Search results
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Spatio-temporal variability in the winter diet of larval and juvenile Antarctic krill, Euphausia superba, in ice-covered waters
Abstract: Antarctic krill Euphausia superba is an ecological key species in the Southern Ocean ... and a major fisheries resource. The winter survival of age class 0 (AC0) krill is susceptible to ... changes in the sea-ice environment due to their association with sea ice and their need to feed during ... limited. We studied the spatio-temporal variability of the diet in 4 cohorts of AC0 krill in the Northern ...
Meeting Document : WG-EMM-18/P18 : Author(s): F.L. Schaafsma, D. Kohlbach, C. David, B.A. Lange, M. Graeve, H. Flores and J.A. van Franeker
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Hatching season and growth of Pleuragramma antarcticum larvae near the Antarctic peninsula in austral summer 1993/94
Abstract: Hatching season and larval growth of Pleuragramma antacticum in the water off Antarctic ... Peninsula were determined by the examination of growth increments in otoliths. The samples were collected by ... (54 inds. out of 77 fish larvae) in ichthyoplankton samples, and occurred mainly in cold water of the ... to 260 μm, and linearly related to body size (L); R =- 43.6 + 5.99 L (r2=0.79). The mean size of ...
Meeting Document : WG-EMM-96/65 : Author(s): Cha, S.S., Lee, T.W., Kim, S.
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Revised estimates of yield for Electrona carlsbergi based on a generalised version of the CCAMLR krill yield model
widely varying recruitment patterns, overestimation of the abundance of the stock and age of the most ... recent survey. These problems are addressed in this paper by using stock projections to assess the ... probabilities of the stock of Electrona carlsbergi becoming depleted over a 20 year period. These projections ... have been undertaken using a generalised version of the CCAMLR Krill Yield Model. This is appropriate ...
Meeting Document : WG-FSA-94/21 : Author(s): A.J. Constable and W.K. de la Mare (Australia)
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Temporal variability in Antarctic marine ecosystems: periodic fluctuations in the phocid seals
aspect of their biology: the age structure of crabeater seals (Lobodon carcinophagus) around the ... and with the Southern Oscillation Index (SOI). All of the seal data sets showed evidence of cyclical ... behavior when demodulated at a period of 5 yr. The Weddell seals were generally in phase with the SOI since ... the Weddell series began in 1970. The leopard seals and SOI were in phase in the 1960’s, but ...
Meeting Document : WG-CEMP-91/13 : Author(s): J.W. Testa, G. Oehlert, D.G. Ainley, J.L. Bengtson, D.B. Siniff, R.M. Laws and D. Rounsevell (USA)
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CCAMLR Science – Options for the future
Abstract: CCAMLR Science was launched over 20 years ago with the aim of providing mechanism to ... publicise the science done in CCAMLR and to raise the profile of CCAMLR within the international scientific ... community. A reduction in the number of papers submitted to, and published in the journal, has prompted a ... review of options for the future of CCAMLR Science. In particular, it may be timely to review the role ...
Meeting Document : SC-CAMLR-XXXIV/07 : Author(s): CCAMLR Secretariat
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Using mark-recapture and catch-age data to estimate fishing and natural mortality for the Patagonian toothfish at South Georgia
natural mortality, and integrates catch-at-age data into the estimation model, to aid in distinguishing ... between natural and fishing mortality. The model essentially follows tagged cohorts, with the estimated ... parameters being the fishing and natural mortality vectors for that particular cohort. The model was tested ... analysed with the model. The ages covered by the analysed cohorts ranged from 5 to 13. In the model runs ...
Meeting Document : WG-FSA-SAM-06/06 : Author(s): R.M. Hillary and D.J. Agnew (United Kingdom)
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Practical options for developing feedback management for the krill fishery in Subarea 48.2
might facilitate the development of feedback management procedures for the krill fishery in Area 48. In ... reviewing the state of ecological knowledge for Subarea 48.2, we conclude that movement towards Stage 2 (in ... the Staged approach advocated by WG-EMM) is highly improbable based on the current level of ... information available for Subarea 48.2. We suggest that there is an urgent need to improve the ecological ...
Meeting Document : WG-EMM-14/04 : Author(s): P. Trathan (United Kingdom), M. Santos (Argentina) and O.R. Godø (Norway)
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Assessment of stone crab (Lithodidae) density on the South Georgia slope using baited video cameras
of 719-1518 m around the sub-Antarctic island of South Georgia. Four species of lithodid (Anomura ... to the baits of which Paralomis formosa was the most abundant. Using arrival rate at baits ... , predictions of odour plume size and observations of walking speed the abundance of the stone crab Paralomis ... observed in the 4.9 m2 field of view exceeding 50 within 200 minutes on three occasions. Current speed was ...
Meeting Document : WG-FSA-03/77 : Author(s): M.A. Collins, C. Yau, F. Guillfoyle, P. Bagley, I. Everson, I.G. Priede and D. Agnew (United Kingdom)
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Assessment of stone crab (Lithodidae) density on the South Georgia slope using baited video cameras
of 719-1518 m around the sub-Antarctic island of South Georgia. Four species of lithodid (Anomura ... to the baits of which Paralomis formosa was the most abundant. Using arrival rate at baits ... , predictions of odour plume size and observations of walking speed the abundance of the stone crab Paralomis ... observed in the 4.9 m2 field of view exceeding 50 within 200 minutes on three occasions. Current speed was ...
Meeting Document : WG-FSA-03/77 Text : Author(s): M.A. Collins, C. Yau, F. Guillfoyle, P. Bagley, I. Everson, I.G. Priede and D. Agnew (United Kingdom)
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THE ISSUE OF NON-COMPLIANCE WITH CCAMLR TAGGING PROGRAM
Exploratory Fisheries), the flag States of fishing vessels participating in exploratory fisheries are ... responsible for ensuring the tagging of Dissostichus spp., tag recovery and correct reporting. At CCAMLR XXVI ... (2007), “the Commission requested the Secretariat to annually prepare and submit a table for SCIC’s ... consideration containing data on individual Dissostichus spp. tagged and released, and the tagging rate reported ...
Meeting Document : CCAMLR-XXVII/BG/22 : Author(s): Delegation of Australia