Appendix D. Tables showing variance decomposition by (A) RDA and (B) CCA of the untransformed species data.

Table D1. Variance decomposition by RDA (on the covariance matrix) and CCA of the untransformed species data into its purely environmental (R

_{P_E}), pure historical (R_{P_H}), purely spatial (R_{P_S}), and various mixed components.

Fractions (variance components)

Herbs (P–A)

Woody plants (P–A )

Woody plants (Den.)

% of

% of

% of

TV

TVE

TV

TVE

TV

TVE

A) by RDA R

_{P_E}6.7

28.4

5.5

24.6

8.2

22.3

R

_{P_H}0.7

3.0

0.8

3.6

0.3

0.8

R

_{P_S}5.9

25.0

7.0

31.3

15.1

41.1

R

_{MX_E&H}0.6

2.5

0.5

2.2

0.8

2.2

R

_{MX_E&S}7.4

31.4

5.5

24.6

10.3

28.1

R

_{MX_H&S}1.3

5.5

2.4

10.7

2.2

6.0

R

_{MX_E&H&S}1.0

4.2

0.7

3.1

-0.2

-0.5

Residuals

76.4

77.6

63.3

B) by CCA R

_{P_E}5.9

36.8

4.5

24.6

7.1

19.7

R

_{P_H}0.8

3.7

1.0

5.2

0.7

2.7

R

_{P_S}10.7

29.4

6.5

35.4

5.7

36.0

R

_{MX_E&H}0.6

1.8

0.4

2.2

0.3

2.2

R

_{MX_E&S}8.9

19.6

4.3

23.7

3.8

29.9

R

_{MX_H&S}2.4

5.0

1.3

7.1

1.0

8.0

R

_{MX_E&H&S}0.5

3.7

0.3

1.8

0.7

1.7

Residuals

80.6

81.8

70.3

Notes: P–A = presence–absence data; Den. = density data; TV = total variance; TVE = total variance explained.