Table 1 Trends in tree size across the Amazon basin

From: Increasing tree size across Amazonia

 

Mean (t0)

Absolute annual trend

Relative annual trend (%)

Stem BA

Mean (m2)

4.78 × 10−2

1.45 × 10−4 (1.08 × 10−4 to 1.82 × 10−4)

0.33 (0.24 to 0.41)

↑

Median (m2)

2.18 × 10−2

3.75 × 10−5 (2.11 × 10−5 to 5.38 × 10−5)

0.19 (0.12 to 0.27)

↑

Maximum (m2)

1.03

4.55 × 10−3 (1.92 × 10−3 to 7.23 × 10−3)

0.58 (0.38 to 0.78)

↑

Total BA (m2 ha−1)

26.53

5.52 × 10−2 (3.49 × 10−2 to 7.54 × 10−2)

0.24 (0.16 to 0.33)

↑

Gini coefficient

0.57

4.78 × 10−5 (3.09 × 10−4 to 6.48 × 10−4)

0.09 (0.06 to 0.1)

↑

Shape parameter (γ)

0.92

8.17 × 10−4 (3.46 × 10−4 to 1.28 × 10−3)

0.09 (0.04 to 0.14)

↑

Scale parameter (β)

104.99

0.28 (0.20 to 0.36)

0.30 (0.22 to 0.37)

↑

Stem numbers

 

Total stems (ha−1)

565.74

−0.45 (−0.90 to0.01)

−0.06 (−0.14 to0.02)

 

<200 mm (ha−1)

359.07

−0.54 (−0.93 to −0.15)

−0.12 (−0.22 to −0.02)

↓

200–399 mm (ha−1)

164.20

−0.08 (−0.25 to0.09)

0.04 (−0.08 to0.17)

 

>400 mm (ha−1)

42.47

0.18 (0.11 to 0.23)

0.66 (0.40 to 0.92)

↑

Mean stem BA by size class

 

<200 mm (m2)

1.56 × 10−2

1.3 × 10−5 (7.5 × 10−6 to 1.9 × 10−6)

0.09 (0.05 to 0.12)

↑

200–399 mm (m2)

6.97 × 10−2

2.02 × 10−5 (−3.7 × 10−6 to4.4 × 10−5)

0.04 (−0.01 to0.08)

 

≥ 400 mm (m2)

0.26

4.6 × 10−4 (2.5 × 10−4 to 6.6 × 10−4)

0.19 (0.11 to 0.27)

↑

Total stem BA by size class

 

< 200 mm (m2 ha−1)

5.60

−4.16 × 10−3 (−1.02× 10−2 to1.82 × 10−3)

−0.03 (−0.14 to0.07)

 

200–399 mm (m2 ha−1)

9.83

−2.39 × 10−3 (−1.26 × 10−2 to7.92 × 10−3)

0.07 (−0.05 to0.20)

 

≥400 mm (m2 ha−1)

11.10

6.23 × 10−2 (4.61 × 10−2 to 7.84 × 10−2)

0.84 (0.60 to 1.09)

↑

  1. Bootstrapped mean and 95% CI (in brackets) of absolute and relative trends in tree size parameters. Non-significant trends are in italics. Arrows show direction of trends for those that are significant.
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