Box 1 Figure.
Physiological and growth responses of glacial and modern Juniperus spp. and Agathis spp. A, Juniperus spp. ci/ca. B, Agathis spp. ci/ca. C, Juniperus spp. ci. D, Agathis spp. ci. Data are shown as group means with error bars representing 1 sd. Letters above the error bars represent significance, with different letters indicating P < 0.0003. Juniperus spp. data in A and C are reproduced in summary from Gerhart et al. (2012). Glacial Agathis spp. were excavated from peat bogs surrounding Lake Ngatu near Awanui in Northland (n = 8) and 14C dated from 52.2 thousand years ago to more than 52.8 thousand years ago. Modern Agathis spp. were obtained from remnants of old buildings and piers throughout the Awanui region (n = 8). Consequently, modern specimens ranged in age from 0.9 to 3.7 kyr BP.