Resultados de la búsqueda
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CCAMLR Science – Opciones para el futuro
publicise the science done in CCAMLR and to raise the profile of CCAMLR within the international scientific ... community. A reduction in the number of papers submitted to, and published in the journal, has prompted a ... review of options for the future of CCAMLR Science. In particular, it may be timely to review the role ...
Meeting Document : SC-CAMLR-XXXIV/07 : Autor(es): CCAMLR Secretariat
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Enmiendas a la Medida de Conservación 51-06 (2014) Medida general para la observación científica en las pesquerías de Euphausia superba
Abstract: Uncertainties in Antarctic krill stock still do not allow scientists to develop ... Ukraine suggests the changes to CCAMLR Conservation Measure 51-06(2014) in order to make the scientific ... observation system in the krill fishery mandatory. Author(s): Delegation of Ukraine Title: Amendments to ... Conservation Measure 51-06 (2014) General measure for scientific observation in fisheries for Euphausia superba ...
Meeting Document : CCAMLR-XXXV/31 : Autor(es): Delegation of Ukraine
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UPDATE OF THE INTEGRATED STOCK ASSESSMENT FOR THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS USING CATCH-AT-AGE DATA AND TWO YEARS OF SURVEY ABUNDANCE-AT-AGE DATA
took into account uncertainty due to haul-level variability in catch-at-length proportions, ALK ... predictions of numbers-at-age and proportions-at-age. In other work, this matrix was found to depend on the ... median score for all aged fish in the assessment was 3 but some fishery-by-year combinations had a higher ... value of 4. The output from the integrated assessment of most interest in this study is the CV of the ...
Meeting Document : WG-SAM-09/09 : Autor(es): S.G. Candy (Australia)
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A von Bertalanffy growth model for Division 58.5.2 fitted to length-at-age data and a comparison of predicted with observed growth from mark–recapture data
trawl in Heard Island fishery were fitted using a von Bertalanffy (VB) growth model taking into account ... being a sharp decline in selectivity from 100% at 1000 mm down to 1% by 1600 mm. The VB curve fitted to ... relative to those for the LF sample were also included in defining relative probabilities, the VP maximum ... growth rate (AGR) for lengths measured at release and first recapture in mark-recapture studies were ...
Meeting Document : WG-FSA-SAM-06/07 : Autor(es): S.G. Candy, A.J. Constable, T. Lamb and R. Williams (Australia)
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Compliance requirements for an orderly development of the krill fishery
in Statistical Division 58.4.2 Australia noted that while the scientific data supported an increase ... , such a large increase required the inclusion of other elements in the conservation measure to ... number of compliance measures that have proven successful in managing the toothfish fisheries that are ... catches at port in CM 10-03 (Port inspections of vessels carrying toothfish). o Components of CM 21-02 ...
Meeting Document : CCAMLR-XXVI/31 : Autor(es): Delegation of Australia
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A krill–predator–fishery model for evaluating candidate management procedures
Statistical Area 48 amongst smaller spatial units in order to minimize the localized depletion of krill in ... necessary to evaluate these procedures in terms of their likely effects on krill and predator populations as ... well as fishery performance. This evaluation must be conducted in the context of considerable ... running the model in S-Plus and illustrate its use. Finally, we conclude that although our model ...
Meeting Document : WG-EMM-05/13 : Autor(es): G.M. Watters, J.T. Hinke (USA), K. Reid and S. Hill (United Kingdom)
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An interlaboratory comparison of ages estimated for Dissostichus eleginoides from the Argentine Sea, southwest Atlantic Ocean
Abstract: To examine consistency among laboratories in age estimation of Patagonian toothfish and ... 124 fishes caughts in Argentine Sea (South West Atlantic) Ages were estimated by readers from National ... a clearer section. More hyaline bands were visible in the NIWA preparations, particularly near the ... otoliths could not be classified as easy to read, the clarity of their zones is quite similar in the South ...
Meeting Document : WG-FSA-04/45 : Autor(es): M.C. Cassia (Argentina), P.L. Horn (New Zealand) and J.R. Ashford (USA)
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An ecosystem-based approach to management: using individual behaviour to predict the indirect effects of Antarctic krill fisheries on penguin foraging
Abstract: 1. Changes in species’ abundance and distributions caused by human disturbances can ... have indirect effects on other species in a community. Although ecosystem approaches to management are ... conditions on these interactions. In this study, we extended a behavioural model used previously to ... penguin foraging success and behaviour in adjacent breeding sites. 3. Increased fishing pressure offshore ...
Meeting Document : WG-EMM-03/34 : Autor(es): S.H. Alonzo, P.V. Switzer and M. Mangel (USA)
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Short note: time series of Drake Passage Oscillation Index (DPOI) from 1952 to 1988
Abstract: Naganobu et al. (1999) had assessed variability in krill recruitment and density with ... differences across the Drake Passage, sea ice cover and chlorophyll-a in the Antarctic Peninsula area during ... westerlies were especially regarded as a key environmental index. Fluctuations in the westerlies across the ... variability. High DPOI periods, not less than 16 hPa, were mostly observed in the period before 1964 and only ...
Meeting Document : WG-EMM-02/44 : Autor(es): M. Naganobu and K. Kutsuwada (Japan)
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Predation on fish by the southern elephant seal, Mirounga leonina, at King George Island, South Shetland Islands, as reflected by stomach lavage
, were stomach lavaged at King George Island in order to analyse their diet. The two major prey types ... were cephalopods and fish which ocurred respectively in 98,1% and 14% of stomachs containing prey ... nicholsi which constituted in number 69% of the otoliths found. This species was followed by the ... nototheniid Pleuragramma antarcticum which represented 11,7% in number and 31,3% in frequency of occurrence ...
Meeting Document : WG-EMM-01/58 : Autor(es): G.A. Daneri and A.R. Carlini (Argentina)