Relating Plant Biodiversity in Forests with the Spatial Scale of Ecosystem Processes
Table 3
Parameters of the hyperbolic saturation model (9) and error measures for the close-to-nature European beech (Fagus sylvatica) forests types (1–4) with ecological site factors according to Table 1.
Ecosystem type 1
Mercuriali-Fagetum sylvaticae
Number of relevés N
244
Mean sample area of relevés
0.07 ha
Mean species number of relevés (standard deviation)
Median of species number
33
Mode* of species number
33
Parameter q
0
0.5
1
2
6.52
4.09
2.95
1.86
[ha]
0.002
0.012
0.019
0.016
0.21
0.50
0.73
1.05
RMSE
0.0149
0.0019
0.0019
0.0003
RMSE%
0.33
0.05
0.08
0.02
Ecosystem type 2
Melico-Fagetum sylvaticae
Number of relevés N
300
Mean sample area of relevés
0.06 ha
Mean species number of relevés (standard deviation)
Median of species number
20
Mode* of species number
20
Parameter q
0
0.5
1
2
6.33
3.33
2.11
1.37
[ha]
0.002
0.008
0.011
0.012
0.19
0.43
0.70
1.03
RMSE
0.0072
0.0025
0.0003
0.0004
RMSE%
0.17
0.09
0.01
0.03
Ecosystem type 3
Milio-Fagetum sylvaticae
Number of relevés
203
Mean sample area of relevés
0.07 ha
Mean species number of relevés (standard deviation)
Median of species number
14
Mode* of species number
14
Parameter q
0
0.5
1
2
5.60
3.34
1.88
0.98
[ha]
0.009
0.025
0.025
0.024
0.30
0.46
0.65
1.21
RMSE
0.0098
0.0046
0.0020
0.0020
RMSE%
0.22
0.22
0.15
0.15
Ecosystem type 4
Majanthemo-Fagetum sylvaticae
Number of relevés N
158
Mean sample area of relevés
0.10 ha
Mean species number of relevés (standard deviation)
