Table 4 Comparison of diversity indices among vegetation types classified with snow cover duration (week)
Properties | Taxon | Snow cover duration (week) | F ratio | P | ||||
|---|---|---|---|---|---|---|---|---|
0 | 2 | 4 | 5 | 6 | ||||
Number of samples (n) | 12 | 9 | 7 | 5 | 21 | |||
Alpha diversity (species richness) | Total | 9.0 | 4.0 | 4.0 | 5.0 | 1.0 | ||
Lichens | 6.0 | 3.0 | 3.0 | 3.0 | 0.0 | |||
Mosses | 3.0 | 1.0 | 1.0 | 1.0 | 0.0 | |||
Algae | 0.0 | 0.0 | 0.0 | 1.0 | 1.0 | |||
Maximum species density (no./0.25m2) | 7.0 | 4.0 | 4.0 | 3.0 | 1.0 | |||
Species density (no./0.25m2) | Total | 3.7 ± 0.6 a | 3.2 ± 0.4 a | 2.7 ± 0.4 a | 2.0 ± 0.3 ab | 1.0 ± 0.0 b | 14.275 | 0.000 |
Lichens | 2.9 ± 0.4 a | 2.3 ± 0.3 ab | 1.7 ± 0.4 b | 1.4 ± 0.4 b | 0.0 ± 0.0 c | 28.224 | 0.000 | |
Mosses | 0.8 ± 0.3 a | 0.9 ± 0.1 a | 1.0 ± 0.0 a | 0.6 ± 0.2 ab | 0.0 ± 0.0 b | 10.855 | 0.000 | |
Species diversity (H′) | Total | 0.8 ± 0.2 a | 0.8 ± 0.1 a | 0.7 ± 0.1 a | 0.4 ± 0.1 ab | 0.0 ± 0.0 b | 17.142 | 0.000 |
Lichens | 0.7 ± 0.1 a | 0.5 ± 0.1 ab | 0.3 ± 0.1 abc | 0.1 ± 0.1 bc | 0.0 ± 0.0 c | 11.311 | 0.000 | |
Mosses | 0.1 ± 0.1 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.844 | 0.504 | |
Evenness (J′) | Total | 0.7 ± 0.1 | 0.8 ± 0.0 | 0.7 ± 0.1 | 0.5 ± 0.0 | – | 1.775 | 0.178 |
Lichens | 0.7 ± 0.1 | 0.7 ± 0.1 | 0.7 ± 0.2 | 0.4 ± 0.0 | – | 0.561 | 0.648 | |
Mosses | 0.6 ± 0.0 | – | – | – | – | – | NV | |
Dominant index (C) | Total | 0.6 ± 0.1 a | 0.5 ± 0.1 a | 0.6 ± 0.1 a | 0.8 ± 0.1 ab | 1.0 ± 0.0 b | 18.560 | 0.000 |
Lichens | 0.6 ± 0.1 a | 0.7 ± 0.1 ab | 0.8 ± 0.1 ab | 0.9 ± 0.1 b | 0.0 ± 0.0 c | 55.722 | 0.000 | |
Mosses | 0.5 ± 0.1 a | 0.9 ± 0.1 ab | 1.0 ± 0.0 b | 0.6 ± 0.2 ab | 0.0 ± 0.0 c | 21.186 | 0.000 | |