Résultats de la recherche

1. 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

2. 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

3. Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia

   (Champsocephalus gunnari) in Subarea 48.3 employs the CCAMLR mixture analysis program (CMIX) and generalised yield ... accurate identification of age cohorts from the survey data. In this paper a length-based approach is ... data which, in conjunction with the bootstrapped survey biomass data, yields an estimate of the ... showed very good agreement in calculated yields for 2006, 2007 and 2009, and some differences for 2008 ... weighting defined in de la Mare (1996). However, given the sparseness or missing nature of the data for ... were pre- weighted according to the approach detailed in de la Mare (1996) and is the same procedure ... d'analyse mixte de la CCAMLR (CMIX) et sur des progiciels de modèles de rendement généralisé (GYM), qui ... , dans une population, dérivent le nombre selon l'âge et le projette en fonction de la règle de contrôle ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Auteur(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew

4. A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia

   levels of infection by a rhizocephalan barnacle have been found in the population of the crab Paralomis ... to declines in spawning stock. The effects of harvesting both healthy and infected animals are ... animals from the population. The need is stronger when the population is sensitive to declines in spawning ... stock. Results highlight the importance of incorporating parasitism in the design of a management ... mediante un modelo de la poblacion que toma en cuenta las caracteristicas principales del sistema. Se ha ... improving on this preliminary study are identified. Resume La population de crabes Paralomis ... spinosissima exploitee par une nouvelle pecherie autour de la Georgie du Sud (sous-zone 48.3) depuis 1992 ... effet, entre autres, de provoquer la sterilite des individus infestes. De ce fait, le parasitisme peut ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Auteur(s): Basson, M

5. The gentoo penguin as a candidate species for the CCAMLR Ecosystem Monitoring Program

   in the CEMP. The extensive dependence of this species in these ISRs on Euphausia superba, (including ... in winter), its residence in the ISRs in winter and its early attainment of sexual maturity are all ... les zones d'etude integree (ISR) du programme de contrOle de l'ecosysteme de la CCAMLR), nous ... amenent a suggerer (en presentant la bibliographie complete de la litterature de support) que le manchot ... informaci6n dietetica y bio16gica recopilada durante varios alios en la isla de los Pajaros, Georgia del Sur ... Estudio Integrados (ISRS)) del Programa de Seguimiento del Ecosistema de la CCRVMA), sugerimos que el ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 483–488 : Auteur(s): Croxall, J.P. and T.D. Williams

6. The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a simulation model

   simulation model Abstract / Description:  The methods, described in CCAMLR Conservation Measures, used for ... implement because of the variation in catch rates shown by the fisheries. Non-fluctuating random and ... decisions is investigated under a variety of circumstances. The model described in the existing conservation ... reporting periods are small (five days) and the reporting delay is minimal. It is recommended that in future ... in this paper. Resume Les methodes decrites dans les mesures de conservation de la CCAMLR ... regression lineaire effectuee sur les quatre demieres periodes de declaration; i1 ferme la peche si ces taux ... decidir la fecha de cierre de las pesquerfas. 1. INTRODUCTION CCAMLR manages fisheries in its ... , servant it detenniner la date de fenneture des pecheries contrOlees par le secretariat de la CCAMLR, sont ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 81–97 : Auteur(s): Agnew, D.J.

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

   the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... specify growth, mortality, age-dependent selectivity and seasonal patterns in fishing mortality. Results ... each age mature Increment in year when spawning occurs Number of increments in spawning season PE ... because i t m a y l e a d t o a subs tan t ia l dep le t ion of t he s p a w n i n g s tock ... biomass, particularly in short-lived species (de la Mare and Constable, 1990; SC-CAMLR, 1991). For ... . Constable and de la Mare F, in equation 1 is the average fishing mortality over all age classes in year y ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Auteur(s): Constable, A. and W.K. de la Mare

8. Feeding patterns of nine species of Antarctic fish and assessment of their daily food consumption

   fish species in Antarctic waters. The aim of this study is to collect information on the feeding ... patterns of several commercially non-targeted species in the Indian Ocean sector of the Southern Ocean ... station was carried out in the Kosmonavtov Sea (67°50'S; 41°24'E) in March 1988. All samples ... . Some scientists (Novikova, 1949; Kogan et al., 1963) believe that changes in the stomach fullness ... planktivorous fish Pagothenia borchgrevinki. Polar Bioi., Vol.9, No.6: 405-408. NOVIKOVA, N.S. 1949. 0 ... Bathydraconidae (deux especes). L'etude est axee sur l'analyse de la composition de l'alimentation de ces ... la mer Kosmonavtov (67°50'S; 41°24'E) en mars 1988. Tous les echantillons ont ete preleves de la ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 321–333 : Auteur(s): Pakhomov, Y.A. and V.B. Tseitlin

9. Determination of Antarctic krill acoustic back-scattering cross-section

   -section of back-scattering of krill. The target strength can be determined in situ by measuring the echo ... inverse. Avec l'enregistrement resolvant du krill, la force de la cible peut etre determinee in situ par ... acoustique du krill a l'egard de sa longueur a 120 kHz. Lista de Tablas Resultados de la medicion de ... of 120 kHz. * * * * * * * * * * DETERMINATION DE LA SECTION ACOUSTIQUE DIFFUSANTE INVERSE DU ... la mesure de l'echosignal d'un speclmen isole. Ayant calcule le niveau moyen de diagramme de ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 141-152 : Auteur(s): Protaschuk, V.A. and T.A. Lukashova

10. Review of length-weight relationships for Antarctic krill

    les stades de maturite dominants permet d'ameliorer la precision des calculs des relations longueur ... humedo. Los calculos de estas relaciones son mas fiables cuando se toman en cuenta la informaci6n sobre ... sexos y las fases de madurez predominantes. Se discute la influencia de los cambios estacionales en ... las variables de la relaci6n talla-peso y se dan recomendaciones para el posible empleo de las ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 145–155 : Auteur(s): Siegel, V.

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