Search results
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Characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) through 2018/19
and SSRUs 88.2AB) together with biological characteristics of the catch of Antarctic toothfish through ... the 2019 season. The implementation of the Ross Sea Region Marine Protected area in December of 2017 ... , concentrated fishing on the slope south of 70° S on the traditional fishing grounds, with some expansion of ... respect to the current management areas. The median and 90 th percentile of the scaled length ...
Meeting Document : WG-FSA-2019/07 : Author(s): J. Devine, S. Parker and A. Dunn
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Towards a validation of ageing in mackerel icefish (Champsocephalus gunnari) – can we estimate age more accurately?
Abstract: Age estimates of mackerel icefish from different laboratories obtained during a CCAMLR ... older than 3 or 4 years were aged. These differences could not be reconciled at the end of the exchange ... . A second age determination workshop on mackerel icefish to improve the accuracy of age determination ... was agreed upon at the last meeting of the ‘Working Group on Fish Stock Assessment’. Our report ...
Meeting Document : WG-FSA-05/23 : Author(s): K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)
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Experimental acoustic survey of icefish resources in Subarea 48.3, 2005
Abstract: This report describes the activities and preliminary results of the research carried ... behalf of UK authorities. Survey Objectives The primary objectives of the proposed survey were to ... distribution of icefish. • Assess precision of AUDOS estimates of crab density. Secondary survey objectives ... were to: • ‘Ground-truth ‘ AUDOS estimates of crab density using comparisons with bottom trawls ...
Meeting Document : WG-FSA-05/79 : Author(s): M. Belchier, M. Collins (United Kingdom), R. O’Driscoll (New Zealand), S. Clarke and W. Reid (United Kingdom)
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RESULTS OF INVESTIGATIONS ON ANTARCTIC TOOTHFISH D. MAWSONI NORMAN, 1937 (PERCIFORMES,NOTOTHENIIDAE) FEEDING IN SUBAREA 48.6 SSRU E DURING THE 2008/09 SEASON
Abstract: For the first time, the investigations on feeding of Antarctic toothfish (Dissostichus ... mawsoni) from the bottom longline catches in the Lazarev Sea were carried out. The analysis of food ... of both sexes include icefish (Chionobathyscus dewitti), Antarctic squid (Mesonychoteuthis hamiltoni ... ), and grenadier (Macrourus whitsoni). During the investigation period the total indices of fullness of ...
Meeting Document : WG-FSA-09/25 : Author(s): A.F. Petrov and V.A. Tatarnikov (Russia)
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DIRECT EFFECTS OF CLIMATE CHANGE ON THE ANTARCTIC KRILL FISHERY
thought of as being indirect, for example through distributional changes of fish populations, changes in ... evidence of direct effects of the changing physical environment – the duration of sea ice cover- on the ... seasonal behaviour of the region’s largest fishery, that for Antarctic krill. Declining sea ice cover in ... the main krill fishing grounds has resulted in greater accessibility of krill stocks to the fishing ...
Meeting Document : WG-EMM-09/P06 : Author(s): S. Kawaguchi, S. Nicol and A.J. Press
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A spatial analysis of CEMP data in Area 48 to support work on feedback management in the krill fishery
Abstract: CEMP data from different sites in Area 48 were used to compare patterns of inter-annual ... variability as a function of the site location to examine the spatial scale over which CEMP data that have ... combined standardised indices (CSI) of summer CEMP parameters were generally positive and the patterns of ... inter-annual variability of sites in Subreas 48.1 showed an increased level of concordance in the period ...
Meeting Document : WG-EMM-16/09 : Author(s): CCAMLR Secretariat
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By-catch of morid cods (Gadiformes: Moridae) in the CCAMLR area and adjacent areas during commercial fishing and research surveys
distributions, size composition and abundance of morids in the CCAMLR and adjacent areas. The main goal is to ... detection of areas and depths of their aggregations, by reveal of presence/absence of spatial and vertical ... migrations and by study of their seasonal and multi-annual variations. Results will be used for preparation ... of conservation measures allowing for preservation these vulnerable by-catch species from irreparable ...
Meeting Document : WG-FSA-16/12 : Author(s): A. Orlov and I. Gordeev
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Developing a carbon-budget trophic model of the Ross Sea, Antarctica: work in progress
Abstract: We report on the development of a carbon-budget trophic-model of the Ross Sea. We ... provisionally defined the food web of the Ross Sea as having the following functional compartments: birds, seals ... heterotrophs, water column zooplankton (ciliates, heterotrophic flagellates, mesozooplankton), three groups of ... column, ice, and benthic). The simple trophic model requires well over a hundred parameters, each of ...
Meeting Document : WG-EMM-05/18 : Author(s): M. Pinkerton, S. Hanchet, J. Bradford-Grieve and P. Wilson (New Zealand)
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Further development and progress towards evaluation of an Antarctic toothfish (Dissostichus mawsoni) stock model for the Ross Sea
Abstract: This report outlines the development of a Bayesian sex and age structured population ... model for the assessment of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 ... and 88.2), and initial progress towards evaluation of spatially explicit models. Three model scenarios ... 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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Population, breeding, diet and conservation of Crozet shag Phalacrocorax [atriceps] melanogenis at Marion Island, 1994/95 to 2002/03
Abstract: The number of Crozet shags or cormorants Phalacrocorax [atriceps] melanogenis breeding ... mean number of pairs at colonies also decreased and was significantly related to the overall number of ... birds breeding in any given season. The decreases coincided with a period of warming and reduced ... precipitation at Marion Island and with a decrease in the number of gentoo penguins Pygoscelis papua breeding ...
Meeting Document : WG-EMM-03/17 : Author(s): R.J.M. Crawford, J. Cooper, B.M. Dyer, A.C. Wolfaardt, D. Tshingana, K. Spencer, S.L. Petersen, J.L. Nel, D.G. Keith, C.L. Holness, B. Hanise, M.D. Greyling and M. du Toit (South Africa)