|
|
Appendix E (1)
Abundance and cover summaries for tree, shrub and herbaceous species in
sampled communities. Numbers in parentheses represent that portion of
the mean number of trees per plot that is Pinus contorta. + =
less than 0.1% cover (from Zeigler, 1978).
| Community | No.
Plots | Total No.
Tree
Species | Mean No.
Tree Species
Per
Plot | Mean No.
Trees
Per Plot | Total No.
Shrub Species | Mean
No.
Shrub Species
Per Plot | Mean Cover
of
Shrub Species | Total
No.
Herbaceous
Species | Mean
No.
Herbaceous
Species
Per Plot | Mean
Percent
Cover of
Herbaceous
Species | Total No. of
Species | Mean
No. of
Species
Per Plot |
|---|
|
| Pinus contorta/Carex-Stipa | 15 | 5 | 1.8 |
234
(.96) | 2 | <.1 | + | 20 | 6 |
6 | 27 | 7.8 |
| Pinus contorta/Carex-Lupinus | 14 | 5 | .9 |
210
(.97) | 3 | 1.0 | 2 | 21 | 7 |
25 | 29 | 9.9 |
| Pinus contorta/Purshia/Stipa | 1 | 1 | 1 |
168
(1.0) | 1 | 1 | 4 | 6 | 6 |
15 | 8 | 8 |
| Abies magnifica var. shastensis-Tsuga/Mertensiana/Carex-Lupinus |
20 | 3 | 2.7 |
295
(.52) | 3 | .04 | 1 | 30 | 7.5 |
24 | 36 | 10.6 |
| Abies lasiocarpa/Haplopappus/Aster-Elymus | 16 | 4 | 3.5 |
283
(.61) | 5 | 1.8 | 4 | 30 | 9.3 |
50 | 39 | 14.6 |
| Abies lasiocarpa/Collomia-Lathyrus | 1 | 3 | 3 |
95
(.63) | 3 | 3 | + | 22 | 22 |
92 | 30 | 28 |
| Tsuga mertensiana/Vaccinium | 6 | 4 | 3.5 |
293
(..69) | 3 | 1.7 | 13 | 12 | 4.5 |
5 | 19 | 9.7 |
| Mixed Conifer/Arctostaphylos | 5 | 5 | 3.0 |
117
(.80) | 1 | 1 | 17 | 7 | 3.2 |
5 | 13 | 7.2 |
| Mixed Conifer/Arctostaphylos-Purshia/Carex | 1 | 4 | 4 |
79
(.78) | 2 | 2 | 7 | 6 | 6 |
21 | 12 | 12 |
| Abies concolor/Bromus carinatus-Lupinus | 2 | 3 | 2.5 |
278
(.49) | 3 | 2.5 | 11 | 17 | 12 |
47 | 23 | 17 |
|
Appendix E (2)
Comparison of age structure of the principal plant communities. Mean
interval between classes was calculated as the mean of the intervals
between two consecutive P. contorta age classes at least one of
which antedates 1850. Community 3 = P. contorta/Carex -
Stipa; 4 = P. contorta/Carex - Lupinus; 8 = A.
magnifica var. shastensis - T. mertensiana/Carex -
Lupinus; 7 = A. lasiocarpa/Haplopappus/Aster -
Elymus; 10 = T. mertensiana/Vaccinum; 11 = Mixed
Conifer/Arctostaphylos.
|
| Mean | Mean
Stand Age | Mean Age of
Latest Class |
Mean No.
Classes
Per Plot | Mean Interval
Between Classes*
(Years) |
|---|
|
| 3 | 175 | 131 | 2.4 | 60 |
| 4 | 115 | 96 | 1.7 | 48 |
| 8 | 122 | 109 | 1.6 | 40 |
| 7 | 112 | 98 | 1.5 | 48 |
| 10 | 128 | 115 | 1.4 | 27 |
| 11 | 151 | 141 | 1.7 | 25 |
|
*Only plots with multiple age classes.
Mean Stand Age
3>4, 3>7, 3>8 (p = .01)
3>10 (p = .05)
11>4, 11>7, 11>8 (p = .05)
Mean Age of Latest Class
3>4, 3>7 (p = .01)
3>8 (p = .05)
8>4, 8>7 (p = .01)
11>4, 11>8, 11>7 (p = .01)
11>10 (p = .05)
|
Mean Class Interval
Not significantly different
Mean No. Classes Per Plot
3>8 (p = .01)
3>4, 3>10, 3>7 (p = .05)
11>10 (p = .05)
|
|
