Environmental Engineering Reference
In-Depth Information
Ash
20
0·2
−0·70
−0·14
Birch
20
0·2
−0·70
−0·14
Alder
20
0·2
−0·70
−0·14
Pine
20
0·2
−0·70
−0·14
−Σ P
i
log P
i
=
0·70
Woodland B
Oak
40
0·4
−0·40
−0·16
Ash
30
0·3
−0·52
−0·16
Birch
30
0·3
−0·52
−0·16
−Σ P
i
log P
i
=
0·48
Woodland C
Pine
90
0·9
−0·05
−0·05
Birch
10
0·1
−1·00
−0·10
−Σ P
i
log P
i
=
0·15
Figure 23.1
The definition of connectance in ecosystems: (a)
a system with four species in the community; (b) a system
with six species in the community.
