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Table 2 Descriptive statistics of raw crossdated ring width series for the study species in each site; t-value BP: t-value Baillie Pilcher, GLK: Gleichläufigkeitskoeffizient

From: Climate forcing of tree growth in dry Afromontane forest fragments of Northern Ethiopia: evidence from multi-species responses

Variables Mean statistical attributes (or ranges)
Hugumburda Desa’a
J. procera O. europaea P. falcatus J. procera O. europaea
No. of trees sampled 38 10 20 36 14
No. of dated series 33 10 18 32 13
Average diameter (cm) (range) 20 (12–42) 13 (10–19) 21 (11–39) 23 (14–50) 22 (16–35)
Average age (years) (range) 43 (23–65) 36 (28–46) 35 (20–54) 54 (32–112) 76 (48–129)
Time span (years) 1949–2016 1969–2015 1963–2016 1905–2016 1888–2016
Average ring width (mm) (SD) 2.31 (0.54) 2.01 (0.36) 2.50 (0.58) 1.83 (0.57) 1.61 (0.20)
Average correlation with master 0.51 0.54 0.54 0.57 0.55
1st order autocorrelation (unfiltered) 0.04 0.11 0.11 0.20 0.14
Average mean sensitivity 0.63 0.52 0.52 0.55 0.43
Standard deviation (filtered) 0.64 0.66 0.66 0.64 0.59
Flagged segments (%) 4.11 10 5.71 1.74 0.0
t-value BP (SD) 5.64 (1.33) 7.62 (1.27) 6.87 (2.0) 7.7 (3.0) 10.8 (3.61)
GLK (SD, %) 95.5 (3.26) 98.3 (1.95) 94 (5.46) 93.7 (3.42) 94.1 (3.23)