Search results
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Time series of Antarctic krill estimates around the South Shetland Islands from 2013 to 2019
during the last 6 years, increased from 20.22 g m-2 in December 2013 to 70.13 g m-2 in February 2019 ... the last 6 years, increased from 20.22 g m-2 in December 2013 to 70.13 g m-2 in February 2019. ... . Distribution of Antarctic krill for the 2013/14 to 2015/16 and the 2017/18 to 2018/19 fishing seasons were ... krill for the 2013/14 to 2015/16 and the 2017/18 to 2018/19 fishing seasons were mapped by the Chinese ...
Meeting Document : SG-ASAM-2019/04 Rev. 1 : Author(s): X. Yu, X. Wang, X. Zhao, J. Zhang, G. Fan, Y. Ying and J. Zhu
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Selectivity and two biomass measures in an age-based assessment of Antarctic krill (Euphausia superba)
Abstract: An integrated, age-structured model was fitted to different combinations of survey data ... measures in an age-based assessment of Antarctic krill (Euphausia superba) Approval: Approved Secretariat ... An integrated, age-structured model was fitted to different combinations of survey data using two ... Selectivity and two biomass measures in an age-based assessment of Antarctic krill (Euphausia ...
Meeting Document : WG-EMM-15/P07 : Author(s): D. Kinzey, G.M. Watters and C.S. Reiss
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Problems in estimating population length at age from commercial catches, the Patagonian toothfish as an example
Abstract: Age based fishery population models require information on size at age of the fished ... population and the commercial catch. Age-length keys can be produced by standardised random sampling ... of the commercial catches. This information does not necessarily reflect the size at age of the fished population ... , a method is developed to estimate size at age of the population using information collected from ...
Meeting Document : WG-FSA-01/17 : Author(s): I. Everson (United Kingdom)
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Trends in Crabeater Seal’s Age at Maturity: an Insight into Antarctic Marine Interaction?
Author(s): Delegations of the UK and USA Title: Trends in Crabeater Seal’s Age at Maturity ... Trends in Crabeater Seal’s Age at Maturity: an Insight into Antarctic Marine Interaction? ...
Meeting Document : SC-CAMLR-II/INF. 03 : Author(s): Delegations of the UK and USA
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Evaluation on the performance of echosounder on a fishing vessel using maximum seabed backscattering
and 2018) collected at a relatively fixed location with bottom depth around 200 m were used to evaluate ... analysis indicated that there was no significant difference among years at both frequencies. Author ... vessel to estimate Antarctic krill biomass. Acoustic data from three surveys (2015, 2016 and 2018 ... indicated that there was no significant difference among years at both frequencies. ...
Meeting Document : SG-ASAM-18/06 : Author(s): X. Wang, X. Yu and X. Zhao
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Review of rattail and skate by-catch and analysis of rattail standardised CPUE from the Ross Sea toothfish fishery in Subarea 88.1 from 1997/98 to 2001/02
raised by the 2001 CCAMLR bycatch subgroup, the processes for recording bycatch in this fishery were ... reviewed and the accuracy of data recording was investigated. Current systems were considered ... of macrourid bycatch in this fishery. The review of data suggest that the toothfish fishery has not yet had ... is suggested. Author(s): R.G. Blackwell and S.M. Hanchet (New Zealand) Title: Review of rattail and skate ...
Meeting Document : WG-FSA-02/40 : Author(s): R.G. Blackwell and S.M. Hanchet (New Zealand)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2002 winter and 2002/03 breeding season
) are reported here. The overall number of entanglements showed a decrease from last year of 55% in winter and 67 ... years, most individuals observed entangled in debris were juveniles (88% of winter and 81% of summer ... observations), the reasons for this are discussed. Of the entanglements where the animal could be sexed, males ... . The overall number of entanglements showed a decrease from last year of 55% in winter and 67%. Severe injuries ...
Meeting Document : SC-CAMLR-XXII/BG/11 : Author(s): Delegation of the United Kingdom
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The diet of the blue-eyed shag, Phalacrocorax atriceps bransfieldensis at the west Antarctic Peninsula
. Fish remains occurred in 100% of the casts and represented 68% by number and 90% by weight of the total ... and it is suggested that they were ingested accidentally. Our results are in general agreement with those published ... in 100% of the casts and represented 68% by number and 90% by weight of the total prey items. From ... accidentally. Our results are in general agreement with those published for other Antarctic localities which ...
Meeting Document : WG-CEMP-93/26 Rev. 1 : Author(s): R. Casaux and E. Barrera-Oro (Argentina)
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Adélie penguins as indicators of the state of the sea-ice in Adélie Land
was characterized by unusual precipitations of rain around the turn of the year that killed massively the already ... weakened young chicks. While we haven’t seen yet the consequences of this “zero year” on the demography ... extended as far as 80 km from the colony but over the entire breeding period. Snow precipitations occurred ... 4°C that sent flows of melting snow through the colony, wiping out nests and eggs. Two “zero years” occurring ...
Meeting Document : WG-EMM-17/01 Rev. 1 : Author(s): Y. Ropert-Coudert, A. Kato and C. Barbraud
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Reassessment of important population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on time series of surveys and fishery data
in the past. An estimate of natural mortality indicates that mortality of young fish, ages 3-8, may be much ... is proposed to estimate age selectivity to the trawl fishery in the region. In conclusion, the overall ... . An estimate of natural mortality indicates that mortality of young fish, ages 3-8, may be much greater than ... to estimate age selectivity to the trawl fishery in the region. In conclusion, the overall analysis shows ...
Meeting Document : WG-FSA-01/73 : Author(s): A.J. Constable, R. Williams, T. Lamb, I.R. Ball and E. van Wijk (Australia)