Search results
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Modelling krill recruitment
Abstract: A method is developed for using observed values of the mean proportion of recruits and ... its variance to model recruitment in a krill population in terms of numbers of recruits. The method ... includes the calculation of natural mortality and other parameters consistent with the observed ... proportional recruitment parameters. A procedure is given for generating families of recruitment functions ...
Meeting Document : WG-KRILL-93/13 : Author(s): W. de la Mare (Australia)
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Fishing gear, marine debris and oil associated with seabirds at Bird Island, South Georgia, 2001/02
Abstract: This report describes and quantifies occurrences of fishing gear, marine debris and oil ... association with wandering albatrosses compared to last year, but the number of items (63) remains well above ... the mean since annual recording began. The number of items of fishing gear associated with grey-headed ... albatrosses (mostly small plastic fragments) than in any previous year. Small quantities of marine debris ...
Meeting Document : SC-CAMLR-XXI/BG/07 : Author(s): Delegation of the United Kingdom
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Krill fishery report: 2012 update
were fishing, at the time of preparing this report, and 935 t of krill has been reported so far for ... June. The forecast total catch of krill for this season ranges approximately from 108000 to 151000 t ... . In 2010/11, 13 vessels fished for krill in Area 48 and the total catch of krill was 180986 t; two ... vessels used the continuous fishing system. The largest catch of krill was taken off the South Orkney ...
Meeting Document : WG-EMM-12/05 : Author(s): Secretariat
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Skate tagging in the Heard Island and McDonald Island (Division 58.5.2) toothfish fishery up to 2013
take three species of skates, Bathyraja eatonii, B. irrasa and B. murrayi, as their most common ... biology of these species. In the 13 years, over 12,000 skates have been tagged, with 112 recaptures, a ... recapture rate of less than one percent. The average distance between release and recapture for each of the ... liberty of nearly eight years for one B. irrasa. Range of movement in depth was between-266 m and 280 m ...
Meeting Document : WG-FSA-13/22 : Author(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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Casal2: New Zealand’s integrated population modelling tool
assessment pack-age since 2002. Casal2 replicates most of CASAL’s functions such as many stocks, fisheries ... , and areas; age-or length-based dynamics; the use of several data sources (e.g., abundance indices, age ... efficient program-ming practices and tools than CASAL. CASAL has enabled a more efficient use of resources ... for stockassessments, such as allowing a wider range of staff to conduct assessments, helped ...
Meeting Document : WG-SAM-18/P01 : Author(s): I. Doonan, K. Large, A. Dunn, S. Rasmussen, C. Marsh and S. Mormede
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Considerations about managing the krill fishery at small spatial and temporal scales
Abstract: We discuss a number of ecological issues in relation to CCAMLR’s aspiration for ... detail, and a lot of detail is potentially necessary for managing at these smaller scales. Much of this ... impacts of fishing, augmenting CCAMLR’s existing large-scale management framework. Seasonal, or year round ... closed coastal buffers will alter the potential levels of catch displacement, and therefore highlights ...
Meeting Document : WG-EMM-2019/22 : Author(s): P.N. Trathan, V. Warwick-Evans and E. Young
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Comparisons in diet between diurnal and overnight foraging chinstrap penguins at Seal Island
Abstract: Diets of diurnal and overnight foraging chinstrap penguins (Pygoscelis antarctica ... ) breeding at Seal Island during chick-brooding period of 1988/89, 1989/90, 1993/94 and 1994/59 were analyzed ... their diets but fish constituted 0-1 % and 14-45 % of the diet of diurnal and overnight foragers ... respectively. The highest intake of fish was observed in 1993/94 when krill abundance was very low. Calorific ...
Meeting Document : WG-EMM-96/55 : Author(s): Hayashi, T., Ichii, T., Cameron, M.F., Miura, A., Jansen, J.K., Bengtson, J.L., Boveng, P.
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Report on an Antarctic cetacean survey on board a Chilean fishing vessel in February 2016
. A total of 44 fin whale (Balaenoptera physalus) groups comprising 61 individuals were recorded on ... effort, and a total of 28 humpback whale (Megaptera novaeangliae) groups comprising 47 individuals. A ... , 35 sightings of mainly mixed-species groups and feeding aggregations of large whales were observed ... , comprising 217 individuals, including calves of both humpback and fin whales. The preliminary results of the ...
Meeting Document : WG-FSA-16/19 : Author(s): S. Viquerat, H. Herr, K.-H. Kock and P. Arana
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Observation on the interactions between marine mammals and mid-water krill trawl
conducted visually with the aid of a SLR Camera and a Marine Binocular. Sea surface observation in Subarea ... 48.3 showed that the number of fur seal (Arctocephalus gazelle) around the fishing vessel increased ... from late July to August then decreased in September, and over 85% of the fur seals was observed ... chasing the trawl behind the codend during retrieving of the net. Although large number of Antarctic fur ...
Meeting Document : WG-FSA-2019/60 : Author(s): Y. Ying, G. Fan, X. Zhao, J. Zhang, X. Wang and J. Zhu
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Marine pollution
2.5.1 Effectiveness of CCAMLR to implement measures to provide for protection of the Southern ... Ocean and Antarctic environment from the impacts of vessels engaged in harvesting, research ... Committee agreed to adopt reporting on lost fishing gear as part of the C2 data forms; (2009) SC-CAMLR ... details of the prevention of marine pollution provisions of Annex IV to the Environmental Protocol ...
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