According to some treatises, arctic and alpine sub-biomes are ecologically similar, whereas others find them highly dissimilar. Most peculiarly, large areas of northern tundra highlands fall outside of the two recent subdivisions of the tundra biome. We seek an ecologically natural resolution to this long-standing and far-reaching problem. We studied broad-scale patterns in climate and vegetati...

Before the magnetic storm sudden commencement during the November 2, 1967, solar particle event, the access of 1.2to 40-Mev protons into the high-latitude portion of the northern polar region was delayed by ~20 hours. At the same time the access delay for 10to 40-Mev protons was •1 hour in the southern polar region a•d at middle northern latitudes. The implications of the north-south asymmetry ...

The H component of geomagnetic field shows a daytime maximum in low iatitudes. It is explained as due to two circular(Sq)current systems in the ionospheric E region, with foci at about 30° latitude, one in each hemisphere, Northern and Southern. At the dip equator, the two current systems accentuate each other. In addition, the vertical Hall currents are greatly inhibited causing alarge, vertic...

THE data reported here were part of a clinical and metabolic study of Eskimos in 1935, during the Canadian Government Eastern Arctic Patrol on the R.M.S. Nascopie. They included Eskimos in Hudson Bay and Strait, the more northerly parts of Baffin Island and in Devon and Ellesmere Islands, as far north as 760 12' latitude-828 nautical miles from the Pole. The clinical and other metabolic data we...

Introduction Latin America constitutes a large and geographically diverse region of the New World. Physiographically it is characterized by a high precipitous mountain range, the Sierra Madres in Central America and the Andes in South America with a narrow Pacific coastal plain. Broad welldrained low-lying basins are found on the eastern slopes of these mountains that run into the Atlantic and ...

[1] The Subtropical Front (STF) marking the northern boundary of the Southern Ocean has a steep gradient in sea surface temperature (SST) of approximately 4 C over 0.5 of latitude. Presently, in the region south of Tasmania, the STF lies nominally at 47 S in the summer and 45 S in the winter. We present here SST reconstructions in a latitudinal transect of cores across the South Tasman Rise, so...

ENGLISH/ANGLAIS] This original work assesses the vitamin D status of healthy, asymptomatic cohort of postmenopausal women in Karnal, Haryana, northern India, located at a latitude of 28°42’N. The prevalence of vitamin D deficiency is 52.37 %, while that of vitamin D insufficiency is 14.28 %. The mean serum 25(OH) vitamin D level is21.0± 13.5ng/ml. This paper highlights the high occurrence of lo...

A survey was conducted from May to Oct of 2011 of the parasitoid community of the imported cabbageworm, Pieris rapae (Lepidoptera: Pieridae), in cole crops in part of the eastern United States and southeastern Canada. The findings of our survey indicate that Cotesia rubecula (Hymenoptera: Braconidae) now occurs as far west as North Dakota and has become the dominant parasitoid of P. rapae in th...

A global compilation of deep-sea isotopic records suggests that Maastrichtian ocean-climate evolution was tectonically driven. During the early Maastrichtian the Atlantic intermediate-deep ocean was isolated from the Pacific, Indian, and Southern Oceans; deep water formed in the high-latitude North Atlantic and North Pacific. At the early/late Maastrichtian boundary a major reorganization of oc...