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1. Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys

   Paper Title:  Prey monitoring surveys: a discussion of the characteristics necessary in prey ... . Three of the parameters (foraging trip - 379 - duration, chick fledging weight and chick diet ... foraging trip duration a reasonable estimate can be made of the maximum radius of the 'foraging circle ... DISCUSSION OF THE CHARACTERISTICS NECESSARY IN PREY SURVEYS I. Everson (United Kingdom) Abstract The ... >KHble cxeMhl HX INTRODUCTION - 378 - PREY MONITORING SURVEYS. A DISCUSSION OF THE ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Автор(ы): Everson, I.

2. Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends

   Paper Title:  Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined ... with various codends Abstract / Description:  Selectivity properties of single and doubler-layer twine ... codends (mesh size 120 mm) and single-layer tape codends with a mesh size of 60 and 100 mm were determined ... . It was found that the selectivity properties of twine codends are unsatisfactory in the case of ... liner was placed on the upper part of the codend, reaching down to the middle of the codend side walls ... . The codend bottom was deprived of its selective properties up to the middle of side walls by placing ... selection. In fact, they constituted the middle and final part of a typical selectivity ogive, which was ... - 1 - SC-CAMLR-V/BG/29 PRELIMINARY APPRAISAL OF ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Автор(ы): Zaucha, J.

3. 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 ... for the calculations is that the probability that the krill spawning biomass drops below 20% of its ... median pre-exploitation level over a 20 year period of harvesting should equal 10%. The value of, λ ... depends strongly on the value of M (natural mortality) and σ R (recruitment variability), and also on the ... estimate Bo which is to be used in equation (1) is considered to be made in the middle of the season (Le ... .3) In the middle of the season during which the krin grow, their mass-at-age (w .) is then: wa ... POTENTIAL YIELD OF KRILL FROM BIOMASS SURVEY RESULTS D.S. Butterworth* , A.B. Punt* and M. Basson ... is that the probability that the krill spawning biomass drops below 20% of its median pre ...

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

4. Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)

   Paper Title:  Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides) Abstract ... / Description:  Analyses of size at sexual maturity were undertaken on samples of Patagonian toothfish ... proportion, 25 to 43%, of sexually mature fish were not coming into spawning condition. This introduces a ... bias leading to the overestimation L m50 of  calculated by conventional methods. Further analysis ... middle of the curve. (This point was highlighted as a warning indicator by the Genstat program during ... data in the middle of the curve for the July period. The results from the PROBITANALYSIS procedure ... MATURITY OF PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) I. Everson and A. Murray British Antarctic ... Survey High Cross, Madingley Road Cambridge CB3 OET, United Kingdom Abstract Analyses of size at ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Автор(ы): Everson, I. and A.W. Murray

5. Target strengths of Antarctic krill (Euphausia superba)

   Paper Title:  Target strengths of Antarctic krill (Euphausia superba) Abstract / Description:  The ... Mean Volume Backscattering Strength of encaged aggregations of swimming krill have been measured at 38 ... and Nakken 1972, Johannesson and Mitson 1983), knowledge of the target strength is essential. The ... : 69 pp. FORBES, S.T. and O. NAKKEN. 1972. Manual of methods for fisheries resource survey and ... SC-CAMLR-VII/BG/30 TARGET STRENGTHS OF ANTARCTIC KRILL ... Backscattering Strength of encaged aggregations of swimming krill have been measured at 38 and 120 kHz in a ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 265–279 : Автор(ы): Everson, I., D.G. Bone, J.L. Watkins and K.G. Foote

6. The utilization of seabird censuses for krill monitoring

   Paper Title:  The utilization of seabird censuses for krill monitoring Abstract / Description ... :  The possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ... Ocean is explored. No variation source directly linked with krill was identified by means of ... correspondence analysis. Contour plotting, profile analysis and tests for equality of covariance matrices proved ... . References Andrews, D.F., 1972. Plots of high-dimensional data. Biometrics vol. 28, pp 125-36. Geisser ... - 393 - THE UTILIZATION OF SEABIRD CENSUSES FOR KRILL ... possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ocean is ... explored. No variation source directly linked with krill was identified by means of correspondence ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 393-425 : Автор(ы): Marschoff, E.R., J.G. Visbeek and L.R. Fontana

7. Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database

   Paper Title:  Analysis of albatross and petrel distribution within the CCAMLR Convention Area ... successful measures to reduce the incidental mortality of seabirds in most of the fisheries within its ... jurisdiction, and has done so through area-specific risk assessments linked to mandatory use of measures to ... , unreported and unregulated (IUU) fishing. This paper presents an analysis of the distribution of albatrosses ... AnAlysis of AlbAtross And petrel distribution within the CCAMlr Convention AreA: results froM the GlobAl ... Programme c/o Royal Society for the Protection of Birds The Lodge, Sandy Bedfordshire SG19 2DL United ... the incidental mortality of seabirds in most of the fisheries within its jurisdiction, and has done ... so through area- specific risk assessments linked to mandatory use of measures to reduce or eliminate ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Автор(ы): BirdLife International (prepared by C. Small and F. Taylor)

8. 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 : Автор(ы): Hillary, R.M., G.P. Kirkwood and D.J. Agnew

9. 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 : Автор(ы): Agnew, D.J. and G.P. Kirkwood

10. 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 : Автор(ы): Yudanov, K.I.

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