Resultados de la búsqueda
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Quantifying the escape mortality of trawl caught Antarctic krill (Euphausia superba)
of which are expected to increase. However, many of the length classes of krill can escape through ... commonly used commercial trawl mesh sizes. A vital component of the overall management of a fishery is to ... estimate the total fishing mortality and quantify the mortality rate of individuals that escape from ... mortality rates of escaped krill. Haul duration, hydrological conditions, maximum fishing depth and catch ...
Meeting Document : WG-EMM-16/04 : Autor(es): B.A. Krafft, L.A. Krag, A. Engås, S. Nordrum, I. Bruheim and B. Herrmann
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By-catch of morid cods (Gadiformes: Moridae) in the CCAMLR area and adjacent areas during commercial fishing and research surveys
distributions, size composition and abundance of morids in the CCAMLR and adjacent areas. The main goal is to ... detection of areas and depths of their aggregations, by reveal of presence/absence of spatial and vertical ... migrations and by study of their seasonal and multi-annual variations. Results will be used for preparation ... of conservation measures allowing for preservation these vulnerable by-catch species from irreparable ...
Meeting Document : WG-EMM-16/24 : Autor(es): Delegation of the Russian Federation
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Preliminary biomass estimation of Antarctic krill based on the swarm-based method for CCAMLR Division 58.4.1 in 2018/19 using data obtained by Japanese survey vessel Kaiyo-maru
Abstract: Biomass (B 0) of Antarctic krill for CCAMLR Division 58.4.1 in 2018/19 was ... different, (2) timing of the surveys were different (Kaiyo-maru survey commenced about 40 days earlier than ... BROKE) and (3) areal coverages were different primary because of difference of positions of sea ice edge ... especially in the western part of the Division. The CV of biomass estimate of Kaiyo-maru survey was high ...
Meeting Document : SG-ASAM-2019/02 : Autor(es): K. Abe, R. Matsukura, N. Yamamoto, K. Amakasu and H. Murase
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Biomass abundance and distribution of fish in the Kerguelen Islands’ zone (Division 58.5.1)
(September-October 2006) off the Kerguelen Islands (division 58-5-1), the northern part of the Kerguelen ... Plateau. The sweep-area method was used in the range 100 and 1000 m with random stratified stations of ... bottom trawling. Estimations of biomass and abundance are provided for eight commercial species. The ... of the value (124 000 tonnes). The biomass is displayed between the shelf and the deep-sea. Such ...
Meeting Document : WG-FSA-07/16 : Autor(es): G. Duhamel and M. Hautecoeur (France)
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Analysis of krill fishery behaviour in the southwest Atlantic: potential signals for moving fishing activities amongst SSMUs
seasons by analyzing CPUE (catch per hour) patterns towards the end of their sets of operations before ... leaving a SSMU, as well as its timing of the day, diurnal pattern of CPUE and fishing depth. Vessels tend ... than a day to explore the fishing grounds from multiple options for the start of the fishing season ... . Vessels move around less frequently in Subarea 48.2 during the summer season because of only one viable ...
Meeting Document : WG-EMM-07/27 : Autor(es): S. Kawaguchi, A. Constable and S. Nicol (Australia)
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Estimates of krill biomass with commercial significance in small-scale management units applying geostatistics techniques
Abstract: The analysis of krill density and biomass distributions was made by the example of SGE ... Russian survey 2002 were used. Processing of the acoustic survey data in 2000-2002 was made applying ... geostatistical methods. It was revealed significant inter-annual and seasonal variability of the standing stock ... biomass constituted 1.0587 mlt for eastwards of 37°W and 1.000mt for westward of 37°W, but commercial ...
Meeting Document : WG-EMM-06/36 : Autor(es): S.M. Kasatkina and P.S. Gasyukov (Russia)
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Setting a minimum line length for line sink rate testing: a review of existing data and some preliminary proposals for CCAMLR consideration in revising Conservation Measure 24-02 (2004)
Abstract: This paper provides a brief descriptive analysis of some of the available data on the ... length of longlines used in exploratory fisheries and some of the data describing longline sink rate ... trials. In Sub-area 88.1 the maximum length of longline used by auto longline system vessels is ... approximately 15 000 m. The maximum length of longline used by Spanish longline system vessels is approximately ...
Meeting Document : WG-FSA-05/80 : Autor(es): N. Smith (New Zealand)
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Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change
Abstract: The management of Antarctic krill and conservation of its predators requires ... understanding about the compound effects of changing habitats, ecosystem interactions, and fishing practices ... . For Antarctic pack-ice seals, a main group of krill predators, we report the spatial density and krill ... declines consequent on climate change. We find that the WAP has the highest known density of pack-ice seals ...
Meeting Document : WS-MPA-11/24 : Autor(es): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)
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Reports on abundance and biological information of toothfish in Division 58.4.4a & b by Shinsei Maru No. 3 in 2012/13 season
Abstract: A survey was conducted to collect data of stock status and various biological ... information of toothfish in SSRUs C and D of Division 58.4.4a & b (Ob Lena Banks) from April 25 to May 22 ... , 2013. A total of 64 research hauls using normal trotline system were made in SSRUs C and D. Total catch ... of Dissostichus eleginoides (excluding those tagged and released) was 31.1 tonnes in the survey area ...
Meeting Document : WG-SAM-13/20 : Autor(es): K. Taki, T. Ichii, T. Iwami and M. Kiyota (Japan)
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Revised reports on abundance and biological information of toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2012/13 season
Abstract: A survey was conducted to collect data of stock status and various biological ... information of toothfish in SSRUs C and D of Division 58.4.4a & b (Ob Lena Banks) from April 25 to May 22 ... , 2013. A total of 64 research hauls using normal trotline system were made in SSRUs C and D. Total catch ... of Dissostichus eleginoides (excluding those tagged and released) was 31.1 tonnes in the survey area ...
Meeting Document : WG-FSA-13/34 : Autor(es): K. Taki, T. Ichii, T. Iwami and M. Kiyota (Japan)