Ecological Archives A025-051-A1
John S. Kominoski, Amy D. Rosemond, Jonathan P. Benstead, Vladislav Gulis, John C. Maerz, and David W. P. Manning. 2015. Low-to-moderate nitrogen and phosphorus concentrations accelerate microbially driven litter breakdown rates. Ecological Applications 25:856–865. http://dx.doi.org/10.1890/14-1113.1
Appendix A. Saturation responses of leaf litter breakdown rates (k d-1) vs. soluble reactive phosphorus and dissolved inorganic nitrogen.
Table A1. Michaelis-Menten model results relating dissolved inorganic nitrogen (DIN; mg L-1) and soluble reactive phosphorus (SRP; mg L-1) effects on maple (Acer rubrum) and rhododendron (Rhododendron maximum) leaf litter breakdown rates (k d-1). Km is the half-saturation constant of DIN and SRP concentrations whereby the process rate is half of Vmax (the maximum breakdown rate). Data for R. maximum k vs. DIN are not reported because of poor model fits.
DIN |
SRP |
||||||
Vmax |
Km |
R² adj.; P value |
Vmax |
Km |
R² adj.; P value |
||
Acer rubrum k |
0.020 |
25.07 |
0.23, 0.010 |
0.020 |
4.93 |
0.30, 0.003 |
|
Rhododendron maximum k |
- |
- |
- , - |
0.010 |
14.64 |
0.73, < 0.001 |
|