10.16904/envidat.46
Melissa Dawes
Melissa
Dawes
WSL Institute for Snow and Avalanche Research SLF
Frank Hagedorn
Frank
Hagedorn
0000-0001-5218-7776
Swiss Federal Institute for Forest, Snow and Landscape Research WSL
Peter Bebi
Peter
Bebi
0000-0001-8868-6569
WSL Institute for Snow and Avalanche Research SLF
Lia Lechler
Lia
Lechler
WSL Institute for Snow and Avalanche Research SLF
Esther R. Frei
Esther R.
Frei
0000-0003-1910-7900
Swiss Federal Research Institute WSL
Christian Rixen
Christian
Rixen
0000-0002-2486-9988
WSL Institute for Snow and Avalanche Research SLF
FACE: Stillberg CO2 enrichment and soil warming study
2016
WSL Institute for Snow and Avalanche Research SLF
CARBON DIOXIDE
CLIMATE CHANGE
EXPERIMENT
SOIL TEMPERATURE
STILLBERG
VEGETATION
Christian Rixen
Christian
Rixen
2001-01-01
en
dataset
https://www.envidat.ch/dataset/face-stillberg
https://www.envidat.ch/dataset/0d88fc12-285e-4a64-b2d6-d8a7bf0603f8
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Background information
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 compared to most other regions of the world. This project involved 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 until 2009, and a soil warming treatment (+4 °C) was applied from 2007 until 2012. 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 was carried out as part of this environmental change project.
Experimental design
The experiment consisted 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 surrounded 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 ten 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 description
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). The data comprise of air temperature, soil temperature, soil moisture, sapflow, tree diameter and CO2 measurements.
9.8675439656
46.7716544001
Davos, Switzerland
Swiss National Science Foundation (2001-2005)
31-061428.00
Swiss National Science Foundation (2007-2010)
315200-116861
ANR - Biodiversité (2006-2008)
Velux Foundation (2007-2012)
371
CCES-ETH Project ‘MOUNTLAND’