Résultats de la recherche
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Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
Paper Title: Effect of line sink rate on albatross mortality in the Patagonian toothfish longline ... vessels to derive a sink rate and line-weighting regime that would minimise the capture of albatrosses ... based on knowledge of line sink rates and albatross diving abilities. Sink rates of lines deployed into ... propeller turbulence, which tended to keep lines aloft, varied as a function of distance between line ... the end of the snoods on the mother line from the anchors. The anchors were attached to 18 mm ropes ... line and were suspended along the entire length of the mother line to within 600 m of anchors and to ... within 70 m of weights attached to the mother line at 1 600 m intervals. Branch lines were 18 m in ... . Each batch of 20 baskets was followed by 140 m of mother line with no branch lines attached; a 15-20 ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Auteur(s): Robertson, G.G
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Zooplankton: Trophic modelling of the Ross Sea
. Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... content of E. crystallorophias from May 1961 – January 1962. Lipids made up to 36% of body dry weight ... ) and later summarised in Azzali et al. (2006) did not extend east of 175°30’W so that concentrations ... of E. crystallorophias over the Ross Sea shelf to the east of the area were not measured. To ... abundance of E. crystallorophias and E. superba in the Ross Sea in 1982, and values east of 176° appear ...
Document : Site Section: Publications
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Distribution characteristics of krill aggregations in the fishing ground off Coronation Island in the 1989/90 season
Paper Title: Distribution characteristics of krill aggregations in the fishing ground off ... Coronation Island in the 1989/90 season Abstract / Description: Distributional characteristics of krill ... biological condition of krill and the performance of the fishery. Investigations were carried out from ... October 1989 to February 1990. An echo sounder was used to assess the characteristics of krill ... feeding conditions leads to krill being scattered (Latogursky, 1972). Moreover, sexual maturation of ... WG-KRILL-90/20 DISTRIBUTION CHARACTERISTICS OF KRILL ... . Latogursky* * Abstract Distributional characteristics of kriU aggregations in the Coronation Island ... fishing ground were examined in relation to environmental factors, the biological condition of krill and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 49–73 : Auteur(s): Kasatkina, S.M. and V.I. Latogursky
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Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (Subarea 88.1)
Paper Title: Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica ... (Subarea 88.1) Abstract / Description: The diet of Antarctic toothfish (Dissostichus mawsoni) captured by ... stomachs examined respectively). Fish sampled in 2001 were caught at depths of 317 to 2 154 m and ranged ... from 58 to 190 cm in total length (TL). Fish sampled in 2002 were caught at depths of 815 to 1 623 m ... data unavailable) along with that of six other fi sh species in the Cosmonaut Sea (East Antarctica ... rations. J. Ichthyol., 32 (1): 138– 146. Permitin, Yu.Ye. and M.I. Tarverdiyeva. 1972. The food of ... . 10 (2003): 113–123 113 DIET OF THE ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) FROM THE ROSS SEA ... Zealand Email – jmfenaughty@clear.net.nz D.W. Stevens National Institute of Water and Atmospheric ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 113–123 : Auteur(s): Fenaughty, J.M., D.W. Stevens and S.M. Hanchet
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Relative abundance of large whales around South Georgia
mother-calf pair was observed off the Shag Rocks in February 1997. Extirpation of animals from this ... Abstract: To assess large whale stocks following the cessation of land-based South Georgia ... Island (NW of South Georgia) between 1979 and 1998, and mariner sightings between 1992 and 1997. All ... particular feeding ground is the most likely reason for ongoing low numbers of all species. Other factors may ...
Meeting Document : WG-EMM-99/34 : Auteur(s): M.J. Moore (USA), S.D. Berrow (UK), B.A. Jensen (USA), P. Carr (UK), R. Sears (Canada) and V.J. Rowntree, R. Payne and P.K. Hamilton (USA)
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Analysis of results from demersal fish surveys at South Georgia, undertaken by the United Kingdom and the USSR, January and February 1990
Paper Title: Analysis of results from demersal fish surveys at South Georgia, undertaken by the ... discussions and analyses of the data from a survey from MV Hill Cove in January 1990 and RV Akademik Knipovich ... in February 1990 around South Georgia. Both surveys were characterized by large numbers of small ... hauls interspersed with a few large catches. The small number of large catches cause a disproportionate ... region east of 37°. The results from this comparison are set out below. The analyses were made using ... finding the proportion of total swept area covered by the highest density in the middle stratum of ... the density of the haul from station 16, and then by the total seabed area in the middle stratum of ... of previous surveys, the greatest proportion being present in the middle (150 to 250 m) depth 236 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 223–254 : Auteur(s): (Report of a Joint UK/USSR Workshop, 23 to 27 July 1990)
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By-catch of rays in the 2002/03 toothfish fishery around South Georgia
the number of rays that were likely to have died as a result of being caught on longlines using a ... survival and conservation of rays; • It was the first in which very good quality information was available ... from all observers’ tally periods on the catch rates of rays cut off the line; • In 2003 the UK, with ... the cooperation of Chile and one fishing company, undertook an experiment to determine the ...
Meeting Document : WG-FSA-03/58 : Auteur(s): D.J. Agnew, J. Pearce and M. Endicott (United Kingdom)
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MULTIPLE TIME SCALES OF VARIABILITY IN THE KRILL POPULATION AT SOUTH GEORGIA
conducted in the early, middle and late period of the summers of 2001 to 2005, together with krill ... abundance was highest during the middle of the summer in 3 years and in the late period in 2 years; in the ... Abstract: The South Georgia region supports a high biomass of krill that is the subject to high ... inter-annual variability. The lack of a self-sustaining krill population at South Georgia means that ...
Meeting Document : WG-EMM-08/48 : Auteur(s): K. Reid, J. Watkins, E. Murphy, P. Trathan, S. Fielding and P. Enderlein (United Kingdom)
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ANTARCTIC FUR SEAL PUP PRODUCTION AND POPULATION TRENDS IN THE SOUTH SHETLAND ISLANDS WITH SPECIAL REFERENCE TO SOURCES OF ERROR IN PUP PRODUCTION ESTIMATES
seal predation was estimated from the rate of mother-pup failed pairs after pups begin entering the ... Abstract: This paper reports the results of a ground survey of fur seal colonies from in the ... South Shetland Islands in 2007/08. Multiple counts of pups at each colony were conducted to establish ... census in 2001/02 (10,057 ±142 pups born). Dead pups accounted for 1.64% of the total. A comparison with ...
Meeting Document : WG-EMM-PSW-08/14 : Auteur(s): M.E. Goebel (USA), D.E. Torres C. (Chile), A. Miller, J. Santora, D. Costa (USA) and P. Diaz (Chile)
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Improving estimates of Adélie penguin breeding population size: developing factors to adjust one-off population counts for availability bias
Paper Title: Improving estimates of Adélie penguin breeding population size: developing factors ... presented for the collection and development of data to adjust counts of Adélie penguins made at any time in ... the breeding season to an estimate of the breeding population. The development of ‘availability ... adjustment factors’ involves the collection of time-series counts of population objects, such as adults ... of availability adjustment data for Adélie penguins in East Antarctica. Availability curves, such ... laying their eggs around mid- November (Davis, 1988) to undertake a foraging trip of around 17 days ... nest, and nest loss is minimal. Consequently, a count of occupied nests at this point provides the ... ImprovIng estImates of adélIe penguIn breedIng populatIon sIze: developIng factors to adjust one-off ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 229–241 : Auteur(s): Southwell, C., J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery