Search results
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Southern Ocean Network of Acoustics (SONA)
Abstract: Southern ocean processes are intimately linked to some of the most pressing challenges ... faced by society today: climate change, ocean acidification and the sustainable management of marine ... resources. To address these challenges we need to improve our understanding of the natural causes and ... consequences of Southern Ocean change. Sustained observations, which can only be large enough and maintained ...
Meeting Document : WG-EMM-13/17 Rev. 1 : Author(s): S. Fielding (United Kingdom), E. Josse (France), R. Kloser (Australia), R. O’Driscoll (New Zealand), C. Reiss (USA) and G. Skaret (Norway)
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Further progress on modelling the krill–predator dynamics of the Antarctic ecosystem
Abstract: This paper addresses work conducted on the Mori-Butterworth multi-species model of the ... Antarctic ecosystem subsequent to the Ulsan meeting of the IWC Scientific Committee. Points raised about the ... unable to fully utilise the primary production available. The precision of parameters estimated when ... of the model to available abundance estimates for crabeater seals. A list of topics for possible ...
Meeting Document : WG-EMM-06/19 : Author(s): M. Mori (Japan) and D.S. Butterworth (South Africa)
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Shedding new light on the life cycle of mackerel icefish in the Southern Ocean
in the north mature one year earlier than in the south. They have a much shorter life span and die after ... one year earlier than in the south. They have a much shorter life span and die after they have spawned ...
Meeting Document : WG-EMM-03/4 : Author(s): K.-H. Kock (Germany) and I. Everson (United Kingdom)
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Environmental response of upper trophic level predators reveals a system change in an Antarctic marine ecosystem
environment have significant potential to affect populations of Antarctic krill Euphausia superba, a keystone ... Georgia. Indices of population size and reproductive performance showed declines in all species and an ... increase in the frequency of years of low reproductive output. Changes in the population structure of krill ... , and its relationship with reproductive performance, suggest that the biomass of krill within the ...
Meeting Document : WG-EMM-01/21 : Author(s): K. Reid and J.P. Croxall (United Kingdom)
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Preliminary assessment of toothfish in Subarea 48.3
Abstract: As with the 2009 assessment of Subarea 48.3, there is still uncertainty as to why there ... were high numbers of the 2001 cohort in commercial catches in 2009 onwards. It is likely that it is ... due to a combination of a strong 2001 cohort and a change in selectivity for the commercial fleet, but ... it has not been possible to determine the relative importance of each explanation. Median log-normal ...
Meeting Document : WG-FSA-11/33 Rev. 1 : Author(s): T. Peatman, R.E. Mitchell, G. Parkes and D.J. Agnew (United Kingdom)
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Reproduction in the Antarctic icefish Champsocephalus gunnari and its implications for fisheries management in the Atlantic sector of the Southern Ocean
Abstract: Available information on key reproductive parameters of Champsocephalus gunnari has ... been reviewed and discussed in the light of existing conservation measures. Length at first spawning is ... the other South Atlantic fishing grounds. Spawning activities of Champsocephalus gunnari and those of ... other exploited species could be best protected by the establishment of permanent closed fishing season ...
Meeting Document : SC-CAMLR-VIII/BG/16 : Author(s): Delegation of Federal Republic of Germany
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The state of exploited fish stocks in the Southern Ocean - a review
until the season 1989/90. About two thirds of the catches have been taken in the Atlantic Ocean sector ... Indian Ocean sector. The fishery is regulated under the auspices of the Convention on the ‘Conservation ... of Antarctic Marine Living Resources’ (CCAMLR) for rile whole Southern Ocean since 1982 and under ... most heavily affected by fishing are those of Notothenia rossii in both sectors, Notothenia squamifrons ...
Meeting Document : SC-CAMLR-X/BG/13 : Author(s): Delegation of Germany
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Finfish research proposals for Subarea 48.6 by Koryo Maru 11 for 2012/13 (this is a revision of WG-SAM-12/12)
limited to Statistical Subarea 48.6. Preliminary assessments of Dissostichus spp. stocks in Subarea 48.6 ... north of 60°S (SSRUs 48.6A and 48.6G) and south of 60°S (SSRUs 48.6B, 48.6C, 48.6D and 48.6E) were ... analysis. The preliminary assessment indicates that the historic precautionary maximum catch limit of 200 ... tonnes of Dissostichus spp. for Subarea 48.6 north of 60°S is sustainable and precautionary, and suggests ...
Meeting Document : WG-FSA-12/30 : Author(s): C. Heiniken and R. Ball (South Africa)
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A revised assessment of Patagonian toothfish in Subarea 48.4
Abstract: The stocks of toothfish in Subarea 48.4 are currently divided, for assessment purposes ... , into northern and southern components. The northern component is assessed as a single species of D ... . eleginoides whilst the southern component is assessed as a combination of D. eleginoides and D. mawsoni. Both ... , covering the whole of the subarea, would be a more appropriate method for assessing the stocks than the ...
Meeting Document : WG-SAM-13/24 : Author(s): R. Scott (United Kingdom)
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Preliminary assessment of Patagonian toothfish in Subarea 48.4
Abstract: To date, the stocks of toothfish in Subarea 48.4 have been divided, for assessment ... purposes, into northern and southern components. The northern component is assessed as a single species of ... D. eleginoides whilst the southern component is assessed as a combination of D.eleginoides and D ... species specific assessments, covering the whole of the subarea, would be a more appropriate method for ...
Meeting Document : WG-FSA-13/31 : Author(s): R. Scott and V. Laptikohvsky (United Kingdom)