Résultats de la recherche

1. A hypothetical life cycle for Antarctic toothfish Dissostichus mawsoni in Antarctic waters of CCAMLR Statistical Area 88

   eastwards with the eastern Ross Sea gyre settling out along the continental slope and shelf to the east of ... Abstract:  Aspects of the reproduction, size distribution, and movements of Antarctic toothfish ... and timing of spawning, and the probable early life history characteristics of toothfish, we ... investigated models that mimic the drift of eggs and larvae over a 6–24 month period using an oceanic ...

   Meeting Document : WG-FSA-07/35 : Auteur(s): S.M. Hanchet, G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams (New Zealand)

2. An assessment of toothfish in Subarea 48.3 using CASAL

   Paper Title:  An assessment of toothfish in Subarea 48.3 using CASAL Abstract / Description:  This ... paper presents an assessment of the stock of toothfish around South Georgia (Subarea 48.3) using the ... CASAL stock assessment software (Bull et al., 2005). Detailed attention is given to the incorporation of ... as much of the available tuning data as possible, as well as a whole range of assessment ... previously described. The probability of a single tag loss was esti- mated using the subset of recaptured ... fish that were originally double-tagged. This confirmed previous estimates of tag loss of 0.06 yr–1 ... Assessment of toothfish in subAreA 48.3 using CAsAL R.M. Hillary, G.P. Kirkwood and D.J. Agnew Division of ... Biology Faculty of Natural Sciences Imperial College London SW7 1NA United Kingdom Email ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 65–95 : Auteur(s): Hillary, R.M., G.P. Kirkwood and D.J. Agnew

3. A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3

   Paper Title:  A statistical method for estimating the level of IUU fishing: application to CCAMLR ... , unregulated and unreported (IUU) catches of fish and by-catch of birds. It utilises high quality, well ... -documented fisheries protection vessel (FPV) cruise data. The method takes explicit account of both ‘seen ... ’ and ‘unseen’ IUU fishing by using a simulation model to arrive at statistically rigorous estimates of ... - narios of assumed distributions of IUU trip length. Estimates of p derived from these runs (i.e. for ... . 12 (2005): 119–141 119 A STATISTICAL METHOD FOR ESTIMATING THE LEVEL OF IUU FISHING: APPLICATION ... TO CCAMLR SUBAREA 48.3 D.J. Agnew and G.P. Kirkwood Division of Biology, Faculty of Life Sciences ... paper describes a new method for estimating illegal, unregulated and unreported (IUU) catches of fi sh ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Auteur(s): Agnew, D.J. and G.P. Kirkwood

4. Schedule of Conservation Measures in Force 1998/1999

   Conservation Measures in the 1998/99 season Subareas 48.5, 88.2, 88.3 Division 58.4.1 (east of 90°E ... at least three hours before sunrise (to reduce loss of bait to/catches of white-chinned petrels). 5 ... SCHEDULE OF CONSERVATION MEASURES IN FORCE ... ) This schedule lists Conservation Measures adopted by the Commission in accordance with Article IX of ...

   Document : Site Section: Publications

5. Detection and quantitative estimation of krill concentrations by hydroacoustic instruments

   Paper Title:  Detection and quantitative estimation of krill concentrations by hydroacoustic ... instruments Abstract / Description:  The limited capabilities of existing hydroacoustic instruments in ... detecting dispersed and surface concentrations of krill lead to considerable underestimates of krill biomass ... in areas surveyed. The task of detecting surface concentrations of krill can be solved with the help ... ESTIMATION OF KRILL CONCENTRATIONS BY HYDROACOUSTIC INSTRUMENTS K.I. Yudanov (U.S.S.R.) Abstract The ... limited capabilities of existing hydroacoustic instruments in detecting dispersed and surface ... concentrations of krill lead to considerable underestimates of krill biomass in areas surveyed. The task of ... detecting surface concentrations of krill can be solved with the help of towed acoustic antennae. The ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 123-139 : Auteur(s): Yudanov, K.I.

6. Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution

   Paper Title:  Estimation of effective sample size for catch-at-age and catch-at-length data using ... simulated data from the Dirichlet-multinomial distribution Abstract / Description:  The incorporation of ... ‘effective sample size’ (ESS) in integrated assessments is an approximate but simple way of modelling the ... distribution of catch-at-age or catch-at-length frequencies using a multinomial likelihood when there is extra ... distribution of π given by equation 3) and is given by Mosimann (1962, equation 7) and Johnson and Kotz (1969 ... Estimation of EffEctivE samplE sizE for catch-at-agE and catch-at-lEngth data using simulatEd data from ... thE dirichlEt-multinomial distribution S.G. Candy Department of the Environment, Water, Heritage ... Email – steve.candy@aad.gov.au Abstract The incorporation of ‘effective sample size’ (ESS) in ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Auteur(s): Candy, S.G

7. Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Subarea 48.6

   . mawsoni in 2011, in order to maximize the use of tagged fish.  We propose the extension of the east ... last WG-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each block in ... such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ...

   Meeting Document : WG-FSA-13/37 : Auteur(s): Delegation of Japan

8. A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia

   Paper Title:  A comparison between otoliths and scales for use in estimating the age of ... understanding the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ... whose age has been estimated using both scales and otoliths. We estimated the age of D. eleginoides ... to a more conservative management strategy. However the loss of wholesale value due to under ... BETWEEN OTOLITHS AND SCALES FOR USE IN ESTIMATING THE AGE OF DISSOSTICHUS ELEGINOlDES FROM SOUTH ... the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Auteur(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson

9. Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region

   Paper Title:  Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes ... identification of a new species of Southern Ocean grenadier, Macrourus caml, which had hitherto been identified ... as M. whitsoni. The first comparison of the distribution and ecology of the two species of Macrourus ... in the Ross Sea region is presented. The number of rays in the left pelvic fin and number of rows of ... and East strata, with a spatial distribution similar to that of other samples used in this study ... shallower depths on the continental slope, and deeper depths in the east, so effects of location and depth ... between males and females of both species were usually <10%. Macrou rus whitsoni outside the East ... East stratum seemed generally more developed at the time of the study than gonads of M. whitsoni in ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Auteur(s): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown

10. Biomass of Antarctic krill around South Shetland using 2-dB difference method in April 2016

    operated by Norway, Korea, and Japan, etc. Major fishing area is the surroundings of South Sheltland where ... it is surrounded by Darke Passage in North, Weddle Sea in East, and Bransfield Strait in South ... . CCAMLR (Convention for the Conservation of Antarctic Marine Living Resources) is currently implementing a ... utilize Krill resources continuously. This study is aimed to estimate the density and the biomass of Krill ...

    Meeting Document : WG-EMM-16/60 : Auteur(s): Delegation of the Republic of Korea

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