Search results
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Hydrographic conditions around Elephant Island during austral spring 1994
Abstract: Based on a data set sampled during November/December 1994 in the Elephant Island ... Plateau Region by RV POLARSTERN, a water mass analysis is performed which reveals the approximate location ... of the Weddell-Scotia Confluence. Vertical distribution of oceanographic parameters temperature ... outline the genera! flow as given by the geostrophic part of the circulation. Compared to American field ...
Meeting Document : WG-EMM-95/16 : Author(s): Stein, M.
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Australian research on Antarctic bird and seal diets
Abstract: Many data on the diets of important vertebrate predator species in Prydz Bay and around ... the sub-Antarctic Heard and Macquarie Islands have been collected during the last seven years ... Bay, on which is centered the CCAMLR Ecosystem Monitoring Programme's priority study area ... , Euphausia superba forms a rather low proportion of the diet of most vertebrate predators. Euphausia ...
Meeting Document : SC-CAMLR-VII/BG/32 : Author(s): Delegation of Australia
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A conceptual model of Japanese krill fishery
Abstract: The behaviour patterns of Japanese krill fishery vessels in Area 48 were analysed using ... questionnaires on the reasons why the vessel changed their fishing grounds, which were sent out to of the ... Japanese fishing vessel since the 1989/90 fishing season. Among many reasons for changing fishing grounds ... , krill density, krill, size, ice condition, transshipment, and salp-by catch accounted for 95.6% of the ...
Meeting Document : WG-EMM-05/30 : Author(s): S. Kawaguchi, S. Nicol (Australia), K. Taki and M. Naganobu (Japan)
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Summary of monitoring and research activities at Svarthamaren, Dronning Maud Land
Svarthamaren, Dronning Maud Land from five field seasons between 1991/92 and 1996/97 is presented. The results ... of the population monitoring show that the number of pairs with chick or egg varied between 55,387 ... -178,240 (mean 119,000). Assuming that about 10 % of the colony is situated in inaccessible parts outside ... the area covered by the monitoring system the mean number of pairs producing a chick each year is ...
Meeting Document : WG-EMM-97/78 : Author(s): Lorentsen, S., Tveraa, T., Røv, N.
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Entanglement of Antarctic fur seals in man-made debris at Bird Island, South Georgia
Abstract: The incidence of entanglement of Antarctic fur seals (Arctocephalus gazella) in Man ... -made debris at Bird Island, South Georgia, was monitored throughout the austral winter and summer of ... 1991 as part of an on-going study by the British Antarctic Survey. Only seven seals were observed ... entangled during the winter months (April- October) while 48 were sighted during the pup-rearing period ...
Meeting Document : SC-CAMLR-XI/BG/09 : Author(s): Delegation of United Kingdom
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Development of an algorithm designed to assess observer data quality and performance
Abstract: As part of the Secretariat task to ensure the quality and consistency of the data ... arising from the CCAMLR SISO, an algorithm was designed to automatically import and check data entered by ... observers in their logbooks. A first version of the algorithm was tested on four randomly selected longline ... fishery logbooks. In its current version the algorithm is able to detect and report invalid data formats ...
Meeting Document : WG-SAM-13/40 : Author(s): Secretariat
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Preliminary tag-recapture based population assessment of Antarctic toothfish in Subarea 48.4
Abstract: The stock of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 is estimated from ... tagging returns to be 982 tonnes in 2018. Applying the CCAMLR agreed precautionary assumption of average ... biomass across the time series and harvest rate of γ = 0.038, implies a 2018/19 yield of 37 tonnes ... , unchanged from the 2017/18 catch limit. Historically, a precautionary approach has been applied in treating ...
Meeting Document : WG-FSA-18/26 : Author(s): T. Earl and A. Riley
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Detection of predator dive patterns from stationary echosounder data
Abstract: Standard protocols for processing of echosounder data are geared towards the estimation ... of biomass indices of pelagic organisms. More transient visitors to the watercolumn however also give ... echoes, and the data provided by the echosounders may be used to assess the behaviour of these organisms ... , as well as their interactions with the pelagic residents. Using freely available software and neural ...
Meeting Document : WG-EMM-2019/34 : Author(s): T. Klevjer and G. Skaret
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Identification and speciation of Antarctic skates
(COI) were sequenced in 9 species of Bathyraja skates from the Southern Oceans and New Zealand. Based ... on significant sequence divergence, the species that has been referred to as Bathyraja eatonii from ... the Antarctic shelf and slope is a species distinct from B. eatonii from the Kerguelen Plateau (the ... Bathyraja n. sp. cf eatonii. There was no sequence divergence among samples of B. n. sp. “dwarf” from the ...
Meeting Document : WG-FSA-07/27 : Author(s): P.J. Smith, C.D. Roberts, A.L. Stewart, M. McVeagh and C.D. Struthers (New Zealand)
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Foraging areas of black-browed and grey-headed albatrosses breeding on Macquarie Island in relation to marine protected areas
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 ... black-browed albatrosses Thalassarche melanophrys was contained within MPAs, principally the Economic ...
Meeting Document : WG-FSA-04/49 : Author(s): A. Terauds, R. Gales, G.B. Baker and R. Alderman (Australia)