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Table 2 Analysis of covariance (ANCOVA), univariate test results of tree species effects on relationships between relative increment (idr, ihr) and tree dimension (dbh, type III decomposition models with highest coefficients of determination)

From: Understory dynamics after disturbance accelerate succession from spruce to beech-dominated forest—the Siggaboda case study

 

SS

DF

MS

F

P

idr (r 2 = 0.33)

 dbh

3,209.56

1

3,209.56

46.8913

<0.01

 Tree species

20,521.32

2

10,260.66

149.9071

<0.01

 Error

7,529.15

110

68.45

 

 Total

38,453.11

113

 

ihr (r 2 = 0.66)

 th

4,432.99

1

4,432.99

20.07841

<0.01

 Tree species

23,436.64

2

11,718.32

53.07594

<0.01

 Error

18,766.64

85

220.78

 

 Total

5,5672.72

88

 
  1. dbh breast height diameter (1.3 m tree height) (cm), idr relative dbh increment 2004–2011 (%), th tree top height (m), ihr relative height increment 2004–2011 (%); only twice in 2004 and 2011 measured spruce and beech specimens with positive increment were included in the analyses
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Annals of Forest Science

ISSN: 1297-966X