II.—On a Sodalite Syenite (Ditroite) from Ice River Valley, Canadian Rocky Mountains
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چکیده
منابع مشابه
Persistent organic pollutants in air and vegetation from the Canadian Rocky Mountains.
The exchange of chlorinated organic pollutants between air and vegetation in cold, mountain environments was investigated through the extraction of coniferous vegetation and high-volume air samples collected from the Canadian Rocky Mountains during the summers of 1999 and 2000. Concentrations of several compounds in vegetation increased as temperatures decreased, whereas atmospheric concentrati...
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Snowshoe hares are considered the primary prey of Canada lynx throughout their range. Relative to northern populations, hares occurring in mountainous regions at southern latitudes are thought to remain at low and stable densities through time. Hence, the ecology of associated southern lynx populations is expected to resemble that of northern populations during the low phase of the hare populat...
متن کاملCaeoma cassiopae sp. nov., a rust on Cassiope tetragona in the Canadian Rocky Mountains.
Caeoma cassiopae sp. nov. (Uredinales) is described on the arctic-alpine shrub Cassiope tetragona. It was found in three locations in the Rocky Mountains of west-central Alberta, and is the first rust reported on the genus Cassiope. The sori resemble the uredinia of species in the genus Chrysomyxa. The host in the Ericaceae also suggests affinity with that genus. However, the spore morphology, ...
متن کاملAlbedo induced radiative forcing from MPB outbreaks in Rocky Mountains
Introduction Conclusions References
متن کاملHow the Mountain Pine Beetle (Dendroctonus ponderosae) Breached the Canadian Rocky Mountains
The mountain pine beetle (MPB; Dendroctonus ponderosae Hopkins), a major pine forest pest native to western North America, has extended its range north and eastward during an ongoing outbreak. Determining how the MPB has expanded its range to breach putative barriers, whether physical (nonforested prairie and high elevation of the Rocky Mountains) or climatic (extreme continental climate where ...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1902
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s001675680018104x