Ecological Archives E096-211-A1
Anna R. Peschel, Donald R. Zak, Lauren C. Cline, and Zachary Freedman. 2015. Elk, sagebrush, and saprotrophs: indirect top-down control on microbial community composition and function. Ecology 96:2383–2393. http://dx.doi.org/10.1890/15-0164.1
Appendix A. Equations used to estimate shrub biomass in sample plots.
Table A1. Allometric equations used to estimate shrub biomass.
Shrub species |
Measurement (X) |
Allometric biomass equation |
Unit of biomass |
Source |
Artemisia tripartita |
X = percent cover (%) |
Y = 230.586(X) |
Mg/ha |
Riccardi et al. 2007 |
Symphoricarpos oreophilus |
X = crown volume (cm3) |
Y = 5.52 × 10-3(X0.799) |
grams |
Reiner et al. 2010 |
|
1Chrysothamnus vicsidiflorus |
X = crown volume (cm3) |
Y = 3.18 × 10-2 (X0.674) |
grams |
Reiner et al. 2010 |
Artemisia tridentata var. tridentata |
X = percent cover (%) |
Y = 230.586(X) |
Mg/ha |
Riccardi et al. 2007 |
|
Purshia tridentata |
X = percent cover (%) |
Y = 0.05(X) |
Mg/ha |
Riccardi et al. 2007 |
|
2Artemisia tridentata var. vaseyana |
X = crown volume (cm3) |
Y = 1.26 x 10-2 (X0.85) |
grams |
Reiner et al. 2010 |
|
Artemisia arbuscula |
X = crown volume (cm3) |
Y = 7.16 × 10-8 (X2.02) |
grams |
Reiner et al. 2010 |
1 The biomass equation for this species pertains to plants with 1–50% dead material. See literature cited for biomass equations for greater or less proportions of dead material on the target plant.
2 The biomass equation for this species pertains to plants with 0-15% dead material. See literature cited for biomass equations for greater proportions of dead material on the target plant.