Search results
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Solutions to seabird by-catch in Alaska’s demersal longline fisheries
and 2000) in 2 major Alaska demersal longline fisheries: the Gulf of Alaska /Aleutian Island ... we saw orders of magnitude variation in bycatch across years and in the case of the sablefish fishery ... conditions. We report the results of experimentally rigorous tests of seabird bycatch deterrents on the local ... abundance, attack rate, and hooking rate of seabirds in both fisheries. Based on our results, we recommend a ...
Meeting Document : WG-FSA-01/35 : Author(s): E.F. Melvin, J.K. Parrish, K.S. Dietrich and O.S. Hamel (USA)
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Longline sink rates on a bottom autoline vessel in New Zealand: draft
longline of this design sinks to 10m in a mean time of 63.0 seconds (n = 11, c.v. 16.7%), compared ... with the start of the longline which takes a mean time 31.1 seconds (n = 11, c.v. 30.4%) to reach 10m. The tori ... line aerial section covered the longline for a mean time of 26.3 seconds (n = 25, c.v.13.6 ... longline of this design sinks to 10m in a mean time of 63.0 seconds (n = 11, c.v. 16.7%), compared ...
Meeting Document : WG-FSA-98/51 : Author(s): N.W. McL. Smith (New Zealand)
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Fishing ground selection in krill fishery: trends in its patterns across years, seasons, and nations
also recognized in order to accommodate any possible development of the fishing techniques. Author(s ... third of them were identified as the main contributors to the total catch. A shift of operational timing ... century of krill operation in Area 48, patterns of SSMU usage has changed. Three different patterns of ... seasonal SSMU selection were characterized by following the result of cluster analysis. Frequently used ...
Meeting Document : WG-EMM-05/28 : Author(s): S. Kawaguchi (Australia), K. Taki and M. Naganobu (Japan)
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Krill biomass and density distribution in February–March 2002 in Subarea 48.3
feeding on krill in the area of the South Georgia western extremity where main feeding grounds serving ... Abstract: Presented are the results of krill acoustic survey carried out by Russian RV Atlantida ... February 14 to March 5, 2002. Average krill density in the survey area was estimated at 45.45 g/m2 and ... total biomass at 1,898,492 ton. The analysis of krill aggregation distribution was made for ...
Meeting Document : WG-EMM-03/30 : Author(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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Change-in-ratio and index-removal methods for population assessment and their application to snow crab (Chionoecetes opilio)
composition, in order to use these methods. We use the methods to estimate the population of legal-size snow ... for fisheries studies. We also show how to combine the two approaches in a single estimator. It is ... crabs (Chionoecetes opillio) in St. Mary's Bay, Newfoundland, before and after the fishery, and to ... of pre-recruits but this requires the assumption of equal catch ability of all animals, a condition ...
Meeting Document : WS-CRAB-93/10 : Author(s): X. Xu, E.G. Dawe and J.M. Hoenig (USA)
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Short note on time series of Drake Passage Oscillation Index (DPOI) and its influence on environmental variability
Abstract: An assessment of the environmental processes influencing variability in the recruitment ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability in ...
Meeting Document : WG-EMM-07/14 : Author(s): M. Naganobu and K. Kutsuwada (Japan)
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Seabird interactions with longlining operations for Dissostichus eleginoides at the South Sandwich Islands and South Georgia
). There is increasing evidence tha t these decl ines a re re la ted to inc identa l mortality associated ... in their longline f ishery. In respect of longl ine f isheries for Dissostichus eleginoides in the Southern ... Ocean, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) adopted ... Conservation Measure 29/X (Minimisation of the Incidental Mortality of Seabirds in the Course of Longline ... involving the setting and hauling of longlines to catch the toothfish Dissostichus eleginoides around the ... of birds are clearly potentially vulnerable to setting operations in daylight hours. Several species ... of the seabirds present presumably originated from South Georgia populations; however wandering and ... vulnerability to longlining operations in the South Sandwich Islands may, therefore, be low. Quantitative data ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 143–153 : Author(s): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno
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Working Group on Statistics, Assessments and Modelling (WG-SAM)
year since 2003, usually in association with the timing and location of the meeting of the Working ... , Assessments and Modelling (WG-SAM). In 2011 the terms of reference for WG-SAM were expanded to allow ... In 2001, WG-FSA identified the difficulties that arose when new quantitative methodologies are ... introduced and incorporated into assessments undertaken during the time of a single meeting. As a result, the ...
Page : Site Section: Science
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The fishery for Champsocephalus gunnari and its biology at Heard Island (Division 58.5.2)
populations in the respective areas are mostly independent of one another. Author(s): R. Williams, E. van ... Abstract: Commercial trawl fisheries in the modern era started within the Heard Island EEZ in ... of the species gathered from the fishery and from a series of fishery-independent surveys conducted ... periodic abundant year classes that can be followed through the population before disappearing in their ...
Meeting Document : WAMI-01/04 : Author(s): R. Williams, E. van Wijk, A. Constable and T. Lamb (Australia)
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Working Group on Incidental Mortality Associated with Fishing (WG-IMAF)
-IMAF met annually until 2009 when, in response to the reductions in incidental mortality of seabirds ... mortality in the krill trawl fishery. The current Co-conveners of WG-IMAF are Mr Nathan Walker (New Zealand ... In response to concerns over the decline in albatross populations, and the potential for this to ... be exacerbated by interactions with CCAMLR fisheries, the Commission undertook initial discussion in ...
Page : Site Section: Science