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Table 1 Shrub species list with an ecological description of each plant and its average cover with standard error by treatment type and its season of application, and years since treatment. Notably all species measured were native to California. The list includes endemism to California (CA) or chaparral (CH), and the plant’s response to fire whether an individual survives the fire by resprouting (SP), a population survives through seedlings (SD), or a combination of the two, or if it is unknown (UK). These calculations average across four experimental units for each treatment and its season of application that each have fifteen 15-meter transects for which shrub cover and composition were measured. The average cover can exceed 100 % because shrubs overlap one another. Nine, 10, and 11 years since treatments were merged into one year since treatment, 10. Asterisks (*) were used when standard errors could not be calculated because the species was only present once.

From: Decade-Long Plant Community Responses to Shrubland Fuel Hazard Reduction

      Scientific name  
      Umbellularia californica (Hook. & Arn.) Nutt. Toxicodendron diversilobum (Torr. & A. Gray) Greene Rhamnus crocea Nutt. Quercus wislizeni A. DC. Quercus durata Jeps. var. durata Quercus berberidifolia Liebm. Pickeringia montana Nutt. ex Torr. & A. Gray Mimulus aurantiacus (W. Curtis) Jeps. ssp. aurantiacus Heteromeles arbutifolia (Lindl.) M. Roem. Grossulariaceae Garrya fremontii Torr. Garrya elliptica Lindl. Eriodictyon californicum (Hook. & Arn.) Torr. Ericameria arborescens (A. Gray) Greene Cercocarpus montanus Raf. var. glaber (S. Watson) F.L. Martin Ceanothus foliosus C. Parry Ceanothus cuneatus (Hook.) Nutt. var. cuneatus Baccharis pilularis DC. Arctostaphylos stanfordiana Parry ssp. stanfordiana Arctostaphylos manzanita Parry ssp. glaucescens Arctostaphylos glandulosa Eastw. ssp. glandulosa Arctostaphylos canescens Eastw. Arctostaphylos Adans. sp. Adenostomafasciculatum Hook. & Arn.  
      Endemism Total average cover
      CA None CA CA CA and CH CA CA None CA None None None CA CA None CA CH None CA and CH CA CA CA and CH None CA and CH  
      Response to fire  
      SD and SP SD and SP SP SP SP SP SP SP SP UK SD and SP UK SD and SP UK SP SD SD SD SD SD SD and SP SP   SD and SP  
Treatment Control Growing seasons since treatment 0 Average ± SE   16±9    25±10 15±4   6±3     3±*   10±9 9±3   12±2   16±4 12±3 13±2 7±*   57±4 201
Fire fall 0    5±*     13±* 17±9          21±2 7±3 10±3 11±2 11±3 13±9   63±3 171
2        6±* 11±5    6±2       4±2 4±<1    7±5   1±<1 51±2 90
3        6±* 5±1   3±*      2±* 1±* 3±2 7±2    5±4   <1±<1 62±2 94
4         5±<1         10±* 2±<1 10±*    11±*   1±1 64±4 103
10   8±3      8±* 14±7 2±* 1±*   5±1 8±* 14±3   14±8 7±1 7±3 2±1   4±1    63±4 158
Fire spring 0             2±*      18±2 35±* 21±6   7±5    60±4 142
1         22±10    13±*           7±*    58±2 101
2       6±*         1±*    8±<1 11±6 10±*   15±3   11±5 49±4 110
3         24±6    13±*           15±*    67±3 119
4       5±*   24±7   13±*   37±1      3±2 1±<1   10±* 13±<1    68±2 174
10   9±4     35±*   24±9   29±*   7±5   8±*    6±2 14±9 7±* 14±5 15±5    50±5 218
Fire winter 0   3±*     1±* 4±1 9±2   4±*      5±1   19±3   25±6 17±11 17±5    55±4 159
1 2±*      10±* 2±<1 10±3    1±<1     5±2   29±12   20±4      54±2 133
2      5±1   6±2 7±3   4±* 1±*      1±1 5±2   70±6   10±2 14±11 18±6 54±3 196
3     3±*   1±* 5±2 10±2   1±*      6±1         1±1 62±3 89
4     3±<1    10±3 10±4   10±*       <1±* 4±2    38±11 10±4 4±* 1±<1 60±4 150
10 1±* 5±2    7±1 6±* 7±1 11±3   1±*   2±1    11±3 11±4 5±2   24±7 20±5 4±1    51±5 166
Mastication fall 0         4±*          14±2   9±5 13±3 13±2    61±4 112
1       6±5                5±<1    16±3 26
2      4±2 5±1           4±* 1±<1 1±<1    7±2    27±2 50
3      3±<1 5±2           14±9 3±1 1±1    8±3    36±2 71
10      23±* 6±2 4±* 3±*     1±*   10±* 1±* 9±3 8±2 7±3 5±3   8±4 <1±*   65±3 151
Mastication spring 0   10±*       13±12        15±*   19±3   16±5 20±5 8±3 14±2 3±2 55±4 172
1       10±4 6±*                  21±3 37
2      8±3 10±3   5±3         2±* 6±1     5±4   7±7 34±3 76
3       17±6 8±*           <1±<1     5±*   1±<1 31±3 63
4      24±11 11±2 6±* 9±3         2±2 2±1 <1±*   1±* 3±1   1±<1 44±2 103
10   18±7    7±2 16±2 14±* 15±11         6±3 12±2 2±1 9±1   4±1 9±7   58±3 171