Table 1 Diversity measures (richness, Shannon index H, inverse Simpson index 1/D) among asymptomatic and symptomatic Pinus contorta needles collected from Gunnison National Forest, Colorado, USA.
Needle treatment | Species | Predicted means (SE) | t-ratio | p-value |
|---|---|---|---|---|
Richness | ||||
Asymptomatic | L. concolor | 66.78 (4.02) | − 0.123 | 0.903 |
L montivaga | 67.62 (5.57) | |||
Symptomatic | L. concolor | 35.94 (4.02) | 3.842 | 0.0002 |
L montivaga | 9.71 (5.57) | |||
Shannon index (H) | ||||
Asymptomatic | L. concolor | 2.13 (0.09) | − 0.157 | 0.876 |
L montivaga | 2.16 (0.13) | |||
Symptomatic | L. concolor | 1.20 (0.09) | 5.799 | < 0.0001 |
L montivaga | 0.28 (0.13) | |||
Inverse Simpson index (1/D) | ||||
Asymptomatic | L. concolor | 0.68 (0.04) | − 0.604 | 0.547 |
L. montivaga | 0.72 (0.05) | |||
Symptomatic | L. concolor | 0.32 (0.04) | 4.352 | < 0.0001 |
L. montivaga | 0.06 (0.05) | |||
