Showing 11862 items
1 January, 1968
Comparisons are made between the Lesser Antilles and the South Sandwich Islands, the recent volcanic island chains at the eastern margins of the Caribbean and Scotia arcs. Although situated in…Read more on Comparative volcanology and petrology of the atlantic island-arcs
1 January, 1968
1. The metabolic rates of four Antarctic fish have been measured, including the haemoglobin-less Chaenocephalus aceratus. 2. The respiratory rates of the fish are discussed in relation to body weights.…Read more on The respiratory metabolism of some Antarctic fish
1 January, 1968
Almost all accounts of the natural history of the grey seal Halichoerus grypus give the impression that a cow invariably seeks and feeds only her own pup among the dozens…1 January, 1968
Field measurements are presented of dielectric absorption in Antarctic snow and ice at frequencies of a few hundred megahertz. They are compared with measurements by other authors at very high…1 January, 1967
An examination of material from Signy Island, in the South Orkney group, shows that large amounts of plant nutrients are moving through the ecosystem of the island. Physical weathering is…Read more on Factors affecting the availability of plant nutrients on an Antarctic island
1 January, 1967
Although all the soils on Signy Island are at an early stage of development a number of contrasting types are present. In this report the influence of the various internal…1 January, 1967
1. Body-weight, skinfold thickness and food intake were measured at regular intervals in twenty-five young men while on an Antarctic expedition. 2. The mean calorie intake over the year was…1 January, 1967
During the past 100 years many papers have been published on Antarctic microbiology in general and that of the soil, snow and ice in particular. However, there are still contradictory…1 January, 1967
Prior to 1962 work on freshwater within the British Sector of the Antarctic had been confined to the collection of specimens and their subsequent taxonomic evaluation. Collections were made by…Read more on Antarctic ecosystems. The freshwater lakes of Signy Island and their fauna
1 January, 1967
The aim of the present paper is to summarize the broad scope of this Discussion and to attempt to draw certain final generalizations about the Antarctic as a biological zone.…1 January, 1967
Signy Island (lat. 60° 43' S, long. 45° 38' W) is one of the southernmost and smaller members of the South Orkney Islands, which lie in the South Atlantic Ocean…1 January, 1967
The presence of flowering plants within the Antarctic botanical zone (as defined by Greene 1964 a) has been known for nearly 150 years. The first to be discovered was a…Read more on The growth and reproduction of Antarctic flowering plants
1 January, 1967
The pioneer studies of Skottsberg (1912), supported by the observations of Bertram (1938) and Bryant (1945), showed that a range of bryophyte and lichen communities are developed in many localities…1 January, 1967
The extremely impoverished nature of the vascular flora in Antarctic regions has long been recognized and contrasted with the richness of comparable latitudes in the northern hemisphere. Rudmose Brown (1906),…Read more on Temperature relationships of Antarctic vegetation
1 January, 1967
This paper presents some preliminary results of an investigation into the seasonal variation of extractable n utrients in the soils of Signy Island. In an examination of British soils Allen…Read more on Seasonal availability of chemical nutrients on Signy Island
1 January, 1967
The anostracan crustacean, Branchinecta gaini, has been recorded from freshwater lakes and pools in many places in the Antarctic and from the southern tip of South America. On Signy Island,…Read more on The osmotic and ionic regulation of Branchinecta gaini Daday
1 January, 1967
During the period from 18 January to 31 M arch 1964 the author was able to visit certain islands on the Scotia Ridge and parts of the Antarctic Peninsula. Apart…Read more on The terrestrial invertebrate fauna of the Maritime Antarctic
1 January, 1966
Rectal temperatures were measured in a group of 15 huskies during the Antarctic winter at Halley Bay, and found to vary between37–55 and 40 25oC. A significant positive correlation was…Read more on Rectal temperature of the husky under severe winter conditions in the Antarctic
1 January, 1966
Since the first conception of a hovercraft by C. S. Cockerell in the early 1950s, and the completion of the first experimental full-scale machine (SR. N1) in 1959, the development…