LiDAR crown & understory closure category

Foliar nutrition (mg∙kg⁻¹)

Significance

High crown

High crown

Low crown

Low crown

High understory

Low understory

High understory

Low understory

(HH)

(HL)

(LH)

(LL)

Sugar maple:

Ca

NS

4965.89 ± 565.79

5534.03 ± 192.17

5650.07 ± 626.43

5214.28 ± 429.92

Al

NS

69.85 ± 10.95

63.48 ± 9.13

70.85 ± 11.66

72.39 ± 10.33

K

NS

7470.56 ± 366.76

8152.25 ± 481.53

8311.45 ± 452.42

7911.42 ± 454.05

P

NS

1455.37 ± 175.26

1546.09 ± 222.51

1347.03 ± 136.33

1598.29 ± 215.66

Mg

NS

976.82 ± 107.59

1045.7 ± 50.46

1035.3 ± 107.52

972.79 ± 89.55

Mn

NS

1307.39 ± 192.33

1020.60 ± 104.65

1324.35 ± 169.05

989.51 ± 108.72

Ca:Al Molar Ratio

NS

55.71 ± 8.91

70.41 ± 11.09

70.14 ± 18.9

55.91 ± 8.49

C (%)

NS

48.82 ± 0.72

48.32 ± 0.50

47.61 ± 0.41

47.59 ± 0.45

N (%)

NS

2.45 ± 0.08

2.49 ± 0.05

2.50 ± 0.08

2.25 ± 0.07

Yellow birch:

Ca

**

7966.97 ± 489.31^b

10122.90 ± 667.88^a

7969.18 ± 384.25^b

8757.82 ± 472.02^ab

Al

NS

68.13 ± 8.32

59.01 ± 9.34

61.31 ± 9.24

51.73 ± 6.93

K

NS

9653.69 ± 748.75

11814.4 ± 972.45

11776.79 ± 714.89

11289.71 ± 974.94

P

NS

1425.87 ± 108.95

1479.61 ± 79.13

1291.43 ± 80.48

1729.22 ± 226.74

Mg

NS

2347.36 ± 140.4

2479.96 ± 132.97

2197.16 ± 88.13

2323.18 ± 125.26

Mn

NS

1794.31 ± 259.1

1727.24 ± 200.49

1522.94 ± 251.59

1322.55 ± 126.98

Ca:Al Molar Ratio

*

85.06 ± 8.35^b

132.98 ± 16.67^a

101.31 ± 13.83^ab

130.84 ± 18.4^ab

C (%)

NS

48.19 ± 0.63

47.67 ± 0.49

47.13 ± 0.4

47.61 ± 0.67

N (%)

NS

2.86 ± 0.06

2.84 ± 0.11

2.91 ± 0.09

2.79 ± 0.09