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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–11
reference model using the selected trips tag data gave a similar, but slightly higher estimate of initial ... biomass than the 2009 base case. Retrospective analysis suggests that this is partly as a result of the ... increased number of vessels in selected data set and partly as a result of the 2010 and 2011 observations ... 78.6–81.3).The estimated yield, using the CCAMLR decision rules, was 3282 t Author(s): S. Mormede, A ...
Meeting Document : WG-FSA-11/42 : Автор(ы): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN SUBAREA 88.2 SSRU E FOR THE YEARS 2002/03 TO 2008/09
model resulted in a higher estimate of initial biomass than the same model for 2006, but the estimated ... initial biomass was very imprecise. The selected trips data set resulted in a more precise estimate of ... from different years. The use of the selected trips with the revised maturity ogive resulted in a ... selectivity equal to the current fishing selectivity. Author(s): A. Dunn and S.M. Hanchet (New Zealand) Title ...
Meeting Document : WG-FSA-09/41 : Автор(ы): A. Dunn and S.M. Hanchet (New Zealand)
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AERIAL SURVEYS OF WEDDELL SEALS DURING 2007-08, WITH NOTES ON THE HISTORY OF AERIAL CENSUSES IN THE ROSS SEA AND RECOMMENDATIONS FOR CONTINUED COUNT EFFORT
place under CCAMLR with respect to the Ross Sea toothfish fishery. In a previous paper submitted to EMM ... variability and the variance that could be expected over a time when the Ross Sea system was without influence ... from industrial fishing. On the basis of this and the previous paper, a Weddell seals monitoring ... program can now be put into effect under CEMP, begun with a one-time survey to identify all important haul ...
Meeting Document : WG-EMM-08/23 : Автор(ы): D. Siniff and D. Ainley (USA)
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Oceanic debris observations in the southern ocean whale sanctuary, from Antarctic Peninsula to the Ross Sea: December 1994 to March 1995
styrofoam fragments. Fishing gear was not a major component of man-made debris. Macrolitter consisted mainly ... of seabird feathers. A very high density (544 per 10nm) of penguin feathers occurred northeast of the ... Ross Sea a single sample contained 31 small dead fish. Natural mesolitter quantities were usually low ... encountered. Biological associations with debris were not common, but included a filamentous green alga and ...
Meeting Document : SC-CAMLR-XVI/BG/29 : Автор(ы): ASOC Observer
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Variation in echosounder calibration with temperature and some possible implications for acoustic surveys of krill biomass
Abstract: Accurate estimation of krill biomass by acoustic techniques is dependant upon a number ... 2.0 °C) than in European waters (7.3 °C), and a similar trend was detected at 38 kHz. If European ... ensure that echo-sounders are calibrated at a location as close as possible to the area in which surveys ... are to be conducted. In addition, the implications of temperature variation across a survey area for ...
Meeting Document : WG-EMM-97/52 : Автор(ы): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.
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Acoustic discrimination of southern ocean zooplankton
the existence of a number of horizontally extensive yet vertically discrete scattering layers in the ... upper 250 m of the water column. These layers were fished with a LonghurstHardy plankton recorder (LHPR ... ) and a multiple-opening 8 m2 rectangular mid-water trawl (RMT8). Analysis of catches suggested that ... each scattering layer was composed predominantly of a single species of either the euphausiids ...
Meeting Document : WG-EMM-97/54 : Автор(ы): Watkins, J.L., Brierley, A.S., Goss, C., Ward, P.
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Modeling the growth dynamics of Antarctic krill
Abstract: A time-dependent, size-structured, bioenergetically-based model was developed to ... examine the growth dynamics of Antarctic krill, Euphausia superba. A system of coupled, ordinary ... processes included in the model were ingestion, assimilation efficiency, a baseline respiration. respiratory ... growth rates; however, winter shrinkage rates were too large. Although the use of a seasonally-varying ...
Meeting Document : WG-EMM-96/68 : Автор(ы): Lascara, C.M., Hofmann, E.E.
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Swimming speed and allocation of time during the dive cycle of Antarctic fur seals
swimming speeds within individuals were between 1 and 2.5 ms-1. This represented a narrower range of speed ... descent and ascent phases of dives with a reduction in speed near the bottom of the dive, when the seals ... were assumed to be feeding on krill. Surface interval increased as a curvilinear function of dive ... predicted by a model (Houston & Carbone, Behav. Ecol., 3, 255-265) which suggested that the metabolic ...
Meeting Document : WG-EMM-95/25 : Автор(ы): Bevan, R.M., Boyd, I.L., Reid, K.
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Preliminary study on the breedings of chinstrap and gentoo penguins at Barton Peninsula, King George Island
Abstract: A preliminary survey on 2 species of penguins, chinstrap and gentoo was made in the ... CCAMLR standard method. A total of 96 nests for chinstraps and 121 nests for gentoos were monitored to ... document breeding chronology and give a measure of breeding success. The nests to be monitored were ... raised successfully to the creche stage was used as a measure of breeding success. Of the whole nests ...
Meeting Document : WG-CEMP-93/23 : Автор(ы): H.-C. Shin and S. Kim (Republic of Korea)
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Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia
Abstract: Foremost in the elucidation of accurate population dynamics parameters in fish is a ... otoliths, calcified tissues which may contain a large amount of biological and ecological information about ... a fish's past history. As part of an effort to study Antarctic fish growth and population ... determined a yearly basis for these species would provide valuable management data. Author(s): R. Radtke ...
Meeting Document : SC-CAMLR-VI/BG/43 : Автор(ы): R. Radtke (USA)
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