Resultados de la búsqueda
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Does large-scale ocean circulation structure life history connectivity in Antarctic toothfish (Dissostichus mawsoni)?
: successfully spawning fish spend only a part of their adult life history in the Ross Sea; areas in the eastern ... (Dissostichus mawsoni) in the Southeast Pacific Basin (SPB) and Ross Sea, with a life history structured by the ... environmental heterogeneity, yet the chemistry in otolith nuclei, deposited during early life, showed no ... differences. Age data showed only adult fish in catches on the Pacific-Antarctic Ridge in the SPB; and ...
Meeting Document : WG-FSA-12/P02 : Autor(es): J. Ashford, M. Dinniman, C. Brooks, A. Andrews, E. Hofmann, G. Cailliet, C. Jones and N. Ramanna
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Information on incidental mortality of seabirds and other protected species in the US West Coast pelagic longline fishery
vessels operating in the North Central-Eastern Pacific targeting broadbill swordfish (Xiphias gladius) and ... Abstract: Although the IATTC does not have an established observer program in its longline ... subject to pertinent US regulations as well as under the purview of IATTC. In response to a CCAMLR query ... in 2002, IATTC informed CCAMLR of this US observer program. Information about seabird bycatch ...
Meeting Document : WG-FSA-03/39 : Autor(es): D. Petersen, L. Enriquez and S. Fougner (USA)
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Environmental variability and the behavioural dynamics of Antarctic fur seals in the South Atlantic
Abstract: Variability in the reproductive performance of marine predators may be a result of ... to link variability in predator performance with specific measurements of oceanographic variability ... . This study examined variation in the foraging behavior of lactating Antarctic fur seals (Arctocephalus ... gazella) over 15 years at the island of South Georgia in relation to major indices of southern hemisphere ...
Meeting Document : WS-AREA 48-98/16 : Autor(es): I.L. Boyd (UK)
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Variation in reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implications for southern ocean monitoring studies
Orkney Islands) are summarised and reviewed. Breeding success of the Wandering Albatross, which breeds in ... significantly. The other species at South Georgia, which breed in summer and for which krill forms a significant ... proportion of their diet, have shown major fluctuations in some or all of: breeding population size, breeding ... success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ...
Meeting Document : SC-CAMLR-VI/BG/15 : Autor(es): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands, 1998/99
entangled but had lost their collars by the time of observation. All of the animals involved were juvenile ... parallel study undertaken at Bird Island, South Georgia in 1998/99. These indicated that the number of ... of fur seals was entangled in packaging bands at Signy Island (67%) than at Bird Island (38 ... %). Entanglements in packaging bands at Signy Island were 47% higher than the previous season. There were no reports ...
Meeting Document : SC-CAMLR-XVIII/BG/06 : Autor(es): Delegation of the United Kingdom
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Report of the South Georgia groundfish survey (Subarea 48.3) in January 2006
the N and NE of South Georgia. Fish in spawning condition (Stage IV) were found at the eastern end of ... Abstract: The biennial South Georgia Groundfish Survey was undertaken in January 2006 on board ... + fish in 2003. The toothfish diet was dominated by Patagonotothen guntheri. Acoustic observations were ... made in association with both demersal and pelagic data and will help discriminate icefish from other ...
Meeting Document : WG-FSA-06/51 : Autor(es): M.A. Collins, C. Jones, J. Clark. S. Fielding, J. Slakowski, T. North, W. Reid and J. Watts (United Kingdom)
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of relative mortality and tag-detection rates
CCAMLR of a number of toothfish fisheries in Antarctica, but the evaluation of tagging performance has ... can derive meaningful indices of relative performance of groups of fishing effort (e.g. vessel, trip ... detection rate of recaptured fish. This method was applied to the tagging data in CCAMLR Subareas 88.1 and ... 88.2. Results show that the indices developed can provide evidence of significant differences in ...
Meeting Document : WG-FSA-12/47 Rev. 1 : Autor(es): S. Mormede and A. Dunn (New Zealand)
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Krill distribution related to water structure and dynamics on the South Georgia shelf in January 2000 (AtlantNIRO-BAS Core Programme 1999/2000)
apparent. In the western box krill density was nearly 0.2 glm3 and in the eastern box was 1.8- 4.7 glm3 ... distribution were carried out in two standard boxes on the shelf and slope northwest and northeast of South ... Georgia. Eight hydroacoustic transects with hydrographic stations and RMT8+1 trawls were carried out in ... • Juvenile krill of 30-36 mm length were observed in the shelf zone and larger specimens, including spawning ...
Meeting Document : WG-EMM-00/51 : Autor(es): V.A. Sushin (Russia), P.P. Chernyshkov (Russia), F.F. Litvinov (Russia), J.L. Watkins (United Kingdom) and A.S. Brierley (United Kingdom)
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Seasonal and interannual variation in foraging range and habitat of macaroni penguins Eudyptes chrysolophus at South Georgia
Abstract: In marine ecosystems, characterisation of the foraging areas and habitats of predators ... is a key factor in interpreting their ecological role. We studied the foraging areas of the macaroni ... 2001 using satellite tracking. We investigated differences in foraging ranges and characteristics ... (male average = 572 km; female average = 376 km) in a north-westerly direction towards the Maurice Ewing ...
Meeting Document : WG-EMM-02/21 Text : Autor(es): K.E. Barlow and J.P. Croxall (United Kingdom)
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Seasonal and interannual variation in foraging range and habitat of macaroni penguins at South Georgia
Abstract: In marine ecosystems, characterisation of the foraging areas and habitats of predators ... is a key factor in interpreting their ecological role. We studied the foraging areas of macaroni ... tracking. We investigated differences in foraging ranges and characteristics between different stages of ... ; female average = 376 km) in a north-westerly direction towards the Maurice Ewing bank; some individuals ...
Meeting Document : WG-EMM-01/19 : Autor(es): K.E. Barlow and J.P. Croxall (United Kingdom)