Mountain ecosystems are particularly sensitive to climate change, which in part causes encroachment of woody plants at the treeline ecotone, with repercussions on advance and ecosystem carbon balance. Yet, studies investigating long-term trends radial growth as well year-to-year response several tree shrub species change scarce, especially Pyrenees where dendroecological hitherto critically lac...

Drought stress can cause xylem embolism in trees when the water potential (psi) in the xylem falls below specific vulnerability thresholds. At the alpine timberline, frost drought is known to cause excessive winter embolism unless xylem vulnerability or transpiration is sufficiently reduced to avoid critical psi. We compared annual courses of psi and embolism in Picea abies, Pinus cembra, Pinus...

Plants and plant products, including essential oils, are globally recognized for their medicinal therapeutic values. Various methods have been used to obtain oils efficient isolation from the material. In this research, vacuum hydrodistillation (VHD) was isolate oil juniper berry (Juniperus communis L). Using GC-MS analysis, chemical composition of obtained examined, which compared with commerc...