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Table 2 Quaking aspen regeneration density (stems ha−1) from burned and unburned transects at four sites in Lassen Volcanic National Park, California, USA. Note: burned and unburned regeneration densities were compared with the Wilcoxon rank sum (BLK and GR2) and Wilcoxon signed-rank tests (BUT and SL).

From: Quaking Aspen Regeneration Following Prescribed Fire in Lassen Volcanic National Park, California, USA

 

Median

  

Site

unburned

burned

W statistic

P-value

BUT

5 167a

5 167

2

1.00

GR2

12 667

1 667

2

0.40

BLK

21 833

20 750

1

0.67

SL

1 167a

4 000

27

0.03

  1. a Unburned density from pre-fire measurements.