Результаты поиска

1. A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey

   Paper Title:  A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across ... :  A probabilistic Bayesian Maximum Entropy (MaxEnt) technique was used to estimate the abundance of ... tonnes, with a standard deviation of 10 million tonnes. The MaxEnt method provides new insights into the ... entropía (MaxEnt) para estimar la abundancia de kril antártico (Euphausia superba) en el Mar de Escocia a ... partir de los datos de la prospección sinóptica de kril CCAMLR 2000 realizada en el Área 48, y para ... graficar la distribución de las densidades de kril en el área de prospección. Los valores de la densidad ... para la proporción del área de prospección que no fue cubierta por los transectos fueron inferidos ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Автор(ы): Heywood, B.G., A.S. Brierley and S.F. Gull

2. A comparison between the estimated density of krill from an acoustic survey with that obtained by scientific nets on the same survey

   ., Higginbottom, I., Hosie, G., de la Mare, W.K., Nicol, S. Title:  A comparison between the estimated density of ... part of a hydroacoustic biomass survey for Antarctic krill in CCAMLR Division 58.4.1. The acoustic ...

   Meeting Document : WG-EMM-97/43 : Автор(ы): Pauly, T., Higginbottom, I., Hosie, G., de la Mare, W.K., Nicol, S.

3. A proposed management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   Paper Title:  A proposed management procedure for the toothfish (Dissostichus eleginoides ... abundance. A Management Procedure (MP) approach is proposed to provide a sound scientific basis to recommend ... ‘Optimistic’, ‘Intermediate’, ‘Less Pessimistic’ and a ‘Pessimistic’ current status for the resource are ... are used for trials of a candidate generic MP which could provide future TAC recommendations for this ... . Resumen El estado de los stocks de austromerluza en la región de las Islas Príncipe Eduardo no se conoce ... científica sólida para recomendar la captura total permisible (TAC) en el futuro, habida cuenta de esta ... especificados para los parámetros de control en base a los resultados de las pruebas. Dada la importancia de ... de los parámetros de control se concentró ante todo en la probabilidad razonable de asegurar el ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 33–69 : Автор(ы): Brandão, A. and D.S. Butterworth

4. 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 ... Abstract:  This paper presents a flexible structure for a general yield model, which provides ... fishing on the estimates of yield per recruit. Also, it can be used to evaluate the performance of a stock ... under a specified catch regime. The model uses an adaptive Runge-Kutta procedure to evaluate stock ...

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

5. 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 ... estimate of survey catchability, we recommend that a non-informative prior with uniform distribution be ... used for abundance estimates from trawl surveys in a toothfish stock assessment. The bounds of such as ...

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

6. A balanced model of the food web of the Ross Sea, Antarctica

   Paper Title:  A balanced model of the food web of the Ross Sea, Antarctica Abstract / Description ... :  A quantitative food web of the Ross Sea is presented here as a step towards investigating ecosystem ... base. A survey of the available literature and both published and unpublished data provided an initial ... , and a method is described to adjust the initial parameter set to give a balanced model, taking into ... principales componentes de la biota del Mar de Ross y pone a prueba la coherencia de los datos. El modelo ... . Resumen Se presenta un modelo cuantitativo de la red alimenticia del Mar de Ross, con el fin de avanzar ... en el estudio de los efectos de la pesquería de austromerluza antártica (Dissostichus mawsoni) en el ... promedio reciente (1990–2000). El foco del modelo es el papel de la austromerluza antártica en la red ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Автор(ы): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet

7. Промысел и стабильность запасов криля

   to 3 years old. They are important in the food chain because they feed on phytoplankton, and to a ... largest part of their diet. For this reason krill are considered a keystone species in the Southern Ocean ... population each year. This may be driven by variability in the amount of sea-ice, which is why there is a ... -ice around the whole of the Antarctic). Commercial fishing of krill Managing a sustainable krill ...

   Page : Site Section: Fisheries

8. Towards a new method for age determination in Antarctic krill, and evidence that krill shrink under natural conditions

   . Author(s):  W. de la Mare (Australia) Title:  Towards a new method for age determination in Antarctic ... summer show an apparent linear relationship between crystalline cone number and body-length. From a ... be a more reliable indicator of age than body-length alone. The ratio of crystalline cone number to ... body-length offers a method for detecting the effect of shrinking in natural populations of krill. On ...

   Meeting Document : WG-Krill-94/17 : Автор(ы): W. de la Mare (Australia)

9. A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies

   Paper Title:  A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age ... using a von Bertalanffy (VB) growth model taking into account response-biased sampling of fish that were ... used length-bin sampling involving a fixed sample size per bin. Estimation of the VB parameters used a ... selectivity alone. This was due to the feature of the selectivity function of a sharp decline from ‘full ... por intervalo de tallas en la probabilidad del muestreo. La curva de VB ajustada a los datos de talla ... eleginoides) en Isla Heard (División 58.5.2), tomando en cuenta el sesgo de la muestra utilizada para la ... determinación de la edad atribuido a la respuesta de los peces. El submuestreo aleatorio de los datos de ... de verosimilitud para el muestreo de probabilidad variable (VP), para tomar en cuenta la ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Автор(ы): Candy, S.G., A.J. Constable, T. Lamb and R. Williams

10. A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem

    Paper Title:  A first step towards modelling the krill–predator dynamics of the Antarctic ... hypothesis of a krill surplus in the mid-20th century is described, and the information on population and ... population trends without the need for recourse to environmental change hypotheses. A model is developed ... former. A reference case and six sensitivities are fitted to available data on predator abundances and ... , destacándose el papel fundamental del recurso kril. Se describen los fundamentos de la hipótesis de que a ... sector en el pasado. Se ajustó un caso de referencia y seis sensibilidades a los datos disponibles ... Austral muestran los mayores cambios en la abundancia de las especies, en contraste con el sector del ... mediados del siglo veinte hubo un excedente de kril, y se analiza la información obtenida acerca de las ...

    Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Автор(ы): Mori, M. and D.S. Butterworth

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