Table 4 Comparison of forest stand density (stems ha−1) of trees between burned (n = 60) and unburned (n = 60) plots in Big Basin Redwoods State Park, Boulder Creek, California, USA. Data were collected in 2019 to determine the influence of burns conducted between 1999 and 2011 on vegetation, forest structure, and fuel load. SESE = Sequoia sempervirens, NODE = Notholithocarpos densiflorus, PSME = Pseudotsuga menziesii, ARME = Arbutus menziesii, QU spp. = all Quercus species combined. Dashes (-) indicate insufficient sample size for analysis
Tree | Mean density in stems ha−1 (SE) able 5 | Nested ANOVA results | |||
|---|---|---|---|---|---|
Unburned | Burned | F | P | df | |
SESE >10 cm | 207.96 (22.03) | 205.84 (19.63) | 0.0011 | 0.97 | 1 |
NODE >10 cm | 216.45 (21.89) | 114.59 (18.08) | 15.36 | <0.0010 | 1 |
PSME >10 cm | 42.44 (10.75) | 31.83 (10.77) | 0.99 | 0.32 | 1 |
QU spp. >10 cm | 6.36 (4.71) | 0.00 (0.00) | 1.97 | 0.16 | 1 |
ARME >10 cm | 0.00 (0.00) | 4.24 (4.24) | 1.00 | 0.32 | 1 |
All trees >10 cm | 473.22 (27.92) | 356.51 (24.55) | 10.10 | 0.0019 | 1 |
SESE <1 m | 3 463.21 (1075.94) | 2779.91 (479.04) | 0.35 | 0.14 | 1 |
SESE >1 m | 1 239.29 (677.52) | 1088.62 (487.68) | 0.036 | 0.85 | 1 |
NODE <1 m | 6 992.21 (989.13) | 4034.05 (661.12) | 12.43 | <0.0010 | 1 |
NODE >1 m | 3 338.01 (337.62) | 823.36 (127.34) | 61.37 | <0.0010 | 1 |
PSME <1 m | 10.61 (6.27) | 36.08 (13.57) | - | - | - |
PSME >1 m | 10.61 (6.96) | 27.59 (15.46) | - | - | - |
QU spp. <1 m | 40.32 (17.77) | 10.61 (6.27) | - | - | - |
QU spp. >1 m | 4.24 (2.98) | 0.00 (0.00) | - | - | - |
ARME <1 m | 0.00 (0.00) | 8.49 (8.49) | - | - | - |
ARME >1 m | 0.00 (0.00) | 0.00 (0.00) | - | - | - |
All trees <1 m | 10 506.35 (1504.89) | 6869.13 (745.38) | 5.98 | 0.016 | 1 |
All trees >1 m | 4 592.15 (683.72) | 1939.57 (505.91) | 30.88 | <0.0010 | 1 |