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Respiration Studies on the Antarctic Collembolan Cryptopygus antarcticus
1 January, 1975 by William Block
Analyses are presented of 190 measurements of individual respiration rate for the complete size range of Cryptopygus antarcticus Willem. A Cartesian Diver micro-respirometer was used at Signy Island (Maritime Antarctic)…Read more on Respiration Studies on the Antarctic Collembolan Cryptopygus antarcticus
Diurnal and seasonal variation in oral glucose tolerance: Studies in the Antarctic
1 January, 1975
Oral glucose tolerance tests were performed in 12 young men in the Antarctic. Tests were done in the morning and afternoon at three monthly intervals (March, June, September, December). The…Read more on Diurnal and seasonal variation in oral glucose tolerance: Studies in the Antarctic
The plasma insulin and growth hormone response to oral glucose: Diurnal and seasonal observations in the antarctic
1 January, 1975
Plasma insulin and growth hormone levels were measured during morning and afternoon oral glucose tolerance tests performed on 12 young men at three monthly intervals in the Antarctic. No diurnal…First direct evidence of life under Antarctic shelf ice
1 January, 1975
A topic of current interest to Antarctic marine biologists is the possibility of a biome at considerable distances from the open sea under the vast, permanent ice shelves that fringe…Read more on First direct evidence of life under Antarctic shelf ice
Is the vegetation of continental Antarctica predominantly aquatic?
1 January, 1975
We have suggested1 that Antarctic lakes offer a more favourable physical environment to certain species of moss than the surrounding land. We now present evidence in support of the wider…Read more on Is the vegetation of continental Antarctica predominantly aquatic?
Organochlorine residues in Antarctic snow
1 January, 1975
DDT is a useful model compound for studying the circulation of a toxic pollutant in the global environment1,2. An understanding of this process could in future be related to potentially…The study of global atmospheric pollution in Antarctica
1 January, 1975
Waste products from man's activities, released into the environment, distribute themselves between the atmosphere, the land, the sea and, through these, to the biota. There is a constant interchange of…Read more on The study of global atmospheric pollution in Antarctica
Evidence for pre-Jurassic subduction in western Antarctica
1 January, 1975
The South Shetland Islands (from King George Island to Livingston Island) are situated on a small crustal plate bounded by incipient back-arc spreading along the axis of Bransfield Strait to…Read more on Evidence for pre-Jurassic subduction in western Antarctica
Methods of determining whistler nose-frequency and minimum group delay
1 January, 1975
The optimization of the method whereby the key whistler parameters, nose-frequency (fn) and minimum group delay (tn) are determined is important for the efficient reduction of whistler recordings to yield…Read more on Methods of determining whistler nose-frequency and minimum group delay
A growth analysis technique for assessing habitat severity in tundra regions
1 January, 1975
The results are reported of growth experiments carried out over three seasons on the sub-Antarctic island of South Georgia. The values obtained for relative growth rate, net assimilation rate and…Read more on A growth analysis technique for assessing habitat severity in tundra regions
Liquid brine in ice shelves
1 January, 1975
Holes drilled into thin areas of the Brunt Ice Shelf encounter a layer of liquid brine less than 1 m thick approximately at sea-level. Assuming the brine to be moving…First marine Triassic fauna from the Antarctic Peninsula
1 January, 1975
The fauna reported here was obtained from the Legoupil Formation in the north-western part of the Antarctic Peninsula (Fig. 1), which has been assigned a Cretaceous age on the basis…Read more on First marine Triassic fauna from the Antarctic Peninsula
The pattern of growth and translocation of photosynthate in a tundra moss, Polytrichum alpinum
1 January, 1974
Green aboveground shoots of the moss Polytrichum alpinum Hedw., growing on the tundra at Point Barrow, Alaska, were exposed to 14CO2 in the field. Autoradiography and subsequent counting revealed preferential…Thyroid hormone responses to prolonged cold exposure in man
1 January, 1974
1. Four men, of ages varying from 23 to 28 years, living at Halley Bay, Antarctica (75° 31′ S, 26° 39′ W), were exposed to a mean air temperature of…Read more on Thyroid hormone responses to prolonged cold exposure in man
The persistence of mycoplasmas in the urogenital tract of men in the Antarctic
1 January, 1974
A series of meatal swabs, taken from 17 men over a period of 17 months during their tour at an Antarctic base was examined for mycoplasmas. The number of organisms…Read more on The persistence of mycoplasmas in the urogenital tract of men in the Antarctic
The helminth parasites of the sheathbill, Chionis alba (Gmelin), and the diving petrels, Pelecanoides georgicus (Murphy and Harper) and P. urinatrix (Gmelin), at Bird Island, South Georgia
1 January, 1974
Twelve sheathbills, Chionis alba, 12 South Georgian diving petrels, Pelecanoides georgicus, and 5 common diving petrels, P. urinatrix, collected at Bird Island, South Georgia, were examined for helminth parasites. These…A simple model of the vertical distribution of electron concentration in the ionosphere
1 January, 1973
An idealized model of the vertical distribution of the electron concentration in the E- and F-regions of the ionosphere is developed in which the model parameters are given by simple…Read more on A simple model of the vertical distribution of electron concentration in the ionosphere
Deep-water mosses in Antarctic lakes
1 January, 1973
Mosses are generally considered to be land plants although a few species are found growing submerged in streams and shallow areas of lakes. But there is now increasing evidence that…Estimates of lichen growth rates in the maritime Antarctic
1 January, 1973
Using growth rates estimated from lichens growing on introduced substrata on Signy Island, South Orkney Islands (lat. 61 °S., long. 45 °W.), the two most recent moraines of a glacier…Read more on Estimates of lichen growth rates in the maritime Antarctic
Effects of a sucrose-free diet on the serum-lipid levels of men in Antarctica
1 January, 1973
Eighteen healthy young men on an Antarctic base were observed for 10 months. For a baseline period of 4 weeks they received a normal diet, then they were put on…Read more on Effects of a sucrose-free diet on the serum-lipid levels of men in Antarctica