Search results
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Preliminary tag-recapture based population assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.4
Abstract: The biomass of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 is estimated ... from tagging returns to average 1109 tonnes since 2010, with a five-year (2015-2019) average biomass of ... 1187 tonnes. Applying the CCAMLR agreed precautionary assumption of average biomass across the time ... series and harvest rate of γ = 0.038, implies a 2019/20 yield of 45 tonnes using the 5-year average ...
Meeting Document : WG-FSA-2019/27 : Author(s): T. Earl and A. Riley
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Proposal to commission an independent review of the Secretariat’s data management systems
Abstract: Abstract The Secretariat manages a comprehensive, detailed set of independent or ... related databases which support the work of the Commission and give effect to Article XX of the CAMLR ... Convention. Since the establishment of CCAMLR 28 years ago, there has been no formal, in-depth audit of the ... the merits of an independent review of the Secretariat’s data management systems Author(s ...
Meeting Document : CCAMLR-XXIX/13 : Author(s): Secretariat
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Activity, seasonal site fidelity, and movements of Type-C killer whales between the Ross Sea, Antarctica and New Zealand
between the Ross Sea and New Zealand, but also emphasises the urgent need to re-evaluate the profile of ... , TCKW have been identified as one of the two top predator species in the Ross Sea most likely to be ... TCKW may use small-scale areas in this highly productive ecosystem intensely for a period of days to ... dives while in Terra Nova Bay (100-455 m) than on the northbound journey. A preliminary analysis of ...
Meeting Document : WG-EMM-15/52 : Author(s): R. Eisert (New Zealand), G. Lauriano, S. Panigada (Italy), E.N. Ovsyanikova, I.N. Visser, P.H. Ensor, R.J.C. Currey, B.R. Sharp and M.H. Pinkerton (New Zealand)
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Trophic niche of the Antarctic toothfish caught in SSRU 88.3 as inferred from fatty acids and stable isotopes
Abstract: To highlight ontogenetic and geographical variability in resource utilization of ... of toothfish and their potential prey (bycatch and stomach contents), captured in fisheries in the ... Ocean sector of the Antarctica during 2012–2017. We found significant differences in size distributions ... of regional toothfish stocks, demonstrating an ontogenetic movement into deeper water from shelf ...
Meeting Document : WG-FSA-18/21 : Author(s): C.-K. Kang, S.-G. Choi, H.Y. Kang, Y.-J. Lee, S. Chung and D.H. An
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Ecological games in space and time: the distribution and abundance of Antarctic krill and penguins
Abstract: The distribution and abundance of organisms are affected by behaviors, such as habitat ... , environmental conditions, and the biology of the species involved. Although extensive theoretical work has ... explored predator–prey dynamics, these models have not considered the impact of behavioral plasticity and ... of a spatial, dynamic ecological game between predators and prey using a life-history perspective. As ...
Meeting Document : WG-EMM-03/33 : Author(s): S.H. Alonzo, P.V. Switzer and M. Mangel (USA)
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Can trace element signatures in the otoliths of Dissostichus eleginoides record capture size?
Abstract: The elemental structure of growth increments in the otoliths of fish reflects the ... composition of water passing across the gills: as a result, elemental signatures can potentially be used to ... reconstruct the environmental history experienced by fish. To test whether the otolith elemental signatures of ... from the outer edges (which are laid down during the interval leading to capture) of otoliths taken ...
Meeting Document : WG-FSA-03/88 : Author(s): J.R. Ashford and C.M. Jones (USA)
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The Future of Antarctica Forum: distinguishing climate change impacts from other impacts in the Antarctic Peninsula
Abstract: The paper reports on the outcomes of the first Future of Antarctica Forum that ... representatives from the tourism and fishing industries, all of whom actively engaged in these discussions and ... of continued monitoring of the sensitive Antarctic Peninsula region and challenged Oceanites, because ... of its Antarctic Site Inventory project’s 22-year history monitoring this region, to ‘ distinguish ...
Meeting Document : CCAMLR-XXXV/BG/14 : Author(s): Submitted by Oceanites, Inc.
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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