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Table 4 Statistical tests comparing forest structural metrics between landform types

From: Landform type mediates compositional change in a hurricane-disturbed sub-tropical forest

 

1997 DBH

2005 DBH

1997 height

2005 height

Kruskal-Wallis1

χ2

p

χ2

p

χ2

p

χ2

p

 Between landforms

26.924

< 0.001

62.538

< 0.001

36.152

< 0.001

24.458

< 0.001

Steel-Dwass test

Z

p

Z

p

Z

p

Z

p

 Riverine—slope

4.519

< 0.001

7.419

< 0.001

2.162

0.134

1.511

0.431

 Riverine—draw

2.553

0.052

2.959

0.016

− 2.462

0.066

− 2.480

0.063

 Riverine—ridge

4.793

< 0.001

4.764

< 0.001

0.741

0.881

0.984

0.759

 Slope—draw

− 1.549

0.408

− 4.539

< 0.001

− 6.047

< 0.001

− 4.773

< 0.001

 Slope—ridge

0.180

0.998

− 3.965

< 0.001

− 2.369

0.083

− 1.080

0.702

 Draw—ridge

1.756

0.295

1.400

0.499

4.563

< 0.001

4.140

< 0.001

  1. Positive Z-scores indicate the mean of the first group (2005) is larger than the mean of the second group (1997) and vice versa for negative scores
  2. 1DF = 3