Resultados de la búsqueda

1. Simulations to evaluate model performance for Antarctic toothfish stock assessment in the Amundsen Sea region

   to be developed to assess the ASR for 2018, as recommended by Scientific Committee in 2016. Author(s ... shown promising results to date, with 8 interseason tags recaptured in the South area in 2016 and 12 ... (preliminary recaptures) in 2017. The aim of this paper is to ascertain when the Amundsen Sea region stock ... in estimates of biomass, the likely biases, and to set expectations for mark-recapture data for the ...

   Meeting Document : WG-SAM-17/40 : Autor(es): S. Mormede and S. Parker

2. Fishery Report: Exploratory fishery for Dissostichus spp. (TOT) in Division 58.4.2

   Dissostichus spp. in SSRU A (catch limit for Dissostichus spp.: 30 tonnes; final reported catch: 13 tonnes ... applies to this fishery and in recent years has been linked to an exemption for night setting in CM 24-02 ... December to 30 November Same period By-catch Regulated by CM 33-03 Carry forward Mitigation In ... ................................................................ 11  Throughout this report the CCAMLR fishing season is represented by the year in which that ...

   Document : Site Section: Publications

3. Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?

   subarea, derived from the subarea catch limit, appears to exceed this level in up to 20% of years due to ... conservative estimates of the regional biomass in recent years. This suggests that the trigger level would be ... (or “trigger level”), established in 1991, is 0.62 million tonnes year-1, equivalent to ~1% of the ... format to explain the management of the Antarctic krill (Euphausia superba) fishery in the subareas 48.1 ...

   Meeting Document : WG-EMM-16/21 : Autor(es): S. Hill, A. Atkinson, C. Darby, S. Fielding, B. Krafft, O.R. Godø, G. Skaret, P. Trathan and J. Watkins

4. Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates

   Paper Title:  Quantifying vessel performance in the CCAMLR tagging program: spatially and ... tagging program is critical to the successful management of a number of toothfish fisheries in Antarctica ... . In particular, tag-detection rates are directly linked to stock size estimated from the tag data in ... an integrated stock assessment. Previous attempts to assess the relative reliability of vessels in ... calculation by using CCAMLR Science, Vol. 20 (2013): 73–80 73 QuantIfyIng vessel performance In the ccamlr ... , and ends when the quota has been fully caught which, in recent years, has been between 15 January ... of tagged toothfish within season for most years (Figure 1). The method is applied in three ... were to investigate changes in performance of ves- sels between years. Due to the limited sample size ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Autor(es): Mormede, S. and A. Dunn

5. Distribution of the Soviet fishing fleet and catches (CPUE) in Subdivision 48.3 during 1986–1990

   - from August to September (in some years from June to September). The third fishing ground is ... -scale management units determination. In this work the available data of haul by haul catch statistics ... for the Soviet krill fishery in subdivision 48.3 for 1986-1980 (15 thousand hauls) were analyzed ... boundary between them located at 37-37 30’ W have been distinguished. These fishing grounds are formed ...

   Meeting Document : WG-EMM-02/63 Rev. 1 : Autor(es): V.A. Sushin, P.C. Gasiukov, A.V. Zimin and S.M. Kasatkina (Russia)

6. Fishery Report: Exploratory fishery for Dissostichus spp. (TOT) in Division 58.4.3b

   little across the area between years. (iii) Scenario 3: there is large turnover of large fish in ... indicate regular movements of fish, dashed arrows indicate sporadic movement of fish. 20. Also in 2009 ... years or more, and tend to be from the east to the west in coastal Antarctica, or from the coast to ... this potentially depleted stock is 30% B0 under the GYM application described in WG-FSA-10/42 Rev. 1 ...

   Document : Site Section: Publications

7. Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia

   . This represents at least 0.1% of the total Bird Island population and a minimum of 0.4% of animals in ... . Males accounted for 71% of entanglements, 88% of which were of young (1-4 years old) animals; females ... accounted for 64% of animals older than this. Obvious physical injury was being caused to 30% of animals and ... significant population decline has occurred concurrently. Antarctic fur seals are still increasing in numbers ...

   Meeting Document : CCAMLR-VIII/BG/05 : Autor(es): J.P. Croxall, S. Rodwell and I.P. Boyd (United Kingdom)

8. Some characteristics of krill transport in the Scotia Sea based on the Russian survey data

   Abstract:  In this work the characteristics of krill transport across the SSMUs determined on the ... basis of long-term Russian research in Area 48 are considered. Estimates of mean current velocities ... based on the long-term data from 3012 stations and respective time intervals when the water mass in the ... study area was totally replaced are presented. It is shown that in SSMUs the multiple total replacement ...

   Meeting Document : WG-EMM-05/41 : Autor(es): S.M. Kasatkina, V.N. Shnar and O.V. Berezhinsky (Russia)

9. Stomach contents of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea region in 2010 and a comparison with 2003

   two years. It is planned to carry out a more rigorous analysis of these data in the coming year ... . De Witt’s icefish, eel-cods, and glacial squid were also important occurring in about 20% of stomachs ... Abstract:  The stomach contents of 273 Dissostichus mawsoni captured by bottom longline in the ... in 640–2127 m depths and ranged between 78 and 181 cm TL. A total of 198 stomachs contained prey ...

   Meeting Document : WG-FSA-10/22 : Autor(es): D.W. Stevens, J. Forman and S. Hanchet (New Zealand)

10. An assessment of CCAMLR measures employed to mitigate seabird mortality in longlining operations for Dissostichus eleginoides around South Georgia

    Paper Title:  An assessment of CCAMLR measures employed to mitigate seabird mortality in ... longliner, the BF Cisne Verde, fishing in CCAMLR Subarea 48.3 during the 1996/97 season. In this study 61 ... lines were laid from March to May 1997 using the Spanish double-line method. In accordance with CCAMLR ... streamer line in mitigating incidental mortality of seabirds during night-time setting. Data were recorded ... CCAMLR Scheme of International Scientific Observation (Ashford et al., 1994). In the following year ... Kerguelen (Capdeville, 1996). The high rate found by Ashford et al. (1995) in 1994 was during a year ... higher in 1997, the year of this study, which may indicate that birds had other food sources available ... CCAMLR MEASURES EMPLOYED TO MITIGATE SEABIRD MORTALITY IN LONGLINING OPERATIONS FOR DlSSOSTlCHUS ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 217–230 : Autor(es): Ashford, J.R. and J.P. Croxall

Páginas