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1. 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 : Author(s): R.L. O’Driscoll (New Zealand)

2. 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 ... unique marine and terrestrial flora and fauna and the high diversity at both species and community level ... . 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 ...

   Meeting Document : WS-MPA-11/14 : Author(s): 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)

3. DEVELOPMENT OF SPATIALLY EXPLICIT AGE-STRUCTURED POPULATION DYNAMICS OPERATING MODELS FOR ANTARCTIC TOOTHFISH IN THE ROSS SEA

   plus group of the proportions-at-age catch data were less than ideal. Model estimates of proportions ... other factors to quantify risk and uncertainties for management of the Ross Sea Antarctic toothfish ... program allows implementation of an aggregate movement model for use with large numbers of areas as a ... mortality), as well as movement processes defined as the product of a set of preference functions that are ...

   Meeting Document : WG-SAM-09/18 : Author(s): A. Dunn, S. Rasmussen and S. Hanchet (New Zealand)

4. WG-FSA-SAM-05

   and R. Hillary (United Kingdom) WG-FSA-SAM-05/8 Stratification of catch-at-length data using tree ... WG-FSA-SAM-05/1 Agenda WG-FSA-SAM-05/10 Descriptive analysis of the Antarctic toothfish (Dissostichus ... . Maxwell (New Zealand) WG-FSA-SAM-05/11 Computer program for the calculation and validation of Verhoeff ... of an Antarctic toothfish (Dissostichus mawsoni) stock model for the Ross Sea A. Dunn, D.J. Gilbert ...

   Meeting

5. Further development of coarse- and medium-scale spatially explicit population dynamics operating models for Antarctic toothfish in the Ross Sea region

   proportions-at-age observations were generally good in most models, although fits to the plus group of the ... proportions-at-age catch data were less than ideal. Model estimates of proportions-mature appeared to be ... program allows implementation of an aggregate movement model for use with large numbers of areas as a ... mortality), as well as movement processes defined as the product of a set of preference functions that are ...

   Meeting Document : WG-FSA-12/44 : Author(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

6. Information on the spawning of Dissostichus mawsoni from Subareas 88.1 and 88.2 in the 2003/04 season

   . The onset of spawning in D. mawsoni is in December and continues until at least June, in both Sub ... Abstract:  Data on maturity, gonadosomatic index (GSI) and length weight of Antarctic Toothfish ... -areas 88.1 and 88.2, and spawning occurs on isolated geographic features north of the main Antarctic ... shelf areas. One of the mature fish caught in Sub Area 88.2 had originally been tagged in McMurdo Sound ...

   Meeting Document : WG-FSA-04/34 : Author(s): G.J. Patchell (New Zealand)

7. The use of predator-derived krill length-frequency distributions to calculate krill target strength

   predators to provide a length-frequency distribution of krill at times when it is possible to run automated ... krill biomass at times of the season hitherto unavailable from ship-board scientific surveys. Author(s ... ecosystem based approach to resource management. We propose a method using krill sampled from the diet of ... operations. This will allow a robust estimate of krill abundance to be estimated from acoustic data. Changes ...

   Meeting Document : WG-EMM-00/42 : Author(s): K. Reid and A.S. Brierley (United Kingdom)

8. Performance of an acoustic sonde design

   is widely recognized. At a U.S. GLOBEC workshop in 1991, one of the considered problems was measuring ... Abstract:  The potential of multi-frequency acoustic technology for quantifying fish and plankton ... would be expedient to use at least three and perhaps as many as 8-10 frequencies in the range 38-420 kHz ... frequencies are chosen. Each frequency represents the resonant condition of a circular piston transducer with ...

   Meeting Document : WG-EMM-95/09 : Author(s): Foote, K.G.

9. Krill distribution variability and fishery conditions within the local ground of Subarea 48.3 in June 1991

   the period of observations (29.05.91–03.06.19) at variable krill distribution characteristics due to ... coefficient of possible catch per fishing day (over 24 hours) is only V = 0.13. At considerable variations of ... Abstract:  Experiments on estimation of krill transport by a current and its distribution ... characteristics variability were carried out within a local ground of Subarea 48.3 in the fleet operation area. It ...

   Meeting Document : WG-EMM-95/04 : Author(s): Kasatkina, S.M.

10. Acoustic manual for the krill synoptic survey in 2019

    during the 2000 survey. This document is a draft survey manual, produced at the recommendation of the ... Abstract:  The previously presented document at the 2018 ASAM WG meeting (ASAM-18-07) described a ... collaborative efforts of Norway, Association of Responsible Krill fishing companies (ARK: companies from Norway ... , Korea, China and Chile), the United Kingdom, Ukraine, Korea and China, all of whom have confirmed a ...

    Meeting Document : WG-EMM-18/12 : Author(s): G. Macaulay, G. Skaret, T. Knutsen, O.A. Bergstad and B.A. Krafft

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