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  • 资源配置效率: 供应链优化:头部平台通过规模效应将采购成本降低35%,品控响应速度缩短至4小时(中小企业需72小时)。 流量分配不均:TOP5主播占据60%的流量,中小商家获客成本高达20元
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  • 资源配置效率: 供应链优化:头部平台通过规模效应将采购成本降低35%,品控响应速度缩短至4小时(中小企业需72小时)。 流量分配不均:TOP5主播占据60%的流量,中小商家获客成本高达20元
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  1. 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

    to four ranges including [-20 20], [2 16], [0.4 12] and without dB window (only 120kHz used ... from various identification methods, except for the estimates from [-20 20] identification window ... including [-20 20], [2 16], [0.4 12] and without dB window (only 120kHz used). Identification window of dB ... identification methods, except for the estimates from [-20 20] identification window and without dB window (only ...

    Meeting Document : SG-ASAM-2019/06 : Author(s): X. Yu, X. Wang, J. Zhang and X. Zhao

  2. Change in environmental conditions of the Southern Ocean observed by satellites and data-assimilating models between 1981 and 2019

    ocean fronts) from the same AVHRR observations; (4) sea ice concentration from microwave satellite ... environmental change across the Southern Ocean over the last 4 decades. Key results are: (1) warming of the ... the southern limit of the ACC except in the Ross Sea region; (4) decreasing chl-a and NPP in the Ross ...

    Meeting Document : WG-EMM-2019/39 : Author(s): M. Pinkerton

  3. Larval development and spawning ecology of euphausiids in the Ross Sea and its adjacent waters in 2004/05

    recruitment of larvae of euphausiids are discussed. (Plankton and Benthos Res., 4 (4) (2009): 135–146) Author ...

    Meeting Document : WG-EMM-10/P06 : Author(s): K. Taki, T. Yabuki, Y. Noiri, T. Hayashi and M. Naganobu

  4. Biological characteristics of Antarctic fish stocks in the Southern Scotia Arc region

    Antarctic species predominate in the fish fauna. Their species assemblages, however, differed to 55-60% from ... Antarctic species predominate in the fish fauna. Their species assemblages, however, differed to 55-60% from ...

    Meeting Document : WG-FSA-99/16 : Author(s): K.-H. Kock (Germany), C. Jones (USA) and S. Wilhelms (Germany)

  5. The development of the role of the WG-EMM Subgroup on Methods

    are 4 key areas; 1.to maintain the process of validation and checking of the existing CEMP database, 2 ... parameters at appropriate spatial and temporal scales and 4. to develop methods to take CEMP data forward as ...

    Meeting Document : WG-EMM-01/17 : Author(s): K. Reid (United Kingdom)

  6. Revised estimates of yield for Electrona carlsbergi based on a generalised version of the CCAMLR krill yield model

    the probabilities of the stock of Electrona carlsbergi becoming depleted over a 20 year period. These projections ... ): (i) choose γ1, so that the probability of the spawning biomass dropping below 20% of its pre-exploitation ... median level over a 20-year harvesting period is 10%; (ii) choose γ2, so that the median escapement over ... a 20-year period is 75%; (iii) select the lower of γ1 and γ2 as the level of γ for calculation of yield ...

    Meeting Document : WG-FSA-94/21 : Author(s): A.J. Constable and W.K. de la Mare (Australia)

  7. A RISK ASSESSMENT TO ADVISE ON STRATEGIES FOR SUBDIVIDING A PRECAUTIONARY CATCH LIMIT AMONG SMALL-SCALE MANAGEMENT UNITS DURING STAGE 1 OF THE STAGED DEVELOPMENT OF THE KRILL FISHERY IN SUBAREAS 48.1, 48.2, AND 48.3.

    selecting among Fishing Options 2, 3, and 4 are tradeoffs between the risks to predator populations and ... Option 2. Implementation of Fishing Option 4 will, relative to the other two options, substantially limit ... the spatial distribution of the fishery. Furthermore, since Fishing Option 4 would concentrate fishing ... level. Relative to Fishing Options 2 and 3, fishery performance under Option 4 is also poor, with ...

    Meeting Document : WG-EMM-08/30 : Author(s): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)

  8. Age and Length Growth of Champsocephalus gunnari, Lonnberg 1905 (Pisces, Chaenichthyidae, in the Area of Elephant Island, West Zone, Antarctica

    fine cutting technique. Through the reading of the growth rings the age classes corresponding to3, 4, 5 ... and 6 year old males and 3, 4 and 5 year old females were found. The growth curves were adjusted ...

    Meeting Document : WG-FSA-85/11 : Author(s): A.P. Tomo and E. Barrera-Oro (Argentina)

  9. The toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2002/03: New Zealand vessel summary

    south of about 72º S, and so effort was mainly focused instead on SSRUs 881A–C. In addition, SSRU 882E ... . Patagonian toothfish dominated the catches from 60 to 62° 30' S but Antarctic toothfish dominated ... 72º S, and so effort was mainly focused instead on SSRUs 881A–C. In addition, SSRU 882E was fished ... . Patagonian toothfish dominated the catches from 60 to 62° 30' S but Antarctic toothfish dominated catches ...

    Meeting Document : WG-FSA-03/44 : Author(s): M.L. Stevenson, S.M. Hanchet and P.L. Horn (New Zealand)

  10. An updated assessment of unicorn icefish (Channichthys rhinoceratus) in Division 58.5.2, based on results from the 2015 random stratified trawl survey

    (2 years) and long term (20 years) projections of unicorn icefish structure, abundance and yield ... for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. Short term projections ... indicate 2208 t for the 2015/16 season and 1689 t for the 2016/17 season, while long term projections (20 ... (2 years) and long term (20 years) projections of unicorn icefish structure, abundance and yield ...

    Meeting Document : WG-FSA-15/50 : Author(s): D. Maschette and J. Dell (Australia)

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