FACE: Stillberg CO2 enrichment and soil warming study

Overview

High elevation ecosystems are important in research about environmental change because shifts in climate associated with anthropogenic greenhouse gas emissions are predicted to be more pronounced in these areas than in most other regions of the world. This project involves a Free Air CO2 Enrichment (FACE) and soil warming experiment located in a natural treeline environment near Davos, Switzerland (Stillberg, 2200 m a.s.l.). Elevated atmospheric CO2 concentrations (+200 ppm) were applied from 2001 to 2009, and a soil warming treatment (+4 K) was added in 2007 (ongoing). The combined CO2 enrichment and warming treatment reflects conditions expected to occur in this region in approximately 2050. A broad range of ecological and biogeochemical research is carried out as part of this environmental change project.

Experimental setup

The experiment consists of 40 hexagonal 1.1 m2 plots, 20 with a Pinus mugo ssp. uncinata (mountain pine, evergreen) individual in the centre and 20 with a Larix decidua (European larch, deciduous) individual in the centre. A dense cover of understorey vegetation surrounds the tree in each plot, including the dominant dwarf shrub species Vaccinium myrtillus (bilberry), Vaccinium gaultherioides (group V. uliginosum agg., northern bilberry) and Empetrum nigrum ssp. hermaphroditum (crowberry) plus several herbaceous and non-vascular species.

At the beginning of the experimental period, the 40 plots were assigned to 10 groups of four neighbouring plots (two larch and two pine trees per group) in order to facilitate the logistics of CO2 distribution and regulation. Half of these groups were randomly assigned to an elevated CO2 treatment while the remaining groups served as controls and received no additional CO2. In spring 2007, one plot of each tree species identity was randomly selected from each of the 10 CO2 treatment groups and assigned a soil warming treatment, yielding a balanced design with a replication of five individual plots for each combination of CO2 level, warming treatment and tree species.

Data

Soil and air conditions have been monitored closely throughout the study period, with most measurements made during the combined CO2 x warming experiment (2007-2009).

Funding Information:

This work was supported by:
  • Funding information not available.

Citation:

Dawes, Melissa; Rixen, Christian; Hagedorn, Frank; Bebi, Peter (2016). FACE: Stillberg CO2 enrichment and soil warming study. WSL Institute for snow and avalanche research SLF. doi:10.16904/envidat.46.

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Data and Resources

Metadata

Field Values
DOI 10.16904/envidat.46
Publication State Published
Authors
  • Email: melissa.dawesfoo(at)slf.ch Given Name: Melissa Family Name: Dawes Affiliation: WSL Institute for snow and avalanche research SLF
  • Email: rixenfoo(at)slf.ch Given Name: Christian Family Name: Rixen Affiliation: WSL Institute for snow and avalanche research SLF
  • Email: frank.hagedornfoo(at)wsl.ch Given Name: Frank Family Name: Hagedorn Affiliation: WSL
  • Email: bebifoo(at)slf.ch Given Name: Peter Family Name: Bebi Affiliation: WSL Institute for snow and avalanche research SLF
Contact Person Given Name: Peter Family Name: Bebi Email: bebifoo(at)slf.ch Affiliation: WSL Institute for snow and avalanche research SLF
Subtitles
Publication Publisher: WSL Institute for snow and avalanche research SLF Year: 2016
Dates
  • Type: Created Date: 2001-01-01 End Date: 2009-12-31
Version 1.0
Type
General Type Dataset
Language English
Location Davos, Switzerland
Content License ODbL with Database Contents License (DbCL)    [Open Data]
Last Updated November 3, 2019, 16:32 (UTC)
Created November 4, 2016, 13:12 (UTC)

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