ARS | Publication request: Prairie Heating And CO2 Enrichment (PHACE) project: Semi-arid grassland responses to elevated CO2 and warming.

Submitted to: Shortgrass Steppe Symposium
Publication Type: Abstract Only
Publication Acceptance Date: January 11, 2007
Publication Date: January 11, 2007
Repository URL: http://sgslter.colostate.edu/News/sgs_symposium_07/abstracts/LeCain_abstract.pdf
Citation: Morgan, J.A., Migletta, F., Kimball, B.A., Parton, W., Lecain, D.R., Pendall, E., Williams, D., Blumenthal, D.M., Smith, D.P., Hardy, E.M., et al. 2007. Prairie Heating And CO2 Enrichment (PHACE) project: Semi-arid grassland responses to elevated CO2 and warming. Shortgrass Steppe Symposium, January 2007, Ft. Collins, CO.

Technical Abstract: The new multi-factor Prairie Heating and CO2 Enrichment is a field experiment for subjecting a northern mixed-grass prairie, with and without weeds, to elevated CO2 and warming. This new experiment combines Free Air CO2 Enrichment (FACE) technology with a newly designed ceramic heater system for experimental warming. DAYCENT model projections of the experimental conditions suggest that increased CO2 (ambient plus 230 ul l-l CO2) and temperature (ambient plus 1.5 C daytime and 3.0 C nighttime) treatments for the next five years will alter soil water and nutrient cycling, imposing strong indirect effects on ecosystem productivity.