Ecological Archives
E086-080-A2
Hong Liu and Eric S. Menges. 2005. Winter fires promote greater vital rates in the Florida keys than summer fires. Ecology 86:1483–1495.
Appendix B. Statistical
results of logistic regression and ANOVA on Chamaecrista keyensis
vital rates.
TABLE B1.
Effects of control, summer-, and winter-burn treatments on vital rates of Chamaecrista
keyensis: summary of logistic regression.
|
Time since
fire
|
Factor
|
Vital rates
|
|
Annual survival
|
Fruit or not§
|
|
|
df
|
P
|
|
df
|
P
|
|
Analyses including
only blocks with a winter-burn treatment
|
|
Year 1 †
|
Block
|
31.64
|
2
|
0.000
|
49.92
|
2
|
0.000
|
| |
Fire treatment
|
231.57
|
2
|
0.000
|
1.10
|
2
|
0.577
|
| |
Block × fire
treatment
|
9.02
|
4
|
0.061
|
26.39
|
4
|
0.000
|
|
Year 2 ‡
|
Block
|
4.54
|
1
|
0.033
|
4.07
|
1
|
0.044
|
| |
Fire treatment
|
5.87
|
2
|
0.053
|
22.38
|
2
|
0.000
|
| |
Block × fire
treatment
|
0.07
|
2
|
0.965
|
1.50
|
2
|
0.473
|
|
Year 3 ‡
|
Block
|
5.10
|
1
|
0.024
|
0.03
|
1
|
0.862
|
| |
Fire treatment
|
13.13
|
2
|
0.001
|
32.66
|
2
|
0.000
|
| |
Block × fire
treatment
|
5.13
|
2
|
0.077
|
1.108
|
2
|
0.575
|
|
Analyses excluding
the winter-burn treatments
|
|
Year
1
|
Block
|
36.83
|
3
|
0.000
|
70.97
|
3
|
0.000
|
| |
Fire treatment
|
264.59
|
1
|
0.000
|
4.22
|
1
|
0.040
|
| |
Block × fire
treatment
|
18.89
|
3
|
0.000
|
39.48
|
3
|
0.000
|
|
Year 2
|
Block
|
26.66
|
3
|
0.000
|
22.53
|
3
|
0.000
|
| |
Fire treatment
|
0.45
|
1
|
0.504
|
49.23
|
1
|
0.000
|
| |
Block × fire
treatment
|
11.74
|
3
|
0.008
|
37.88
|
3
|
0.000
|
Notes:
Bold indicates P < 0.05. Italic indicates P < 0.1.
Bonferroni adjustments were not applied here.
† Analysis involved Orchid,
Poisonwood, and Iris blocks.
‡ Analysis involved Orchid
and Poisonwood blocks.
§ Non-seedling plants
only.
Table B2. Effects of control, summer-, and winter-burn treatments on Chamaecrista
keyensis vital rates: summary of ANOVA.
