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Global Change Master Directory (GCMD)
Long term studies of effects of climate manipulations on subarctic ecosystems
Entry ID: Experimental_Warming_Ecology_Arctic_Dorrepaal_NL


Summary
Abstract: Since June 2000, we have been conducting a field manipulation experiment simulating climate scenarios in a subarctic Sphagnum-dominated blanket bog near Abisko, N Sweden. This experiment is unique in that it mimics six different combinations of (current and predicted) spring, summer and winter climate, each replicated five times. Passive spring and summer warming is achieved through transparent tent-like open-top chambers (OTC, 2.5 m diameter). In winter the same OTCs are effectively used to capture and retain snow, which in this wind-exposed site is often blown away from ambient plots but into the OTCs. The statistical design is factorial, i.e. there are 30 OTCs. i.e. 15 + 15 OTCs for ambient and warmed summer treatment and, within each summer treatment 5 for ambient spring and winter conditions, 5 with ambient spring but OTC in winter, and 5 with OTC both in spring. The replicates are organized in blocks each containing all 6 treatments.

Here we are measuring or have measured a range of features of the microclimate, soil (peat) properties, vegetation composition, diversity, structure and growth, carbon and nutrient exchange parameters, aspects of species responses (plants, microbes, soil invertebrates).

The experiment, which is planned to run until at least 2020, is embedded in international scientific networks for global change investigations, for instance the International Tundra Experiment (ITEX).

Datasets have been or are being assembled for:
- microclimate in the different treatments, including continuous recording of soil temperatures (ongoing) and (2000-2005) air temperatures; weekly snow depth; soil moisture and air humidity (in specific years); permafrost depth (active layer depth);
- soil (peat) properties at different depths;
- vegetation structure and composition down to species level, both vascular plants and cryptogams (2-yearly, through point-frame recording with associated biomass calibrations);
- plant species and functional diversity
- Sphagnum growth (in several specific years)
- annual shoot increments of target vascular species (in specific years)
- vegetative and reproductive phenology
- nutrient recycling, e.g. through resorption processes
- litter decomposition rates at the ecosystem and species level (environmental and species effects on decomposition; specific years)
- ecosystem level carbon exchange including soil respiration and photosynthesis; 13C signatures as indicators of respiration responses to warming for different peat horizons
- microbial community composition with special focus on their contributions on different nitrogen-transforming functions
- community composition of invertebrate soil fauna (Collembola, mites) and Thecamoebic protozoans (both being prepared).

Related URL
Link: View Related Information
Description: Department of Systems Ecology at VU University Amsterdam

Geographic Coverage
 N: 68.35 S: 68.35  E: 18.82  W: 18.82

 Min Altitude: 340M  Max Altitude: 370M  Min Depth: 0  Max Depth: 0.09M

Data Set Citation
Dataset Creator: Rien Aerts, Hans Cornelissen
Dataset Title: Long term studies of effects of climate manipulations on subarctic ecosystems
Dataset Release Place: The Netherlands
Dataset Publisher: NIOZ NPDC
Version: Not provided


Temporal Coverage
Start Date: 2000-06-01
Stop Date: 2020-12-31


Location Keywords
CONTINENT > EUROPE > NORTHERN EUROPE > SCANDINAVIA > SWEDEN
GEOGRAPHIC REGION > ARCTIC
GEOGRAPHIC REGION > POLAR


Science Keywords
AGRICULTURE >ANIMAL SCIENCE >ANIMAL ECOLOGY AND BEHAVIOR    [Definition]
BIOSPHERE >ECOSYSTEMS >TERRESTRIAL ECOSYSTEMS >ALPINE/TUNDRA    [Definition]
BIOSPHERE >ECOSYSTEMS >TERRESTRIAL ECOSYSTEMS >WETLANDS >PEATLANDS    [Definition]


Platform
FIELD INVESTIGATION    [Information]


Instrument
TULLGREN FUNNEL    [Information]


Access Constraints
N/A


Use Constraints
Please contact principal investigators at the department of Systems Ecology (rien.aerts [at] falw.vu.nl, hans.cornelissen [at] falw.vu.nl) at VU University Amsterdam for use and proper citation


Keywords
Ecology
Tullgren Funnel Fauna Extractor
Climate change on a sub-arctic bog
Sphagnum
Experimental data
Abisko
Litter quality
Moisture gradient
Temperature gradient


Data Set Progress
ACTIVE


Data Center
Netherlands National Polar Data Centre, Royal Netherlands Institute for Sea Research, Netherlands Organization for Scientific Research, Netherlands    [Information]
Data Center URL: http://www.nioz.nl/dmg

Data Center Personnel
Name: IRA VAN DEN BROEK
Phone: +31 222 369 420
Fax: +31 222 319 674
Email: ira.van.den.broek at nioz.nl
Contact Address:
P.O. Box 59
City: Den Burg
Postal Code: 1790 AB
Country: The Netherlands



Data Center Personnel
Name: TACO F. DE BRUIN
Phone: +31-222-369 479
Fax: +31-222-319674
Email: bruin at nioz.nl
Contact Address:
P.O. Box 59
City: Den Burg
Postal Code: 1790 AB
Country: The Netherlands



Distribution
Distribution_Media: internet


Personnel
RIEN AERTS
Role: TECHNICAL CONTACT
Role: INVESTIGATOR
Phone: +31 (0)20 59 87211
Fax: +31 (0)20 59 87123
Email: rien.aerts at ecology.falw.vu.nl
Contact Address:
De Boelelaan 1085
City: Amsterdam
Postal Code: 1081 HV
Country: The Netherlands


HANS CORNELISSEN
Role: TECHNICAL CONTACT
Role: INVESTIGATOR
Role: METADATA AUTHOR
Phone: +31 (0)20 59 86962
Email: hans.cornelissen at ecology.falw.vu.nl
Contact Address:
De Boelelaan 1085
City: Amsterdam
Postal Code: 1081 HV
Country: The Netherlands


RICHARD VAN LOGTESTIJN
Role: TECHNICAL CONTACT
Role: INVESTIGATOR
Phone: +31 (0)20 59 87247
Email: richard.van.logtestijn at ecology.falw.vu.nl
Contact Address:
De Boelelaan 1085
City: Amsterdam
Postal Code: 1081 HV
Country: The Netherlands


ELLEN DORREPAAL
Role: INVESTIGATOR
Role: METADATA AUTHOR
Email: ellen.dorrepaal at emg.umu.se
Contact Address:
Dept. of Forest Ecology and Management
Swedish University of Agricultural Sciences
City: UmeƄ
Postal Code: S901-83
Country: Sweden


Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2009-11-13
Last DIF Revision Date: 2018-08-29



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