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Effects of mobile tree islands on alpine tundra soils


, : Effects of mobile tree islands on alpine tundra soils. Ecology 82(1): 8-17

The effect of tree islands on the physical and chemical properties of soils formed in alpine tundra was investigated. Tree islands found above the tree line on a south-facing slope adjoining the east side of the saddle of Niwot Ridge, Boulder, Colorado, migrate across the tundra, and this phenomenon allows for the study of tree-induced changes on the properties of soils initially formed by tundra vegetation. Analysis of soil texture, cation exchange capacity, and nitrogen flux revealed that tree island passage reduced soil organic matter and the N storage potential of past tundra soils, and these effects possibly persist for centuries after the movement of a tree island.

US$19.90

DOI: 10.1890/0012-9658(2001)082[0008:EOMTIO]2.0.CO;2


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