Ecological Archives E095-030-A4

Adam F. A. Pellegrini, William A. Hoffmann, Augusto C. Franco. 2014. Carbon accumulation and nitrogen pool recovery during transitions from savanna to forest in central Brazil. Ecology 95:342–352. http://dx.doi.org/10.1890/13-0290.1

Appendix D. Tissue stoichiometry and δ15N.

Table D1. Statistical comparison of tissue N concentration, C:N ratio, and δ15N between highest and lowest biomass stands (plots 7 and 1, respectively) using a two-tailed t test.

Sample

mg N /g sample

C:N

δ15

 

p

p

p

D. miscolobium

0.86

0.99

0.03

M. fallax

0.41

0.51

0.26

M. guianensis

0.13

0.06

0.43

S. macrocarpa

0.48

0.67

0.29

Fine Roots

0.13

0.19

 0.95

 

Table D2. Statistical analysis of foliar and fine root N across the gradient in woody biomass. Regressions were performed on log transformed data for M. guianensis and S. macrocarpa and untransformed data for D. miscolobium and M. fallax.

Sample

Tissue %N

 

df

R²

F

p

D. miscolobium

1,19

0.01

0.15

0.705

M. fallax

1,20

0.02

0.3

0.592

M. guianensis

1,17

0.36

9.52

0.007

S. macrocarpa

1,19

0.1

2.15

0.159

Fine Roots

1,18

<0.001

0

0.951


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