To address the potential interactive effects of fire, aboveground biomass removal, and nutrient amendments on above- and belowground responses, a long-term field experiment was initiated in 1986 as part of the Konza Prairie Long-Term Ecological Research (LTER) program. The general goals of this experiment are: 1) to document both short- and long-term responses of plants and soils to fire, aboveground biomass removal (a surrogate for grazing in these small plots), and nutrient amendments (additions of N and/or P); and 2) to provide a better understanding of the mechanisms underlying tallgrass prairie responses to fire, aboveground biomass removal and nutrient enrichment. Standing crops of live and dead rhizomes (0.1 sq. m2 * 20cm deep samples) are taken in late summer periodically from 64 belowground plots. N & P content are determined on live and dead rhizomes. N & P for forb rhizomes are available for some plots in some years. **See archived rawdata files in Rm 215 Bushnell.
Location of Sampling Stations: HQC
Frequency of Sampling: Once every five years in August or September.
Two 5 cm diameter by 20 cm deep soil cores are sampled from each plot and combined. The roots are then washed, separated, and dried at 60°C. The dried material is then ground to pass a 2 mm screen and acid digested by the Kjedahl procedure. The solution is then analyzed for total-N and total-P by automated calorimetric analysis.
For additional metadata information see: http://lter.konza.ksu.edu/sites/default/files/DC.pdf
For additional methods information see: http://lter.konza.ksu.edu/sites/default/files/MM.pdf