Search results
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Preliminary results of otolith elemental composition analysis of Dissostichus spp. in Subarea 48.2
Abstract: In order to explore aspects related to the structure of population units and habitat ... use of Dissostichus spp. within CCAMLR Subarea 48.2, the elemental composition of nuclear and marginal ... samples of otoliths collected during the first season of the research carried out by the Chilean ... Delegation in Subarea 48.2 of CCAMLR during the 2015/16 fishing season. The otoliths through laser ablation ...
Meeting Document : WG-FSA-17/30 : Author(s): Delegation of Chile
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An integrated assessment model for Antarctic krill: progress update
under development for Antarctic krill are compared to estimates from CMIX and TrawlCI using the same net ... trawl data. The different configurations of the integrated model were varied based on whether acoustic ... data or net densities were used as model inputs for the biomass data, on how the biomass data were ... weighted, by whether natural mortality was estimated by the model or pre-assigned a value of 0.8, and by ...
Meeting Document : WG-EMM-12/27 : Author(s): D. Kinzey, G. Watters and C. Reiss (USA)
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CCAMLR-XXIX
) to the16th Annual Session of the Commission for the Conservation of Southern Bluefin Tuna(20 to 23 October ...
Meeting
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Reports on biological information of toothfish with special reference to bycatch, depredation and spawning dynamics in Division 58.4.4 a & b by Shinsei maru No. 3 during 2008–14 seasons
Abstract: This report arranged the biological information with special reference to bycatch ... , depredation and spawning dynamics in Division 58.4.4 a & b during 2008-14 seasons in response to the ... recommendations in the last WG-SAM meeting and their related issues. D. eleginoides (TOP) was highest both in ... weight and number, accounting for 93% and 76% of the total catch, respectively, among total of 16 species ...
Meeting Document : WG-FSA-15/21 : Author(s): K. Taki and T. Ichii (Japan)
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Influence of krill availability on humpback whale breeding success
Abstract: The abundance of the Antarctic krill (Euphausia superba) has been declining in the ... western Antarctic Peninsula (WAP), probably as a consequence of the effects of the considerable increase ... in the sea surface temperature observed in the region. Thus, the performance (reproduction and ... survival) of the krill consumers may be compromised. In the present study, we investigated the reproductive ...
Meeting Document : WG-EMM-18/P15 : Author(s): E. Seyboth, F. Félix, M.-A. Lea, L. Dalla Rosa, G. Watters, K. Reid and E. Secchi
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Mincing, mealing and batching: waste management strategies aimed at reducing seabird interactions with trawl vessels
to a paste before it was discharged reduced the number of seabirds around the vessels. The first ... trial was on a mid-water trawler targeting hoki (Macruronus novaezelandiae), and the experiment on this ... all waste and reducing discharge to sump water. The second vessel was bottom-trawling for squid ... (Nototodarus sloanii). There was no meal plant on board and the mealed treatment was replaced with a batching ...
Meeting Document : WG-FSA-07/42 : Author(s): E. Abraham and J. Pierre (New Zealand)
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Bird Exclusion Devices for use in CCAMLR Longline Fisheries
Paragraph 9 of Conservation Measure 25-02 'Minimisation of the incidental mortality of ... seabirds in the course of longline fishing or longline fishing research in the Convention Area' ... ; requires the use of a 'device to discourage birds from accessing baits during the haul of longlines ... , based on the analysis of seabird by-catch on vessels with bird exclusion devices (BEDSs) of different ...
Page : Site Section: Fisheries
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IMPACTS OF CLIMATE CHANGE ON ANTARCTIC MARINE ECOSYSTEMS: A CALL FOR ACTION
Abstract: Climate change has emerged as an important topic in Antarctic research over the past ... decade, but little in the way of policy or operational change has resulted at CCAMLR. Over the past 50 ... years major alterations of the ecological workings of the Southern Ocean have been underway. These ... changes are accelerating as time passes, including regional changes in sea ice persistence and extent. The ...
Meeting Document : CCAMLR-XXVII/BG/27 : Author(s): Submitted by ASOC
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Illegal, unreported and unregulated (IUU) fishing
In the 1990’s IUU fishing for toothfish in the Convention Area was estimated to be over six times ... the catch reported by authorised fishing vessels. At that time, CCAMLR was aware that other Antarctic ... marine stocks had not recovered from overfishing in the 1970’s and identified that addressing IUU fishing ... was a critical need. Although it is believed that the level of IUU fishing in the Convention Area has ...
Page : Site Section: Compliance
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Determination of Antarctic krill acoustic back-scattering cross-section
/ Description: When determining the density krill of concentrations it is necessary to know the acoustic cross ... -section of back-scattering of krill. The target strength can be determined in situ by measuring the echo ... signal from one specimen resolved by the hydroacoustic instrument. By calculating the mean level of the ... directivity diagramme of the antenna and the mean level of the standardized echo signal, it is possible to ... When determining the density krill of concentrations it is necessary to know the acoustic cross ... -section of back-scattering of krill. The target strength can be determined in situ by measuring the echo ... signal from one specimen resolved by the hydroacoustic instrument. By calculating the mean level of the ... directivity diagramme of the antenna and the mean level of the standardized echo signal, it is possible to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 141-152 : Author(s): Protaschuk, V.A. and T.A. Lukashova