Результаты поиска

1. Further development of pairwise tag detection performance index and its application to the stock assessment of toothfish in the Ross Sea fishery

   ) could lead to an over-estimate of the stock biomass. In this paper we develop further an index of vessel ... -specific tag detection performance for the Ross Sea fishery using a case-control methodology which controls ... for the inter-annual spatial and temporal variability of commercial fishing operations from which tags ... subset of vessels for which  there is confidence in their tag-recapture data. Finally, we apply these ...

   Meeting Document : WG-SAM-13/34 : Автор(ы): S. Mormede (New Zealand)

2. THE RISK TO FISHERY PERFORMANCE ASSOCIATED WITH SPATIALLY RESOLVED MANAGEMENT OF ANTARCTIC KRILL (EUPHAUSIA SUPERBA) HARVESTING

   densities for efficient exploitation. Finally, the distribution of both catch and fishing effort over an ... Abstract:  The ecosystem approach to fisheries attempts to define objectives for the target ... species, the wider ecosystem and, critically, the fishery itself. Proposals for implementing this approach ... often include spatial restrictions on harvesting and it is therefore important to understand how these ...

   Meeting Document : WG-EMM-09/P10 : Автор(ы): S. Hill, P. Trathan and D. Agnew

3. Important Bird Areas (IBAs) in Antarctica

   submitted a Working Paper (WP) and an Information Paper (IP) on Important Bird Areas to the Committee for ... recently completed analysis on IBAs based on the consistent application of global criteria for bird ... (IBAs) in Antarctica and IP 27 Important Bird Areas (IBAs) in Antarctica). These papers reported on the ... United States, on behalf of the original sponsors of the papers, presents this short paper to inform WG ...

   Meeting Document : WG-EMM-15/32 : Автор(ы): P.A. Penhale (USA)

4. Modeling the growth dynamics of Antarctic krill

   losses due to feeding and digestion, and an activity-based respiration factor. Positive net production ... of model coefficients were constructed from an analysis of field and laboratory measurements provided ... in the current literature. The model was forced with an environmental time series of food (pelagic ... conditions representative of phytoplankton concentrations observed on the inner and outer shelf, respectively ...

   Meeting Document : WG-EMM-96/68 : Автор(ы): Lascara, C.M., Hofmann, E.E.

5. Depletion experiment of Dissostichus eleginoides stock in the south of South Georgia Island (Antarctica)

   Abstract:  Ten hauling for Dissostichus eleginoides were performed from the 11lth to the 21 of ... projected to 3244.8 nm2, obtaining an estimated biomass of 937.8 ton. Due to statistical limitations of ... these data, another analisis based in the density (Kg/nm2) on the fished area was used. The positions ... given by the vessel were confirmed with information obtained from an automatic position system (ARGOS ...

   Meeting Document : WG-FSA-94/31 : Автор(ы): P. Rubilar, C.A. Moreno (Chile) and J. Ashford (United Kingdom)

6. Estimating Antarctic krill density from multi-beam observations using distance sampling methods

   Abstract:  The Scientific Committee has requested SG-ASAM to provide advice on the collection and ... multi-beam sonars.  Here I highlight a recently published analysis technique- an adaptation of distance ... sampling theory- that provides a general means for estimating krill density and biomass from vertically ... oriented multi-beam echo-sounder data.  I describe an extension to this approach that may, subject to the ...

   Meeting Document : SG-ASAM-12/05 : Автор(ы): M.J. Cox (Australia)

7. Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)

   , sagittal otoliths were examined from D. mawsoni that had been injected with oxytetracycline some years ... juvenile D. mawsoni. Mean fish lengths at ages 0.5, 1.5, 2.5, and 3.5 years were estimated to be 14, 28, 37 ... sample of data that was large but lacked any fish younger than 3.5 years. Counting translucent zones in ... the otoliths of D. mawsoni appears to be a valid method for determining the age of this species ...

   Meeting Document : WG-FSA-02/33 : Автор(ы): P.L. Horn, C.P. Sutton (New Zealand) and A.L. DeVries (USA)

8. Developing conceptual models of elements of the Antarctic marine ecosystem: Antarctic krill (Euphausia superba)

   Abstract:  A simple generalised conceptual life history model for Antarctic krill is developed ... based on observations and data from the literature. The model attempts to take into account the observed ... as an evolved product of interactions between the species and its environment. In particular, the ... model focuses on the different forces that act on the larval and adult stages. Author(s):  S. Nicol and ...

   Meeting Document : WG-EMM-04/50 : Автор(ы): S. Nicol and S. Kawaguchi (Australia)

9. Support to CCAMLR to identify and deter illegal, unreported and unregulated (IUU) fishing activities that undermine the objective of the CAMLR Convention – Interim Report 2019

   Abstract:  In 2018 EU provided a further grant of €50 000 to support to CCAMLR to identify and ... Approved Document Release Consent:  No Delegation responsibility for releasing documents:  CCAMLR ...

   Meeting Document : CCAMLR-38/BG/05 : Автор(ы): INTERPOL and CCAMLR Secretariat

10. Uncertainty in reported geographical distribution and weight of krill catches from Norwegian krill fishing vessels operating continuous fishing systems

    . Experiments on board ‘Saga Sea’ showed that there is an average delay of approximately 9 minutes between the ... relative standard deviation of 8-29% should be expected depending on vessel and specific holding tank ... weighed on the flow scales. Our investigations of historical catch report data showed patterns which ... routines have varied between vessels and among officers on board. The various historical reporting routines ...

    Meeting Document : WG-EMM-18/22 : Автор(ы): G. Skaret, T. Knutsen, F. Grebstad and O.A. Bergstad

Страницы