Search results
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An outline of narrowband echosounder survey methods to estimate biomass of Antarctic krill in CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
CCAMLR standard will be employed in the analysis but utility of 70 kHz data will also be investigated ... to estimate biomass of Antarctic krill in CCAMLR Division 58.4.1 during 2018/19 season by the ... will be conducted in CCAMLR Division 58.4.1 during 2018/19. The biomass estimation will be conducted ... in 2000 as the CCAMLR-2000 survey. Quantitative echosounders has evolved since then and a current ...
Meeting Document : SG-ASAM-18/02 : Author(s): K. Abe, K. Amakasu, R. Matsukura, T. Mukai and H. Murase
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Flexible foraging strategies of gentoo penguins help buffer the impacts of inter-annual changes in prey availability
. We examined inter-annual changes in the foraging strategies and diet of gentoo penguins in the South ... , and fish the secondary, though the importance of these items varied among years. Diving behavior also ... flexibility may contribute to why gentoo penguin populations have remained stable in the region, while their ... (USA) Title: Flexible foraging strategies of gentoo penguins help buffer the impacts of inter-annual ...
Meeting Document : WG-EMM-08/50 : Author(s): A.K. Miller and W.Z. Trivelpiece (USA)
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FURTHERING IMPLEMENTATION OF NETWORKS OF MPAS IN ANTARCTICA AND THE SOUTHERN OCEAN
Abstract: In this paper ASOC makes the case for CCAMLR to move swiftly to begin the process of ... reserves in the Southern Ocean. Recent progress on the global agenda to implement of marine protected areas ... IMPLEMENTATION OF NETWORKS OF MPAS IN ANTARCTICA AND THE SOUTHERN OCEAN Approval: Approved Secretariat Workflow ... being the key criteria. The outcomes of the 2007 CCAMLR Bioregionalisation Workshop provide sufficient ...
Meeting Document : CCAMLR-XXVII/BG/26 : Author(s): Submitted by ASOC
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Analysis of dietary overlap in Antarctic fish (Notothenioidei) from the South Shetland Islands: no evidence of food competition
fish assemblages at the South Shetland Island area. Using tyler’s (1972) method, the reoccurrence of ... main and secondary prey among fish predators was 33% in summer and 37% over the year at Potter Cove; 25 ... . Likewise, using the “S” index of Linton et al. (1981) the diet similarity between most species pairs is ... Author(s): E. Barrera-Oro (Argentina) Title: Analysis of dietary overlap in Antarctic fish ...
Meeting Document : WG-FSA-03/13 : Author(s): E. Barrera-Oro (Argentina)
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Shipboard line transect surveys of crabeater seal abundance in the pack-ice off East Antarctica: evaluation of assumptions
in the pack-ice off East Antarctica: evaluation of assumptions Approval: Approved ... Abstract: The extent to which the assumptions underlying line transect sampling are satisfied in ... shipboard surveys of crabeater seals hauled-out on the Antarctic pack-ice is examined. Crabeater seals ... showed little movement in response to the approaching ship. Movement away from the ship by seals close to ...
Meeting Document : WG-EMM-04/64 : Author(s): C. Southwell, W. de la Mare (Australia), D. Borchers and L. Burt (United Kingdom)
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An unmanned aerial vehicle as a platform for aerial photography of land-based predator populations in Antarctica: specifications and suitability of the Aerosonde Mark III
Abstract: WG-EMM is currently investigating the feasibility of undertaking broad-scale surveys of ... large and remote regions. We describe some specifications and assess the advantages and disadvantages of ... one such UAV, the ‘Aerosonde’, which is manufactured by Aerosonde™ in Melbourne, Australia. The ... cost, the need for a launching and landing runway, difficulty in operating around mountainous terrain ...
Meeting Document : WG-EMM-03/50 : Author(s): L. Irvine and C. Southwell (Australia)
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Developments towards an investigation of potential bias from the analysis of tag–release and recapture data in Ross Sea Antarctic toothfish abundance estimates
potential bias from the analysis of tag–release and recapture data in Ross Sea Antarctic toothfish abundance ... the current tagrecapture programme for Antarctic toothfish in the Ross Sea. We present an initial ... et al. (2005c), but ignores movements of tagged and untagged fish. The results suggest that as the ... spatial pattern of tag releases and recovery effort has changed over the years that the tagging programme ...
Meeting Document : WG-FSA-SAM-06/10 : Author(s): A. Dunn (New Zealand)
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Distribution of phytoplankton in the mixed layer: implication of krill abundance
Abstract: The vertical trajectory of phytoplankton in the Antarctic ocean is modelled as a random ... phytoplankton in the upper ocean. Author(s): United States of America Title: Distribution of phytoplankton in ... mixing layer is shallow, but diffusion is large enough to effect the vertical distribution of ... the mixed layer: implication of krill abundance Approval: Approved ...
Meeting Document : SC-CAMLR-VII/BG/26 : Author(s): United States of America
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A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica
lengths of the sampled Antarctic silverfish ranged from 4.6 cm to 22.9 cm. Pronounced modes in the length ... : A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the ... correlated (r2 = 0.99). Counts of growth zones in 304 thin-sectioned otoliths were used to estimate ages and ... separately. Female Antarctic silverfish appear to reach a larger size than males, but none of the estimated ...
Meeting Document : WG-FSA-10/20 : Author(s): C.P. Sutton and P.L. Horn (New Zealand)
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Updated and revised stock assessments of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Kerguelen Islands (Division 58.5.1) and Crozet Islands (Subarea 58.6)
the actual level of catches (5100t in Kerguelen and 700t in Crozet). Author(s): S. Romain and G ... eleginoides) in the vicinity of Kerguelen Islands (Division 58.5.1) and Crozet Islands (Subarea 58.6) Approval ... Abstract: An updated and revised assessment of the Patagonian toothfish (Dissostichus eleginoides ... results show stable estimates of biomass and SSB never fall below 60% of the initial biomass considering ...
Meeting Document : WG-FSA-14/36 Rev. 1 : Author(s): S. Romain and G. Duhamel (France)