. Bonner zoologische Monographien. Zoology. JAHN, BIRD COMMUNITIES OF THE ECUADORIAN CHOCO SP 'S es E eg WD eg u QJ 50 i 40 30 20 - 10 - 0 ? OC: trees ? ysF: palms 0 OC: palms ? ysF: trees ? magF: trees Z magF: palms. MNT1 MNT2 FIG. 15. Average maximum height of the tallest trees (MNT1: n = 311; MNT2: n = 421) and palms (MNT1: n = 54; MNT2: n = 109) with a DBH >10 cm in the seven 25 x 25-m plots per main habitat type and transect; with standard deviation. Abbreviations used: see Table 6. Note: statistical tests described in the text and summarized in Table 7 refer to the combined number of
. Bonner zoologische Monographien. Zoology. JAHN, BIRD COMMUNITIES OF THE ECUADORIAN CHOCO SP 'S es E eg WD eg u QJ 50 i 40 30 20 - 10 - 0 ? OC: trees ? ysF: palms 0 OC: palms ? ysF: trees ? magF: trees Z magF: palms. MNT1 MNT2 FIG. 15. Average maximum height of the tallest trees (MNT1: n = 311; MNT2: n = 421) and palms (MNT1: n = 54; MNT2: n = 109) with a DBH >10 cm in the seven 25 x 25-m plots per main habitat type and transect; with standard deviation. Abbreviations used: see Table 6. Note: statistical tests described in the text and summarized in Table 7 refer to the combined number of trees and palms per habitat type and transect. within the transects nor between them. The analysis also showed that the open-country samples of both transects were different when compared with any of the other habitat samples, but not with each other (Table 7). Regarding the tallest trees per study plot, the dicots were always taller than the monocots. In gen- eral, the average maximum height of palms was considerably lower than that of trees (Fig. 15). For MNT1 the average maximum height of trees and palms gradually increased from open country over young successional to medium-age forest. By contrast, the mean maximum height of palms was equal in the young forest and medium-age forest of MNT2, and even the trees were only slightly taller in the latter habitat. On average, the samples of MNT2 had greater maximum heights than those of the corresponding habitats of MNT1, for trees as well as palms. Not surprisingly, sample means in the be- tween-transect analyses differed in an ANOVA (F1;40 = , P = , n = 21). In the between-habitat comparison, the differ- ence in sample means was highly significant (ANOVA: F5i36 = , P < , n = 7). However, the post hoc analysis demonstrated that the young succes- sional forest of MNT2 differed only from the open- country samples and the same habitat type of MNT1 differed only from the medium-age forest of MNT2 (Tukey HSD, P
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