|
Time since
fire
|
Factor
|
Vital rates
|
|
Annual stem
growth
|
Number of seedlings
per plot§
|
|
Type III MS
|
df1,
df2
|
F
|
P
|
Type III MS
|
df1,
df2
|
F
|
P
|
|
Analyses including only blocks
with a winter-burn treatment
|
|
Year 1 †
|
Block
|
18.9
|
2, 792
|
14.4
|
0.000
|
0.03
|
2,116
|
0.1
|
0.945
|
| |
Fire treatment
|
36.8
|
2, 792
|
28.0
|
0.000
|
2.3
|
2,116
|
3.7
|
0.027
|
| |
Pyf
|
|
|
|
|
0.03
|
1,116
|
0.1
|
0.771
|
| |
Block × fire
treatment
|
6.4
|
4, 792
|
2.5
|
0.045
|
0.2
|
4,116
|
0.2
|
0.945
|
| |
Block × Pyf
|
|
|
|
|
1.5
|
2,116
|
2.4
|
0.092
|
| |
Fire treatment × Pyf
|
|
|
|
|
0.2
|
2,116
|
0.3
|
0.753
|
|
Year 2‡
|
Block
|
1.5
|
1, 485
|
1.7
|
0.196
|
1.9
|
1,142
|
3.9
|
0.050
|
| |
Fire treatment
|
10.4
|
2, 485
|
5.9
|
0.003
|
5.1
|
2,142
|
5.3
|
0.006
|
| |
Pyf
|
|
|
|
|
11.2
|
1,142
|
23.0
|
0.000
|
| |
Block × fire
treatment
|
3.1
|
2, 485
|
1.8
|
0.174
|
1.2
|
2,142
|
1.2
|
0.299
|
| |
Block × Pyf
|
|
|
|
|
0.6
|
1,142
|
1.2
|
0.285
|
| |
Fire treatment × Pyf
|
|
|
|
|
1.0
|
2,142
|
1.1
|
0.352
|
|
Year 3‡
|
Block
|
5.2
|
1, 800
|
8.6
|
0.003
|
4.5
|
1, 98
|
14.2
|
0.000
|
| |
Fire treatment
|
31.3
|
2, 800
|
25.9
|
0.000
|
2.5
|
2, 98
|
3.8
|
0.025
|
| |
Pyf
|
|
|
|
|
4.7
|
1,98
|
14.8
|
0.000
|
| |
Block × fire
treatment
|
0.40
|
2, 800
|
0.3
|
0.719
|
0.6
|
2, 98
|
1.0
|
0.373
|
| |
Block × Pyf
|
|
|
|
|
0.00
|
1,98
|
0.01
|
0.918
|
| |
Fire treatment × Pyf
|
|
|
|
|
0.07
|
2,98
|
0.11
|
0.893
|
|
Analyses excluding the winter-burn
treatments
|
|
Year 1
|
Block
|
124
|
3, 928
|
64.1
|
0.000
|
7.5
|
3, 179
|
6.9
|
0.000
|
| |
Fire treatment
|
9.8
|
1, 928
|
15.2
|
0.000
|
0.5
|
1, 179
|
1.5
|
0.223
|
| |
Pyf
|
|
|
|
|
0.07
|
1,179
|
0.2
|
0.000
|
| |
Block × fire
treatment
|
62.0
|
3, 928
|
32.0
|
0.000
|
7.9
|
3, 179
|
7.3
|
0.000
|
| |
Block × Pyf
|
|
|
|
|
3.6
|
3,179
|
3.26
|
0.023
|
| |
Fire treatment × Pyf
|
|
|
|
|
0.04
|
1,179
|
0.1
|
0.737
|
|
Year 2
|
Block
|
11.4
|
3, 1054
|
5.4
|
0.001
|
5.5
|
3, 158
|
5.0
|
0.002
|
| |
Fire treatment
|
32.6
|
1, 1054
|
46.6
|
0.000
|
0.3
|
1, 158
|
0.9
|
0.344
|
| |
Pyf
|
|
|
|
|
7.2
|
1,158
|
19.7
|
0.000
|
| |
Block × fire
treatment
|
0.91
|
3, 1054
|
0.4
|
0.730
|
1.5
|
3, 158
|
1.3
|
0.263
|
| |
Block × Pyf
|
|
|
|
|
1.4
|
3,158
|
1.2
|
0.296
|
| |
Fire treatment × Pyf
|
|
|
|
|
0.8
|
1,158
|
2.1
|
0.148
|
Notes:
Pyf = previous year fruit production. Bold indicates P < 0.05, italic
indicates P < 0.1. Shaded area indicates non-applicable tests.
Bonferroni adjustments were not applied here.
† Analysis involved Orchid,
Poisonwood, and Iris blocks.
‡ Analysis involved Orchid
and Poisonwood blocks.
§ Census plots with seedling
occurrence only.
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