Résultats de la recherche

1. Some components of uncertainty in the CCAMLR 2000 acoustical survey of krill

   Abstract:  Quickly studied and quantified were sources of uncertainty in the CCAMLR 2000 ... acoustical estimate of krill abundance in FAO statistical area 48. The variance in system calibration was ... evaluated in relation to the effects of variant water temperature and salinity on sound speed, sound ... absorption, and beam characteristics. Uncertainty in krill target strength (TS) was estimated using a ...

   Meeting Document : WG-EMM-00/49 : Auteur(s): D.A. Demer (USA)

2. TOWARDS THE BALANCED STOCK ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA

   toothfish in the Ross Sea. One of them, the CASAL model, (Dunn & Hanchet, 2007; Bull et al., 2007) is ... ) data. Besides that, some sorts of data, e.g. tagging data, are used in these models in quite different ... information was also quite different: while in TISVPA all sources of data gave rather coherent signals about ... the stock (Vaslilyev et al., 2007), in CASAL the solution was mostly supported by signals from tagging ...

   Meeting Document : WG-SAM-08/08 : Auteur(s): D. Vasilyev and K. Shust (Russia)

3. Uncertainty in acoustic surveys of Antarctic krill

   Abstract:  Studied were four primary sources of uncertainty in krill density estimates from ... acoustic surveys. The variance in system calibration with a standard sphere was evaluated in relation to ... with a standard sphere were estimated as-1.2 dB and ±0.3 dB, respectively. Uncertainty in estimating ... krill TS was then investigated through in situ measurements (Hewitt and Demer, 1991). The TS data ...

   Meeting Document : WG-EMM-95/72 : Auteur(s): Demer, D.A.

4. Quantitative assessment of benthic fauna and assemblages in the Heard Island and McDonald Islands region

   Abstract:  A benthic sampling program in the Heard Island and McDonald Islands (HIMI, CCAMLR ... communities in the region. The areas sampled were selected for the purpose of comparing and reporting regional ... differences in faunal composition and consist of a number of seamounts and submarine plateaus. The ... macrobenthic invertebrate fauna of the region is moderate in diversity and, while many taxa are endemic, is ...

   Meeting Document : WG-EMM-10/25 : Auteur(s): T. Hibberd, D.C. Welsford, A.J. Constable, K. Moore and S. Doust (Australia)

5. Brief report on results of experimental harvest regime for the exploratory fishery for crab in the area of the South Orkney Islands (CCAMLR Subarea 48.2) during the 2009/10 season

   " Tamango " in CCAMLR zone, the searching operations were carried out in the area of the ... harvest regime for the exploratory fishery for crab by traps was carried out for the first time in ... -catch in traps, one can assume that highly expressed seasonality is present in vital activity of benthos ... in the area of the Southern Orkney Islands. Probably, the absence of crabs at the in March was ...

   Meeting Document : WG-FSA-10/44 : Auteur(s): Yu.V. Korzun and S.E. Anosov (Ukraine)

6. The distribution of spatial management and Antarctic krill catch across pelagic bioregions in the Southern Ocean

   measures in the Southern Ocean.  We used the GIS in combination with catch data and the results of the 2007 ... Antarctic krill fishery, which accounted for 92% of catch biomass in the Southern Ocean in 2010/11 (CCAMLR ... in the occurrence of target species and level of fishing interest. There were important differences ... between pelagic bioregions in terms of the fraction of the bioregion that was open to fishing, and the ...

   Meeting Document : WG-EMM-12/15 : Auteur(s): S.M Grant, S.L. Hill and P. Fretwell (United Kingdom)

7. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13

   Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 covering SSRUs 88.2C, D, E, F, G, and H (SSRUs ... ), down-weighting the age data (R4), and having annual age length keys in the north (R5). The stock ... in 2010, 2011 and 2012 suggest a much lower biomass, and data from tags released from 2004 to 2009 ... biomass than previously estimated, mainly due to the signal in the last three years of tag data. These are ...

   Meeting Document : WG-FSA-13/52 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

8. Discrimination of two species of grenadier (Gadiformes, Macrouridae), Macrourus whitsoni and M. caml, in the Ross Sea region of the Southern Ocean (CCAMLR Subareas 88.1 and 88.2) on the basis of otolith morphometrics

   Abstract:  Two species of grenadier are predominatly taken as bycatch in the Ross Sea region ... fish taken as bycatch in the Ross Sea on New Zealand fishing vessels in the 2011–12 fishing year were ... in the sample were 34.5–65.1 cm total length (TL), and 12.0–24.0 cm pre-anal length (PAL); lengths of ... M. caml in the sample were 34.5–81.5 cm TL and 11.0–30.0 cm PAL. Both males and females were ...

   Meeting Document : WG-FSA-14/63 : Auteur(s): M.H. Pinkerton, C. Ó Maolagáin, J. Forman and P. Marriott (New Zealand)

9. Predation release of Antarctic silverfish (Pleuragramma antarctica) in the Ross Sea

   adeliae) at breeding colonies in the southern Ross Sea more than doubled from about 235 000 to more than ... contributed to the increase in Adélie penguin numbers. This paper brings together information on the biomass ... predation release hypothesis. In particular, the examination of 422 Antarctic toothfish stomachs showed that ... the amount of silverfish consumed annually by Adélie penguins in this region. This result was ...

   Meeting Document : WG-EMM-15/53 : Auteur(s): M.H. Pinkerton, P. Lyver, D. Stevens, J. Forman, R. Eisert and S. Mormede (New Zealand).

10. Spanish research proposal for the 2016/17 season in Division 58.4.1

    Abstract:  In the 2012/13 fishing season Spain began the implementation of a multi-annual Research ... Plan for Divisions 58.4.1 and 58.4.2 in order to estimate local biomass of Dissostichus spp. by means ... , results have to be analyzed in the coming months but some doubt about the reliability of data could be ... express due to accessibility problems by the ice cover and traces of IUU fishing found in the proposed ...

    Meeting Document : WG-SAM-16/10 : Auteur(s): Delegation of Spain

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