Résultats de la recherche

1. Revised research plan for toothfish in Division 58.4.4 b by Shinsei maru No. 3 in 2014/15

   Abstract:  In this document, we revise stock status assessments of D. eleginoides in research ... using CASAL models in research block C are described in a separated document. The estimated stock size ... in block C was 709, 401 and 850 tonnes in CPUE analogy method, Petersen method and CASAL Len_1 model ... (vulnerable biomass in 2013), respectively. The stock sizes of D. eleginoides in block D is estimated at 948 ...

   Meeting Document : WG-FSA-14/21 : Auteur(s): Delegation of Japan

2. Effects of variability in prey abundance on reproduction and foraging in chinstrap penguins (Pygoscelis antarctica)

   optimally balance investment in current and future offspring. However, when trying to optimize investment in ... contend with large interannual fluctuations in prey availability and hence the cost of chick provisioning ... somewhere along the continuum between maintaining constant investment in foraging effort between years and ... letting chick provisioning fluctuate or holding chick provisioning constant and varying investment in ...

   Meeting Document : WG-EMM-06/P6 : Auteur(s): D.A. Croll, D.A. Demer, R.P. Hewitt, J.K. Jansen, M.E. Goebel and B.R. Tershy (USA)

3. Results of the seventh Ross Sea shelf survey to monitor abundance of Antarctic toothfish in the southern Ross Sea, January 2018, and notification for research in 2018/19

   abundance from a well-designed survey would be a useful input into the Ross Sea stock assessment model. In ... this paper we provide results of the seventh annual survey in the time series. The objectives of this ... survey included monitoring sub-adult (≤ 110 cm TL) toothfish in the south of SSRUs 881.J and 881.L in the ... southern Ross Sea (Strata A–C) using standardised gear in a standardised manner; and monitoring trends in ...

   Meeting Document : WG-SAM-18/10 : Auteur(s): D. Stevens, X. Fu, S. Mormede and S. Parker

4. Revised research plan for toothfish in Division 58.4.4b by Shinsei maru No. 3 in 2015/16

   Abstract:  In this document, we revise stock status assessments of D. eleginoide s in research ... results of reanalysis using CASAL models in research block 58.4.4b_1 are described in a separated document ... . The estimated stock size in block 58.4.4b_1 was 510, 336 and 333 tonnes in CPUE analogy method ... , Petersen method and CASAL OB_1b model (vulnerable biomass in 2014), respectively. The stock sizes of D ...

   Meeting Document : WG-FSA-15/20 : Auteur(s): Delegation of Japan

5. Revised research plan for toothfish in Division 58.4.4 a and b by Shinsei Maru No. 3 in 2011/12

   Abstract:  A tagging survey in SSRUs B and C in Division 58.4.4 a & b was initiated in the ... structure, size, movement and growth of Dissostichus spp. in the centred area of Division 58.4.4 a & b ... . An approximate stock biomass level of Dissostichus spp. in the survey area (SSRUs B and C in Division ... analyzed at WG-FSA in 2010 (1580 and 3036 ton), although the 95 % confidence intervals were wide due to ...

   Meeting Document : WG-FSA-11/15 Rev. 1 : Auteur(s): K. Taki, T. Iwami and M. Kiyota (Japan)

6. Results of the groundfish survey carried out in CCAMLR Subarea 48.3 in January 2010

   Abstract:  In January 2010, the UK carried out the annual groundfish survey in CCAMLR Sub-Area ... , representing an increase in effort overall compared with surveys carried out in 2008 and 2009 on the same ... dominated the population, 2+ and 1+ sized fish were also present, and in larger proportions than in 2009. A ... and low availability of krill to mackerel icefish in the area (evidenced by dietary analysis) in 2009 ...

   Meeting Document : WG-FSA-10/38 : Auteur(s): R.E. Mitchell, M. Belchier, S. Gregory, L. Kenny, J. Nelson, J. Brown and L. Feathersone (UK)

7. By-catch in the Australian fisheries in Division 58.5.2

   Abstract:  This paper presents bycatch information for the Australian fisheries in Divisions ... 58.5.2 for the 2003/2004 and 2004/2005 seasons. Bycatch in the trawl fisheries was low, generally less ... than 1% of the total catch (target plus bycatch). Higher percentage bycatch rates occurred in trawling ... grounds where the fishing effort and therefore target catch was low. Bycatch in the longline fisheries was ...

   Meeting Document : WG-FSA-05/68 : Auteur(s): E.M. van Wijk (Australia)

8. Abundance and trends in the breeding population of Adélie penguins (Pygoscelis adeliae) in the western Ross Sea

   in the number of Adélie penguin breeding pairs at colonies in the western Ross Sea.  High angle ... 2012, and counted.  On average 870,465 pairs of Adélie penguins breed in the western Ross Sea each ... , 2001-2010.  In contrast, a single declining trend line best represented the number of breeding pairs at ... indicative of direct density dependence in the number of pairs returning to the colony each year.  In recent ...

   Meeting Document : WG-EMM-13/30 : Auteur(s): P. O’B. Lyver, M. Barron, K.J. Barton, S. Gordon (New Zealand), D. Ainley, A. Pollard (USA), P.R. Wilson and M.H. Pinkerton (New Zealand)

9. Variability in krill length distribution in 48.1 derived from data collected by scientific observers

   Abstract:  Information on the length distribution of krill in the catch, and the spatial and ... temporal patterns of krill length in the population is essential to assess krill population status and ... generalised additive mixed models (GAMM) to evaluate the spatial and temporal patterns of length in Antarctic ... krill (Euphausia superba) in CCAMLR Subarea 48.1 derived from data collected by scientific observers ...

   Meeting Document : WG-EMM-15/16 : Auteur(s): P. Ziegler, S. Kawaguchi D. Welsford and A. Constable (Australia)

10. Mitigation of Macrourus by-catch in research block 58.4.1_6 and estimation of Macrourus biomass and sustainable catch in Divisions 58.4.1 and 58.4.2

    Abstract:  Macrourus spp. are the major by-catch species in the exploratory toothfish fishery in ... exploratory fishing for D. mawsoni on Macrourus spp. in Division 58.4.1 and 58.4.2 in general and in research ... block 58.4.1_6 in particular. We investigate the distribution of D. mawsoni and Macrourus spp. catch ... rates in research block 58.4.1_6, and conclude that the current research grid includes fishing locations ...

    Meeting Document : WG-FSA-17/23 : Auteur(s): D. Maschette, P. Burch, P. Yates and P. Ziegler

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