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Table 2 Mean (± standard error, minimum–maximum) DBH-based stand structural heterogeneity and ΔBA-based tree growth variation in the different CTRN treatments (n = 6 per treatment) quantified using the structural complexity index (SCI) 1 to 3 and 8 to 10 years since thinning (YST)

From: Evaluation of 10-year temporal and spatial variability in structure and growth across contrasting commercial thinning treatments in spruce-fir forests of northern Maine, USA

Treatment

YST

Structural heterogeneity (SCIDBH)

Growth variation (SCIΔBA)

1–3

8–10

1–3

8–10

Control

 

5.81 ± 0.08 (5.20–6.40)

5.58 ± 0.07 (5.20–6.13)

4.51 ± 0.17 (3.44–5.85)

4.94 ± 0.19 (3.32–6.45)

33% Crown

 

4.20 ± 0.19 (3.21–5.69)

4.18 ± 0.21 (2.91–5.68)

4.50 ± 0.35 (2.24–7.93)

5.22 ± 0.34 (2.75–7.67)

33% Dominant

 

3.47 ± 0.21 (1.99–4.89)

3.37 ± 0.31 (1.78–5.56)

3.81 ± 0.28 (2.56–7.45)

4.86 ± 0.51 (2.47–8.95)

33% Low

 

3.07 ± 0.15 (2.24–4.25)

3.42 ± 0.16 (2.59–4.73)

4.25 ± 0.24 (2.39–6.04)

5.26 ± 0.36 (2.55–7.47)

50% Crown

 

4.26 ± 0.17 (2.88–5.41)

3.91 ± 0.24 (2.85–5.87)

4.79 ± 0.33 (2.75–7.81)

5.30 ± 0.38 (2.75–8.28)

50% Dominant

 

2.76 ± 0.15 (1.94–3.68)

2.49 ± 0.23 (1.58–4.03)

3.82 ± 0.40 (1.72–7.83)

4.73 ± 0.63 (1.65–9.97)

50% Low

 

2.46 ± 0.07 (1.98–2.97)

2.53 ± 0.10 (2.19–3.47)

4.15 ± 0.24 (2.65–6.17)

4.78 ± 0.31 (3.18–7.45)