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Table 2 Results on the comparison of root parameters between thinned and control plots (Kruskal-Wallis and U-test, α = 0.05, n = 90)

From: Thinning effects on biomass and element concentrations of roots in adjacent hornbeam and oak stands in Istanbul, Turkey

0–2a mm OT OC HT HC p 2–5 mm OT OC HT HC p > 5 mm OT OC HT HC p
Massa 842.94 ±84.75 997.84 ±106.56 804.95ac  ±88.18 667.69 ±68.80 0.032 Mass 419.82 ±54.24 411.19 ±42.30 480.55 ±56.08 384.01 ±42.82 0.762 Mass 1059.87 ±61.61 1988.76 ±196.42 871.50 ±62.58 783.40 ±54.15 0.000
C 41.22a
±0.41
39.78b
±0.50
40.27abc
±0.70
40.80ab
±0.68
0.259 C 46.44a
±0.37
45.54a
±0.49
48.66b
±0.33
47.27ac
±0.45
0.000 C 46.59a
±0.36
46.41a
±0.28
47.80b
±0.37
47.72b
±0.35
0.013
N 1.42a
±0.04
1.45a
±0.02
1.49a
±0.03
1.48a
±0.03
0.745 N 1.10a
±0.03
1.12a
±0.03
1.08a
±0.02
1.08a
±0.03
0.290 N 0.95a
±0.03
0.97a
±0.03
0.90a
±0.02
0.94a
±0.02
0.579
Pb 29.04a
±1.06
24.75b
±0.50
31.64c
±0.78
16.69d
±0.37
0.000 Pb 9.21 a
±0.97
9.01a
±0.71
12.64 b
±0.69
4.99 c
±0.23
0.000 Pb 2.50 a
±0.17
3.02 a
±0.19
8.13 b
±0.62
3.88 c
±0.18
0.000
Cd 0.49b
±0.01
0.44a
±0.01
0.56c
± 0.02
0.52bc
±0.02
0.000 Cd 0.28 a
±0.01
0.23 b
±0.01
0.23 b
±0.01
0.18 c
±0.01
0.000 Cd 0.16 a
±0.01
0.13 bd
±0.01
0.23 c
±0.01
0.15 ad
±0.01
0.000
Ni 35.38b
±0.67
31.52a
±0.42
34.85a
±0.73
36.91b
±0.66
0.001 Ni 14.43 ad
±1.03
10.57 b
±0.40
17.77 ac
±1.97
13.16 bd
±1.02
0.081 Ni 16.69 a
±2.09
15.92 a
±2.14
16.95 a
±2.29
18.36 a
±2.59
0.780
Zn 52.67bc
±1.01
47.55a
±0.66
50.59ab
±1.72
55.58c
±1.83
0.003 Zn 21.74 a
±1.32
21.17 a
±0.87
18.51 a
±0.69
23.65 a
±1.47
0.191 Zn 11.08 a
±0.89
10.04 a
±0.44
18.08 b
±1.02
16.08 c
±1.03
0.000
Cu 22.06 a
±0.32
22.46 a
±0.16
21.67 b
±0.45
21.04 b
±0.20
0.000 Cu 6.21 a
±0.21
6.44 a
±0.14
6.35 a
±0.25
6.90 a
±0.29
0.315 Cu 4.12 a
±0.21
4.83 bc
±0.12
4.65 ac
±0.22
4.83 bc
±0.18
0.029
Mn 613 a
±15.7
478 b
±8.44
812 c
±17.1
1008 d
±16.7
0.000 Mn 243 a
±10.4
198 b
±7.09
671 c
±27.9
548 d
±28.9
0.000 Mn 159.1 a
±7.61
133.7 b
±5.11
549.5 c
±39.3
506 c
±27.6
0.000
Al 15742a
±339
14,879 b
±146
13786bc
±323
13151c
±162
0.000 Al 2473 ad
±114
3069 b
±135
2347 ac
±167
2624 bd
±166
0.002 Al 1386 a
±159
2023 bd
±130
1616 c
±105
2400 d
±141
0.000
Fe 9374a
±186
9860b
±64.5
7271c
±181
6533d
±113
0.000 Fe 1242 a
±72.5
1714 b
±103
1154 a
±68.6
1420 a
±123
0.000 Fe 958 ac
±115
1436 bd
±95.4
954 c
±69.2
1345 d
±84.9
0.000
Ca 5533a
±51.5
5686b
±40.6
4004c
±143
5302ad
±91.3
0.000 Ca 11,218 a
±492
10379 ±414 5075 b
±191
6674 c
±264
0.000 Ca 10,361 a
±575
9252 a
±207
6219 b
±288
6894 b
±209
0.000
Na 1083b
±28.3
1002a
±30.4
937a
±37
1140b
±39.8
0.001 Na 763 a
±33.3
808 a
±37.8
788 a
±36.7
828 a
±36.3
0.821 Na 660 a
±53.1
830 b
±47.1
756 ab
±43.8
674 ab
±34.3
0.020
K 3007a
±75.6
2764b
±75.3
2022c
±57.3
2504d
±57.9
0.000 K 2011 a
±137
1720 bd
±96.4
1397 c
±77.7
1852 ad
±94.1
0.004 K 1453 ac
±82.5
1883 a
±131
1201 b
±56.2
1428 c
±58.7
0.000
Mg 2533 a
±35.4
2401 b
±15.2
1593 c
±31.3
2060 d
±28.8
0.000 Mg 1118 ac
±40.2
978 b
±30.9
1081 bc
±48.6
1296 d
±57
0.001 Mg 836.9 a
±53.6
814 a
±43.6
994 b
±39.9
1107 c
±44.1
0.000
P 732 a
±14.4
673 b
±13.3
710 abc
±26.6
737 ac
±14.9
0.194 P 298 ac
±8.6
239 b
±6.1
271 c
±12.6
292 c
±10.4
0.000 P 226 a
±6.2
184 b
±6.3
216 ac
±9.4
253 d
±7.7
0.000
S 2060a   ±75.6 2205 a
±60.8
3109 b
±146.2
3104 b
±136.9
0.000 S 1409 ±54.8 1365 a
±38.2
2616 b
±130.4
3118 c
±72.7
0.000 S 1073 a    ±39.3 1146 a
±50.6
2018 b
±134.6
2662 c
±108.0
0.000
  1. a: Taken from Akburak (2013), “±” standard error, data are mean values, OT: Oak thinned area, OC: Oak control area, HT: Hornbeam thinned area, HC: Hornbeam control area, mass: g∙m−2, C and N: %, other elements: mg∙kg−1