10909 to 10920 of 13722 results
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Read more of: Discussion and reply: Marie Byrd Land, West Antarctica: Evolution of Gondwana’s Pacific margin constrained by zircon U-Pb geochronology and feldspar common-Pb isotopic compositions
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Global-scale tidal variability during the PSMOS campaign of June-August 1999: interaction with planetary waves
Read more of: Global-scale tidal variability during the PSMOS campaign of June-August 1999: interaction with planetary wavesDuring the PSMOS Global-scale tidal variability experiment campaign of June 1-August 31, 1999, a network of radars made measurements of winds, waves and tides in the mesosphere/lower-thermosphere region over a […]
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Global-scale tidal structure in the mesosphere and lower thermosphere during the PSMOS campaign of June-August 1999 and comparisons with the global-scale wave model
Read more of: Global-scale tidal structure in the mesosphere and lower thermosphere during the PSMOS campaign of June-August 1999 and comparisons with the global-scale wave modelObservations of mean winds and semidiurnal and diurnal tides in the mesosphere/lower-thermosphere (MLT) region were made during the 3-month Planetary-Scale Mesopause Observing System Summer 1999 campaign. Data from 22 ground-based […]
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More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae)
Read more of: More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae)The previously unclear taxonomic status of the high-Antarctic bivalve Limatula ovalis Thiele, 1912 and the sub-Antarctic L. pygmaea (Philippi, 1845) was investigated using molecular techniques (18S rDNA, 16S rDNA, ITS-1). […]
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Palaeobiogeography and the Ordovician and Mesozoic-Cenozoic biotic radiations
Read more of: Palaeobiogeography and the Ordovician and Mesozoic-Cenozoic biotic radiationsCurves of taxonomic diversity through geological time consistently show major evolutionary radiations during the Ordovician Period and from the mid-Mesozoic to the present day. Both intervals were characterized by marked […]
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Survival in king penguins Aptenodytes patagonicus: temporal and sex-specific effects of environmental variability
Read more of: Survival in king penguins Aptenodytes patagonicus: temporal and sex-specific effects of environmental variabilityWe investigated annual adult survival rates of king penguins Aptenodytes patagonicus breeding at South Georgia during 6 years in relation to age/breeding experience, sex, and food availability. During the first […]
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New and rare moss species from subantarctic South Georgia
Read more of: New and rare moss species from subantarctic South GeorgiaForty-one species of moss are reported from the subantaretic island of South Georgia. Twenty-two of these are recorded for the first time from the island, namely Andreaea obovata Thed. (first […]
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Sediment reworking on high-latitude continental margins and its implications for palaeoceanographic studies: insights from the Norwegian-Greenland Sea
Read more of: Sediment reworking on high-latitude continental margins and its implications for palaeoceanographic studies: insights from the Norwegian-Greenland SeaGeological evidence indicates that sediment reworking is common around the continental margins and abyssal depths of the Norwegian-Greenland Sea, a high-latitude setting with glacier-influenced margins. Detailed analysis of 22 cores […]
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Temperature effects on the metabolism of larvae of the Antarctic starfish Odontaster validus, using a novel micro-respirometry method
Read more of: Temperature effects on the metabolism of larvae of the Antarctic starfish Odontaster validus, using a novel micro-respirometry methodOxygen consumption of individual larvae of the Antarctic sea-star Odontaster validus was measured during the 50-day period following fertilisation. Values ranged from 0.76 pmol O-2 h(-1) for one specimen at […]
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Evolution of subglacial bedforms along a paleo-ice stream, Antarctic Peninsula continental shelf
Read more of: Evolution of subglacial bedforms along a paleo-ice stream, Antarctic Peninsula continental shelfGeophysical data from the Antarctic Peninsula continental shelf reveal streamlined subglacial bedforms in a cross-shelf trough. Bedforms exhibit progressive elongation with distance along the trough, and record flow of a […]
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Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia
Read more of: Larval and juvenile distribution and growth of Patagonian toothfish around South GeorgiaEarly stages of toothfish are reported from cruises between 1978 and 2001. South Georgia was regularly sampled, Shag Rocks was briefly sampled in three summers, and Burdwood Bank was sampled […]
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Seasonal observations of stable isotope variations in a valley catchment, Signy Island, South Orkney Islands
Read more of: Seasonal observations of stable isotope variations in a valley catchment, Signy Island, South Orkney IslandsThe oxygen and hydrogen isotope composition of waters in a small valley at Signy Island, South Orkney Islands, were monitored over three summers (1999 to 2001). These stable isotopes track […]