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Relationship between Antarctic krill (Euphausia superba) variability and westerly fluctuations and ozone depletion in the Antarctic Peninsula area
and the strength of westerlies during 1982–1998. Years with strong westerlies during the austral ... ; = 0.57) and 2-year-old krill (r = 0.69) with a level of significance of 5%. In addition, the strength of ... westerlies also had a strong correlation with chlorophyll a (r = 0.63) and sea ice cover with a 1-year time ... density with hypothesized environmental factors, including strength of westerly winds (westerlies ...
Meeting Document : WG-EMM-99/52 : Автор(ы): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)
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Long term variability in the diet and reproductive performance of penguins at Bird Island, South Georgia
and were the main prey in 12 years, with Champsocephalus gunnari and Lepidonotothen larseni the most ... Abstract: Inter-annual variability in diet during crèche (December to February) over 22 years ... present in 89 % of samples and were the main prey (> 50 % by mass) in 10 years of the study. Antarctic ... patterns of gentoo penguin diet variability with those of macaroni penguins Eudyptes chrysolophus breeding ...
Meeting Document : WG-EMM-17/P02 : Автор(ы): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan
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A RISK ASSESSMENT TO ADVISE ON STRATEGIES FOR SUBDIVIDING A PRECAUTIONARY CATCH LIMIT AMONG SMALL-SCALE MANAGEMENT UNITS DURING STAGE 1 OF THE STAGED DEVELOPMENT OF THE KRILL FISHERY IN SUBAREAS 48.1, 48.2, AND 48.3.
level. Relative to Fishing Options 2 and 3, fishery performance under Option 4 is also poor, with ... . (2008) to assess the risks and tradeoffs associated with various management strategies for subdividing ... selecting among Fishing Options 2, 3, and 4 are tradeoffs between the risks to predator populations and ... of Fishing Option 3 will also require substantive fishery operations in pelagic SSMUs, but, if krill ...
Meeting Document : WG-EMM-08/30 : Автор(ы): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)
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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 : Автор(ы): 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 : Автор(ы): 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 : Автор(ы): Delegation of New Zealand
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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 : Автор(ы): J. Watkins and S. Fielding (United Kingdom)
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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 : Автор(ы): C.A. Moreno (Chile)
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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 : Автор(ы): R. Pitman, H. Fearnbach and J.W. Durban
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Estimation of tag-loss rates for tagged fish in the Patagonian toothfish (Dissostichus eleginoides) fisheries at Heard Island and McDonald Islands in Division 58.5.2
fishery, 99.3% of all double-tagged fish retain at least one tag after one year, and 80.2% after ten years ... , with longline-caught and recaptured fish losing their tags quicker than trawl-caught and recaptured ... fish. With an initial tag-loss proportion of 2.8% and ongoing tag-loss rate of 0.056 in the longline ... at liberty of 6 years, as l = 0.014 for longline and l = 0.007 for trawl. However, this single tag ...
Meeting Document : WG-FSA-17/21 : Автор(ы): P. Ziegler
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