. Bonner zoologische Monographien. Zoology. IAI IN, BIRD COMMUNII'IKS (>!⢠I I II' ECUADORIAN CI IOCO The diameter at breast height (DBH). - For all habitats, the proportion of trees and palms declined rapidly with increasing DBH class (Figs. 13a and 13b), widi most stems in the smallest category ( cm). There was no difference between the plot means for MNT1 and MNT2 in a one-way ANOVA. However, the difference in sample means was highly significant in the between-habitat analyses (ANOVA: F536 = , P < , n = 7). Particularly, the early stage forest of MNT1 had relative
. Bonner zoologische Monographien. Zoology. IAI IN, BIRD COMMUNII'IKS (>!⢠I I II' ECUADORIAN CI IOCO The diameter at breast height (DBH). - For all habitats, the proportion of trees and palms declined rapidly with increasing DBH class (Figs. 13a and 13b), widi most stems in the smallest category ( cm). There was no difference between the plot means for MNT1 and MNT2 in a one-way ANOVA. However, the difference in sample means was highly significant in the between-habitat analyses (ANOVA: F536 = , P < , n = 7). Particularly, the early stage forest of MNT1 had relatively fewer stems in the first two DBH classes ( cm), but more trees in the diameter range cm than the medium-age forest of the same transect, while in the case of MNT2, relatively more individuals fell in the first three DBH classes ( cm) than the medium-age forest (Figs. 13a and 13b). Thus, re- garding the habitat feature 'DBH', at least some of the MNT1 samples categorized here as young forest were, in fact, in a rather advanced stage of early succession. Consequently, in the pair-wise comparisons of the habitats, the differences in DBH plot means for young forest of MNTl and MNT2 were signi- ficant (Tukey HSD, P = ; Table 7). In com- parisons between unequal habitat pairs, the young successional forest of MNTl was not different from the medium-age forest of both transects. On the other hand, the young successional forest of MNT2 did not differ from the open-country samples of both transects. The height of trees and palms. - In forest, the proportion of trees and palms per height class showed a positively skewed distribution, whereas this pattern has not yet evolved in open-country samples (Figs. 14a and 14b). For both transects and all habitat samples, the percentage of individuals was greatest in the height class m. As for the previous habitat feature, the plot means of MNTl and MNT2 did not differ in a one-way ANOVA, while the dif
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