Resultados de la búsqueda
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An assessment of longlining operations for Dissostichus eleginoides on board the Chilean-registered longliner BF Cisne Verde during March–May 1997 around South Georgia (Subarea 48.3)
night using the Spanish double-line method with extra weights on the line and all deck-lights ... sampling method; the known number of coils laid during a night's setting operations provided the ... sampling frame, and the sampling units consisted of lengths of line between marked connecting lines ... target of 60 fish/day. The method was further developed to integrate different, and varying, levels of ...
Meeting Document : WG-FSA-97/41 : Autor(es): Ashford, J.R., Everson, I.
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Potential impacts of climate change on the Southern Ocean ecosystem
Abstract: Global climate change has the potential to disrupt the delicately poised themal balance ... in surface waters of the Southern Ocean around Antarctica, threatening this highly productive system ... with severe and permanant collapse. Pivotal to this process is a diminution of the important (but ... little studied) CO2 sink in the Southern Ocean, resulting in a series of feedback loops accelerating ...
Meeting Document : CCAMLR-VIII/BG/21 : Autor(es): R.G. Chittleborough (Australia)
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Influence of tag numbers, size of tagged fish, duration of the tagging program, and auxiliary data on bias and precision of an integrated stock assessment
collection, this study investigated how the bias and precision of a CASAL assessment is influenced by various ... aspects of a tagging program, in particular the effects of the numbers of fish tagged, the duration of a ... tagging program, the size of tagged fish, and the type of auxiliary data used in the assessment. The ... numbers were important particularly in the early stages of an exploratory fishery to ensure some ...
Meeting Document : WG-SAM-12/24 : Autor(es): P.E. Ziegler (Australia)
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Skate tagging in the Heard Island and McDonald Island (Division 58.5.2) toothfish fishery up to 2013
Abstract: The fisheries targeting Patagonian toothfish (Dissostichus eleginoides) and mackerel ... icefish (Champsocephalus gunnari) in the Australian Fishing Zone surrounding Heard Island and McDonald ... bycatches. A tagging program has operated in these fisheries since 2001 to learn more about the movement and ... biology of these species. In the 13 years, over 12,000 skates have been tagged, with 112 recaptures, a ...
Meeting Document : WG-FSA-13/22 : Autor(es): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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Research plan for the exploratory longline fishery for Dissostichus spp. in 2014/15 in Division 58.4.3a
Abstract: In 2011/2012, the Saint André conducted its first exploratory fishery for Dissostichus ... spp. in division 58.4.3a. France notified its wish to continue this exploratory fishery over the ... account the remarks made during the WG-FSA 2013. The objective is to progress on modelling tools and to ... improve the estimation of current biomass. An update of the assessment of Dissostichus eleginoides using a ...
Meeting Document : WG-SAM-14/17 : Autor(es): Delegation of France
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Towards the development of an assessment of stock abundance for Subarea 88.2 SSRUs 88.2C–G – a discussion paper
Abstract: This paper frames a discussion for improving the assessment of toothfish abundance for ... SSRUs 88.2C–G. We initially provide a characterisation of the fishery and a summary of available tagging ... 2 fish have been recaptured. It is likely that the lack of tag recaptures in this region has been ... caused primarily by the poor spatial overlap of released tagged fish with subsequent fishing effort. By ...
Meeting Document : WG-SAM-14/28 : Autor(es): S.M. Hanchet and S.J. Parker (New Zealand)
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Research program on resource potential and life cycle of Dissostichus species from the Subarea 88.2 A in 2015–2018
fishing seasons 2015-2018. The present program aims to recapture tagged fishes released during the ... implementation of the previous research program took place in 2010-2012 fishing seasons and investigate resource ... potential and life cycle of Dissostichus species within the eastern part of the Ross Sea over shelf and ... continental slope within the Subarea 88.2 A. The present document is a new edition of the CCAMLR Document WG ...
Meeting Document : WG-FSA-15/27 : Autor(es): Delegation of the Russian Federation
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By-catch analysis as a part of progress report for the research fishery of Dissostichus spp. in Divisions 58.4.3a and 58.4.4b by Japan and France during 2012/13–2016/17
Abstract: This paper reports the preliminary results of by-catch analysis as a part of progress ... report for the research fishery of Dissostichus spp. in Division 58.4.3a and 58.4.4b by Japan and France ... . Although the by-catch occurred in most longline research operations, the number of by-catch individuals was ... less than 50 individuals in most of the operations. In most of longline operation, by-catch weight was ...
Meeting Document : WG-SAM-17/45 : Autor(es): T. Okuda, A. Rigaud, R. Sinegre and T. Ichii
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Predicting changes in the Antarctic krill Euphausia superba population at South Georgia
Abstract: Variability in the Southern Ocean is frequently reflected in changes in the abundance ... of Antarctic krill Euphausia superba and subsequent effects on dependent predators. However, the ... length ill the diet of predators at South Georgia from 1991-1997, allowed predictions to be made about ... the abundance and population structure of krill in 1998 and the consequences for predators. Consistent ...
Meeting Document : WG-EMM-99/37 : Autor(es): K. Reid, K.E. Barlow, J.P. Croxall and R.I. Taylor (UnitedKingdom)
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Preliminary results of a feeding trial on the blue-eyed shag Phalacrocorax atriceps
bransfieldensis during 45 days of the austral summer at Jubany Station, King George Island, South Shetland Islands ... . The otoliths identified in pellets were affected by the digestive process and consequently the fish ... gibberifrons and Nototheniops nudifrons all the species were underestimated in number (N. rossii fully). G ... . gibberifrons was also the less affected is size, being Pagothenia bernachii, N. nudifrons, Trematomus newnesi ...
Meeting Document : WG-CEMP-94/29 : Autor(es): R. Casaux, M. Favero, E. Barrera-Oro and P. Silva (Argentina)