Résultats de la recherche
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Satellite tracking of black-browed and light-mantled sooty albatrosses from Heard Island and potential interactions with fisheries
over submarine canyons on Gunneri Ridge, north east of the island. There was considerable spatial ... a further 5% went beyond either EEZ into the high seas north and east of Heard Island. In contrast ... Abstract: The purpose of this document is to inform CCAMLR of the results of a satellite tracking ... ). This was the first time the movements of either species from the island had been studied. Ten black ...
Meeting Document : WG-FSA-05/14 : Auteur(s): K. Lawton, R. Kirkwood and G. Robertson (Australia)
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Foraging response of Antarctic fur seals to changes in the marine environment
Abstract: This study examined the relative contribution of environmental variation and the ... seasonal demands of pup rearing on the foraging behaviour of female Antarctic fur seals Arctocephalus ... recorders measured the diving behaviour of 72 individuals during a total of 385 foraging trips totalling ... 1964 d at sea. The frequencies of krill, fish and squid in the diet were estimated from prey items ...
Meeting Document : WG-EMM-99/35 : Auteur(s): D.J. McCafferty, I.L. Boyd, T.R. Walker and R.I. Taylor (United Kingdom)
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An assessment of temporal variability and interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island
Abstract: We examined temporal variability in a series of CEMP parameters collected over the ... the correlation of each parameter with breeding success. Breeding success was measured in terms of 1 ... ) the absolute number of chicks on the island which fully crèche and 2) the number of chicks crèched per ... nest with eggs. We found a low degree of correlation between incubating and brooding nest counts which ...
Meeting Document : WG-EMM-02/46 : Auteur(s): L.M. Emmerson, J. Clarke, K. Kerry and C. Southwell (Australia)
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Comparisons in prey distribution between inshore and offshore foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island
foraging trip such as Antarctic fur seals (Arctocephalus gazella) and overnight foraging chinstrap penguins ... ; their ventral light organs may become easier target for predators at night. Thus, aggregation pattern of ... krill, body size/maturity stage of krill and availability of myctophid fish may make the slope/offshore ... region favorable foraging areas in spite of its lower krill density. Author(s): Ichii, T., Bengtson, J.L ...
Meeting Document : WG-EMM-96/49 : Auteur(s): Ichii, T., Bengtson, J.L., Boveng, P., Cameron, M.F., Naganobu, M., Meyer, W.R., Hiruki, L.M., Takao, T., Jansen, J.K., Kawaguchi, S.
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Environmental variability and the behavioural dynamics of Antarctic fur seals in the South Atlantic
climate variation. Fur seal foraging trip duration was transformed into a normally distributed index of ... Abstract: Variability in the reproductive performance of marine predators may be a result of ... physical forcing by large-scale oceanographic variability. Time lags, remoteness from the epicentre of a ... physical process and the simultaneous action of multiple physical processes often mean that it is difficult ...
Meeting Document : WS-AREA 48-98/16 : Auteur(s): 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
success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ... Abstract: Aspects of the reproductive performance of Black-browed, Grey-headed and Wandering ... Orkney Islands) are summarised and reviewed. Breeding success of the Wandering Albatross, which breeds in ... proportion of their diet, have shown major fluctuations in some or all of: breeding population size, breeding ...
Meeting Document : SC-CAMLR-VI/BG/15 : Auteur(s): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Variation or reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implication for Southern Ocean monitoring studies
success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ... Abstract: Aspects of the reproductive performance of Black-browed, Grey-headed and Wandering ... Orkney Islands) are summarised and reviewed. Breeding success of the Wandering Albatross, which breeds in ... proportion of their diet, have shown major fluctuations in some or all of: breeding population size, breeding ...
Meeting Document : WG-CEMP-87/13 : Auteur(s): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Review of activities in monitoring marine debris in the CAMLR Convention Area
-fishing items such as packaging and wood remain the most common type of debris items found in beach ... Conservation Measure 26-01 requiring packaging bands to be cut up into 30 cm pieces. The amount of debris in ... colonies of grey-headed albatrosses and black-browed albatrosses at Bird Island has increased recently, and ... the major category of items found was plastics. The amount of fishing related items (fishing lines ...
Meeting Document : WG-IMAF-11/04 Rev. 1 : Auteur(s): Secretariat
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Quantitative stock survey and some biological and morphometric characteristics of the deep-sea red crab Geryon quinquedens off south west Africa
processing the live material to a cooked frozen product, red crab is subject to a mass loss of about 54 per ... Abstract: In order to assess the abundance of the red crab Geryon quinquedens, two otter-trawl ... bimodal frequency distribution of female crabs was evident with modal sizes at 7.7 cm and 8.7 cm carapace ... cent. Analysis of stomach contents by volume showed that only 12 per cent of male stomachs contained 5 ...
Meeting Document : WS-CRAB-93/22 : Auteur(s): C.J. De B. Beyers and C.G. Wilke (South Africa)
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Sexual dimorphism and sexual segregation in foraging strategies of northern giant petrels Macronectes halli during incubation
Abstract: Giant petrels (Macronectes spp) are the most sexually dimorphic of all seabirds. We ... used satellite-tracking and mass change during incubation to investigate the influence of sexual size ... dimorphism, in terms of the intersexual food competition hypothesis, on foraging and fasting strategies of ... , duration of foraging trips) was greater for females than for males. In contrast, foraging efficiency ...
Meeting Document : WG-FSA-99/38 : Auteur(s): J. González-Solís, J.P. Croxall and A.G. Wood (United Kingdom)