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1. Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)

   elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo- King George I.) Abstract ... / Description:  Southern elephant seal,  Miroung a leonina, populations at Península Valdés (Patagonia) and 25 ... de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two main objectives ... intrinsic population growth rate is positive. In 1982, at Stranger Point, a sharp decrease of the female ... demographique est positH. En 1982, a stranger Point, une forte diminution de la composante femelle de la ... objetivos principales : el patron de emergida y la tendencia de la poblacion de hembras. En ambos lugares ... , la tasa intrinseca de crecimiento de la poblacion es positiva. Se observo en 1982, en Stranger ... poblacion en Stranger Point, y el aumento global en la Peninsula de Valdes, indican el buen estado de estas ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Автор(ы): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli

2. Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.

   Paper Title:  Estimation of natural mortality using catch-at-age and aged mark-recapture data: a ... multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a ... applied. Two alternative estimation models were developed both using a Poisson likelihood for annual ... ; constant catch ODE (CCODE) model uses a new total mortality ODE with constant within-year catch per unit ... these CCAMLR fisheries (Constable and de la Mare, 1996). Although natural mortality is likely to vary ... -effort data and the ‘extended survivors’ method of Shepherd (1999). Leigh et al. (2006) use data for a ... al. (2006), and (iii) a funda- mental difference in the definition of the likelihood for the number ... function, and the A + nf – 1 YCS para- meters. Basing estimation of M on equation (7), the CCODE model ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Автор(ы): Candy, S.G.

3. Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a case study

   (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a ... case study Abstract / Description:  This work describes a parametric bootstrap model for standardising ... animal count data to a common reference point of breeding chronology for species with a complex temporal ... Population Estimates) is a suite of routines that implements a general abundance estimator accounting for ... se concentran en el ajuste del conteo de adultos a un número efectivo de parejas reproductoras, si ... estimación de la incertidumbre notificada para los conteos publicados originalmente ha sido incorporada en ... las estimaciones ajustadas finales. El ajuste para el sesgo de la disponibilidad se consigue ... población en escala regional. A modo de ilustración, se aplica el método a varios ejemplos de estudios ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 213–227 : Автор(ы): McKinlay, J., C. Southwell and R. Trebilco

4. Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey

   a fixed fraction of the estimate of krill biomass from a survey Abstract / Description:  Butterworth ... et al. (1992) put forward an extension of the harvesting model of Beddington and Cooke (1983) to ... relate potential krill yield to a pre-exploitation survey estimate of krill biomass. In this paper, the ... over the ranges of uncertainty for a number of model parameters. Results are provided for the ... [35, 371 mm y W , = 20 mm. Los resultados se dan so10 para la temporada de pesca de diciembre a ... estimada, la cual esta fijada para dar la captura en un periodo de 20 aiios. Se han considerado tres ... importante es la integracidn de 10s rangos de incertidumbre para diferentes parametros del modelo. Se ... probabilidad de un descenso inferior a D,,,, = 0.2, y (ii) la mediana Bfi,/K"P, en funcion de y y F, para las ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Автор(ы): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew

5. The error of the biomass estimate as a function of survey parameters and the statistics of a density field of krill aggregations

   Paper Title:  The error of the biomass estimate as a function of survey parameters and the ... statistics of a density field of krill aggregations Abstract / Description:  Simple relationships expressing ... the dependence of relative sampling error in a biomass estimate (from a survey) on the statistical ... this region. For a hydroacoustic survey, the anisotropy parameters correlation radius along transects ... usadas en la practica para una estimacion a posteriori del error cometido al calcular la biomasa, asi ... y los metodos de calculo de probabilidades. La estimacion de biomasa se determina como el producto ... de la densidad promedio para la region bajo estudio y el area de esta region. Para una prospeccion ... decrites peuvent etre utilisees en pratique it la fois pour une estimation a posteriori de l'erreur faite ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 213-228 : Автор(ы): Kizner, Z.I.

