Resultados de la búsqueda
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First increment validation of Patagonian toothfish (Dissostichus eleginoides) from Heard Island
represent annual events, no direct validation has been provided for the early growth of this species. In an ... one opaque and one translucent increment is formed each year on the sectioned face of sagittal ... assumed to cause interpretation differences was the position of the first increment that corresponded with ... the end of the first year of growth. While there is a general consensus that the observed increments ...
Meeting Document : WG-FSA-05/61 : Autor(es): K. Krusic-Golub, C. Green and R. Williams (Australia)
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Seabird interaction with long-lining operations for Dissostichus eleginoides around South Georgia, April and May 1994
mortalities recorded over twenty sets of the line; no mortalities occurred during hauls. The 16 sets made at ... night contributed 15% of the overall mortality, all of white-chinned petrels: the four day time sets ... decline, were disproportionately affected in relation to their numbers in the vicinity of the fishing ... vessel; giant petrels also may be disproportionately affected, at least in relation to the size of their ...
Meeting Document : WG-IMALF-94/15 : Autor(es): J.R. Ashford, J.P. Croxall (United Kingdom), P.S. Rubilar and C.A. Moreno (Chile)
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e-sc-xxxii-a06.pdf
... there is no information on IUU vessels from closed SSRUs, especially from the Indian Ocean sector of ... decrease with no corresponding change in length. 3.18 The Working Group further noted that the depth ... data equally well because the model utilises fishery-dependent data and therefore has no information ... about the distribution of toothfish in areas where no fishing has occurred. The Working Group agreed
application/pdf attached to:WG-FSA-13Meeting Report : WG-FSA-13
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Extinction risk of Antarctic and sub-Antarctic colonies of Pygoscelid penguins under climate change context
Abstract: Several studies have emphasized the variable abundance of Pygoscelid penguins from ... different colonies around Antarctica. In this study, the extinction risk of Adélie, Chinstrap and Gentoo ... penguins was evaluated in order to identify the most endangered colonies under present-day and future ... environmental scenarios. The extinction risk was estimated for twelve colonies from environmentally contrasting ...
Meeting Document : WG-EMM-2019/74 : Autor(es): M. Huerta and S.A. Estay
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e-sc-xxxvii-a9.pdf
... -XXXVII/12) and highlighted that there were no reports of IUU vessel sightings in the Convention Area in ... the time of the meeting, no fishing had taken place in Subarea 48.3; vessels were expected to start ... . gunnari in Division 58.5.1 3.9 No papers were tabled under this item, and the Working Group provided no ... the UK showed no trend, and recommended such standardisation be presented in 2019 to WG-FSA. 3.20
application/pdf attached to:WG-FSA-18Meeting Report : WG-FSA-18
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Proposals on standardization of toothfish resource research
Abstract: The methodology of modern trawl surveys carried out the ICES responsibility area is ... discussed in the context of discussion at the Scientific Committee and the CCAMLR Commission in 2018 ... regarding the longline survey methodology in Division 58.4.1. It is shown that the methodology of modern ... bottom trawl surveys requires a standardized design of the spatial location of trawl samples and standard ...
Meeting Document : WG-SAM-2019/34 : Autor(es): S. Kasatkina
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Preliminary report on invertebrate by-catch in research blocks 58.4.1, 58.4.2, 54.4.3a and 58.4.4b
indicators have been recorded as part of the C2 and also as part of observers data since CM 22.07 has been ... Workflow Status: Content Approved Document Release Consent: No Delegation responsibility for releasing ...
Meeting Document : WG-FSA-18/51 : Autor(es): M. Eléaume, C. Chazeau, A. Martin and J. Blettery
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Integrated weight longlines with paired streamer lines – best management practice for demersal longline fisheries: preliminary results
Abstract: Minimizing the time gear is available to seabirds by increasing the sink rate of ... mitigation trials targeting Pacific cod in the Bering Sea, Alaska, USA. Our objective was to evaluate IW as a ... behaviour, sink rate of the gear and breaking strength. All mitigation technologies dramatically decreased ... seabird bycatch rates while having little to no effect on fish catch rates. Sink rate measurements ...
Meeting Document : WG-FSA-06/52 : Autor(es): K. Dietrich, E. Melvin and L. Conquest (USA)
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e-sc-xxvi-a7.pdf
... between the methods, apart from issues relating to process error, were no longer a significant issue for ... currently available are mostly from surveys, with no obligation for the krill fishery to provide similar ... will be no methodological changes to the assessment of toothfish in Subareas 58.6/58.7. Division ... REPORTS ANNEX 7 REPORT OF THE WORKING GROUP ON STATISTICS, ASSESSMENTS AND MODELLING (Christchurch
application/pdf attached to:WG-SAM-07Meeting Report : WG-SAM-07
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Validation of sink rates of longlines measured using two different methods
sight behind waves or in congregations of seabirds before the target depth was reached. No TDRs were ... of the ground line – IW-50 lines) were measured during commercial fishing operations using two ... = –0.181, P = 0.859). When the target depth was 15 m, sink rates measured using the bottle method (0.20 ... behind the vessel, i.e. out of the observer’s sight, when they reached the target depth. Bottles had a ... before the target depth was reached. No TDRs were lost during the trial. Bottle tests were most useful ... sit upright in the water was recorded with the same watch as used for the TDRs. Analyses The sink ... with 50 g.m–1 lead integrated into two strands of the ground line – IW-50 lines) were measured during ... difference was not statistically signifi cant (t12 = –0.181, P = 0.859). When the target depth was 15 m ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 179–187 : Autor(es): Wienecke, B. and G. Robertson