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 96:23832393. 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.


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