Résultats de la recherche
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Acoustic survey design to estimate krill biomass in Subareas 48.1, 48.2 and 48.3
Abstract: The Scientific Committee has requested advice on the feasibility of conducting a ... synoptic survey of krill biomass in Statistical Area 48. Example calculations are presented for estimating ... the amount of survey effort required to achieve a target level of precision using a stratified random ... 1.25 ship-months of survey effort can provide an estimate of krill biomass in Subareas 48.1, 48. 2 and ...
Meeting Document : WG-EMM-95/71 : Auteur(s): Hewitt, R.P., Watters, G.
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Male krill grow fast and die young
Abstract: The size-differentiated sex ratio (proportion of males: POM) of Antarctic krill was ... southwest Atlantic sector, and from the krill fishery in the Southern Ocean. The percentage of males in size ... classes of adult krill was generally high in krill of 30-35 mm total length, always low in 38-42 mm krill ... for males when compared to females. These results suggest that the numbers of males should decline ...
Meeting Document : WG-EMM-07/P6 : Auteur(s): S. Kawaguchi, L.A. Finley, S. Jarman, S.G. Candy (Australia), R.M. Ross, L.B. Quetin (USA), V. Siegel (Germany), W. Trivelpiece (USA), M. Naganobu (Japan) and S. Nicol (Australia)
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Sounds like more krill
Abstract: Antarctic krill, Euphausia superba, comprise the foundation of the food-web in the ... Southern Ocean and are the target of a large fishery. Recently, the total abundance of krill in the Scotia ... Conservation of Antarctic Marine Living Resources (CCAMLR) to revise the precautionary catch level for krill in ... energy attributed to krill, scaled by the Greene et al. model of krill acoustical reflectivity or target ...
Meeting Document : WG-EMM-04/41 : Auteur(s): D.A. Demer and S.G. Conti (USA)
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Address given to citizen’s marine summit, Japan By Dr I. Everson
Abstract: The main aims of CCAMLR are reviewed in an essay which discusses the advances in the ... effectiveness of harvesting, arising from developments in science and technology in comparison with the ... requirements of science to provide information for rational management. It is concluded that co-operation is ... essential between fishermen and scientists to ensure the provision of the data needed to test hypotheses ...
Meeting Document : CCAMLR-XII/BG/11 : Auteur(s): Delegation of United Kingdom
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CCAMLR Science – Possibilités pour l'avenir
Abstract: CCAMLR Science was launched over 20 years ago with the aim of providing mechanism to ... publicise the science done in CCAMLR and to raise the profile of CCAMLR within the international scientific ... community. A reduction in the number of papers submitted to, and published in the journal, has prompted a ... review of options for the future of CCAMLR Science. In particular, it may be timely to review the role ...
Meeting Document : SC-CAMLR-XXXIV/07 : Auteur(s): CCAMLR Secretariat
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Report on the research for Dissostichus spp. in Subarea 48.2 by the Ukraine in 2015–2019
Abstract: The five years of survey and observations of Dissostichus spp. in statistical subarea ... of the Scientific Committee and Commission. Data on the distribution of Antarctic toothfish and by ... -catch fish, biological characteristics of Antarctic and Patagonian toothfish are presented. Biomass of ... ): Delegation of Ukraine Title: Report on the research for Dissostichus spp. in Subarea 48.2 by the Ukraine in ...
Meeting Document : WG-FSA-2019/51 : Auteur(s): Delegation of Ukraine
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A noise removal algorithm for acoustic data with strong interference based on post-processing techniques
Abstract: The use of fishing-vessel-based acoustic data has been recognized by SC-CAMLR as an ... important way to estimate the distribution and relative abundance of Antarctic krill (Euphausia superba ... ), yet the quality and even the utility of the data may be seriously degraded by interferences due to the ... lack of synchronization device for the acoustic instruments equipped on some of the vessels. A simple ...
Meeting Document : SG-ASAM-15/02 : Auteur(s): X. Wang, X. Zhao and J. Zhang (People’s Republic of China)
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VARIABILITY IN KRILL BIOMASS LINKS HARVESTING AND CLIMATE WARMING TO PENGUIN POPULATION CHANGES IN ANTARCTICA
populations, many of which were nearly extirpated by humans. This region is also among the fastest-warming ... . One hypothesis guiding ecological interpretations of changes in top predator populations in this ... declines in “ice-loving” species by decreasing their winter habitat, while populations of “ice-avoiding ... ” species have increased. However, 30 y of field studies and recent surveys of penguins throughout the WAP ...
Meeting Document : WG-EMM-11/P1 : Auteur(s): W.Z. Trivelpiece, J.T. Hinke, A.K. Miller, C.S. Reiss, S.G. Trivelpiece and G.M. Watters
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The US commercial krill fishery in Area 48: development, fishing patterns, and decision making
decision making processes involved in harvesting krill by the U.S. fishery. Because the Captain of the Top ... north of South Georgia; in 2001, all fishing was conducted off the South Shetland Islands and Bransfield ... Strait. In 2002, fishing operations were carried out off the Antarctic Peninsula, west of Elephant Island ... ; and northwest of the South Orkney Islands. Information on set locations, effort, yield, catch rates ...
Meeting Document : WG-EMM-02/18 : Auteur(s): C.D. Jones and M. Hull (USA)
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Draft proposal for multi-Member research on the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) from 2018/19 to 2021/22
research progress including evaluation of standard approaches to identify precautionary catch limits (WG ... for this fishery. Furthermore, examination of bycatch data and underwater video footage have not led ... to the identification of vulnerable marine ecosystem (VME) indicator species (Maschette et al. 2017 ... succeeding plan has been designed as a 4-year plan, based on the low risk profile of this fishery and to ...
Meeting Document : WG-SAM-18/17 : Auteur(s): Delegations of Australia, France, Japan, Republic of Korea and Spain