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. Author manuscript; available in PMC: 2011 Apr 18.
Published in final edited form as: Trees (Berl West). 2009 Jun;23(3):623–635. doi: 10.1007/s00468-008-0307-7

Table 5.

Parameters of the Gompertz function for xylem cell dynamic (see Fig. 3) and R2 of the model (A = upper asymptote; Ip = inflection point; κ = rate of change parameter; mean values ± standard deviation).

Site Year A
(n cells)		 Ip
(day of the year)		 κ R2
Timberline 2006 47 ± 1.0 176 ± 1.3 0.057 ± 0.006 0.976
2007 67 ± 2.3 174 ± 2.3 0.022 ± 0.002 0.995
Treeline 2006 53 ± 0.7 172 ± 0.9 0.050 ± 0.003 0.989
2007 66 ± 2.2 157 ± 2.2 0.031 ± 0.003 0.986
Krummholz 2006 76 ± 2.5 178 ± 2.0 0.043 ± 0.005 0.986
2007 92 ± 3.4 168 ±2.7 0.026 ± 0.003 0.995