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Development of a fine-scale model of land-based predator foraging demands in the Antarctic
Abstract: The CCAMLR Secretariat has been requested to provide annual calculations of the catch ... of krill within the critical period-distance of land-based predators in Subareas 48.1 and 48.2 (100km ... from colonies, December- March). This index of the overlap of predators and the fishery is unsuitable ... for a number of reasons. An alternative method of calculating an index of fishery-predator interaction ...
Meeting Document : WG-Joint-94/08 : Автор(ы): D.J. Agnew and G. Phegan (Secretariat)
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Dynamics of abundance and state of Notothenia rossii rossii stocks on the Kerguelen Island shelf
Abstract: Population structure and dynamics of the abundance of Notothenia rossii rossii on the ... Kerguelen Island shelf from the beginning of the fishery to 1984 has been examined.Total and commercial ... stocks of this species have been determined proceeding from data of inventory trawl survey and ... calculation by mathematical modelling.Comparative estimates of the abundance and recruitment-remainder ratio ...
Meeting Document : WG-FSA-90/41 : Автор(ы): P.B. Tankevich and V.A. Shlyakhov (YugNIRO, USSR)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2014
provides the scientific basis for the evaluation of marine protected areas (MPAs) in the Weddell Sea ... . Please note, that the current state of the background document presents a comprehensive yet incomplete ... structure of the document reflect also its main objectives, i.e. (i) to set out the general background and ... context of the establishment of MPAs, (ii) to describe the boundaries of the Weddell Sea MPA Planning Area ...
Meeting Document : SC-CAMLR-XXXIII/BG/02 : Автор(ы): Delegation of Germany
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CONDITIONING SMOM USING THE AGREED CALENDAR OF OBSERVED CHANGES IN PREDATOR AND KRILL ABUNDANCE: A FURTHER STEP IN THE DEVELOPMENT OF A MANAGEMENT PROCEDURE FOR KRILL FISHERIES IN AREA 48
Abstract: The updated version of the Spatial Multi-species Operating Model (SMOM) of krill ... -predator-fishery dynamics described in an accompanying paper is conditioned using the WG-SAM set of ... reference observations for Area 48 (the SAM calendar). Results are presented for two implementations of SMOM ... , one with the time series of krill abundance fixed on input, and the other incorporating an explicit ...
Meeting Document : WG-EMM-08/44 : Автор(ы): É.E. Plagányi and D.S. Butterworth (South Africa)
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Further calculations of the effects of krill fishing on predators
random component in the relationship between krill biomass and availability. An examination of the ... consequences in the case of the blackbrowed albatross suggest that these other factors result in yet lesser ... resilience of the albatross population to the effects of a krill fishery. An approach for estimating the ... parameters of functional relationships between survival rates and krill biomass (or availability) is ...
Meeting Document : WG-Krill-94/24 : Автор(ы): D.S. Butterworth and R.B. Thomson (South Africa)
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Estimation of the biomass of krill in Prydz Bay during January/February 1991 and February/March 1992 using echo integration
Abstract: Hydroacoustic surveys of the abundance of krill (Euphausia superba) in the Prydz Bay ... association of krill with the shelf break in the western part of the survey area but also found that the shelf ... break was in general not a region of relatively high krill abundance. The mean surface density of krill ... estimates of 1.95, 3.45 and 1.78 g/m2 for statistical areas 48.1, 48.2 and 48.3 (SC-CAMLR 1991, p47) but ...
Meeting Document : WG-KRILL-92/23 : Автор(ы): I. Higginbottom and T. Pauly (Australia)
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Results of scientific observation in Antarctic krill fishery in 2010/11: I. state of observer deployment and data collection
Abstract: We analyzed the 2010/11 krill observer data to confirm the outcome of recent revisions ... of krill observation scheme. This paper summarizes the status of observer deployment, sampling ... , the coverage of krill biological sampling for hauls and the number of krill sampled for biological ... current state of data collection, mere extension of the observer coverage may not result in the ...
Meeting Document : WG-EMM-12/65 : Автор(ы): M. Kiyota and T. Okuda (Japan)
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Exploration of CPUE standardisation variances in the Ross Sea (Subareas 88.1 and 88.2A South of 70°s) Antarctic toothfish (Dissostichus mawsoni) exploratory longline fishery
Abstract: Catch rates or catch per unit of effort (CPUE) are used for data-poor exploratory ... interim of collecting sufficient tag recaptures. Here, we address the two questions: (1) which unit of ... such as gear type, vessel, fishing season, month, bait, fishing depth and area affect estimates of ... trend and magnitude of catch rates. Using data from the Ross Sea Antarctic toothfish fishery, we ...
Meeting Document : WG-SAM-2019/25 : Автор(ы): D. Maschette, S. Wotherspoon and P. Ziegler
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Estimation of the biomass of krill in Prydz Bay during January/February 1991, February/March 1992 and January/ February 1993 using echo integration
Abstract: Hydroacoustic surveys of the abundance of krill (Euphausia superba) in the Prydz Bay ... surveys indicated some association of krill with the shelf break in the western part of the survey area ... and the centre of the Prydz Bay region but also found that the shelf break was in general not a region ... of relatively high krill abundance. The mean surface density estimates of krill in 1991, 1992 and ...
Meeting Document : WG-Krill-94/21 : Автор(ы): T. Pauly and I. Higginbottom (Australia)
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The distribution pattern and fishery for the Antarctic krill (Euphausia superba) off the Wilkes Land and Balleny Islands (with notes on the application of CPUE data as indices of krill abundance)
Abstract: Hydrological conditions, the distributiion pattern of krill and characteristics of the ... variability of some CPUE indeces (TC/TH/PPST; TC/TFISHT; TC/TFISHT/PPST) is analysed on the basis of data ... °- 150° E) are likely to be. an area of regular occurence of krill concentrations, probably the frequency ... of their occurence is the highest in the whole East Indian and West Pacific Anrarctic. This seems to ...
Meeting Document : WG-KRILL-90/16 : Автор(ы): V.N. Dolzhenkov, E.A. Kovalev, V.A. Spiridonov, V.P. Timonin, I.A. Zhigalov (USSR)
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