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1. Long-term change in zooplankton communities of the Southern Ocean between 1997 and 2018: implications for fisheries and ecosystems

   productivity, sea-surface temperature (SST), mixed layer depth, sea ice and the spatial gradient of SST (as an ... ), Foraminifera, Fritillaria spp., Oithona similis and pteropods. Trend analysis suggests that the environmental ... –0.83% per year averaged across the Southern Ocean, and with much higher rates of increase in some ... regions. In contrast, the environmental suitability for pteropods is predicted to be decreasing in the ...

   Meeting Document : WG-EMM-2019/66 : Автор(ы): M.H. Pinkerton, M. Decima, J. Kitchener, K. Takahashi, K. Robinson, R. Stewart and G.W. Hosie

2. Fishing and conservation in southern waters

   with the 1970's and 1980's, when most fisheries were subsidized, economic considerations and ... stocks we re implemented only from 1989 onwards. There is evidence that some fish stocks have started to ... appears to be remote at present. The way forward is likely to be a single-species model for the krill ... Southern Ocean is likel y to be much larger than current catches. The fishery potential of krill and ...

   Meeting Document : SC-CAMLR-XII/BG/11 : Автор(ы): Delegation of Germany

3. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during 1990/91 austral summer

   krill into this zone. The total biomass over the survey region was estimated to be 1.59 ± 0.45 million t ... the neritic and nearshore zones. This indicates that slope frontal features may be important for the ... (95% confidence limit), of which 1.22 ± 0.42 million t was concentrated in the fishing grounds (" ... that krill biomass in this region had been lower than expected until early February 1991. As for ...

   Meeting Document : WG-KRILL-92/26 : Автор(ы): T. Ichii, H. Ishii and M. Naganobu (Japan)

4. AND DOMESTIC SUBANTARCTIC FISHERIES BY THE AUSTRALIAN ANTARCTIC DIVISION AND THE AUSTRALIAN FISHERIES MANAGEMENT AUTHORITY

   . Australia considers the use of such a performance management system to be essential in ensuring that high ... quality data continues to be collected by SISO. Author(s):  O’Regan, K., Welsford, D., Robertson, T., Lamb ... the Australian Fisheries Management Authority (AFMA), with technical and data management support from ... increase in sophistication, the tasks required to be completed by observers are increasing in number and ...

   Meeting Document : TASO-08/05 : Автор(ы): O’Regan, K., Welsford, D., Robertson, T., Lamb, T.

5. IDENTIFICATION OF DATA QUALITY METRICS FOR TAGGING DATA SELECTION

   to identify those metrics that are most informative with respect to the identification of good ... bootstrap analysis indicates that the range of data quality metrics associated with known good tagging data ... quality metrics may be most powerful in distinguishing the trips considered to have good tagging data ... Benford's Law, and the variation in toothfish catch rates.This reduced set of data quality metrics ...

   Meeting Document : WG-SAM-09/19 : Автор(ы): D.A.J. Middleton and A. Dunn (New Zealand)

6. Movement and growth of tagged toothfish around South Georgia and Shag Rocks (Subarea 48.3)

   toothfish pot vessel in international waters at that latitude in 2001. Author(s):  T.R. Marlow, D.J. Agnew ... CCAMLR observer trips. Of these, about 900 have also been injected with either Strontium Chloride or ... and 2001, and have been at liberty from one to two years. Four fish were tagged and recaptured from ... groundfish surveys may not yet be large enough to be available to the longline fishery and there have been no ...

   Meeting Document : WG-FSA-02/28 : Автор(ы): T.R. Marlow, D.J. Agnew and I. Everson (United Kingdom)

7. Interannual variations of water thermochaline structure on South Georgia Island, South Orkney Islands and Shetland Islands shelves

   characteristics, T,S diagrams' typification has been realized for hydrological stations carried out in the ... could be used when analysing krill aggregations' distribution and density for the period of years ... , 1985, 1989). As water structure within those areas was considered to be the consequence of ...

   Meeting Document : WG-EMM-00/34 : Автор(ы): P. Chernyshkov, V. Shnar, O. Berezhinsky and I. Polischuk (Russia)

8. In situ target strength measurements of Antarctic zooplankton (Euphausia superba and Salpa thompsoni) at 120 khz and 200 khz, corroboration of scattering models, and a statistical technique for delineating species

   scattering is from each animal's spheroidal nucleus. Consistent with the measurements of encaged krill ... , indicating that these frequencies may be more useful for distinguishing salps from krill. Data were collected ... both species. The individual TS measurements were collected at 120 kHz with a split-beam echosounder ... cumulative distributions (CDF's) of Δσbs derived from the differences in abs measurements at two ...

   Meeting Document : WG-Krill-94/12 : Автор(ы): D.A. Demer and R.P. Hewitt (USA)

9. Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longline

   situations reported elsewhere in the world. In addition to providing methodology insights that could be used ... depredated resource can be especially challenging when depredation occurs on fish in the marine environment ... depredated hooks. From this difference and using the fishing effort (number of hooks), we estimated that 575 ... ± 35 t and 739 ± 87 t of Patagonian toothfish were respectively depredated by killer whales and sperm ...

   Meeting Document : WG-FSA-14/10 : Автор(ы): N. Gasco, P. Tixier, G. Duhamel and C. Guinet (France)

10. Integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery (Division 58.5.2)

    eleginoides) at the Heard and the McDonald Islands (Division 58.5.2) with data until the start of August 2013 ... indicating that a separation of the trawl sub-fisheries is appropriate. The scenario with estimating a YCS ... , we recommend that the catch limit for the 2013/14 and 2014/15 seasons be set at 3005 tonnes. Author(s ... stock assessment estimates and projected catch limits that satisfy the CCAMLR decision rules. Re ...

    Meeting Document : WG-FSA-13/24 : Автор(ы): P. Ziegler, S. Candy and D. Welsford (Australia)

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