Ecological Archives E094-034-A3

Vidya Suseela, Jeffrey S. Dukes. 2013. The responses of soil and rhizosphere respiration to simulated climatic changes vary by season. Ecology 94:403–413. http://dx.doi.org/10.1890/12-0150.1

Appendix C. A table of the correlation of soil respiration with different environmental variables predicted using temperature, moisture, and combined exponential and quadratic (Mielnick-Dugas) functions.

Table C1. Correlation (R2) of soil respiration with different environmental variables predicted using temperature (y = aebx), moisture (y = y0 + ax + bx2) and combined exponential and quadratic (Mielnick-Dugas) functions. Numbers in bold indicate the best fit of the three functions in cases where the fit is greater than 0.2.

Microbial
respiration
Annual Spring Summer Fall
Treatment Temp Moisture Melnick
Dugas
Temp Moisture Melnick
Dugas
Temp Moisture Melnick
Dugas
Temp Moisture Melnick
Dugas
Drought +
unwarmed
0.58 0.23 0.23 0.73 0.30 0.18 0.00 0.41 0.00 0.47 0.09 0.00
Drought
+ low
warming
0.48 0.24 0.00 0.46 0.10 0.16 0.00 0.48 0.11 0.43 0.18 0.00
Drought +
medium
warming
0.25 0.05 0.15 0.17 0.00 0.58 0.00 0.71 0.67 0.17 0.00 0.00
Drought
+ high
warming
0.24 0.06 0.00 0.02 0.46 0.67 0.00 0.49 0.00 0.34 0.11 0.00
Ambient +
unwarmed
0.72 0.18 0.43 0.68 0.52 0.59 0.00 0.00 0.00 0.92 0.73 0.00
Ambient
+ low
warming
0.73 0.08 0.45 0.65 0.14 0.64 0.00 0.29 0.00 0.64 0.48 0.00
Ambient
+ medium
warming
0.67 0.16 0.36 0.51 0.14 0.23 0.00 0.47 0.00 0.65 0.50 0.00
Ambient
+ high
warming
0.52 0.07 0.20 0.26 0.29 0.57 0.00 0.60 0.00 0.29 0.17 0.00
Wet +
unwarmed
0.76 0.14 0.68 0.80 0.10 0.73 0.00 0.03 0.00 0.74 0.38 0.00
Wet + low
warming
0.79 0.15 0.39 0.73 0.12 0.68 0.00 0.09 0.00 0.81 0.59 0.00
Wet +
medium
warming
0.59 0.17 0.42 0.44 0.28 0.00 0.00 0.36 0.24 0.62 0.61 0.00
Wet + high
warming
0.52 0.08 0.11 0.26 0.02 0.62 0.00 0.39 0.14 0.34 0.51 0.00

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