Effects of freeze-thaw events on arctic soil organisms

Updated 2003-04-24

The project aims to describe the effects of increased frequency of freeze-thaw cycles on the soil fauna in an arctic environment. Little is known about the effects of global warming on soil animals in habitats of limited nutrient supply and with high climatic stress. Manipulations of the soil temperature will be conducted to increase the frequency of freeze-thaw events. Springtail and mite species diversity and abundance will be investigated, together with screenings of the nutrient availability in the soil after such events. Mesocosm studies will be conducted for a closer study of the effects of temperature changes on decomposition and mineralization. Species of springtails and mites will be returned to the laboratory to investigate cold and drought hardiness. A project including soil warming has been conducted in Abisko for over a decade, and it is our intent to include investigations of soil fauna (springtails and mites), and the interactions between these and the microbial fauna. It is interesting to see whether 10 years of soil warming have changed the springtail and mite species diversity and abundance, and whether this has affected the natural nutrient cycles.

Time frame

Status
Ongoing
Project time span
2001 - 2003
Data collection
not specified
Data processing
not specified
Data reporting
not specified

Contact information

Contact person
Heidi Sjursen
Address
National Environmental Research Institute Vejlsøvej 25 DK-8600 Silkeborg Denmark

Parameters and Media

Not specified

Geography

Regions studied
Abisko Scientific Research Station

Data availability

Samples/specimens archived in specimen banks?
No

Methods & Procedures

Not specified

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?
No
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