Search results
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Further development and progress towards evaluation of an Antarctic toothfish (Dissostichus mawsoni) stock model for the Ross Sea
model for the assessment of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 ... adequately. In both of the spatial models, there was a lack of useful data on area splits, migration rates ... Abstract: This report outlines the development of a Bayesian sex and age structured population ... either two or three discrete areas, with migrations of fish between areas. The 2-area model appeared to ...
Meeting Document : WG-FSA-SAM-05/12 : Author(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
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Modelling the circumpolar distribution of Antarctic toothfish (Dissostichus mawsoni) habitat suitability using correlative species distribution modelling methods
to CCAMLR’s management of this species. In this paper the use of Maxent models with fishery catch ... Abstract: Understanding and predicting the distribution of Antarctic toothfish (Dissostichus ... suitability is explored. Maxent is highly sensitive to biased sampling effort and the selection of background ... data. Hence, the influence of background data selection on Maxent model predictions using two ...
Meeting Document : WG-FSA-15/64 : Author(s): CCAMLR Secretariat
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Using carapace measurements to determine the sex of Antarctic krill (Euphausia superba)
populations. The equations have been applied to fur seal diet studies in the South Shetlands but until now ... validating the use of discriminant functions to determine sex of krill based on carapace length and width and ... independently derives sex-specific regression models for krill collected in the South Shetlands. Allometric ... derived from mature krill in years following significant recruitment events with large proportions of ...
Meeting Document : WG-EMM-05/26 : Author(s): J.D. Lipsky, M.E. Goebel, C.S. Reiss and V. Loeb (USA)
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Sensitivity analysis identifies high influence sites for estimates of penguin krill consumption on the Antarctic Peninsula
models of standing krill biomass and the design of a sustainable krill fishery for the Scotia Sea ... . Antarctic krill (Euphausia superba) is a significant component of diet for penguins breeding in this region ... in krill predation estimates. We use a comprehensive database of Antarctic penguin abundances to ... of pygoscelid penguins breeding in this region. We find that a high quality survey of Zavodovski ...
Meeting Document : WG-EMM-12/P02 : Author(s): H.J. Lynch, N. Ratcliffe, J. Passmore, E. Foster and P. N. Trathan
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Estimating density and biomass of Antarctic krill around South Sheltland Islands using the 2-dB difference method
Abstract: The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... includes the Elephant Island peripheries and the west and south of the South Shetland Island, were ... 2016 and 38 and 200 kHz from March 6 to 14 in 2017. Krill were collected by the commercial middle trawl ... biomass of Antarctic krill around South Sheltland Islands using the 2-dB difference method Microsoft Word ...
Meeting Document : WG-EMM-17/08 : Author(s): S.-G. Choi, K. Lee and D. An
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New data on spawning, hatching and growth of the Kerguelen Islands Champsocephalus gunnari shelf stock
have been observed in mass only once during the studied period and are fishes of the 1988 cohort first ... Abstract: Combined studies on the inner shelf and outer shelf of the Kerguelen islands (1989/90 ... annual cohort. Strong differences in abundance of larvae are observed yearly. One cohort seems dominant ... in the samples along the study. It would explain the previouly observed three years cycle. Spawners ...
Meeting Document : WG-FSA-94/9 Rev. 1 : Author(s): G. Duhamel (France)
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FLAG STATUS OF SOME VESSELS ON THE NCP-IUU VESSEL LIST
Abstract: FLAG STATUS OF SOME VESSELS ON THE NCP-IUU VESSEL LIST In June 2010, the EU forwarded a ... to the report, proceedings to de-register the vessels commenced in April and concluded on 15 June ... June 2010. 3. Since that time, however, a number of reports have been received regarding the activities ... of some of these vessels: (i) Bigaro was sighted by France fishing inside Division 58.5.1 of the ...
Meeting Document : SCIC-10/04 : Author(s): Secretariat
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Potential impacts of climate change on the Southern Ocean ecosystem
in surface waters of the Southern Ocean around Antarctica, threatening this highly productive system ... little studied) CO2 sink in the Southern Ocean, resulting in a series of feedback loops accelerating ... with severe and permanant collapse. Pivotal to this process is a diminution of the important (but ... consequences. Author(s): R.G. Chittleborough (Australia) Title: Potential impacts of climate change on the ...
Meeting Document : CCAMLR-VIII/BG/21 : Author(s): R.G. Chittleborough (Australia)
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Modelling the circumpolar distribution of Antarctic toothfish using correlative species distribution modelling methods
used to predict the circumpolar distribution of habitat suitability for Antarctic toothfish. Potential ... are the types of CCAMLR data (i.e. presence of the species and/or attributes) and modelling algorithms ... suggested and highlighted for discussion. Preliminary results are provided to demonstrate the application of ... : Modelling the circumpolar distribution of Antarctic toothfish using correlative species distribution ...
Meeting Document : WG-FSA-14/65 : Author(s): L.M. Robinson, K. Reid (Secretariat)
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Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method
Abstract: The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... includes the Elephant Island peripheries and the west and south of the South Shetland Island, were ... estimated using an acoustics survey. Acoustic data were collected with 38 and 120 kHz from April 13 to 24 in ... 2016 and 38 and 200 kHz from March 6 to 14 and 38 and 120 kHz on April 27 and May 5 in 2017. Krill were ...
Meeting Document : SG-ASAM-18/08 : Author(s): S. Choi, K. Lee and D. An