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Estimating toothfish biomass in Subarea 48.3 using local depletions
means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ... . Applying a Leslie method we derived toothfish densities in these areas which were linearly correlated with ... the initial CPUE experienced by the fishing vessels. Using this correlation, combined with the average ... CPUE over the four years and multiplying by the total fishable area in Subarea 48.3 we arrived at an ...
Meeting Document : WG-FSA-SAM-04/18 : Autor(es): Pearce, J., Agnew, D.
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Modelling growth of Antarctic krill: a new approach to describing the growth trajectory
from direct measurements of individual pre- and post-moult krill sampled from the wild with a model of ... temperature-dependent intermoult period. Using summer and early autumn data for juveniles and males sampled ...
Meeting Document : WG-EMM-05/27 : Autor(es): S. Candy and S. Kawaguchi (Australia)
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APPLICATION TO UNDERTAKE WINTER SCIENTIFIC RESEARCH IN CCAMLR SUBAREA 88.1 (SSRUS 88.1B, 88.1C AND 88.1G) IN THE 2008/09 SEASON
collect information that should assist in the understanding of the early life history and reproduction of ... accordance with Conservation Measures 24-01, 33-03, 41-01 and 41-09. Author(s): Delegation of New Zealand ... in CCAMLR SSRUs 88.1B, 88.1C and, ice permitting, 88.1G in 2008/09, as the first in a three year time ...
Meeting Document : WG-FSA-08/62 : Autor(es): Delegation of New Zealand
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
from land-based predators directly with automated on-board data collection systems it will be possible ... with acoustic surveys of krill). In a year such as 1994, when krill length at South Georgia changed ... simultaneous length-frequency data. By integrating data from land-based predators directly with automated on ... with research cruises. There is increasing evidence that both the population structure and ... , yet krill availability measured later in the breeding season may not appear anomalously low. Given ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Autor(es): Reid, K. and A.S. Brierley
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Informe de pesquería: Pesquería exploratoria de Dissostichus spp. en la División 58.4.3a
. Stocks and areas......................................................................... 3 3 ... . Parameter estimation ................................................................... 3 3.1 ... Observations........................................................................ 3 3.2 Fixed parameter ... . in each of these new divisions, outside areas of national jurisdiction. 3. In 2006/07, the ...
Document : Site Section: Publications
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Net-based verification of acoustic techniques used to identify Antarctic krill
' using an SDWBA-derived range for Sv120-3, (iii) '2 freq 2-16'- with an Sv120-38 range ... of 2-16 dB and (iv) '2 freq 2-12'-with an Sv120-38 range of 2-12 dB The '3 freq model ... orientation distributions for the two cruises were estimated with the SDWBA model, with cruise specific ... orientation distributions applied the performance of the '3 freq model' was comparable with the two ...
Meeting Document : SG-ASAM-09/04 : Autor(es): J. Watkins and S. Fielding (United Kingdom)
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Informe de pesquería: Pesquería exploratoria de Dissostichus spp. en la Subárea 48.6
......................................................................... 3 3. Parameter estimation ................................................................... 3 ... 3.1 Observations........................................................................ 3 3.2 ... South African flagged vessels using longlines only, and no more than one vessel per country was ... fishing season was from 1 December 2007 to 30 November 2008. 3. In recent seasons, the Japanese-flagged ...
Document : Site Section: Publications
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Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae) off the Chilean coast
fisheries of the patagonian toothfish Dissostichus eleginoides related with the selectivity of the type and ... . The size frequency of the population collected with straight hooks No3 and 4 are not significatively ... different, being No 3 near 31 % more efficient than No 4. Different bait do not present significative ... as the number of the straight hook increases (for example from 4 to 3) or when they change from ...
Meeting Document : WG-FSA-91/11 : Autor(es): C.A. Moreno (Chile)
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Informe de pesquería: Pesca exploratoria de Dissostichus spp. en la división 58.4.3b
......................................................................... 3 3. Parameter estimation ................................................................... 3 ... 3.1 Observations........................................................................ 3 3.2 ... . in each of these new divisions, outside areas of national jurisdiction. 3. In 2005/06, the ... , Spanish and Uruguayan vessels using longlines only, and no more than one vessel per country was permitted ...
Document : Site Section: Publications
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Population status of Ross Sea killer whales (Orcinus orca, Type C) in McMurdo Sound, Antarctica, based on photo-identification studies
175 there annually. Despite high turnover of different whales between years, we used a Bayesian mark ... -recapture approach to identify a seasonal ‘resident’ population with an average annual abundance of 55 ... individuals (95% probability = 44-68) that exhibited strong inter- and intra-annual site fidelity, with ... individuals resighted over 2-14 years. Contrary to recent reports that commercial overfishing of Antarctic ...
Meeting Document : WG-EMM-16/50 : Autor(es): R. Pitman, H. Fearnbach and J.W. Durban