Résultats de la recherche
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A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data
hence a multi-year mark-recapture tagging program was initiated by New Zealand fishing vessels in 2001 ... model was developed for Antarctic toothfish in the Ross Sea region that incorporates multi-year release ... of tagged fish and subsequent multi-year data of recapture of tagged fish in conjunction with fishery ... Paper Title: A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross ... . _______________________________________________________________ 1 The CCAMLR fishing season starts on 1 December and ends on 30 November in the following year ... Antarctic toothfish in the Ross Sea region that incorporates multi-year release of tagged fish and ... subsequent multi-year data of recapture of tagged fish in conjunction with fishery catch-at-age data. This ... catch for Antarctic toothfish in the RSR, by fishery, as well as the catch limit in each year, is ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 39–62 : Auteur(s): Mormede, S., A. Dunn and S.M. Hanchet
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Intra-annual variability in the density of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ estimates of krill density
g m –2, SD = 24.3), but had risen substantially by summer in each year (mean = 89.5 g m –2, SD ... to the perceived between-year variation in krill density arising from previous summer surveys in the ... consistently over all three years, was detected. Krill densities in winter were predominantly low (mean = 18.7 ... the regression-predicted within-year variation. Years that stand out for markedly low krill density ... et al. 30 summer) in the light of repeated observations of within-year changes to address the ... a ‘low’ or ‘high’ krill year. In general terms, this was around ±35 g m–2 in summer and ±20 g m–2 ... –2, SD = 24.3), but had risen substantially by summer in each year (mean = 89.5 g m–2, SD = 64.2). A ... argued that this is indicative of year-to-year variation in krill density at the island. However, there ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 27–41 : Auteur(s): Saunders, R.A., A.S. Brierley, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein and D.G. Bone
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CCAMLR’S 3-YEAR CHALLENGE: DELIVERING A COMPREHENSIVE AND REPRESENTATIVE PROTECTED AREAS NETWORK IN THE SOUTHERN OCEAN
Author(s): Submitted by ASOC Title: CCAMLR’S 3-YEAR CHALLENGE: DELIVERING A COMPREHENSIVE AND ... REPRESENTATIVE PROTECTED AREAS NETWORK IN THE SOUTHERN OCEAN Approval: Approved Secretariat Workflow Status ...
Meeting Document : CCAMLR-XXVIII/BG/30 : Auteur(s): Submitted by ASOC
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Krill biomass estimates for two survey boxes to the north east and north-west of South Georgia in January 1996: the beginning of a five-year monitoring program
the first in a new five-year British Antarctic Survey programme initiated in part to monitor inter ... Abstract: Acoustic surveys were carried out in January 1996 within two 100 x 80 km boxes located ... -annual variability in the abundance of the Antarctic krill Euphausia superba in the South Georgia region ... parallel transects, 80 km in length, running perpendicular to the major direction of shelf-break in the ...
Meeting Document : WG-EMM-96/18 : Auteur(s): Watkins, J.L., Murray, A.W.A., Brierley, A.S.
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Progress report for the third year of the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2013–2015.
Abstract: A multi-year research plan as outlined in CM 41-04 (2012, 2013 & 2014) was ... : Progress report for the third year of the research fishery for Dissostichus spp. in Subarea 48.6 being ... participated in the research project in each of the three fishing seasons and the progress achieved during the ... . mawsoni, respectively were recaptured. It is encouraging that 10 tagged D. mawsoni have been recaptured in ...
Meeting Document : WG-SAM-15/50 : Auteur(s): R.W. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)
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Indicators of krill flux at various spatial-temporal based on the data of multi-year research carried out in the Scotia Sea. Comments on krill fishery management
flow at various spatial-temporal scales in the Scotia Sea. According the discussion at WG-EMM-2018 ... understanding of krill biomass dynamic. It has been shown that the formation of transport of krill in the ... Weddell Sea. The data obtained demonstrate that the dynamics of krill biomass in a given area is more ... . Shnar Title: Indicators of krill flux at various spatial-temporal based on the data of multi-year ...
Meeting Document : WG-EMM-2019/58 : Auteur(s): S. Kasatkina and V. Shnar
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Revised progress report for the fourth year of the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa
Abstract: A multi-year research plan as outlined in CM 41-04 (2012, 2013, 2014) was initiated in ... Title: Revised progress report for the fourth year of the research fishery for Dissostichus spp. in ... in the research project in each of the three fishing seasons and the progress achieved during the ... first 3.5 years is reported. The emphasis of the progress report is on block 486_2, since more tag ...
Meeting Document : WG-FSA-16/56 : Auteur(s): S. Somhlaba, R. Leslie, K. Taki, T. Ichii and T. Namba
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Among-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
Southern Ocean over a span of 19 yr to document among-year variation in krill growth during the austral ... estimates of among-year variation in krill growth. We estimate very high among-year variation in growth ... (annual estimates for a 30 mm krill in the Elephant Island region ranged from 0.00 to0.17 mm d −1; mean ... . Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA) Title: Among-year variation in growth of ...
Meeting Document : WG-EMM-13/P01 : Auteur(s): A.O. Shelton, D. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA)
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Summary of a three year mark-recapture experiment to estimate population size of Antarctic toothfish (Dissostichus mawsoni) in Southern Area of Statistical Subarea 48.4
Abstract: A three-year tagging experiment was initiated by the UK in 2008/09 fishing season with ... decline in catch rates over the three year study, more so between 2010 and 2011. A total of 476 D. mawsoni ... mawsoni) in South of Statistical Subarea 48.4. This paper presents the results for D. mawsoni. Fishing ... vessel between 2008/09 and 2009/10, but the spatial coverage of fishing effort was reduced in 2010/11 due ...
Meeting Document : WG-FSA-11/31 Rev. 2 : Auteur(s): R.C. Wakeford, J. Roberts and R.E. Mitchell (United Kingdom)
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Concordance of inter-annual fluctuations in densities of krill around South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia Sea
both SG and El. There was no apparent lag in changes in abundance at each site, and ranked between-year ... Abstract: Acoustic estimates of the densities of Antarctic krill, Euphausia superba, in areas ... simply have been a function of differences in survey and data analysis techniques used at each site. More ... interestingly, the magnitudes of abundance and between-year gradients of change of abundance at each site were ...
Meeting Document : WS-AREA 48-98/11 : Auteur(s): A.S. Brierley (UK), D.A. Demer, R.P. Hewitt (USA) and J.L. Watkins (UK)