Search results
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Some thoughts on precautionary measures for the krill fishery
A fundamental aim of establishing conservation measures for a harvested resource is to ensure that harvesting ... estimates can be made, leading to more precise conservation measures. Article I1 of the CCAMLR Convention ... and harvesting. The FIBEX survey took place in the 1980/81 season, over a decade ago, which means ... been determined by direct field observations and by means of micro-encapsulated instrument packages ... : The concept of precautionary measures for krill is discussed. A precautionary catch limit, based on ... precautionary catch limit in large areas, such as Statistical Area 48, but the approach requires considerable ... takes account of the requirements of land-based predators. Implementation of the approach is discussed ... and the question of how the method relates to the current CCAMLR Ecosystem Monitoring Program (CEMP ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 1–11 : Author(s): Everson, I. and W.K. de la Mare
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Information Note for WG-SAM-18
Norwich? Norwich is the main city in the county of Norfolk in the east of England (Figure 1), around 160 ... km to the northeast of London. It’s a place rich in history, full of picturesque cobbled streets ... between the middle ages up to the 18th century, Norwich was one of the most important trading cities in ... says that “There is a church for every Sunday and a pub for every week day of the year in Norwich ...
Page : Site Section: Meetings
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Observer sampling requirements for Dissostichus spp.
sampling requirements are listed in Annex 1 of the CCAMLR Scheme of International Scientific Observation. 2 ... addition to the sample number in the table. Sample numbers in the table below indicate sampling of all fish ... 1. Observer sampling requirements for Dissostichus spp. in longline fisheries based on the data ... up to the number listed in the table. Fisheries in subarea/division Species Type I Type II Type III ...
Page : Site Section: Science
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Estimating penguin populations using image analysis of colour aerial photography
Abstract: Penguin populations are potentially sensitive indicators of change in the Antarctic and ... sub-Antarctic and are used extensively to monitor changes in the marine ecosystem. Aerial photographic ... colonies, for colonies in areas of complex terrain, or for colonies where ground access is difficult ... study colonies, highlighting various assumptions that contribute to differences in the population ...
Meeting Document : WG-EMM-02/34 Text : Author(s): P.N. Trathan (United Kingdom)
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Testing early life connectivity using otolith chemistry and particle-tracking simulations
stages in the water column substantially influence the direction and extent of connectivity. Used in ... Abstract: We measured the otolith chemistry of adult Scotia Sea icefish (Chaenocephalus aceratus ... compared the chemistry with simulated particle transport using a circulation model. Material laid down in ... chemistry, simulations of the large-scale circulation predicted that particles released at 100-300m depth on ...
Meeting Document : WG-FSA-10/P02 : Author(s): J. Ashford, M. La Mesa, B.A. Fach, C. Jones and I. Everson
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Growth models for D. eleginoides for the Heard Island plateau region (Division 58.5.2) calibrated from otolith-based length at age data and validated using mark-recapture data
with growth increments obtained from mark-recapture data for a large sample of recaptured fish. Mean annual ... -1 while that predicted from the 2-segment linear model for lengths above 557 mm was 37.6 mm yr-1. Mean ... with growth increments obtained from mark-recapture data for a large sample of recaptured fish. Mean annual ... -1 while that predicted from the 2-segment linear model for lengths above 557 mm was 37.6 mm yr-1. Mean ...
Meeting Document : WG-FSA-05/64 Rev. 1 : Author(s): S.G. Candy, T. Lamb, A.J. Constable and R. Williams (Australia)
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Uncertainty in echosounder calibrations
Abstract: Calibration of echo sounders for fish stock assessment are commonly performed using the ... standard sphere method (Johannesson and Mitson, 1983; Simmonds et al., 1984). To determine the accuracy of ... the method, direct measurements of target strength (TS) were made of three standard spheres (Copper ... (Cu)- 23.0 mm and tungsten carbide (WC)- 33.0 mm and 38.1 mm). At the best case range of 5 m, the TS ...
Meeting Document : WG-EMM-96/40 : Author(s): Soule, M.A., Demer, D.A.
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Cooperation with other international organisations
-examine its relationship with a range of organisations providing Observers to ensure that of the exchange ... of information is maximised and the working relationship with the bodies they represent is ... . Commission – Ongoing 6.4.1.2 CCAMLR should heighten the priority of examining the need for, and concluding ... -XXVIII, paragraph 15.24 in relation to CCSBT; (2009)CCAMLR-XXVIII, paragraph 15.25 in respect of WCPFC ...
Page : Site Section: The Organisation
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Effects of orientation on acoustic scattering from Antarctic krill at 120 kHz
. Use of these scattering patterns with orientation data from shipboard studies of E. superba gave mean ... patterns with orientation data from shipboard studies of E. superba gave mean scattering levels ...
Meeting Document : WG-EMM-99/42 : Author(s): D.E. McGehee (USA), R.L. O’Driscoll (New Zealand) and L.V. Martin Traykovski (USA)
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An exploratory analysis of skate speciation using DNA identification techniques
region, were sequenced in specimens of Antarctic skates from the Ross Sea (Pacific Ocean sector), the ... Abstract: Two regions of the mitochondrial DNA, part of the cytochrome b gene and the control ... Islands (Atlantic Ocean sector). Based on the DNA results, the species of Bathyraja referred to as B ... . eatonii in the Ross Sea appears to be a discrete sister species to B. eatonii from the Atlantic sector. In ...
Meeting Document : WG-FSA-04/27 : Author(s): P.J. Smith and S.M. McVeagh (New Zealand)