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PhD. Topics

Institute of Forest Ecology

Topic
Stem diameter variations of forest trees, their seasonal dynamics at different growth stages in relation to physiology, climatic regions and weather variability
PhD. program
Ecology and Conservation of Biodiversity
Name of the supervisor
Ing. Marek Ježík, PhD.
Contact:
Receiving school
Faculty of Ecology and Environmental Sciences, Technical University in Zvolen
Annotation
Frequency and intensity of extreme environmental stresses, such as droughts and heat waves have increased during the last decades, and are expected to keep increasing along the 21st century. The health and survival of forest ecosystems will be closely linked to their adaptability to changing environmental conditions. High-resolution dendrometers show the capability to capture complex signals integrating tree stems´ irreversible plastic growth, reflecting in particular the dynamics of xylogenesis, and reversible elastic fluctuations related mainly to the atmospheric evaporative demands, water availability and subsequently tissues´ water potential and transpiration. They are therefore considered to be unique high-potency tools for capturing forest productivity and sensitivity to environmental stresses. The aim of the work is to identify and compare the potential of dendrometers for the detection of threshold values of stress and vitality of trees and stands in different growth stages.