6. A review of the effectiveness of streamer lines as a seabird by-catch mitigation technique in longline fisheries and CCAMLR streamer line requirements

   Paper Title:  A review of the effectiveness of streamer lines as a seabird by-catch mitigation ... technique in longline fisheries and CCAMLR streamer line requirements Abstract / Description:  Based to a ... light of a review of existing literature and available data on the effectiveness of single and paired ... is lacking and is identified as a high priority. Future streamer line research should compare the ... al barco y el objeto remolcado sean desplegados a barlovento de la línea de pesca; y por último, se ... recomendado para mitigar la captura de aves marinas en las pesquerías de palangre a nivel mundial. Este ... , y se estima que éstos debieran tener alta prioridad. En el futuro, los estudios deberán comparar la ... requisitos de líneas espantapájaros dispuestos en la Medida de Conservación 25-02 se comparan con los ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 189–201 : Автор(ы): Melvin, E.F., B. Sullivan, G. Robertson and B. Wienecke

7. Midwater trawl catchability as an aspect of a quantitative assessment of krill biomass conducted using a trawl census survey

   Paper Title:  Midwater trawl catchability as an aspect of a quantitative assessment of krill ... biomass conducted using a trawl census survey Abstract / Description:  Midwater trawl catchability is a ... catchability and krill distribution patterns. A comparative analysis of trawl catchability for commercial ... high relative error. A standard method for conducting krill trawl census surveys needs to be developed ... capturabilidad del arrastre Isaacs-Kidd y error relativo en la estimacion de la biomasa, correspondientes al ... ). Lista de las figuras Distribucion de la biomasa de krill en la zona de las islas Orcadas del Sur, a ... distribuci6n y comportamiento de las especies buscadas y de los parametros del arrastre. La fiabilidad de las ... la forma de distribuci6n del krill. Un analisis comparativo de la capturabilidad de los arrastres ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 257–272 : Автор(ы): Kasatkina, S.M.

8. Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index

   Paper Title:  Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a ... Japanese krill fishery for the 1980/81 to 2003/04 fishing seasons were analysed. For a number of ... . The results strongly suggest that the krill fishery in the South Georgia area is operating at a ... analysis the status of fishing in Subareas 48.1 and 48.2 was not clear. A linear correlation was observed ... kril en el área de Georgia del Sur está operando a un nivel crítico de la disponibilidad de kril que ... dejaron claro el estado de la pesquería en las subáreas 48.1 y 48.2. Se observó una correlación lineal ... captura y esfuerzo de lance por lance registrados en los cuadernos de bitácora de los barcos de la ... pesquería japonesa de kril durante las temporadas de pesca 1980/81 a 2003/04. Para varias defi niciones del ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Автор(ы): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu

9. A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ

   Paper Title:  A first attempt at an assessment of the Patagonian toothfish (Dissostichus ... reviewed briefly. It is characterised by very large illegal catches and a sharply declining longline catch ... -per-unit-effort (CPUE) trend. Application of a simple age-structured production model (ASPM) provides ... a robust indication that the spawning biomass has been depleted to, at most, a few percent only of ... /97 a 1999/2000 provienen de los informes del grupo WG-FSA de la CCRVMA. Los valores para 2000/01 se ... normalizados por el GLM (divididos por la estimación del coefi ciente de capturabilidad q) a los cuales se ... ciente de capturabilidad q) a los cuales se ajusta el modelo de la población. Figura 3: Ajustes del ... del coefi ciente de capturabilidad q) a los cuales se ajusta el modelo de la población. Figura 4 ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Автор(ы): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller

10. Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3

    Paper Title:  Towards the development of a management plan for mackerel icefish (Champsocephalus ... years of poor krill availability. Thus natural  ortality of C. gunnari may, in some years, increase by a ... outlines a scheme which would use information from studies on krill and predators undertaken as part of the ... . Full implementation of such a scheme would require greater knowledge of quantitative aspects of food ... . gunnari in Subarea 48.3 realizan en el programa de seguimiento del ecosistema de la CCRVMA (CEMP) para ... alimenticia en el ecosistema de Georgia del Sur. Por lo tanto, se necesita un enfoque provisional para fijar ... , esto impediria para siempre la apertura de la pesqueria. Se discuten varias posibles modificaciones a ... La ordenacion del recurso draco rayado (Ckampsocepkalus gunnari) en Georgia del Sur se ve complicada ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Автор(ы): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes

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