Recent changes in the thermal regime of the Arctic and related tundra expansion in higher latitudes resulted in an intense development of dendrochronological and dendroecological studies in the polar regions. In last decade we observed a significant increase in the use of tree-ring growth analysis in high latitudes where radial growth of woody plants, from shrubs to perennial herbs, is studied. Thermal limitations of cambial growth in the Arctic enable mainly dendroclimatological studies, which application requires a construction of reliable tree-ring chronologies.
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