Search results
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Methodology for automated spatial sea ice summaries in the Southern Ocean
performance in the Southern Ocean. Sea ice can limit access to fishing grounds, for both commercial fishing ... sea ice concentration data in the Southern Ocean, and relate it to data on commercial fishing vessel ... operations around the Antarctic continental margin. A spatial view is used to characterise the spatial ... characterise the inter-annual patterns within a target area. Both can be viewed relative to ice conditions ...
Meeting Document : WG-FSA-14/54 : Author(s): S.J. Parker, S.D. Hoyle, J.M. Fenaughty and A. Kohout (New Zealand)
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Proposal to strengthen the monitoring and control of transhipments
strengthen the monitoring and control of transhipments in the Convention Area. The amendments would apply the ... requirements of CM 10-02 to the carrier vessels of Contracting Parties, establish a CCAMLR Record of Carrier ... Vessels under CM 10-09 for carrier vessels flagged to non-Contracting Parties, and allow for the ... monitoring of these vessels as they operate in the Convention Area. Author(s): Delegation of the USA Title ...
Meeting Document : CCAMLR-XXXVII/18 : Author(s): Delegation of the USA
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Demography and population trends of the Atlantic yellow-nosed albatross
Abstract: The Atlantic Yellow-nosed Albatross (Thalassarche chlororhynchos) breeds only at the ... Tristan da Cunha archipelago and Gough Island in the central South Atlantic Ocean, and is threatened by ... mortality from longline fisheries operating in the South Atlantic. Demographic data have been collected from ... two study colonies on Gough Island and Tristan da Cunha for 20 years. Annual variation in the number ...
Meeting Document : WG-FSA-03/37 : Author(s): R. Cuthbert (United Kingdom), P.G. Ryan, J. Cooper (South Africa) and G. Hilton (United Kingdom)
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The reliability of VHF telemetry data for measuring attendance patterns of marine predators: a comparison with Time Depth Recorder data
Abstract: VHF radiotelemetry data has been used for over thirty years to monitor the behavior ... patterns of otariid seals. These data have been used in a wide variety of ways, from characterizing the ... attendance patterns. Yet the accuracy of VHF data has never been appropriately evaluated. Our study compares ... -collected Time-and-Depth Recorder (TDR) data used as the ‘true’ measurement of time spent onshore. Within ...
Meeting Document : WG-EMM-15/P05 : Author(s): A.D. Lowther, H. Ahonen, G. Hofmeyr, W.C. Oosthuizen, P.J. Nico De Bruyn, C. Lydersen and K. Kovacs
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Latitudinal variation of demersal fish assemblages in the western Ross Sea
February and March 2004 and 2008 in the Ross Sea, and around seamounts and islands just to the north at 66 ... °S. The distribution and abundance of 65 species collected in these surveys were examined to ... determine if demersal fish communities varied throughout the area, and what environmental factors might ... influence this. Species accumulation with sample frequency did not reach an asymptote, but the rate of new ...
Meeting Document : WG-FSA-10/P03 : Author(s): M.R. Clark, M.R. Dunn, P.J. McMillan, M.H. Pinkerton, A. Stewart and S.M. Hanchet
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The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
approach for maintaining ecological relationships and providing for the recovery of depleted populations in ... food webs supporting fisheries is proposed. This paper addresses the following general questions for ... taking the ecosystem approach in managing fisheries: (i) how might fisheries impact incidentally on an ... ecosystem, (ii) what should be the conservation objectives for predators of fished species, and (iii) what ...
Meeting Document : WG-EMM-12/P04 : Author(s): A.J. Constable
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Characterisation of Muraenolepis species by-catch in the CCAMLR Convention Area
throughout the CCAMLR Convention Area. There are seven known species in the genus, but more work on the ... taxonomy of the group is needed and the number of species is uncertain. The few biological studies ... published suggest a relatively fast growing, semelparous, life history with a maximum age of 11 years. The ... estimate of K from the growth function for specimens assumed to be M. evseenkoi is much higher than for ...
Meeting Document : WG-FSA-12/50 : Author(s): S. Parker, P. McMillan and P. Marriott (New Zealand)
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Interannual variation in the summer diet of Adélie penguin (Pygoscelis adeliae) at Edmonson Point
, in the Ross Sea, Antarctica, to study the feeding ecology of this species for the Commission for the ... Conservation of Antarctic Marine Living Resources (CCAMLR) Ecosystem Monitoring Program. The study took place ... Island in 2001. Mean diet composition varied from year to year and between the two locations in 2001 ... . Meal size for chicks was found to be higher during the crèche than the guard period and males were ...
Meeting Document : WG-EMM-04/38 : Author(s): S. Olmastroni, F. Pezzo, I. Bisogno and S. Focardi (Italy)
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Age, growth and size at sexual maturity of Macrourus carinatus from the CCAMLR fisheries in division 58.5.2
1993. The estimated range of ages was 4 – 25 years. von Bertalanffy growth parameters were calculated ... for both sexes combined, resulting in values of: L8 = 635 mm, K = 0.088 and t0 =-1.8. The size at ... operations in the Heard Island region in 2000. The size at which 50% of the fish population is mature, L50 ... was 417 mm total length and the size at which 50% of the fish population have spawned for the first ...
Meeting Document : WG-FSA-02/48 : Author(s): E.M. van Wijk, R. Williams and A.J. Constable (Australia)
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Krill distribution variability and fishery conditions within the local ground of Subarea 48.3 in June 1991
characteristics variability were carried out within a local ground of Subarea 48.3 in the fleet operation area. It ... is shown that krill transport by wat4er flow across the fishing ground results in variation of fished ... krill aggregations distribution, and thus, in unstable indices of fishing vessels activity. During the ... the period of observations (29.05.91–03.06.19) at variable krill distribution characteristics due to ...
Meeting Document : WG-EMM-95/04 : Author(s): Kasatkina, S.M.