.J. Agnew