Résultats de la recherche
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Changes in the diet of the South Georgia shag Phalacrocorax georgianus at the South Orkney Islands along four consecutive years
also for the South Orkney Islands in previous studies. These differences could be due to the use of ... fish populations, the comparison of our results with historical data may be indicating a recovery of G ...
Meeting Document : WG-EMM-00/8 : Auteur(s): R. Casaux and A. Ramón (Argentina)
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Improvements to the multiple-frequency method for in situ target strength measurements
transducer. Tolerances for matching target positions at two or more frequencies were determined to be ±0.5 m ... % of multiple targets while allowing 90% of the resolvable single-targets to be measured Author(s ...
Meeting Document : WG-EMM-99/38 : Auteur(s): D.A. Demer (USA) and M.A. Soule (South Africa)
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Notes on the availability of three important finfish species in offshore waters of the lower South Shetland Islands (Subarea 48.1)
can be increased. However, the value of these data as a combined singular data set for one year of ... more information, and allow a more direct comparison of the two data sets to be realised, particularly ...
Meeting Document : WG-FSA-99/31 : Auteur(s): C.D. Jones (USA), E.R. Barrera-Oro, E.R. Marschoff and R.J. Casaux (Argentina)
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Foraging partitioning between giant petrels Macronectes spp. and its relationship with breeding population changes at Bird Island, South Georgia
may be reduced by the limited overlap in the activity range, with southern giant petrels foraging ... during the breeding season on fur seals, which have increased exponentially in recent years, may be ...
Meeting Document : WG-FSA-99/39 : Auteur(s): J. González-Solís, J.P. Croxall and A.G. Wood (United Kingdom)
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POPULATION ASSESSMENTS OF GENTOO PENGUINS (PYGOSCELIS PAPUA) BREEDING AT AN IMPORTANT ANTARCTIC TOURIST SITE, GOUDIER ISLAND, PORT LOCKROY, PALMER ARCHIPELAGO, ANTARCTICA
results suggest that in the future, it would be useful to control for this additional disturbance. Our ... penguin breeding numbers is complex and that some factors may never be completely identified. Author(s ...
Meeting Document : WG-EMM-09/P07 : Auteur(s): P.N. Trathan, J. Forcada, R. Atkinson, R.H. Downie and J.R. Shears
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An acoustic survey of Antarctic krill on the South Georgia shelf, CCAMLR Subarea 48.3, in January 1992
estimates. The results were partitioned by depth to remove deep echoes that were thought to be mostly due to ... other scatterers. A threshold at one frequency was used to remove noise and any echoes too weak to be ...
Meeting Document : WG-EMM-96/42 : Auteur(s): Everson, I., Goss, C.
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THE SELECTION OF TRIPS BASED ON DATA METRICS FOR THE ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
trips were used to define a range for various data quality metrics considered to be informative with ... recoveries and where tags released on the trip must be captured at an above median rate, the resulting ...
Meeting Document : WG-FSA-09/35 : Auteur(s): D.A.J. Middleton (New Zealand)
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DOWN-SCALING FOOSA TO MODEL THE ADMIRALTY BAY PYGOSCELID PENGUIN COLONIES: A WORK IN PROGRESS
helps to explain trends in adult abundance. From a bottom-up perspective, there appears to be a trade ... -recruitment dynamics suggest that understanding predatory effects on juveniles may be fundamental for ...
Meeting Document : WG-EMM-08/51 : Auteur(s): J.T. Hinke, G.M. Watters and W.Z. Trivelpiece (USA)
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COMPARISON OF THE BIOMASS OF ANTARCTIC KRILL, (EUPHAUSIA SUPERBA), AROUND THE SOUTH SHETLAND AND SOUTH ORKNEY ISLANDS IN THREE YEARS: 1999, 2000 AND 2008
may be useful in deriving biomass estimates for the South Orkney Islands in 1999. We use a simple ... results are promising and suggest that where possible future data, derived from ancillary studies, can be ...
Meeting Document : WG-EMM-08/26 : Auteur(s): C. Reiss and A. Cossio (USA)
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FISHING ACTIVITY AND SEABIRD-VESSEL ATTENDANCE NEAR THE NORTHERN ANTARCTIC PENINSULA
objective was to assess whether seabirds exhibited differing levels of attendance that may be attributed to ... direction) and discards of fish and offal to determine whether they could be used to explain variability in ...
Meeting Document : WG-FSA-08/11 : Auteur(s): Jarrod A. Santora and Kimberly S. Dietrich (USA) and Darci Lombard (Canada)