Linking Restoration and Ecological Succession (Springer ... - Inecol

100 Joachim Schrautzer et al.
Species number/plot
Species number/plot
60
50
40
30
20
10
0
60
50
40
30
20
10
0
F = 7.17
p < 0.001
a
b
c
d
1 A 1 B 2 A 2 B 3 4 A 4 B 5
a
a
Land-use intensification sere F = 3.76
Abandonment: Sere A
a
p < 0.001
b
Abandonment: Sere B
I II III
IV
b
b
c
F = 3.92
p < 0.001
b
a
F = 3.28
p < 0.001
b
I II III
IV
a
a
c
Abandonment: Sere C
I II III
IV
Successional stage Successional stage
Figure 5.4 Change of species richness in the land-use intensification (stages 1A to 5, see Fig 5.1) and in stages
I–IV for abandonment seres A, B and C. Plot size of alder carrs c. 100 m 2 and of types with herbaceous vegetation
c. 16–25 m 2 . Medians, 25 and 75% percentiles , and ranges without outliers (horizontal lines) are shown. Kruskal-
Wallis-test (F and p) results are also shown. Different letters show significant differences (p < 0.05, Median test)
across stages.
As a generalization across the retrogressive succession from alder carrs to wet
pastures, C-balances progressively dropped; efficiency measures (NPP/MSR
and NPP/Transpiration) also dropped but not as consistently as C-balances.
Measures of N, hydrological budgets, and energy budgets started high (1A and
1B), then dropped (2A, 2B and 3), then rose again (4A, 4B and 5).
Table 5.5 Simulation results (WASMOD) for nitrogen and carbon budgets parameters, and efficiency
measures in stages of the land use intensification sere. Ecosystem types are from Fig. 5.1.
Ecosystem types
Indicator: 1A 1B 2A 2B 3 4A 4B 5
NNM (kg N ha −1 a −1 ) 38 56 14 27 11 28 84 125
N-Leaching (kg N ha −1 a −1 ) −15 −18 −9 −12 −6 −13 −46 −64
Denitr. (kg N ha −1 a −1 ) 17 29 3 7 3 12 52 100
N-balance (kg N ha −1 a −1 ) −8 −23 3 −2 −4 −16 −24 −35
NPP (kg C ha −1 a −1 )* 10 3 4.8 6.0 2.9 4 1 2.1 3.0 3.5
C-balance (kg C ha −1 a −1 )* 10 3 +2 0 −0.6 +0.4 −1.3 −1.2 −5.6 −7.3
NPP/MSR 1.8 1.4 0.8 1.1 0.6 0.9 0.5 0.6
NPP/Transpiration 422 516 300 377 94 209 284 350
b
b
a