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With a warming climate, northern ecosystems will face significant ecological changes such as permafrost thaw, increased frequency of forest fires, and shifting ecosystem boundaries including the spread of canopy-forming shrubs into tundra communities. A growing number of observations show...
Doctoral thesis. Critically reviews the art of phytolith analysis and presents new techniques to collection of samples, processing, mounting, and optical and SEM microscopic analyses. Includes results of analyses of samples from the Old Crow Basin, Yukon and lake areas in Alaska.