Search results
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Report on fish by-catch during exploratory fishing activities in Division 58.4.3a (Elan Bank) between 2008 and 2018
Abstract: We report on objective 2 “inform estimations of the distribution, relative abundance ... , and life history of the main bycatch species” of the suspended research plan on Patagonian toothfish ... analyzed bycatch composition in number and biomass during the period 2008-2018 to investigate the inter ... -annual variations in bycatch patterns, spatial distribution and biological parameters of the main bycatch ...
Meeting Document : WG-FSA-2019/56 : Author(s): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier
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A comparative morphometric analysis of sagittal otoliths of three icefishes (Channichthyidae) in Antarctic waters
Abstract: In the present study a comparative morphometric analysis of sagittal otoliths was ... the continental shelf and slope around Elephant Island (Subarea 48.1) and the South Orkney Islands ... differences between the left and right sagittae in BSDs, a univariate and multivariate ANOVA and MANOVA were ... from the 20 harmonics analyzed were homoscedastic and normal, and showed very low level of correlation ...
Meeting Document : WG-FSA-18/47 : Author(s): G. Plaza, C. Rodríguez-Valentino and P.M. Arana
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Report on fish by-catch during research fishing activities in Division 58.4.4b between 2008 and 2018
inform bycatch mitigation measures” of the ongoing research plan on Patagonian toothfish (Dissostichus ... composition in number and biomass during the period 2008-2018 to investigate the inter-annual variations in ... bycatch patterns, spatial distribution and biological parameters of the main bycatch species. Macrourus ... spp., Antimora rostrata and skates (mostly Amblyraja taaf) were the three dominant species caught as ...
Meeting Document : WG-FSA-2019/53 : Author(s): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier
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Estimates of abundance of Dissostichus eleginoides and Champsocephalus gunnari from the random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2 for 2018
Abstract: The annual random stratified trawl survey (RSTS) of 2018 around Heard Island and ... McDonald Island (HIMI) in Division 58.5.2 took place from the end of March to the end of April, with the ... completion of 163 stations plus eight extra fine mesh hauls. The survey was conducted on the FV Atlas Cove ... . Sampling protocols such as the design and the duration of the hauls were similar to recent surveys, but ...
Meeting Document : WG-FSA-18/55 : Author(s): G. Nowara, T. Lamb and P. Ziegler
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Density and abundance estimates of baleen whales recorded during the 2019 DY098 cruise in the Scotia Sea around South Georgia and the South Sandwich Islands
Abstract: We use cetacean sightings data collected from the northern and eastern Scotia Arc ... (CCAMLR Subareas 48.3 and 48.4) during the 2018/19 international synoptic krill survey to provide ... (Balaenoptera physalus) and for all other baleen whale species sighted. The survey was designed to collect data ... on the abundance of krill and so was not optimised for deriving design-based cetacean abundance ...
Meeting Document : WG-EMM-2019/27 : Author(s): M. Baines, M. Reichelt, C. Lacey, S. Pinder, S. Fielding, N. Kelly, E. Murphy, P. Trathan and J.A. Jackson
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Change in environmental conditions of the Southern Ocean observed by satellites and data-assimilating models between 1981 and 2019
Abstract: We provide a summary of environmental change in the Southern Ocean over the period of ... satellite observaton (1981 to present). The environmental data we consider are: (1) chlorophyll-a ... ) from the AVHRR series of NOAA satellites (1981–2019); (3) spatial gradient of SST (as an indicator of ... ocean fronts) from the same AVHRR observations; (4) sea ice concentration from microwave satellite ...
Meeting Document : WG-EMM-2019/39 : Author(s): M. Pinkerton
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Advances are urgently needed in providing regular estimates of krill stock status based on the available data
Abstract: CCAMLR currently manages the krill fishery in subareas 48.1 to 48.4 using an arbitrary ... measure (the trigger level) which was established in 1991 and is “not related to the status of the krill ... stock”. At the same time, CCAMLR recognises that “advances are urgently needed” specifically because the ... trigger level is not related to the status of the stock. The establishing terms of reference for WG-EMM ...
Meeting Document : WG-EMM-2019/28 : Author(s): S. Hill, J. Hinke, N. Ratcliffe, P. Trathan and G. Watters
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Report of the UK Groundfish Survey at South Georgia (CCAMLR Subarea 48.3) in January/February 2019
Abstract: The UK undertook a bottom trawl survey of CCAMLR sub-Area 48.3 on the FV Sil between ... the 27thth January and 5th February 2019. A total of 73 random and representative hauls were completed ... in 2017, but is comparable with the long term average. The highest catches were on the moraine banks ... of the two northern strata and at the western end of Shag Rocks, with one high catch recorded in the ...
Meeting Document : WG-FSA-2019/20 : Author(s): S. Gregory, P. Hollyman, T. Earl, A. Clement, J. Visagie, L. Featherstone and M. Belchier
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Preliminary evaluation of two feedback management strategies for the krill fishery in Subareas 48.1–48.3
Abstract: The Scientific Committee has previously used results from the Krill-Predator-Fishery ... Model (KPFM2, also known as Foosa) to consider the risks that implementing various management strategies ... for the krill fishery will compromise the Commission’s ability to achieve the objectives in Article II ... of the Convention. Management strategies for the krill fishery are currently comprised of an overall ...
Meeting Document : SC-CAMLR-XXXVII/BG/12 : Author(s): Delegation of the USA
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Exploration of CPUE standardisation variances in the Ross Sea (Subareas 88.1 and 88.2A South of 70°s) Antarctic toothfish (Dissostichus mawsoni) exploratory longline fishery
fisheries without integrated assessments in the CPUE by seabed area method to estimate stock biomass in the ... interim of collecting sufficient tag recaptures. Here, we address the two questions: (1) which unit of ... trend and magnitude of catch rates. Using data from the Ross Sea Antarctic toothfish fishery, we ... (hooks/cluster) with Generalised Linear Models (GLMs). The model with total hook numbers was preferred ...
Meeting Document : WG-SAM-2019/25 : Author(s): D. Maschette, S. Wotherspoon and P. Ziegler