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1. Density and biomass of Antarctic krill around South Shetland Islands using by 2-dB difference method

   Abstract:  The dB-difference and characteristics of krill aggregation inhabiting Subarea 48.1 ... , which includes the Elephant Island peripheries and the west and south of the South Shetland Islands ... was performed at seven stations. Using the difference between the dB values of two volume ... Antarctic krill (4.9 to 12.0 dB) and fish (-4.0 to-0.2 dB). The distributions and mean Sv of krill ...

   Meeting Document : SG-ASAM-17/04 : Autor(es): S.-G. Choi, K. Lee and D. An

2. Abundance and richness of key Antarctic seafloor fauna correlates with modelled food availability

   sinks through the water column. However, the nature and strength of this pelagic–benthic coupling and ... its influence on the structure and diversity of seafloor communities is unclear, especially around ... Antarctica where ecological data are sparse. Here we show that the strength of pelagic–benthic coupling along ... the East Antarctic shelf depends on both physical processes and the types of benthic organisms ...

   Meeting Document : WS-SM-18/P01 : Autor(es): J. Jansen, N.A. Hill, P.K. Dunstan, J. McKinlay, M.D. Sumner, A.L. Post, M.P. Eléaume, L.K. Armand, J.P. Warncock, B.K. Galton-Fenzi and C.R. Johnson

3. Spatio-temporal variability in the winter diet of larval and juvenile Antarctic krill, Euphausia superba, in ice-covered waters

   and a major fisheries resource. The winter survival of age class 0 (AC0) krill is susceptible to ... their first winter. However, our understanding of their overwintering diet and its variability is ... limited. We studied the spatio-temporal variability of the diet in 4 cohorts of AC0 krill in the Northern ... volumes of copepods. Many of the prey species found in the stomachs were sea ice-associated. Our results ...

   Meeting Document : WG-EMM-18/P18 : Autor(es): F.L. Schaafsma, D. Kohlbach, C. David, B.A. Lange, M. Graeve, H. Flores and J.A. van Franeker

4. An ecological risk assessment of current conservation measures for krill fishing in East Antarctica (CCAMLR Divisions 58.4.1 and 58.4.2)

   has a high likelihood of achieving CCAMLR’s objectives in this region. This paper outlines a ... involved in any redevelopment of a commercial krill (Euphausia superba) fishery in CCAMLR Divisions 58.4.1 ... and 58.4.2, off the coast of East Antarctica, and to evaluate whether the current management procedure ... relatively simple derivation of the risk assessment framework to assess whether the current conservation ...

   Meeting Document : WG-EMM-18/37 : Autor(es): N. Kelly, L. Emmerson, S. Kawaguchi, C. Southwell and D. Welsford

5. Progress report on the joint research for Dissostichus spp. in Subarea 88.3 by the Republic of Korea and New Zealand in 2018/19

   –883_P9. Due to extreme ice conditions covering the southern part of 88.3, Janas (NZL) was not able to ... conduct its part of the survey. The total catch of D. mawsoni was 63,840 kg comprising 2,526 individuals ... similar in research blocks 883_1, 883_3 and 883_4 with the range of 0.1110–0.1571, but much lower in ... research block 883_5, 883_P8, 883_P9 with the range of 0–0.0185. Tagging rate and tag overlap in Subarea ...

   Meeting Document : WG-SAM-2019/11 : Autor(es): Delegations of the Republic of Korea and New Zealand

6. Characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) through 2018/19

   and SSRUs 88.2AB) together with biological characteristics of the catch of Antarctic toothfish through ... the 2019 season. The implementation of the Ross Sea Region Marine Protected area in December of 2017 ... , concentrated fishing on the slope south of 70° S on the traditional fishing grounds, with some expansion of ... respect to the current management areas. The median and 90 th percentile of the scaled length ...

   Meeting Document : WG-FSA-2019/07 : Autor(es): J. Devine, S. Parker and A. Dunn

7. Preliminary tag-recapture based population assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.4

   Abstract:  The biomass of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 is estimated ... from tagging returns to average 1109 tonnes since 2010, with a five-year (2015-2019) average biomass of ... 1187 tonnes. Applying the CCAMLR agreed precautionary assumption of average biomass across the time ... series and harvest rate of γ = 0.038, implies a 2019/20 yield of 45 tonnes using the 5-year average ...

   Meeting Document : WG-FSA-2019/27 : Autor(es): T. Earl and A. Riley

8. Descriptive analysis of mesopelagic backscatter from acoustic data collected in the Ross Sea

   Abstract:  This report presents results from a pilot study to investigate the use of acoustics to ... quantify spatial and vertical distribution of acoustic backscatter in the upper 1000 m of the water column ... . There were clear spatial patterns in the amount and type of mesopelagic backscatter observed. There was ... much more backscatter in the upper 1000 m and a wider variety of mark types north of 67° S. Common mark ...

   Meeting Document : WG-EMM-06/11 : Autor(es): R.L. O’Driscoll (New Zealand)

9. Estimating food consumption of marine predators: Antarctic fur seals and macaroni penguins

   Abstract:  1. Estimating food consumption is central to defining the ecological role of marine ... , growth, diet, life history and the activity budgets of marine predators to estimate population energy ... requirements and food consumption. 2. Two species of marine predators (Antarctic fur seal Arctocephalus gazella ... examples to test the algorithm. A sensitivity analysis showed that estimates of prey consumed were most ...

   Meeting Document : WG-EMM-02/23 : Autor(es): I.L. Boyd (United Kingdom)

10. Terra Nova Bay: hot spot in marine and terrestrial biodiversity, knowledge and functioning of the ecosystem

    Abstract:  The Terra Nova Bay area is particularly valuable for science due to the presence of ... . From an oceanographic perspective, the area is characterised by the occurrence of the Terra Nova Bay ... polynya, a crucial region for the formation of the High Salinity Shelf Water (HSSW), formed by the ... salination of the Circumpolar Deep Water (CDW), that penetrates onto the continental shelf of the Ross Sea ...

    Meeting Document : WS-MPA-11/14 : Autor(es): S. Torcini, M. Vacchi, S. Aliani, G. Bavestrello, A. Bergamasco, G. Budillon, B. Calcinai, G. Catalano, R. Cattaneo-Vietti, C. Cerrano, M. Chiantore, S. Corsolini, R. Bargagli, A. Dell’Anno, G. di Prisco, G. Fusco, S. Focardi, L. Gugliemo, G. Lauriano, P. Luporini, O. Mangoni, S. Olmastroni, F. Pezzo, E. Pisano, L. Ghigliotti, P. Povero, S. Puce, A. Pusceddu, E. Rusciano, M. Saggiomo, V. Saggiomo, M.C. Gambi, S. Schiaparelli, G. Spezie, C. Verde, P. Del Negro (Italy)

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