6721 to 6732 of 13906 results
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Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island
Read more of: Palynology of the Marambio Group (Upper Cretaceous) of northern Humps IslandPalynological analyses of the Marambio Group sediments of Humps Island (Santa Marta and López de Bertodano formations) indicates that there is minor displacement across a prominent NW–SE trending normal fault […]
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Temperature variation and its biological significance in fellfield habitats on a maritime Antarctic island
Read more of: Temperature variation and its biological significance in fellfield habitats on a maritime Antarctic islandTemperatures within soil and plant habitats on Signy Island in the maritime Antarctic were measured during 1987. Four sites were monitored using minithermistors attached to a data logging system. Three […]
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Factors causing the limitation of growth of terrestrial algae in maritime Antarctica during late summer
Read more of: Factors causing the limitation of growth of terrestrial algae in maritime Antarctica during late summerThe factors causing the cessation of growth and decline of microalgal communities on Antarctic fell-field soils during late summer were investigated. Physical and chemical amendments were applied within small enclosures […]
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Fine structure of a terrestrial cyanobacterial mat from Antarctica
Read more of: Fine structure of a terrestrial cyanobacterial mat from AntarcticaThe fine structure of a cyanobacterial mat collected from the fellfield ecosystems of Signy Island, Antarctica, was examined using some novel light and scanning electron microscope techniques. The mat was […]
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The reproductive strategies of two Antarctic rotifers
Read more of: The reproductive strategies of two Antarctic rotifersThe bdelloid rotifers Philodina gregaria Murray and Adineta grandis Murray were both cultured through three generations. The results suggested the following models for calculation purposes: (1) that individual Adineta grandis […]
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The effect of maternal age and experience on egg-size and hatching success in Wandering Albatrosses Diomedea exulans
Read more of: The effect of maternal age and experience on egg-size and hatching success in Wandering Albatrosses Diomedea exulansThe roles of maternal age and experience, on the one hand, and individual, year and random effects on the other, in influencing avian egg-size and hatching success have been much […]
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Foraging economics and performance of polar and subpolar Atlantic seabirds
Read more of: Foraging economics and performance of polar and subpolar Atlantic seabirdsSeabirds of high latitudes in the North and South Atlantic (chiefly penguins, Procellariformes, alcids, shags, Gannet and Kittiwake) are compared (on absolute and energy-, mass- and time-specific scaled bases) in […]
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Southern Ocean environmental changes: effects on seabird, seal and whale populations
Read more of: Southern Ocean environmental changes: effects on seabird, seal and whale populationsThe main changes in the distribution and abundance of marine top predators in the Antarctic in the last two centuries were caused by hum an over-exploitation. Hypotheses that increases in […]
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The extent of hydrocarbon contamination in the marine environment from a research station in the Antarctic
Read more of: The extent of hydrocarbon contamination in the marine environment from a research station in the AntarcticLow level hydrocarbon contamination is measurable in the vicinity of Antarctic stations, N-alkane and polycyclic aromatic hydrocarbon (PAH) concentrations in seawater and sediment at Signy Station, South Orkney Islands indicated […]