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Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a
initial stock assessment and adaption of catch limits and tagging rates is presented for new and ... eleginoides) in Division 58.4.3a with catch limit and tag-rate recommendations being made given the assessment ... could be used in the new/exploratory/by-catch fishery context should be able to deal with both tagging ... assessment and adaption of catch limits and tagging rates is presented for new and exploratory stocks in the ... eleginoides) in Division 58.4.3a with catch limit and tag-rate recommendations being made given the ... -structured stock assessments, of differing features and com- plexities, that can deal with the large amount ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Автор(ы): Hillary, R.M
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An assessment of the merits of length and weight measurements of Antarctic krill Euphausia superba
predictors of wet or dry weight in Antarctic krill Euphausia superba Dana are standardised with new data on ... Antarctic krill Euphausia superba Dana are standardised with new data on the relationships of three length ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 371-373 : Автор(ы): Morris D.J., J.L. Watkins, C. Ricketts, F. Buchholz, and J. Priddle
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Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias
, where it occurs, post-release depredation rates are a priority for new assessments that use tag ... priority for new assessments that use tag-recapture data. Due to the complexity of toothfish movements ... features in common with the simplest form of an abundance estimator, known as the Lincoln- Petersen ... with respect to M, R and C. Where these assumptions are not met, parameter estimates may be biased ... the true N by the estimate N̂ (i.e. N̂ N> or N̂ N< ), with potential consequences for any ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Автор(ы): Welsford, D.C. and P.E. Ziegler
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
by the Convention for the Conservation of Antarctic Marine Living Resources. An index of condition ... . Condition indices o f mackerel icefish at South Georgia One using gutted mass is likely to respond with a ... slight time delay and have a lower variance with respect to one using total mass. In this study we ... these only C, could be determined. For this analysis a new length-to-mass relationship was calculated ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Автор(ы): Everson, I. and K.-H. Kock
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Possible effects of different levels of krill fishing on predators – some initial modelling attempts
fluctuations together with preliminary information on adult survival and breeding success patterns for certain ... considering a krill dynamics model incorporating recruitment fluctuations together with preliminary ... Working Group for the CCAMLR Ecosystem Monitoring Program (WG-CEMP) in 1992 (SC-CAMLR, 1992) with ... this survival rate; and B is the krill biomass, with K its median value in the absence of ... CCAMLR, 1993 as modified in SC-CAMLR, 1993a for the Antarctic fur seal), with consequent estimates of ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 79–97 : Автор(ы): Butterworth, D.S. and R.B. Thomson
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Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set
mixing processes of Bransfield Straits water (derived from the Weddell, with further local modification ... the Scotia Front protrudes to the south, perhaps associated with mesoscale structures. The Weddell ... -Scotia Confluence in the Bransfield Straits is associated with abundant krill populations. It is ... Straits water (derived from the Weddell, with further local modification): an intrusive layer of Pacific ... south, perhaps associated with mesoscale structures. The Weddell-Scotia Confluence in the Bransfield ... Straits is associated with abundant krill populations. It is speculated that mixing of Weddell and ... population (Marr, 1962). The Weddell Gyre is a large, wind-driven cyclonic gyre, with a transport of 70 to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 161-184 : Автор(ы): Gordon, A.L.
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Status of krill target strength
high signal-to-noise-ratio conditions, are consistent with the general pattern. Several specific ... -ratio conditions, are consistent with the general pattern. Several specific recommendations are made ... frequences acoustiques et de parametres d'orientation. 1 Institute of Marine Research, PO Box 1870, N 5024 ... involvement in the Biological Investigation of Marine Antarctic Systems and Stocks (BIOMASS) program ... theoretical computations, comparisons are made with data involving individuals, and recommendations are made ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Автор(ы): Foote, K.G., D. Chu and T.K. Stanton
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The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands (Indian Ocean sector of the Southern Ocean)
eleginoides) have been fished in the Kerguelen Islands zone for 20 years, firstly with trawlers and more ... recently with longliners. This is the oldest fishery targeting D. eleginoides in the Indian Ocean sector of ... the Kerguelen Islands zone for 20 years, firstly with trawlers and more recently with longliners ... were undertaken using a Poisson distribution with a logarithmic link. The fit of the data to the ... model that best explains the vari- ability observed is chosen with the calculated quasi Akaike ... normality of the data of each sample was tested graphically with the ‘normal probability plot’. All data ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 1–25 : Автор(ы): Lord, C., G. Duhamel and P. Pruvost
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A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia
with age. Patagonian toothfish (Dissostichus eleginoides) is considered to be a long-lived species ... waters from the New Zealand Exclusive Economic Zone to CCAMLR Subarea 88.1. Document WG-FSA- 99/43 ... with age. Patagonian toothfish (Dissoslicliirs elcginoides) is considered to be a long-lived species ... Patagonian toothfish (Dissosticlzus eleginoides), Hureau and Ozouf-Costaz (1980) used scales with polarised ... Ecomet 3 grinder-polisher, using Mark V Laboratory 3M aluminium oxide polishing paper, and covered with ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Автор(ы): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson
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Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia
with an approximately linear relationship existing between depth and fish length. A statistically ... significant pattern of changing mean length at depth with month was detected, suggesting movement of animals ... both up and down slope at particular times of year. Months with a high mean length at depth are May and ... August, and with a low mean length at depth- April and July. Examination of maturity data suggests that ... Statistics with S-Plus. Second Edition. Springer, New York: 548 pp. Zhivov, V.V. and V.M. Krivoruchko ... , A. Watson, K. Berkieta and J. Pearce Marine Resources Assessment Group Ltd 47 Prince's Gate ... distributed down the shelf slope with an approximately linear relationship existing between depth and fish ... length. A statistically significant pattern of changing mean length at depth with month was detected ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 19–36 : Автор(ы): Agnew, D.J., L. Heaps, C. Jones, A. Watson, K. Berkieta and J. Pearce
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