Résultats de la recherche

1. Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias

   Lincoln-Petersen equation, the simplest form of an abundance estimator using tag-recapture data, was used ... – dirk.welsford@aad.gov.au Abstract The Lincoln-Petersen equation, the simplest form of an abundance estimator ... features in common with the simplest form of an abundance estimator, known as the Lincoln- Petersen ... controlled measures of survival and tag-detection for the CCAMLR tagging program. Document WG-SAM-12/30 ... example, anchoring the standard size of CCAMLR T-bar tags between the pterygiophores at the base of the ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Auteur(s): Welsford, D.C. and P.E. Ziegler

2. A rationale for conservation areas within Antarctic waters

   , that all fishing data are recorded in the form recommended by the Scientific committee of CCAMLR (see ... abundance. Sci~ Rep. Whales Res. Inst. Tokyo 37: 155-165. HOSHIAI, T., T. SWEDA, and A. TANlMURA. 1986 ... synthesis of current knowledge. Biomass Scientific Series No. 4: 1-46. - 527 - Figure 1 Surface ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Auteur(s): Chittleborough, R.G.

3. On the power to detect changes using the standard methods for monitoring parameters of predatory species

   ) of CCAMLR (1989) by the omission of an exponent on the sum of the t-values. The corrected form of ... from the study by Trivelpiece et al. (1989) at Admiralty Bay, King George Island (62°10'S, 58°30'W ... ) to compute the requisite sample sizes for detecting changes of 10%, 20% and 30% of the mean value ... sample sizes for detecting changes of 10%, 20% and 30% of the mean values are shown in Table 2. No ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Auteur(s): Boveng, P. and J.L. Bengtson

4. Midwater trawl catchability in relation to krill and possible ways of assessing gross catch

   take place. It is expressed as a multiplicative equation in the form of a function of different ... -section diameter of 5 to 6 m and a mesh bar of 30 mm, then 0.33 kg of laill will escape through one ... , mh m 109 88 26 Mean standard deviation of the depth of the upper edge of the swarm, O'h m 46 30 9 ... Rhomboid a=lOO (30) mm a=80(20)mm a=60 (18) mm 0.2 0.2 0.2 Hexagonal a=lOO (20) mm a=80 (14) mm a=60 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Auteur(s): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov

5. Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines

   57.2 ± 6.4 79 16 11 568 511 1 679 ± 74 j,k,l 39.2 ± 2.7 105 26 30 683 633 2 568 ± 82 , , ,i j k ... estimated 30% depredation rate over the total capture of Patagonian toothfish, this study reports levels ... - viding advices for statistical analyses. References Abe, T. and T. Iwani. 1989. Notes on fishes from ... . Agnew, D.J., J. Pearce, G. Pramod, T. Peatman, R. Watson, J.R. Beddington and T.J. Pitcher. 2009 ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Auteur(s): Gasco, N., P. Tixier, G. Duhamel and C. Guinet

6. An iterative model to construct an age/length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters

   obtenido con el metodo tradicional. Este metodo iterativo resulta ser una herramienta de alternativa ... limitantes de la CLE radica en que esta no puede ser empleada para aplicarse a distribuciones de longitud de ... mas estricto del impacto de la actividad extractiva, situaci6n que puede inc1uso ser casi instantanea ... correspondiente lectura de edad, las que deberan ser estimadas con la clave longitud-edad previamente construida ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 11–20 : Auteur(s): Robotham, V. H. and Z. Young U.

7. Interactions of Patagonian toothfish fisheries with killer and sperm whales in the Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible mitigation strategies

   Islands 0 10 20 30 40 50 60 70 80 90 100 2003/04 2004/05 2005/06 2006/07 2007/08 Fishing ... : Mean interaction rates of killer and sperm whales with longlines between 2003 and 2008. 0 10 20 30 ... 5 10 15 20 25 30 2003/04 2004/05 2005/06 2006/07 2007/08 Fishing season D ep re da tio n ... ., 2007), it was estimated that the amount of fish they depre- dated represented about 30% of the energy ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 179–195 : Auteur(s): Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier and C. Guinet

8. Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari in the South Georgia area

   survivorship of age class a a Pat proportion by number of recruited population in year t consisting of age ... range of ages, the following formula is required : where rII(t) = proportion by number of the ... recruited stock in year t made up of new recruits Pat proportion by number of age class a in year t ... The recruited stock in numbers follows the equations where C is the catch in numbers. t To ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 1-21 : Auteur(s): Cooke, J.G.

9. Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile

   Sep Oct Nov Dec Month S pe rm w ha le s (in di vi du al s) 0 10 20 30 40 50 60 70 ... 80 90 E ffo rt ( ha ul s ob se rv ed ) (a) 0 5 10 15 20 25 30 35 40 45 Jan Feb ... 20 30 40 50 60 70 80 90 E ffo rt ( ha ul s ob se rv ed ) (b) (a) (b) Hucke ... le ng th ( m m ) (a) y = 6.2936x + 173.06 R2 = 0.8552 0 5 10 15 20 25 30 40 50 60 70 ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Auteur(s): Hucke-Gaete, R., C.A. Moreno and J. Arata

10. Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives

    20 ou 30 annees it venir. Ces mortalites par peche sont fondees sur des descriptions probabilistes ... conduit pas forcement it un repeuplement du stock en 20 ou 30 ans, et que, par consequent, les stocks ... will also be extremely difficult, and some form of model will have to be selected which is compatible ... other target level) in 30 years; and (iv) the fishing mortality corresponding to FO•l • A TAC (which ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 467–475 : Auteur(s): de la Mare, W.K. and A. Constable

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