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Further krill-predator model calculations
Antarctic fur seal dataset. These calculations are extended here. The level of krill fishing intensity ... estimated previously. Tests of the estimation procedure indicate that γhalf estimates are likely to be ... biased upwards. The estimator is not robust to incorrect specification of the form of the functional ... relationship assumed between krill availability and survival rates, and especially not to the assumption of the ...
Meeting Document : WG-EMM-97/70 : Автор(ы): Thomson, R.B., Butterworth, D.S.
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Krill catch distribution in relation to predator colonies, 1987-1991
Abstract: The distribution of krill catches in relation to predator colonies in Subareas 48.1 and ... 48.2 is shown. 74-90% of catches in Subarea 48.1 are taken within 100 km of predator colonies between ... December and March, and these are between 10 and 18% of the estimated total penguin consumption in this ... period. The pattern of fishing is very consistent in all years 1988-1991 in Subarea 48.1, but is more ...
Meeting Document : WG-KRILL-92/18 : Автор(ы): Secretariat
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CEMP data inventory and summary analysis
krill-based ecosystems to provide a basis for regulating harvesting of Antarctic living marine resources ... process and methods used to provide data extracts for analyses by Members as part of the development of ... approaches to feedback management. This report also includes a number of issues for consideration in relation ... to the clarification of the format for submitting data on penguin breeding population size and ...
Meeting Document : WG-EMM-16/08 : Автор(ы): CCAMLR Secretariat
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Krill consumption by Adélie penguins in CCAMLR Divisions 58.4.1 and 58.4.2
Abstract: We estimate the total abundance of Adélie penguins foraging in Divisions 58.4.1 and ... 58.4.2 and provide preliminary estimates of krill consumed by breeding Adélie penguins in these Divisions ... using a newly developed bio-energetics model. Our estimate of ~6 million Adélie penguins substantially ... breeding population than was evident from previous work. The population of breeding Adélie penguins was ...
Meeting Document : WG-EMM-16/65 : Автор(ы): C. Southwell and L. Emmerson
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Research concept on catchability to study toothfish abundance/stocks in the Antarctic marine areas
Abstract: Main two methods, which are used for the estimation of abundance/stocks of toothfish in ... CPUE data. But calculation of toothfish abundance with using these methods demands a number of ... assumptions, which sometimes broaden too much the possible values of the calculated parameters. The authors ... present a method approach concerning possible use of a bottom trawl survey to estimate a minimum ...
Meeting Document : WG-SAM-18/19 : Автор(ы): K. Demianenko, L. Pshenichnov, O. Diripasko and V. Gurianov
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О пересмотре предохранительного подхода для обеспечения рационального использования живого ресурса (Dissostichus eleginoides) в Подрайоне 48.3
. This paper reviews the long-term decline in the size structure of Patagonian toothfish (Dissostichus ... the start of the 2000s until now, longline fishing in the South Georgia area has targeted immature ... fish smaller than 100 cm. The issue of non-rational use of the Patagonian toothfish stock in Subarea ... 48.3 is examined. Author(s): Delegation of the Russian Federation Title: Revision of the ...
Meeting Document : CCAMLR-38/31 Rev. 2 : Автор(ы): Делегация Российской Федерации
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Different CPUE types in Soviet krill fishery statistics in 1977–1992
values of CFD and CEFD, and CFD and CH. Instead, correlation between daily values is rather low, due to ... high fluctuations in hauls duration caused by fishery strategy directed to different final product of ... , number of hauls per day ranged from 1 to 15, mainly 2-4, hauls lasted from 0,1 to 16 hours, mainly 3-8 ... higher number of hauls per day. The histograms of distribution of various CPUE, hauls duration, number of ...
Meeting Document : WG-EMM-03/35 : Автор(ы): F.F. Litvinov, A.Z. Sundakov and V. Arkhipov (Russia)
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Rajid by-catch in the longline fishery for toothfish in Subarea 48.3
preliminary analysis of data collected by UK scientific observers on vessels fishing toothfish in Subarea 48.3 ... from April to July 1999. The overall average catch rate of rays was 0.7/thousand hooks, compared with ... models demonstrated that there are significant differences between the catch rates of rays for different ... vessels, areas, and depths in Subarea 48.3. Some vessels, fishing on the northern shelf edges of both Shag ...
Meeting Document : WG-FSA-99/40 : Автор(ы): D.J. Agnew, J. Taylor and I. Everson (United Kingdom)
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Climate change and precautionary spatial protection: seasonal sea ice
little changed by human activities, particularly by the impacts (either direct or indirect) of marine ... harvesting. If CCAMLR is to embrace the wider implications of climate change in the context of ecosystem ... change, both in the presence of and absence of harvesting. We therefore recommend that locations ... currently covered by seasonal sea ice (as of 2011) could be considered for creation as restricted use Marine ...
Meeting Document : WS-MPA-11/18 : Автор(ы): P.N. Trathan and S.M. Grant (UK)
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JAPANESE SCIENTIFIC OBSERVER ACTIVITIES FOR KRILL FISHERY IN CCAMLR CONVENTION AREA FROM 2003/04 TO 2007/08 FISHING SEASONS
Abstract: This document introduces the recent activities and outcome of Japanese scientific ... grounds of the Japanese fishery were the Subareas 48.1, 48.2, and 48.3. Recent observation effort was ... are analyzed through a cooperative scientific network on Antarctic ecosystem. Biological analysis of ... the incidentally caught species yielded guidelines for sampling and species identification of larval ...
Meeting Document : WG-EMM-09/19 : Автор(ы): M. Kiyota and T. Iida (Japan)
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