One-Way Analysis of Variance (Species Richness per Plot, or Alpha-Diversity)
Analysis of Variance
Source DF SS MS F P
Factor 3 35.06 11.69 3.97 0.014
Error 44 129.42 2.94
Total 47 164.48
Individual 95% CIs For Mean
Based on Pooled StDev
Level N Mean StDev ---+------+------+------+---
S Dudley 12 8.917 1.505 (------*------)
S Langda 12 6.667 1.371 (------*------)
S LL Upl 12 7.583 2.234 (------*------)
S LL Low 12 8.417 1.621 (------*------)
---+------+------+------+---
Pooled StDev = 1.715 6.0 7.2 8.4 9.6
Two Sample T-Test and Confidence Interval
Two sample T for S Dudley vs S LL Upl
N Mean StDev SE Mean
S Dudley 12 8.92 1.51 0.43
S LL Upl 12 7.58 2.23 0.65
95% CI for mu S Dudley - mu S LL Upl: ( -0.29, 2.96)
T-Test mu S Dudley = mu S LL Upl (vs not =): T= 1.71 P=0.10 DF= 19
Two Sample T-Test and Confidence Interval
Two sample T for S Langdale vs S LL Low
N Mean StDev SE Mean
S Langda 12 6.67 1.37 0.40
S LL Low 12 8.42 1.62 0.47
95% CI for mu S Langda - mu S LL Low: ( -3.02, -0.48)
T-Test mu S Langda = mu S LL Low (vs not =): T= -2.86 P=0.0095 DF= 21
Two Sample T-Test and Confidence Interval
Two sample T for S Langdale vs S Dudley
N Mean StDev SE Mean
S Langda 12 6.67 1.37 0.40
S Dudley 12 8.92 1.51 0.43
95% CI for mu S Langda - mu S Dudley: ( -3.47, -1.03)
T-Test mu S Langda = mu S Dudley (vs not =): T= -3.83 P=0.0010 DF= 21
One-Way Analysis of Variance (Basal Area per plot, roughly, “Biomass”)
Analysis of Variance
Source DF SS MS F P
Factor 3 183858983 61286328 2.79 0.051
Error 44 965244489 21937375
Total 47 1.149E+09
Individual 95% CIs For Mean
Based on Pooled StDev
Level N Mean StDev -----+------+------+------+-
BA LU 12 4392 1720 (------*------)
BA LL 12 9279 7865 (------*------)
BA LP 12 8058 3676 (------*------)
BA DH 12 5459 3069 (------*------)
-----+------+------+------+-
Pooled StDev = 4684 3000 6000 9000 12000