Resultados de la búsqueda
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Towards a validation of ageing in mackerel icefish (Champsocephalus gunnari) – can we estimate age more accurately?
older than 3 or 4 years were aged. These differences could not be reconciled at the end of the exchange ... was agreed upon at the last meeting of the ‘Working Group on Fish Stock Assessment’. Our report ... Abstract: Age estimates of mackerel icefish from different laboratories obtained during a CCAMLR ... . A second age determination workshop on mackerel icefish to improve the accuracy of age determination ...
Meeting Document : WG-FSA-05/23 : Autor(es): K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)
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Considerations for the hosting of by-catch identification guides for scientific observers
whilst at sea, as freely available resources are limited, and often cover only a selection of common ... Abstract: Identification of bycatch species for scientific observers can be a difficult task ... has received several responses, included a Korean guide presented at WG-EMM (WG-EMM-15/06). This paper ... considers options for the development and distribution of these materials. Author(s): CCAMLR Secretariat ...
Meeting Document : WG-FSA-15/13 : Autor(es): CCAMLR Secretariat
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Longline sink rates of an autoline vessel, and notes on seabird interactions
, and relative proportion of each species present. A large proportion of the seabirds present at any one ... Abstract: A series of longline sink-rate trials were conducted with and without weights, from an ... attachment method for Time Depth Recorders was developed. A tori line was used at all times by the vessel ... , and the design was refined during the voyage. The aerial section of the tori line appeared to provide ...
Meeting Document : WG-FSA-01/44 : Autor(es): N.W.McL. Smith (New Zealand)
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AGREEMENT ON THE CONSERVATION OF ALBATROSSES AND PETRELS – REPORT TO AD HOC WG-IMAF
been submitted as a background document for consideration at CCAMLR XXVIII. There were no meetings of ... of the Ad-hoc WG IMAF. However, the Agreement was represented at the Second Joint Meeting of Tuna ... Abstract: The Agreement on the Conservation of Albatrosses and Petrels held the Third Session of ... its Meeting of the Parties from 27 April – 1 May 2009. Key outcomes of relevance to the Ad Hoc WG-IMAF ...
Meeting Document : WG-IMAF-09/17 : Autor(es): Submitted by ACAP
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On peculiarities of icefish (Champsocephalus gunnari) vertical distribution in different habitats
Abstract: The significant similarity of Kerguelen and South Georgia icefish Ch.gunnari ... populations ecology has been revealed. Fish of all lengths and ages are planktonphages. Fish of the first two ... . Immature fish also partially distribute in the pelagic layer both in the daytime and at night. Mature fish ... , as a rule, are at the bottom in the daytime, however in some years they like immature fish, have been ...
Meeting Document : WG-FSA-03/54 : Autor(es): J.A. Frolkina (Russia) and V.V. Herasimchuk (Ukraine)
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PRELIMINARY ASSESSMENT OF TOOTHFISH IN SUBAREA 48.3
2006. Fits to the catch at age data are good, except for 2009 where large numbers of age 7 and age 9 ... Abstract: 1. 2009 data have been incorporated in to the catch-at-age based CASAL model for ... lognormal recruitment suggest a long-term yield of 3900 t. Using a recent subset of estimated cohorts ... ASSESSMENT OF TOOTHFISH IN SUBAREA 48.3 Approval: Approved ...
Meeting Document : WG-FSA-09/28 Rev. 1 : Autor(es): D.J. Agnew and T. Peatman (United Kingdom)
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Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations
chick rearing period of the breeding cycle at South Georgia. At this time the activity range of these ... Abstract: We develop a new approach to quantifying habitat use within the foraging ranges of ... satellite-tracked seabirds. We applied kernel estimation techniques to 167 days (3738 locations) of data ... . In contrast, kernel estimation reveals that the main foraging areas of these two sympatric ...
Meeting Document : WG-FSA-99/19 : Autor(es): A.G. Wood (United Kingdom), B. Naef-Daenzer (Switzerland), P.A. Prince and J.P. Croxall (United Kingdom)
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Broadbandwidth total target strength measurements of Antarctic krill (Euphausia superba) from reverberation in a cavity
Abstract: Total scattering cross-sections (st) of Antarctic krill, Euphausia superba, were ... strengths (??10log(??4?) t TTS), were measured from groups of 57 to 1169 krill (average standard length ... = 31.6 mm; standard deviation = 6.6 mm), at the Cape Shirreff field station, Livingston Island ... omnidirectional emitter into one of three glass carboys containing groups of krill swimming in 9.3, 19.3 or 45.9 l ...
Meeting Document : WG-EMM-02/49 : Autor(es): D.A. Demer and S. G. Conti (USA)
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Effects of recruitment variability and natural mortality on Generalised Yield Model projections and the CCAMLR Decision Rules for Antarctic krill
. At the higher catches of the precautionary catch limit, populations based on recruitment vectors from ... ;vector of recruitments" input option to simulate the population dynamics of krill in the Antarctic ... Peninsula region (Subarea 48.1) under various assumptions. The annual proportions of krill less than 36 mm ... in length to the total captured in AMLR net samples in four sampling regions of the Antarctic ...
Meeting Document : WG-EMM-12/26 : Autor(es): D. Kinzey, G. Watters and C. Reiss (USA)
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Development of environmental indices F1, F3 and F4
at or near CEMP sites, and the dynamics of penguins during the breeding season are discussed. Author ... Abstract: The development of CEMP indices derived from visual data (indices F1, F3 and F4 ... ), automatic weather stations and satellite imagery is explored with reference to the CEMP sites at Edmonson ... Secretariat) Title: Development of environmental indices F1, F3 and F4 Approval: Approved ...
Meeting Document : WG-EMM-00/27 : Autor(es): S. Olmastroni and S. Corsolini (Italy), K. Kerry and J. Clarke (Australia) and D. Ramm (CCAMLR Secretariat)