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. 2012 Jun 8;64(4):964–972. doi: 10.1007/s00248-012-0076-0

Table 1.

Tree nitrogen content and isotope ratios by tissue type and mean

Number Percent nitrogen δ15N
Mean SD Mean SD
Boles in soil 19 0.47 0.07 −2.93 1.52
Boles in pit 19 0.49 0.09 −4.37 1.37
Branches in soil 19 0.58 0.08 −3.30 1.69
Branches in pit 19 0.58 0.08 −4.69 1.34
Needles in soil 1.22 0.15 −2.09 1.61
Needles in pit 19 1.25 0.19 −3.42 1.32
Roots in soil 19 0.32 0.13 −1.04 1.30
Roots in pit 19 0.25 0.08 −1.69 0.94
Forest mean 19 0.65 0.11 −2.34 1.53
Pit mean 0.64 0.11 −3.54 1.24