Winter at the alpine timberline. Why does embolism occur in Norway spruce but not in Stone Pine?

From: Plant Physiology | Date: February 1, 2003| Author: | Copyright information

Winter at the Alpine Timberline. Why Does Embolism Occur in Norway Spruce But Not in Stone Pine?1

Conifers growing at the alpine timberline are exposed to frost drought and freeze-thaw cycles during winter-stress factors known to induce embolism in tree xylem. The two dominant species of the European Central Alps timberline were studied: Norway spruce (Picea abies [L.] Karst) and stone pine (Pinus cembra), which usually reaches higher altitudes. We hypothesized to find embolism only at the timberline and to observe less embolism in stone pine than in Norway spruce due to avoidance ...

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