Skip to main content
. 2015 Mar 24;3(1):cov012. doi: 10.1093/conphys/cov012

Table 1:

Mean (±1 SD) light availability, structural attributes and functional traits for logged (n = 9) and unlogged plots (n = 17) and results from a Student's unpaired t-test, including the test statistic (t) and degrees of freedom

Community attribute Mean ± 1 SD for logged plots Mean ± 1 SD for unlogged plots t d.f.
Structural composition
 Total basal area (cm2) 49 265 ± 22 021 89 210 ± 33 182 −3.67** 23
 Stem density (stem number/m2) 0.03 ± 0.01 0.05 ± 0.01 −3.63** 16
 AGB (with height; kg) 2262 ± 1139 5091 ± 2876 −3.56** 23
 AGB (without height; kg) 930 ± 426 1840 ± 727 −4.02** 24
g1 0.58 ± 0.38 1.20 ± 0.53 −3.46** 22
Functional composition
 CWM WDABD (g/cm3) 0.57 ± 0.04 0.59 ± 0.02 −1.65 12
 CWM WDBA (g/cm3) 0.56 ± 0.03 0.59 ± 0.04 −2.17* 20
 CWM Hmax.ABD (m) 26.9 ± 3.8 27.9 ± 1.9 −0.72 10
 CWM Hmax.BA (m) 29.7 ± 5.3 32.2 ± 4.0 −1.25 13
 CWM DBHmax.ABD (cm) 76.3 ± 8.7 76.7 ± 9.3 −0.12 17
 CWM DBHmax.BA (cm) 95.6 ± 23.0 125.8 ± 53.1 −2.01 23

Abbreviations: ABD, abundance weighted; AGB, above-ground biomass; BA, basal area weighted; CWM, community-weighted mean; Hmax, maximum height; DBHmax, maximum diameter; g1, coefficient of skewness; WD, wood density. Significant tests are indicated as follows: *P < 0.05 and **P < 0.01.