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Table 2 Mean Shannon’s diversity index (H′ ± SD, n = 4) and mean species richness (richness ± SD, n = 4) of the control and roofed (reduced precipitation) subplot of the eight different managed stands during two growing seasons. For statistical analysis see Table S10–S14. We did not measure stand Schorfheide beech unmanged, because the understory coverage was <0.5%

From: Responses of the structure and function of the understory plant communities to precipitation reduction across forest ecosystems in Germany

Stand ID

Treatment

Spring 2012

Late summer 2012

Early summer 2013

Late summer 2013

H′

Richness

H′

Richness

H′

Richness

H′

Richness

Sbm

Control

0.12±0.18

1.5±0.5

1.01±0.34

4.5±1.1

1.48±0.10

4.3±0.4

1.14±0.03

4.0±0

Roof

0.64±0.20

2.5±0.5

0.85±0.43

4.0±1.2

1.21±0.05

5.5±0.9

1.30±0.26

5.0±0.7

Scm

Control

0.39±0.15

2.0±0

0.87±0.23

3.5±0.9

0.55±0.23

2.8±0.8

0.70±0.23

3.3±1.1

Roof

0.52±0.10

2.25±0.4

0.76±0.24

2.8±0.4

0.72±0.20

3.0±0

0.70±0.31

2.3±0.5

Hbu

Control

0.19±0.10

2.0±0

0.63±0.24

2.5±0.5

0.62±0.25

3.3±0.4

0.56±0.33

2.3±0.8

Roof

0.13±0.06

2.0±0

0.67±0.12

2.5±0.5

0.70±0.21

2.5±0.9

0.52±0.40

2.3±0.8

Hbm

Control

0.27±0.20

3.0±0

1.04±0.33

4.75±0.4

1.32±0.15

4.8±0.8

0.88±0.14

4.0±0.7

Roof

0.44±0.11

2.75±0.7

1.49±0.19

6.75±0.4

1.41±0.20

5.5±0.5

0.91±0.40

3.8±0.8

Hcm

Control

1.03±0.17

4.0±0

0.96±0.16

4.3±0.8

1.02±0.14

3.3±0.4

1.35±0.16

5.0±0.7

Roof

1.14±0.19

4.25±0.4

0.96±0.14

4.3±0.4

0.97±0.12

3.3±0.4

1.19±0.10

5.0±0.7

Abu

Control

0.43±0.27

2.0±0.7

1.29±0.12

5.5±0.5

1.13±0.34

4.0±1.2

1.08±0.29

4.5±1.5

Roof

0.51±0.30

2.0±0.7

0.90±0.34

3.5±0.5

1.10±0.43

4.0±1.6

0.66±0.66

2.8±1.8

Abm

Control

0.62±0.16

2.5±0.5

1.53±0.22

6.5±1.1

1.58±0.19

5.8±1.5

1.47±0.21

6.5±0.5

Roof

0.70±0.09

2.5±05

1.47±0.19

6.0±1

1.70±0.16

7.3±0.8

1.29±0.30

6.0±0.8

Acm

Control

0.72±0.05

4.0±0

1.19±0.20

6.5±1.1

1.20±0.22

5.0±1.0

1.41±0.12

7.3±1.1

Roof

0.63±0.16

5.0±0.7

1.42±0.05

7.0±0.7

1.34±0.07

6.3±0.8

1.37±0.13

6.5±0.9