Resultados de la búsqueda
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Sea surface temerature anomalies near South Georgia: relationships with the South Atlantic and the Pacific El Niño regions
Abstract: The sea surface temperature dataset of Reynolds and Smith (1994) was used to describe ... variability around South Georgia. High levels of autocorrelation were evident in the sea surface temperature ... anomalies, with periodicity evident at a lag period of 4 years. To the north of the island significant ... approximately encompassed the Georgia Basin. Crosscorrelation analyses with indices describing the El Niñio ...
Meeting Document : WS-AREA 48-98/10 : Autor(es): P. Trathan and E.J. Murphy (UK)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–11
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region (Subareas 88.1 and SSRUs ... 88.2A–B), using revised catch, catch-at-age, and tag-recapture data for the 2010–2011 seasons. The 2011 ... reference model using the selected trips tag data gave a similar, but slightly higher estimate of initial ...
Meeting Document : WG-FSA-11/42 : Autor(es): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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A PRELIMINARY BALANCED TROPHIC MODEL OF THE ECOSYSTEM OF THE ROSS SEA, ANTARCTICA, WITH EMPHASIS ON APEX PREDATORS
Abstract: We report on the development of a mass balanced carbon-budget trophic model of the Ross ... Sea as a step towards investigating ecosystem effects of the fishery for Antarctic toothfish ... (Dissostichus mawsoni). The model has 30 trophic groups representing all the major biota of the Ross Sea. Many ... of the lower trophic level species in the model are grouped by functional role because information is ...
Meeting Document : WG-EMM-08/42 : Autor(es): M.H. Pinkerton, J.M. Bradford-Grieve and S.M. Hanchet (New Zealand)
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BIOMASS ESTIMATES AND SIZE DISTRIBUTIONS OF DEMERSAL FINFISH ON THE ROSS SEA SHELF AND SLOPE FROM THE NEW ZEALAND IPY-CAML SURVEY, FEBRUARY-MARCH 2008
Abstract: during February and March 2008 as part of the International Polar Year. The main aim of ... the survey was to carry out a Census of Antarctic Marine Life in this regionfocussing on sampling the ... pelagic and benthic habitats on the shelf, slope, abyss, and seamounts in the Ross Sea region (CCAMLR ... Subarea 88.1). The shelf and slope were stratified by depth and at least three random trawls completed in ...
Meeting Document : WG-FSA-08/31 : Autor(es): S.M. Hanchet, M.L. Stevenson (New Zealand), C. Jones (USA), P.M. Marriott, P.J. McMillan, R.L. O’Driscoll, D. Stevens, A.L. Stewart and B.A. Wood (New Zealand)
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The foraging range of Adelie penguins at Bechervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery
Abstract: The foraging ranges of six female and four male Adélie penguins breeding at Bechervaise ... Island near Mawson Station (Mac. Robertson Land) were determined by satellite tracking, using the ARGOS ... system. Birds were tracked over four foraging trips (by 2 females and 4 males) during the incubation ... birds were feeding chicks. Most birds made foraging trips to the continental shelf break (1000m isobath ...
Meeting Document : WG-CEMP-92/36 : Autor(es): K.R. Kerry, J.R. Clarke and G.D. Else (Australia)
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On the problem of icefish (Champsocephalus gunnari) vertical migration on the South Georgia shelf
Abstract: The results are presented of studying icefish vertical migration based on the data of R ... /V cruises during the seasons of 1982-83, 1983-84 and 1986-87, when this species was highly abundant ... on the South Georgia shelf. It is revealed that at day time the fish distributes near the bottom and ... the maximum catches were available at the middle of the light hours of the day. At twilight the fish ...
Meeting Document : WG-FSA-91/06 : Autor(es): J.A. Frolkina and V.I. Shlibanov (USSR)
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A descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in the Ross Sea up to 2005/06
Abstract: A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... and 88.2 since 2001 is presented. The paper updates tag-release and tag-recapture data for fish that ... for non- New Zealand vessels for the first time. However, tag data were only available for all of ... . Tagging rates by area over the past three years have been in the same proportion as the catch by area ...
Meeting Document : WG-FSA-SAM-06/09 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)
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Further investigations in the assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13
Abstract: This paper presents further investigations of the Bayesian sex and age structured ... 88.2C, D, E, F, G, and H (SSRUs 88.2C–H). Annual age-length keys were applied, and the time trends in ... the tag-derived biomass index were investigated. The impact of hypothesised stock structure, fish ... movement, tag mixing and the potential for localised depletion on the stock assessment were also ...
Meeting Document : WG-SAM-14/29 : Autor(es): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Results of the Spanish exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in the two previous seasons
Abstract: We addressed the revisions requested by the WG-SAM-14 regarding the results of the ... -SAM-14/09. A summary of the results of the Spanish research that took place in the 58.4.1 division ... during the last two fishing seasons is presented. A prospective estimation of the local biomass (B LOC ... ) of three SSRUs visited using the local depletion method, together with the extrapolation to the total ...
Meeting Document : WG-FSA-14/35 : Autor(es): R. Sarralde, L.J. López-Abellán and S. Barreiro (Spain)
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Preliminary report on SO-AntEco (South Orkneys – State of the Antarctic Ecosystem) benthic survey (JR15005) around the South Orkney Plateau (February–March 2016)
Abstract: The RRS James Clark Ross carried out a benthic scientific research voyage around the ... South Orkney Plateau in February-March 2016. The Expedition, led by the British Antarctic Survey, was in ... collaboration with the Scientific Committee for Antarctic Research (SCAR) State of the Antarctic Ecosystem ... (AntEco) research programme, including scientists from 8 CCAMLR members. The main purpose of the voyage ...
Meeting Document : WG-EMM-16/13 Rev. 1 : Autor(es): H. Griffiths, S. Grant, K. Linse, P. Trathan and the SO-AntEco scientific team