Ecological Archives E086-004-A1

R. Matthew Landis and David R. Peart. 2005. Early performance predicts canopy attainment across life histories in subalpine forest trees. Ecology 86:63–72.

Appendix A. Characteristics of sample trees used in a comparison of early growth rates between canopy trees and saplings at Mt. Moosilauke, New Hampshire, USA.

Species

Mountain birch
Betula cordifolia Regel.

Balsam fir
Abies balsamea (L.) Mill.

Red spruce
Picea rubens Sarg.

Size class

1 cm dbh

1–5 cm dbh

15–30 cm dbh

£ 1 cm dbh

1–5 cm dbh

15–30 cm dbh

£ 1 cm dbh

1–5 cm dbh

15–30 cm dbh

Diameter (cm)

1.0 ± 0.3
(0.43–1.5)

5.0 ± 1.3
(2.4–7.4)

19 ± 4.1
(15–28)

2.1 ± 0.7
(0.98–4.0)

4.2 ± 1.1
(2.1–6.7)

19 ± 3.3
(15–30)

1.9 ± 0.3
(1.0–3.4)

4.1 ± 0.9
(2.5–5.8)

23 ± 4.9
(15–30)

Height (m)

1.1 ± 0.36
(0.75–1.9)

5.6 ± 1.8
(2.5–8.6)

--

1.3 ± 0.33
(0.76–2.1)

3.2 ± 1.1
(1.7–5.8)

--

1.1 ± 0.24
(0.75–1.8)

2.8 ± 0.9
(1.9–5.5)

--

Age at core height (yr)

9 ± 4.8
(4–26)

32 ± 8.9
(14–45)

80 ± 36
(40–164)

28 ± 13.1
(9–54)

41 ± 7.7
(19–55)

81 ± 22
(44–121)

33 ± 10
(13–60)

46 ± 8.3
(30–69)

123 ± 41
(49–208)

   Notes: For juveniles (< 5 cm diameter at breast height; dbh), age and diameter were assessed at 5 cm above the ground. For canopy trees (15–30 cm dbh), age was assessed at 50 cm above ground and diameter at 1.4 m above ground. Height was not measured for this size class. Values are means ± 1 standard deviation. Values in parentheses indicate minima and maxima.



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