Résultats de la recherche
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Effects of different harvesting strategies on the stock of Antarctic icefish Champsocephalus gunnari around South Georgia
Abstract: The effects of a number of harvesting strategies on the Antarctic icefish ... years after a good recruitment,- pulse fishing at an interval of 3 years with no fishing in between;- a ... shift in partial recruitment values due to changes in net selectivity. For the projections recruitment ... was assumed to fo11wed the historical pattern. Pulse fishing prove to be the least preferable ...
Meeting Document : SC-CAMLR-VIII/BG/47 : Auteur(s): Delegation of Federal Republic of Germany
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Time series of Antarctic krill estimates around the South Shetland Islands from 2013 to 2019
Subarea 48.1 is submitted with accompanying description of the acoustic survey and data analysis ... . Distribution of Antarctic krill for the 2013/14 to 2015/16 and the 2017/18 to 2018/19 fishing seasons were ... mapped by the Chinese F/V Fu Rong Hai to understand the interannual variations of Antarctic krill around ... the South Shetland Islands, one of the major fishing ground for Antarctic krill in Area 48. Acoustic ...
Meeting Document : SG-ASAM-2019/04 Rev. 1 : Auteur(s): X. Yu, X. Wang, X. Zhao, J. Zhang, G. Fan, Y. Ying and J. Zhu
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Aligning toothfish fishery status with the CCAMLR regulatory framework
Abstract: The nomenclature or status assigned to individual toothfish fisheries in the CAMLR ... Convention Area is intended to be guided by CCAMLR’s regulatory framework. However, the status of toothfish ... fisheries and the regulatory framework has become increasingly disconnected in many fisheries throughout the ... . This disconnect has led to confusion within the Scientific Committee, Commission, and stakeholder ...
Meeting Document : WG-FSA-2019/66 : Auteur(s): C.D. Jones
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Indicative trends in by-catch of sharks in the CAMLR Convention Area
Abstract: Conservation Measure 32-18 on the conservation of sharks specifies that “directed ... fishing on shark species in the Convention Area for purposes other than scientific research, is prohibited ... trends in shark by-catch in the CAMLR Convention Area using information reported by vessels and ... scientific observers from the 1996–2017 fishing seasons. While there appear to be substantial gaps in the ...
Meeting Document : WG-FSA-18/63 Rev. 1 : Auteur(s): C.D. Jones
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Comparison of krill density estimated with swarm-based and dB-difference method using acoustic data collected by Chinese fishing vessel participating in the 2019 Area 48 survey
Abstract: To address the effect of various identification methods on krill biomass estimates ... , comparison on the swarm-based and dB-difference (Sv 120kHz-Sv 38kHz) identification method were made using ... the acoustic data collected around the South Shetland Islands in Subarea 48.1 by the Chinese fishing ... vessel F/V Fu Rong Hai during the 2019 Area 48 survey. Identification window of swarm-based template were ...
Meeting Document : SG-ASAM-2019/06 : Auteur(s): X. Yu, X. Wang, J. Zhang and X. Zhao
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Breeding numbers and success of Eudyptes penguins at Marion Island, and the influence of arrival of adults
Penguins, over 26 and 22 years respectively, suggesting over-wintering conditions may influence the ... proportions of birds breeding. For both species the time of arrival of females for breeding, and for ... Rockhopper Penguins the mass of females on arrival, was significantly related to breeding success. Therefore ... significantly correlated with that of females. Although both species had low weights on arrival after the El ...
Meeting Document : WG-EMM-05/38 : Auteur(s): R.J.M. Crawford, J. Cooper, B.M. Dyer and L.G. Underhill (South Africa)
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Foraging patterns in the Antarctic shag (Phalacrocorax bransfieldensis) at Harmony Point, Antarctica
reduce the extension of the foraging trips which in years of scarce food availability may no result in ... Abstract: During the 1995/96 and 1996/97 summer seasons the foraging pattern of the Antarctic ... usually foraged once a day; females early in the morning and males when their partners returned to the ... nests. During the rearing period the parents incremented the number of daily foraging trips usually ...
Meeting Document : WG-EMM-04/22 : Auteur(s): R. Casaux and A. Baroni (Argentina)
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Modelling egg and larval transport of Antarctic toothfish (Dissostichus mawsoni) in the East Antarctic region: preliminary result using satellite data
eddy activity) covering 2011-2018, we developed the particle tracking model to investigate egg and ... larval transport of the Antarctic Toothfish in the East Antarctic region. This paper presents the ... 2-year simulation. From the result of the BB region, while strong self retention on the BB was ... observed in the experiment A-1, the majority of particles were advected eastward in the experiment A-2. A ...
Meeting Document : WG-FSA-2019/63 : Auteur(s): M. Mori, K. Mizobata, T. Okuda and T. Ichii
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Stomach contents of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea region in 2010 and a comparison with 2003
data suggested there had been no change in the diet of large (> 100 cm TL) D. mawsoni between the ... Abstract: The stomach contents of 273 Dissostichus mawsoni captured by bottom longline in the ... Ross Sea region during the 2010 summer fishing season were analysed. The D. mawsoni sampled were caught ... items, of which 13 contained only digested prey, leaving 185 stomachs for analysis. The majority of ...
Meeting Document : WG-FSA-10/22 : Auteur(s): D.W. Stevens, J. Forman and S. Hanchet (New Zealand)
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Analysis of the sea-ice concentration (SIC) in Subarea 48.6, research blocks 2, 3, 4 and 5 with sea-surface temperature (SST) and statistical models
Abstract: An Analysis of the sea ice concentration (SIC) in research blocks 2,3,4, and 5 of ... , the SIC in 2019 was the highest for the last 4 years (2016-2019). For research block 5, the SIC in ... 2019 was also as high as in 2016 but around the west of block 5 the SIC in 2019 was much lower than in ... 2016. The lower SST anomalies corresponds to the higher SICs in 2019 both in research blocks 4 and 5 ...
Meeting Document : WG-SAM-2019/15 : Auteur(s): T. Namba, R. Sarralde, H. Pehlke, K. Teschke, T. Brey, S. Hain, T. Ichii, T. Okuda, S. Somhlaba and J. Pompert