Comparison of Holocene electrical records from Dome C and Vostok, Antarctica
As part of the European Project for Ice Coring in Antarctica, a new deep ice core is being drilled at Dome C. Two electrical methods have been used on the […]
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Read more of: Comparison of Holocene electrical records from Dome C and Vostok, Antarctica
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Mafic dike swarms in the South Shetland Islands volcanic arc: Unravelling multiepisodic magmatism related to subduction and continental rifting
Read more of: Mafic dike swarms in the South Shetland Islands volcanic arc: Unravelling multiepisodic magmatism related to subduction and continental riftingEight groups of mafic dikes and related high-level stocks cut Triassic accretionary complex and Mesozoic magmatic arc formations on Livingston Island. Some are affected by silicic/sericitic alteration, related to Cretaceous […]
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A comparison of chlorophyll/nutrient dynamics at two survey sites near South Georgia, and the potential role of planktonic nitrogen recycled by land-based predators
Read more of: A comparison of chlorophyll/nutrient dynamics at two survey sites near South Georgia, and the potential role of planktonic nitrogen recycled by land-based predatorsThere is an apparent mismatch between the high carbon demand of seals and seabirds breeding on the subantarctic island of South Georgia and the overall low primary production measured in […]
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Foraging white-chinned petrels Procellaria aequinoctialis at risk: from the tropics to Antarctica
Read more of: Foraging white-chinned petrels Procellaria aequinoctialis at risk: from the tropics to AntarcticaIn the Southern Ocean white-chinned petrels Procellaria aequinoctialis form the majority of the bird bycatch in longline fisheries. Satellite tracking of breeding birds from the Crozet islands and from South […]
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Exploitation of the marine environment by two sympatric albatrosses in the Pacific Southern Ocean
Read more of: Exploitation of the marine environment by two sympatric albatrosses in the Pacific Southern OceanThe marine habitat exploited by black-browed Diomedea melanophrys and grey-headed albatrosses D. chrysostoma breeding at Campbell Island, New Zealand, was studied using satellite telemetry. Data were analysed in relation to […]
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Geographical variation in morphometry of black-browed and grey-headed albatrosses from four sites
Read more of: Geographical variation in morphometry of black-browed and grey-headed albatrosses from four sitesDifferences in morphometry between five populations of black-browed albatrosses (Diomedea melanophrys) and four populations of grey-headed albatrosses (D. chrysostoma) are examined. Two clear groups of black-browed albatrosses are evident, with […]
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Sustaining observations in the polar oceans
Read more of: Sustaining observations in the polar oceansPolar oceans present a unique set of challenges to sustained observations. Sea ice cover restricts navigation for ships and autonomous measurement platforms alike, and icebergs present a hazard to instruments […]
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Robustness of collective behaviour in strongly driven avalanche models: Magnetospheric implications
Read more of: Robustness of collective behaviour in strongly driven avalanche models: Magnetospheric implicationsThe hypothesis of self-organised criticality (SOC) predicts that certain open dissipative systems evolve to a critical state where all energy release statistics display power law distributions for event occurrence, size […]
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Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
Read more of: Variation in the distribution of Antarctic krill Euphausia superba around South GeorgiaThere is considerable spatial structure within the South Georgia krill-based ecosystem in terms of predator demand, commercial fishery pressure and krill abundance. Here we investigate the hypothesis that there is […]
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A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia
Read more of: A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South GeorgiaA composite recruitment index based on density data derived from acoustic surveys and on length-frequency data obtained from either target or station net hauls is described. This composite index is […]
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The spring mesozooplankton community at South Georgia: a comparison of shelf and oceanic sites
Read more of: The spring mesozooplankton community at South Georgia: a comparison of shelf and oceanic sitesMesozooplankton (predominantly 200–2000 μm) were sampled at a shelf and an oceanic station close to South Georgia, South Atlantic, during austral spring (October/November) 1997. Onshelf zooplankton biomass was extremely high at […]