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Commission pour la conservation de la faune et la flore marines de l'Antarctique

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  1. THE ASAM 2010 ASSESSMENT OF KRILL BIOMASS FOR AREA 48 FROM THE SCOTIA SEA CCAMLR 2000 SYNOPTIC SURVEY

    the CCAMLR 2000 synoptic survey data to generate a quality checked krill biomass for area 48 following ... estimated from acoustic and net data collected during the international multi-ship krill biomass in the ... Scotia Sea in 2000 to be 60.3 million metric tonnes. This report aims to document the parameters utilised ... the acoustic protocol identified in ASAM 2009. The total biomass of krill in the Scotia Sea was ...

    Meeting Document : WG-EMM-11/20 : Auteur(s): S. Fielding and J. Watkins (UK) and ASAM participants: A. Cossio, C. Reiss and G. Watters (USA), L. Calise and G. Skaret (Norway), Y. Takao (Japan), X. Zhao (People’s Republic of China), D. Agnew (UK) and D. Ramm and K. Reid (CCAMLR Secretariat)

  2. Development of methods relevant to feedback management (FBM) for the krill fishery

    . Thus, data supporting FBM as an integral part of the broader management strategies of the krill ... presented in SC-CAMLR XXXVI/BG20 requires acoustic data to be collected, processed and reported continuously ... Protected Area (MPA) development in CCAMLR Planning Domain 1 encompasses the major krill fishing grounds ... fisheries within Domain 1 are critical if the fishery is to be managed by an empirical understanding of ...

    Meeting Document : WG-EMM-18/08 : Auteur(s): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A. Klevjer, R. Øyerhamn, C.A. Cárdenas, J. Arata, A. Makhado, C. Reiss and O.A. Bergstad

  3. COMPARING CEMP INDICES TO INFORM FEEDBACK MANAGEMENT OF THE ANTARCTIC KRILL FISHERY

    illustrate sensitivity to the choice of data and impact, and to suggest that useful comparisons can be made ... in treatment data or minor shifts in the mean of treatment data resulted in readily identifiable ... yr) time horizon. Such sensitivity may prove useful for the detection of impacts in monitoring data ... Abstract:  Despite uncertainties about interactions between ecosystems and fisheries, the ability ...

    Meeting Document : WG-EMM-11/25 : Auteur(s): J.T. Hinke and G.M. Watters (USA)

  4. Density estimation of Antarctic krill (Euphausia superba) around South Shetland Island and Elephant Island (Subarea 48.1) using two frequencies with 38 and 120 kHz

    in 2019. Krill were collected by the commercial midwater trawl fishing vessel. The data were ... acoustics survey. Acoustic data were collected using two frequencies with 38 and 120 kHz from March 8 to 15 ... Document Release Consent:  No Delegation responsibility for releasing documents:  Korea, Republic of ... Abstract:  The density of Antarctic krill swarm inhabiting the Subarea 48.1, which includes the ...

    Meeting Document : SG-ASAM-2019/03 Rev. 1 : Auteur(s): S. Choi, S. Chung, I. Han, W. Oh, D. An and K. Lee

  5. Time series of Antarctic krill estimates around the South Shetland Islands from 2013 to 2019

    Subarea 48.1 is submitted with accompanying description of the acoustic survey and data analysis ... data were collected with ship-mounted Simrad EK60 scientific echosounder system. A swarm-based Echoview ... File:  asam-2019-04r1.docx Approval:  Approved Secretariat Workflow Status:  Content Approved Document ... Abstract:  Metadata for krill biomass time series obtained by Chinese krill fishing vessel in ...

    Meeting Document : SG-ASAM-2019/04 Rev. 1 : Auteur(s): X. Yu, X. Wang, X. Zhao, J. Zhang, G. Fan, Y. Ying and J. Zhu

  6. Downward adjustments to local catch limits for the krill fishery in Subarea 48.1

    ) feasible methods to estimate the leading indicator from monitoring data, and 4) a decision rule that can be ... that was fitted to mark-recapture data on Adélie penguins.  Our results show that resilient populations ... multiple sites in Subarea 48.1.  We developed a spline-based method to analyze the photographic data ... with Article II of the Convention.  Retrospective application of the decision rule to historical data ...

    Meeting Document : WG-EMM-16/46 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries

  7. Revisiting krill ageing method using eyestalk cuticles

    Secretariat Workflow Status:  Content Approved Document Release Consent:  No Delegation responsibility for ... for improving the precautionary management of krill fisheries. The only method to date that has shown ... Abstract:  The development of a consistent and reproducible ageing method for krill is critical ... promise in the determination of the absolute age of krill is that of Kilada et al. (2017), which involves ...

    Meeting Document : WG-EMM-2019/45 : Auteur(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada, C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda

  8. A simple approach for calculating the potential yield of krill from biomass survey results

    Paper Title:  A simple approach for calculating the potential yield of krill from biomass survey ... MB 0 for a krill fishery in which both the fishery and krill growth are seasonal. The criterion used ... for the calculations is that the probability that the krill spawning biomass drops below 20% of its ... (a + t) = .e .. [ 1- e-{3(a+l)] O::;t::;l/o (2) Rosenberg et al.'s (op.cit.) fit to data ... chosen to complete this "base case". [Some data-based case could be made for each of these choices; for ... potential yield of fish stocks. FAO Fish. Bioi. Tech. Pap. 242: 1-47. BUTTERWORTH, D.S. 1989. A ... WG-KRILL-91/24 A SIMPLE APPROACH FOR CALCULATING THE ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Auteur(s): Butterworth, D.S., A.E. Punt and M. Basson

  9. Background information to support development of a feedback management strategy for the krill fishery in Subarea 48.1

    Abstract:  Here we compile eight vignettes that, together, provide the background data and ... distributions using data from a large telemetry study involving multiple species of birds and mammals during ... information needed to support development of a feedback management strategy for the krill fishery in Subarea ... negatively impacting the krill fishery while simultaneously mitigating risks to krill-dependent predators. We ...

    Meeting Document : WG-EMM-16/45 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries

  10. Review of length-weight relationships for Antarctic krill

    Paper Title:  Review of length-weight relationships for Antarctic krill Abstract / Description ... :  Length-weight relationships for krill, Euphausia superba (as well as relationships for other Antarctic ... Tables 3 and 4 contain wet weight data. In most cases krill were separated according to sex. In their ... of krill. Morris et al. (1988) applied various published length-weight relationships to data ... presenta una lista de las relaciones talla-peso para el kril, Euphausia superba (as! como las relaciones ... hydroacoustic surveys are expressed as wet weight and are derived from length frequency data. Physiological ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 145–155 : Auteur(s): Siegel, V.

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