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Projekt StartClim2012.C: Forest disturbance and humus loss

Subproject of: StartClim2012 – scientific coordination (StartClim2012)

Project Leader
Godbold Douglas L., BOKU Project Leader
Type of Research
Applied Research
Katzensteiner Klaus, Project Staff
Mayer Mathias, Project Staff
Rewald Boris, Project Staff
Sanden Hans, Project Staff
BOKU Research Units
Institute of Forest Ecology
Funded by
Bund (Ministerien), Austria
Forest soils are world-wide the largest and longest storage pools for organic carbon. Disturbance events such as wind-throw and bark beetle attack change the carbon dynamics in soils and results in an increase in mineralisation. The loss of the tree layer results in changes the activity of mycorrhizal and saprotrophic fungi, with and increase in activity of the saprotrophs. This increase in activity has been considered to be the mechanism behind the increase in mineralization. The area to be investigated is in -the calcareous Alps of Upper Austria, and has been affected by wind-throw and subsequent bark beetle attacks. To investigate the temporal changes after disturbance the sites have been arranged in a pseudo-chronosequence. In November 2011 four trenched plots were established in the control areas. On the pseudo-chronosequence and the trenching plots the biomass of the extramatrical mycelium will be measured using in-growth bags, the proportions of mycorrhizal hyphae and saprotrophic hyphae distinguished using 13C analysis. These biomasses will be compared to measurements of soil nutrients (N and P) and soil CO2 efflux. The objective of the project is the investigate the mechanisms involved in soil organic matter loss, and in particular the effect of the loss of mycorrhizal activity on mineralisation of soil organic matter.
forest ecology;

** Mayer, M; Sanden, H; Rewald, B; Godbold, DL; Katzensteiner, K Increase in heterotrophic soil respiration by temperature drives decline in soil organic carbon stocks after forest windthrow in a mountainous ecosystem.

FUNCT ECOL. 2017; 31(5): 1163-1172. WoS FullText FullText_BOKU

Godbold, DL; Göransson, H; Mayer, M; Katzensteiner, K; Rewald, B (2013): Störungen im Waldsystem und Humusverlust. Endbericht von StartClim2012.C.

StartClim2012: Anpassung an den Klimawandel – erste Beiträge zur Umsetzung der österreichischen Anpassungsstrategie: BMLFUW, BMWF, ÖBF, Land Oberösterreich, 32 FullText

Göransson, H; Lehtinen, T; Mayer, M; Nilsson, LO; Mayer, F; Rewald, B (2013): Changes in soil organic matter and decomposition due to defoliation of sub-Artic birch stands by insect outbreaks.

Interact-TA, European Comission, 3

Godbold, DL; Göransson, H; Mayer, M; Katzensteiner, K; Rewald, B (2013): Disturbance of forest stands and humus loss.

In: Kromp-Kolb, H; Besci, B; Litschauer, M (Eds.), Adaptation to climate change in Austria: “Soils” - Final Report StartClim 2012, 16-18; Institute of Meteorology, Department of Water, Atmosphere and Environment, BOKU – University of Natural Resources and Life Sciences, Vienna, Austria FullText

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