Résultats de la recherche
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IDENTIFICATION OF DATA QUALITY METRICS FOR TAGGING DATA SELECTION
rates of recapture of tags released by the trip, and above-median tag recapture rates by the trip.A ... quality metrics may be most powerful in distinguishing the trips considered to have good tagging data ... . These include metrics for taxonomic resolution in the observer data, goodness of fit of catch data to ... Benford's Law, and the variation in toothfish catch rates.This reduced set of data quality metrics ...
Meeting Document : WG-SAM-09/19 : Auteur(s): D.A.J. Middleton and A. Dunn (New Zealand)
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Beach debris survey – Main Bay, Bird Island, South Georgia, 2004/05
43% on the 361 items recorded in 2003/04 that corresponded to the highest levels of summer beach ... than the previous recording period with only 23% of the total number of debris items being collected in ... stable with 4.1135kg collected this year, whilst 5.3957 kg was gathered in 2003/04. For the second ... pieces in 1995/96. Over the same 15-year period packing bands are still regularly recovered from the ...
Meeting Document : SC-CAMLR-XXV/BG/12 : Auteur(s): Delegation of the United Kingdom
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Age and growth of Antarctic Euphausiacea (Crustacea) under natural conditions
years for the krill Euphausia superba. Growth in length and weight was calculated by non-linear ... regressions. No difference in growth of krill were observed between the Antarctic Peninsula area and the ... eastern Weddell Sea. Former opinions that differ are discussed. Seasonal growth was re-analyzed for the ... and generation time of each species is given. In general, Antarctic euphausiids seem to remature and ...
Meeting Document : SC-CAMLR-VI/BG/24 : Auteur(s): V. Siegel (FRG)
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Outline for year 3 of the 3-year longline survey to determine toothfish population connectivity between Subareas 48.2 and 48.4
third year of an agreed 3-year longline survey, in the wider context of connecting the recently ... undertaken surveys in Subarea 48.2 with the established fishery in Subarea 48.4. The overall research ... Dissostichus sp population structures in this region, and improving available data on bathymetry and associated ... analysis plan leading towards the development of a stock hypothesis for the eastern regions of 48.2 and ...
Meeting Document : WG-SAM-18/15 : Auteur(s): M. Söffker and M. Belchier
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Modelling functional relationships between predators and prey
Bird Island, South Georgia. In addition, year-specific data for a) black-browed albatross breeding ... tag loss), pregnancy rate, pup production, pup growth rates and mortality rates and foraging trip ...
Meeting Document : WG-Joint-94/05 : Auteur(s): J.P. Croxall, I.L. Boyd and P.A. Prince (United Kingdom)
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Adélie penguins foraging behaviour and krill abundance along the Wilkes and Adélie Land coasts, Antarctica
the 1995/96 breeding season. The study took place in conjunction with a ship-based krill survey in the ... ). Foraging trip durations and total distances travelled were also significantly different between colonies ... over the continental shelf and not in oceanic waters. The percentage distribution of dive depths were ...
Meeting Document : WG-EMM-97/64 : Auteur(s): Kerry, K., Rodary, D., Bost, C., Lemaho, Y., Wienecke, B.C., Thomson, R., Lawless, R., Pauly, T., Robertson, G.
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Surface exchange between the Weddell and Scotia Seas
transport pathways between the eastern Antarctic Peninsula and sites of elevated chlorophyll in the Scotia ... surface drifters released in January 2012 in the northwestern Weddell Sea. The drifters detail Lagrangian ... Sea. ACC frontal currents, in particular the Southern ACC Front, act as dynamical transport barriers ... Weddell source waters in the Scotia Sea. Interannual fluctuations in surface chlorophyll in the south ...
Meeting Document : WG-EMM-14/P03 : Auteur(s): A.F. Thompson and M.K. Youngs
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Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies
reviewed. Breeding success of the wandering albatross, which breeds in winter and eats fish and squid, has ... South Georgia, which breed in summer and feed extensively on krill, have shown major fluctuations in ... some or all of breeding population size, breeding success, foraging trip duration and offspring growth ... fluctuations in reproductive performance of the krill-eating, summer-breeding penguins at Signy Island are not ... breeds in winter and eats fish and squid, has remained constant, while population size has declined ... gradually but significantly. The other species at South Georgia, which breed in summer and feed ... extensively on krill, 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 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Auteur(s): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery
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Outline for year 2 of the 3-year longline survey to determine toothfish population connectivity between Subareas 48.2 and 48.4
second year of an agreed 3-year longline survey, in the wider context of connecting the recently ... undertaken surveys in Subarea 48.2 with the established fishery in Subarea 48.4. The overall research ... Dissostichus sp population structures in this region, and improving available data on bathymetry and associated ... and two-year data analysis plan leading towards the development of a stock hypothesis for the eastern ...
Meeting Document : WG-FSA-17/45 : Auteur(s): M. Söffker and M. Belchier
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Outline for year 3 of the 3-year longline survey to determine toothfish population connectivity between Subareas 48.2 and 48.4
third and final year of an agreed 3-year longline survey, in the wider context of connecting the ... recently undertaken surveys in Subarea 48.2 with the established fishery in Subarea 48.4. The overall ... understanding of Dissostichus spp population structures in this region, and improving available data on ... eastern regions of 48.2 and southern regions of 48.4. Author(s): G. Robson, P. Hollyman and C. Darby ...
Meeting Document : WG-FSA-18/31 : Auteur(s): G. Robson, P. Hollyman and C. Darby