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1. An outline of narrowband echosounder survey methods to estimate biomass of Antarctic krill in CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru

   Abstract:  Japanese multidisciplinary survey with a focus on biomass estimation of Antarctic krill will be conducted in CCAMLR Division 58.4.1 during 2018/19. The biomass estimation will be conducted according to the up-to-date CCAMLR standard protocol. The first standardized survey was conducted

   Meeting Document : SG-ASAM-18/02 : Autor(es): K. Abe, K. Amakasu, R. Matsukura, T. Mukai and H. Murase

2. Revised outline of the dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru

   Abstract:  A dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season will be conducted by Japanese research vessel, Kaiyo-maru. No krill biomass has been estimated in the Division since Australia carried out BROKE in 1996. There are two main objectives of our survey: (1) estimation

   Meeting Document : SG-ASAM-18/03 : Autor(es): H. Murase, K. Abe, R. Matsukura, H. Sasaki and T. Ichii

3. Evaluation on the performance of echosounder on a fishing vessel using maximum seabed backscattering

   Abstract:  The performance of echo sounder system is critical for using acoustic data collected from fishing vessel to estimate Antarctic krill biomass. Acoustic data from three surveys (2015, 2016 and 2018) collected at a relatively fixed location with bottom depth around 200 m were used to

   Meeting Document : SG-ASAM-18/06 : Autor(es): X. Wang, X. Yu and X. Zhao

4. 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 : Autor(es): X. Yu, X. Wang and X. Zhao

5. 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 : Autor(es): K. Amakasu, K. Abe, R. Matsukura, T. Mukai and H. Murase

6. 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 : Autor(es): B.A. Krafft, O.A. Bergstad, T. Knutsen, G. Skaret and G. Macauley

7. 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 : Autor(es): F.W. Shabangu

8. Asteroidea

   Common Name:  Starfishes nei Species Code:  STF AphiaID:  123080 Rank:  Order

   Species

9. Lithodidae

   Common Name:  King crabs, stone crabs nei Species Code:  KCX Family:  Lithodidae AphiaID:  106737 Rank:  Family

   Species

10. 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 : Autor(es): S. Choi, K. Lee and D. An

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