SPRUCE

Spruce and Peatland Responses Under Changing Environments
SPRUCE Logo

The SPRUCE experiment is being operated as the first whole-ecosystem, forest-scale experiment to increase temperature and CO2 concentrations from deep soil to tree canopies. The decade-long experiment is being carried out in a black spruce peatland ecosystem of northern Minnesota and consists of 10 specially-designed, enclosed plots that are 12 m in diameter and outfitted with heating infrastructures for air- and deep-soil warming, as well as a range of biological and environmental monitoring sensors.

Current Status: As of March 2015 the SPRUCE project infrastructure is largely in place for a spring 2015 initiation of whole-ecosystem warming treatments. Deep peat heating (see below) was initiated June 2014 to study the sensitivity of deep, ancient peat C stocks to warming independent from more active surface phenomenon. Extensive pretreatment characterization of the peatland being used in manuscripts on peatland processes and incorporated into the development of a wetland model with the capacity to address the C-cycle, nutrient cycle, water cycle and energy dynamics of peatland systems and wetlands in general.

Additional information and data can be found at http://mnspruce.ornl.gov/





DPH figure

Deep peat heating was initiated June 2014 to study the sensitivity of deep, ancient peat C stocks to warming independent from more active surface phenomenon.






Plot 19 enclosure

Specially-designed enclosed plots that are 12 m in diameter and outfitted with heating infrastructures.
Plot enclosure vista

Ten enclosed plots are positioned at selected locations in the S1 Bog.


Hypothesis

Figure illustrates the hypotheses to be tested at SPRUCE.

Additional information and data can be found at http://mnspruce.ornl.gov/