Search results
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Foraging areas of black-browed and grey-headed albatrosses breeding on Macquarie Island in relation to marine protected areas
-order predators, there is a paucity of data that can be used to evaluate their efficacy in achieving ... this purpose. 2. We assessed the effectiveness of a network of MPAs around Macquarie Island in the ... Southern Ocean by examining the foraging areas of black-browed and grey-headed albatrosses that were ... breeding on the Island. 3. During late incubation and brood periods over 90% of time spent foraging by ...
Meeting Document : WG-FSA-04/49 : Author(s): A. Terauds, R. Gales, G.B. Baker and R. Alderman (Australia)
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Comparative studies on the biological and acoustical properties of krill aggregations (Euphausia superba Dana) samples during the XIII Italian Expedition to the Ross Sea (December 1997–January 1998)
(December-January 1997-98), for biological validation of hydroacoustic recordings, 35 net samplings were ... carried out. For all hauls both parameters: biological (length AT, sex and maturity stage of the gonads of ... the Euphausia superba) and acoustical (differences in volume back-scattering strength of krill ... aggregations MVBS at 38, 120 and 200 kHz) were examinated. Comparing the depth of the net and acoustic ...
Meeting Document : WG-EMM-00/39 : Author(s): M. Azzali, J. Kalinoswki, G. Lanciani and I. Leonori (Italy)
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Dynamics of Notothenia rossii rossii size-age structure on the Kerguelen Islands shelf
Abstract: Basing on materials of research expeditions and fishing cruises to the Kerguelen ... Islands shelf in the period from 1970 to 1991, dynamics of size- age structure of marbled rockcod ... used to characterise the age composition. It was determined that in the initial years of exploitation ... of the stock, the major part of catches (more than 80%) was formed by repeated spawning fish. then as ...
Meeting Document : WG-FSA-94/04 : Author(s): P.B. Tankevich (Ukraine)
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Acoustic discrimination of southern ocean zooplankton
Abstract: Acoustic surveys in the vicinity of the sub-Antarctic island of South Georgia revealed ... the existence of a number of horizontally extensive yet vertically discrete scattering layers in the ... upper 250 m of the water column. These layers were fished with a LonghurstHardy plankton recorder (LHPR ... ) and a multiple-opening 8 m2 rectangular mid-water trawl (RMT8). Analysis of catches suggested that ...
Meeting Document : WG-EMM-97/54 : Author(s): Watkins, J.L., Brierley, A.S., Goss, C., Ward, P.
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A new bathymetric compilation for the South Orkney Islands, Antarctic Peninsula (49°–39°W to 64°–59°S): insights into the glacial development of the continental shelf
Abstract: We present a new, high resolution (300 m) bathymetric grid of the South Orkney Islands ... and surrounding continental shelf, northeast of the Antarctic Peninsula. The new grid, derived from a ... compilation of marine echo-sounding data improves previous regional bathymetric representations and helps to ... visualise the morphology of the shelf in unrivalled detail. The compilation forms important baseline ...
Meeting Document : WG-EMM-14/P01 : Author(s): W.A. Dickens, A.G.C. Graham, J.A. Smith, J.A. Dowdeswell, R.D. Larter, C.-D. Hillenbrand, P.N. Trathan, J.E. Arndt and G. Kuhn
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Development of a five-year work plan for the CCAMLR Scientific Committee
, paragraphs 13.8 to 13.20). It was agreed that the work should be led by the Chair of the Scientific Committee ... with input from the conveners of its working groups and that it should be made available for ... the first stage in the development of the five-year work plan and draws on recommendations arising ... plan has used the template of the five-year work plan of the ATCM CEP and considers a range of work ...
Meeting Document : WG-EMM-17/02 : Author(s): M. Belchier (Chair of SC-CAMLR)
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Spatio–temporal dynamics in maturation and spawning of Patagonian toothfish Dissostichus eleginoides on the subantarctic Kerguelen Plateau
Abstract: This study investigated maturation and spawning of Patagonian toothfish Dissostichus ... Sector of the Southern Ocean based on gonads and otoliths collected between years 2004–2015, and using ... histological analyses and calibration of macroscopic staging criteria. Dissostichus eleginoides at HIMI spawn ... throughout the late autumn and winter months of May–August, and spawning activity is concentrated on slopes ...
Meeting Document : WG-FSA-17/P04 : Author(s): P. Yates, P. Ziegler, D. Welsford, J. McIvor, B. Farmer and E.Woodcock
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Overview of global trade in toothfish (Dissostichus spp.)
GLOBEFISH unit, an analysis was conducted for the five-year period of 2012–2016 on the global trends of the ... . Captures the global trade of toothfish. The analysis showed that over this five-year period quantity of ... imports globally have seen an increase of 16.08% and exports have seen an increase in 15.54%. The average ... global unit value price of toothfish products has also shown an increase with imports increasing by 19.68 ...
Meeting Document : CCAMLR-XXXVI/BG/05 Rev. 1 : Author(s): CCAMLR Secretariat
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INVESTIGATING LENGTH AT MATURITY OF ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) BASED ON SCIENTIFIC OBSERVERS’ DATA
Abstract: Through generalised linear models, the gonadosomatic index of Antarctic toothfish in ... the Ross Sea region was shown to vary with latitude, length and month. Limitations of the scientific ... observers’ staging data were highlighted and GSI is recommended as a better indicator of maturity status in ... Antarctic toothfish. Reports of histological analyses of a small number of Antarctic toothfish showed ...
Meeting Document : WG-FSA-08/48 : Author(s): S. Mormede, S. Parker and P. Grimes (New Zealand)
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Contribution to the early life history of Channichthyidae from the Bransfield Strait and South Georgia
Abstract: Age and early growth of 5 species of Channichthyidae / Champsocephalus gunnari ... during FIBEX /February-April 1981/ and SIBEX /December-January 1983/84/. Additional material- larvae of ... to March 1980 /Fig. 1/. Length frequency distributions of the above-named species were usually ... patterns of microincrements, discernible in these otoliths under a light microscope, in most cases are ...
Meeting Document : CCAMLR/86/FA/08 : Author(s): W. Ślósarczyk (Poland)