Stump colonization byArmillaria luteobubalinaand other wood decay fungi in an age series of cut‐over stumps in karri (Eucalyptus diversicolor) regrowth forests in south‐western Australia

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Abstract
Summary: As part of a study of interactions betweenArmillaria luteobubalinaWatling and Kile and other wood decay fungi, we conducted a three‐year floristic survey of fungal colonization of 150 eucalypt stumps (left after clearfelling of mature forest) in a series of karri (Eucalyptus diversicolorF. Muell.) regrowth stands of different ages. Certain fungi showed preferences for different eucalypt species or parts of stumps in their choice of food base. A successional trend of fungal species was evident in the age series of stumps (0–16 yr after logging). There was no significant relationship between the absence ofA. luteobubalinaand the presence of other fungal species on stumps, but there was a significant correlation between the percent stump base colonized byA. luteobubalinaand presence of other fungi, indicating some degree of natural suppression ofA. luteobubalina.More than 80 wood decay fungi were observed on stumps, some of which are cosmopolitan, such asCoriolus versicolor(L. ex Fr.) Quel. andStereum hirsutum(Wild, ex Fr.) S.F. Gray, but a number of which are yet undescribed.