Résultats de la recherche

1. Using tag-recapture data to estimate catchability of a series of random stratified trawl surveys

   ):  W. de la Mare, P. Ziegler and D. Welsford (Australia) Title:  Using tag-recapture data to estimate ... Heard Island and McDonald Islands (HIMI) in Division 58.5.2, a prior for catchability q of the random ... address potential bias in the estimation of q and conclude that the potential bias that may arise from ... fishing selectivity cannot be corrected for given the available data.   In the absence of an unbiased ...

   Meeting Document : WG-SAM-15/34 : Auteur(s): W. de la Mare, P. Ziegler and D. Welsford (Australia)

2. Fishing for toothfish using pots: results of trials undertaken around South Georgia, March–May 2000

   commercial viability of this fishing method for toothfish fisheries in the CCAMLR Convention Area. While the ... toothfish was notably lower than that achieved in the longline fishery. Importantly, the use of pots ... ~y npoMbrcny BoKpyr IOrn~oii reoprrru. TaGn. 3: Cpan~ew~e ynonon KnbrKava B pe?ynbTaTe nonymeworo ... viabilidad comercial de este m6todo de pesca en las pesquerias de palangre en el Area de la Convenci6n. Si ... elegir~oides) autour de la Georgie du Sud (sous-zone 48.3). Par comparaison avec la m6thode de p@che B ... oiseaux. Ce document decrit 11exp6rience et ses resultats, en pr6sentant une discussion de la viabilite ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 93–105 : Auteur(s): Agnew, D.J., T.M. Daw, G.M. Pilling and M.G. Purves

3. A generalised model for evaluating yield and the long term status of fish stocks under conditions of uncertainty

   regime is introduced. Author(s):  de la Mare, W.K., Constable, A.J. Title:  A generalised model for ... trajectories and catch rates over a simulation period. In particular, this procedure calculates catches over ... seasonal patterns in fishing mortality, at specified time intervals during the year. This general approach ...

   Meeting Document : WG-FSA-95/41 : Auteur(s): de la Mare, W.K., Constable, A.J.

4. 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 ... biomass based on acoustic data. An alternative approach is examined in which length and additional ... biological data are assessed in terms of decreases in the residual variance of relationships. We have ... identified key sources of variability where relatively small increases in the effort of analysis result in ... la precision de toute prediction portant sur la masse. Cependant, si l'on separe les femelles ... longueurs et le poids sec et vert en tant que fonctions du sexe, du stade de la rnaturite et du stade de ... l'incorporation de l'erreur dans les estimations de la biomasse basees sur les donnees acoustiques. Une autre ... supplementaires en fonction des diminutions de la variance residuel1e des relations. Nous avons identifie les ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 371-373 : Auteur(s): Morris D.J., J.L. Watkins, C. Ricketts, F. Buchholz, and J. Priddle

5. Beyond MSY: a consideration of definitions of management objectives

   different guidelines under more realistic population models, taking account of the objectives set out in ... criterios dependeran en si la mayor inquietud se encuentra en la sobrepesca de las poblaciones en ... exposes a l'Article II de la convention de la CCAMLR. Les criteres varieront selon que l'interet ... principal portera sur le recrutement ou la surexploitation au detriment de la croissance. 11 faudra ... ce qui concerne la presentation de suggestions a la commission concernant les pecheries de poissons ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Auteur(s): Gulland, J.A.

6. Estimating the abundance of pack-ice seals off east Antarctica

   . de la Mare (Canada), P. Boveng (USA), A.S. Blix and E.S. Nordoy (Norway) Title:  Estimating the ... leopard seal populations in 1,500,000 km2 of pack-ice off east Antarctica between longitudes 60-150oE ... helicopters to estimate the density of seals hauled out on the ice in survey strips. The probability of ... detecting seals in survey strips was estimated using double observer line transect methods, and satellite ...

   Meeting Document : WG-EMM-05/23 : Auteur(s): C. Southwell (Australia), D. Borchers, C. Paxton (United Kingdom), B. de la Mare (Canada), P. Boveng (USA), A.S. Blix and E.S. Nordoy (Norway)

7. Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds

   Abstract / Description:  Selectivity studies were carried out for two types of steelon codends used in ... process- especially in the latter case- is not satisfactory. Scotia Sea icefish, Chaenodraco wilsoni, and ... the trawling among all the species studied. Conclusions and observations were in some cases based on a ... el arrastre, si bien la efectividad de este proceso - especialmente en el segundo caso - no es ... grace a I'utilisation d'une sang le a mailles ouvertes en permanence dans la fabrication des culs de ... selectivite necessaires pour la peche au pOisson des glaces de la Georgie du Sud qui, de toutes les especes ... est necessaire de proceder a d'autres etudes sur ce probleme, la production d'engins de chalutage ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Auteur(s): Zaucha, J.

8. SCOI-98

   Argentina en relación con el monitoreo satelital de buques (available in Spanish only) Delegación de ... Provision of information in accordance with the System of Inspection and the Scheme of International ... Scientific Observation Secretariat SCOI-98/05 New Norwegian regulations for fishing in the CCAMLR area ... Chile SCOI-98/09 Assessment of illegal longline fishing in French waters adjacent to the Kerguelen ...

   Meeting

9. Acoustic estimates of krill density at South Georgia, 1981 to 1998

   separate density estimates for northeastern and northwestern South Georgia, and in four of these seasons ... ~lcnepc~a). K ~ H ~ I petico~, HaWiHaKlU(MeCR C JB, OTHOCRTCR K pe i ica~ CyAHa RRS John Biscoe ~ ~ P ... le navire qui a pris sa place, le RRS James Clavk Ross. * indique que la capture de krill ktait trPs ... seasons density was higher to the east. Resume Estimations acoustiques de la densite du krill ... cette periode, on assiste a une fluctuation importante de la densite de krill a cette ile d'annee en ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Auteur(s): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson

10. Using ecosystem monitoring data to detect impacts

    an observed value in an unimpacted system, or (ii) the frequency of values below a fixed reference ... point. The second approach allows inference criteria based on changes in this frequency rather than by ... decline in Antarctic fur seal (Arctocephalus gazella) pup production at South Georgia from the early 1990s ... analíticamente, lo que facilita la toma de decisiones en base a la posición adoptada con respecto al riesgo ... of anomalies tend to be based on their probability of occurrence in baseline data (e.g. de la Mare ... touché, soit ii) la fréquence des valeurs situées en dessous d'un point de référence fixe. La seconde ... années, un déclin important prolongé de la production de jeunes chez l'otarie de Kerguelen ...

    Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Auteur(s): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda

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