Bark-BeAT-Dendro
Abstract
Stable isotope data obtained from archived and freshly collected spruce annual rings from the Austrian Forest Inventory (ANFI) and from selected "problem areas" provide us with the basis for identifying the susceptibility of national forest stands to bark beetle infestation (Ips typographus). The focal points of this project are, on the one hand, the determination of climate-induced changes in the physiology of spruce (by means of stable isotope analysis in annual rings (> 60 years) from samples of suitable sites from the ANFI and soil inventory) and, on the other hand, the assessment of the susceptibility of forests to bark beetle infestation based on the isotope signature of archived and new drill cores from all over Austria. The stable isotope data are used i) to find out if and how drought stress has influenced infestation in the past, and ii) to predict how stands will respond to the bark beetle under futureclimate change scenarios. The data on the physiological response of trees will be combined with site-specific data on forest and soil properties available from the ANFI and the Austrian Forest Soil Inventory to test the relationship between soil water status, vapour pressure deficit and isotope chronologies. A translation of isotopic results into drought susceptibility information by closely examining intrinsic water use efficiency, stomatal conductivity, temporal water use balance and photosynthetic capacity will serve as a basis for drought susceptibility maps. Translated with www.DeepL.com/Translator (free version)
keywords dendrochronology stable isotopes drought climate change
Publikationen
Project staff
Michael Grabner
Priv.-Doz. Dipl.-Ing. Dr.nat.techn. Michael Grabner
michael.grabner@boku.ac.at
Tel: +43 1 47654-89128
Project Leader
01.10.2021 - 30.09.2024