Résultats de la recherche
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Solutions to seabird by-catch in Alaska’s demersal longline fisheries
years, regions, and fleets (88% to 100% relative to controls with no deterrent), despite the fact that ... suite of bycatch mitigation measures. Among all deterrents tested, paired streamer lines proved to be ... adjustment as physical conditions changed. Functionally, paired streamer lines created a moving fence that ... precluded seabird attacks. Most significantly, this success came with no consequence to catch rates of ...
Meeting Document : WG-FSA-01/35 : Auteur(s): E.F. Melvin, J.K. Parrish, K.S. Dietrich and O.S. Hamel (USA)
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An investigation of integrated stock assessment methods for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
al. (2006), but with a recognition that some age classes are only partially selected in these surveys ... show that an integrated assessment for Dissostichus eleginoides in Division 58.5.2 seems tractable. The ... recruitment series derived from surveys has similarities with the recruitment series estimated by Welsford et ... fishing selectivities. The uncertainty arising from this tension will need to be explored further in order ...
Meeting Document : WG-FSA-SAM-06/14 : Auteur(s): A. Constable, S. Candy and I. Ball (Australia)
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Research plan for toothfish in Division 58.4.4a & b by Shinsei Maru No. 3 in 2013/14
stating that the sensitivity run of the CASAL model should be made by using levels of IUU ranging from ... CASAL_base model includes estimated variability of YCS for the period from 1989 to 2005, and assumed that a ... modified Lincoln-Petersen (446 tonnes). The catch and tagging data in SSRU D were not enough to be applied ... estimated only by using CPUE comparison with the stock size estimates in SSRU C obtained from each method ...
Meeting Document : WG-SAM-13/21 : Auteur(s): Delegation of Japan
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INGESTION OF FISHING GEAR AND ENTANGLEMENTS OF SEABIRDS: IMPLICATIONS FOR MONITORING AND MANAGEMENT
corresponding with a substantial increase in the number of multifilament snoods (gangions), suggesting that the ... of a 16 year dataset collected at Bird Island indicated that the amount of gear found in association ... with wandering albatross colonies was an order of magnitude greater than in any other species ... , reflecting their wider foraging range and larger gape. Unlike other taxa, most gear associated with grey ...
Meeting Document : WG-IMAF-09/10 : Auteur(s): R.A. Phillips, C. Ridley, N. Harrison (United Kindom), K. Reid (Secretariat), G.N. Tuck (Australia) and P.J.A. Pugh (United Kingdom)
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Incidental mortality of seabirds and marine mammals during longline fishing around the Falkland/Malvinas Islands
Abstract: Data on incidental mortality of seabirds and marine mammals associated with longline ... fishing around the Falkland Islands between August 1996 and May 1997 are briefly summarised. For seabirds ...
Meeting Document : WG-FSA-97/21 : Auteur(s): Cielniaszek, Z., Croxall, J.P.
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Preliminary assessment of the South Georgia toothfish stock, 2007
be considered, and that the toothfish assessment is undertaken at periods of greater than one year ... Abstract: 1. The catch-at-length based CASAL model for toothfish at South Georgia is updated with ... data that tag-induced growth retardation is also related to size, smaller fish suffering less growth ... retardation than larger fish, and that on average it is 1 year or more. 3. A new model is developed which uses ...
Meeting Document : WG-FSA-07/29 : Auteur(s): D.J. Agnew, R. Hillary and J. Pearce (United Kingdom)
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Krill population dynamics in the Scotia Sea: variability in growth and mortality within a single population
Abstract: Understanding the demographics of Antarctic krill over large scales may be complicated ... by regional differences in the 11 processes that govern population structure. The influence of ... modal size classes that was not present 15 in the raw data. Optimising the mortality rate, to minimise ... rate at South Georgia that the South Shetlands. The intra-specific variations in growth and mortality ...
Meeting Document : WG-EMM-02/16 : Auteur(s): K. Reid, E.J. Murphy (United Kingdom), V. Loeb and R.P. Hewitt (USA)
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Ocean acidification and the Southern Ocean
, including the Southern Ocean. The relative undersaturation of CaCO3 in the Southern Ocean suggests that ... organisms such as the pteropods that form the base of much of the Southern Ocean food chain. Orr et al (2005 ... ) predicted that under the Intergovernmental Panel on Climate Change (IPCC) IS92a warming scenario, which ... be undersaturated throughout the Southern Ocean. Even under the more conservative IPCC S650 scenario ...
Meeting Document : CCAMLR-XXIX/BG/24 : Auteur(s): ASOC Observer
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WG-SAM-18
: Dr Keith Reid Submissions Due: Monday, 11 June 2018 Please note that meeting-specific information is ... arrive: Familiarise yourself with the functionality of the meeting server. Meeting documents Doc Number ... Predicting fishing ground accessibility in the Antarctic Weddell Sea H. Pehlke, K. Teschke and T. Brey WG-SAM ... , K. Teschke, H. Pehlke and T. Brey WG-SAM-18/17 Draft proposal for multi-Member research on the ...
Meeting
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Results from the reduced groundfish survey conducted in CCAMLR Subarea 48.3 in January 2012
between the 26-28th January 2012. This survey was not intended to be a full biomass survey so only 20 ... random hauls were completed around Shag Rocks with 3 additional opportunistic sites at South Georgia ... . Reasonable catches of Patagonian toothfish were found around Shag Rocks (greater than in 2009 and 2010), with ... -weighted length frequencies of mackerel icefish indicated that 2+ and 3+ sized fish dominated at Shag Rocks ...
Meeting Document : WG-FSA-12/37 : Auteur(s): J. Brown, S. Gregory, A. Stanworth, V. Carretero, G. Baker and M. Belchier (United Kingdom)