Variable

n

R

95% CI

Q_among

P_among

Fertilizer

6.7

0.24

(NH₄)₂SO₃

7

1.24

1.04

–

1.48

NH₄

4

1.34

0.82

–

2.2

NH₄NO₃

72

1.28

1.18

–

1.4

NH₄NO₃+Urea

7

2.18

1.39

–

3.43

NO₃

5

1.61

1.01

–

2.57

Urea

24

1.24

1.12

–

1.38

Nitrogen Oxidation State

1.5

0.46

Mixed (NH+NO)

79

1.34

1.23

–

1.45

Reduced (NH)

35

1.26

1.15

–

1.39

Oxidized (NO)

5

1.61

1.01

–

2.57

Measurement

Forests

24.9

<0.0001

ANPP^*

11

1.53

1.23

–

1.91

Δ Basal area

7

1.16

1

–

1.35

Δ Diameter

6

1.67

1.36

–

2.04

Litterfall

9

1.03

0.93

–

1.14

Δ Volume

10

1.22

1.15

–

1.29

Grasslands

1.8

0.18

Peak biomass

21

1.55

1.39

–

1.72

Repeated measures

14

1.38

1.2

–

1.57