Résultats de la recherche

1. Comparison of NASC values calculated by swarm-based and grid-based acoustic data processing methods for Antarctic krill density estimation

   Abstract:  The one nautical mile integrated Nautical Area Scattering Coefficient (NASC) values of four surveys in 48.1 fishing area were calculated using both the swarm-based and conventional grid-based acoustic data processing methods. All parameter settings were consistent with the reports of SG

   Meeting Document : SG-ASAM-18/04 Rev. 1 : Auteur(s): X. Yu, X. Wang and X. Zhao

2. A plan for Antarctic krill survey with a scientific broadband echosounder onboard R/V Kaiyo-maru in the CCAMLR Division 58.4.1 during 2018/19 season

   Abstract:  To investigate the utility of broadband sound for Antarctic krill acoustic surveys, we will conduct echo sampling with a scientific broadband echosounder EK80 (Simrad-Kongsberg) during a dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season by Japanese research vessel,

   Meeting Document : SG-ASAM-18/05 : Auteur(s): K. Amakasu, K. Abe, R. Matsukura, T. Mukai and H. Murase

3. Multinational large-scale krill synoptic survey in CCAMLR Area 48 in 2019 – survey plan and protocol for consideration by SG-ASAM 2018

   Abstract:  The objective for the Multinational Large-Scale Krill Synoptic Survey in CCAMLR area 48 in 2019 is to provide an updated estimate of the biomass of Antarctic krill (Euphausia superba) used in models to estimate sustainable yield. The planned survey follows, as close as possible, the

   Meeting Document : SG-ASAM-18/07 : Auteur(s): B.A. Krafft, O.A. Bergstad, T. Knutsen, G. Skaret and G. Macauley

4. Preliminary results on the distribution and abundance of Antarctic krill (Euphausia superba) in the Weddell Sea, Southern Ocean

   Abstract:  Hydroacoustic data were collected to study the distribution and abundance of Antarctic krill relative to their predators in the Southern Ocean during annual logistic summer trips and dedicated research winter trips to Antarctica on board the South African RV SA Agulhas II. The 38, 120

   Meeting Document : SG-ASAM-18/09 : Auteur(s): F.W. Shabangu

5. Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method

   Abstract:  The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which includes the Elephant Island peripheries and the west and south of the South Shetland Island, were estimated using an acoustics survey. Acoustic data were collected with 38 and 120 kHz from April 13 to

   Meeting Document : SG-ASAM-18/08 : Auteur(s): S. Choi, K. Lee and D. An

6. Predicting fishing ground accessibility in the Antarctic Weddell Sea

   Abstract:  Sea ice is a major constraint of fishery performance in the Southern Ocean seasonal sea ice zone. We use sea ice concentration data from 2002-2017 that cover the wider Weddell Sea to establish statistical models of (i) accessibility, i.e. the probability that a particular area is

   Meeting Document : WG-SAM-18/01 : Auteur(s): H. Pehlke, K. Teschke and T. Brey

7. Estimating nest-level phenology and reproductive success of colonial seabirds using time-lapse cameras

   Abstract:  We wish to draw the attention of Members to an online application of the R code published in the attached paper. The web-based app ‘photoR’ (https://jefferson.shinyapps.io/photor2) implements  the methods of the paper and provides summary outputs for direct input to CEMP A6b and A9

   Meeting Document : WG-EMM-18/P01 : Auteur(s): J.T. Hinke, A. Barbosa, L.M. Emmerson, T. Hart, M.A Juáres, M. Korczak-Abshire, G. Milinevsky, M. Santos, P.N. Trathan, G.M. Watters and C. Southwell

8. Impacts of rising sea temperature on krill increase risks for predators in the Scotia Sea

   Abstract:  Climate change is a threat to marine ecosystems and the services they provide, and reducing fishing pressure is one option for mitigating the overall consequences for marine biota. We used a minimally realistic ecosystem model to examine how projected effects of ocean warming on the

   Meeting Document : WG-EMM-18/P02 : Auteur(s): E.S. Klein, S.L. Hill, J.T. Hinke, T. Phillips and G.M. Watters

9. Antarctic krill and ecosystem monitoring survey off the South Orkney Islands in 2018

   Abstract:  This report presents activities and preliminary results from a krill and ecosystem monitoring survey conducted in February 2018 at the South Orkney Islands. Author(s):  B.A. Krafft, G. Skaret, L.A. Krag and R. Pedersen Title:  Antarctic krill and ecosystem monitoring survey off the South

   Meeting Document : WG-EMM-18/P03 : Auteur(s): B.A. Krafft, G. Skaret, L.A. Krag and R. Pedersen

10. Draft proposal for multi-Member research on the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) from 2018/19 to 2021/22

    Abstract:  Exploratory fishing for toothfish (Dissostichus spp.) in East Antarctica (Divisions 58.4.1 and 58.4.2) began in 2003. Robust stock assessments and catch limits according to CCAMLR decision rules remain to be determined for these Divisions. WG-FSA-16/29 outlined the first multi-member

    Meeting Document : WG-SAM-18/17 : Auteur(s): Delegations of Australia, France, Japan, Republic of Korea and Spain

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