Biocomplexity in the High Arctic

Carbon coupling and water cycles research

This research is funded by the following grant:

Welker, J. M., Hallet, B., Sletten. R., Schimel, J., and Fahnestock, J. T. 2002. . Coupling of carbon and water cycles in a cold, dry ecosystem: Integrative physical, chemical and biological processes and their controls on CO2 exchange. Biocomplexity in the Environment, National Science Foundation

Photos of Thule, Greenland research sites

	Dr. Birgit Hagedorn sampling for soil solution chemistry analysis.
Matthew Rogers and Katie Nagel carrying open-topped warming chambers for deployment at the International Tundra Experiment (ITEX) Fen site.
	Derek Garnas returning from stream flow monitoring.
One of the neighbors.
	A plot at the site of the fertilization experiment, which tests the effects of increased nutrient supply on ecosystem structure and function.
The field camp for a 2005 field class that brought students from across the United States to learn about the ecology and geology of Thule.
	The participants of the 2005 field class.
This experiment uses infrared heat lamps to test the effects of increased temperatures on ecosystem processes.
	Katie Nagel and Matthew Rogers taking a CO2 Flux measurement at the North Mountain warming site
Dr. Jennifer Horwath collecting soil in a soil pit. This work led to an improved estimate of soil carbon stocks in the Thule area.
	Seth Arens standing near a snow fence. This fence creates a snow drift, which allows us to test the effects of increased winter snow accumulation on a host of ecosystem processes.
Dr. Claudia Czimczik and Matthew Rogers in a snow pit collecting a snow sample.
	A view from above the snow fences at the Polar Desert Site.
Dr. Robert Sletten and assistant measuring snow depth along a transect near the North Mountain warming site.
Sunset over North Star Bay. A welcome site at the end of a long summer.