Successional changes of forest vegetation during 14 years since the 1977 eruption of Mt. Usu [Japan]: Especially on response patterns of tall trees

Forest vegetation was severely disturbed by the 1977 eruption of Mt. Usu in Hokkaido. However, most of the intermediately disturbed sites were immediately reforested by decurrentgrowth species(e. g., Acer mono)which survived through the eruption and then grew rapidly. The decurrent-growth species al...

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Bibliographic Details
Published inJAPANESE JOURNAL OF ECOLOGY Vol. 43; no. 1; pp. 1 - 11
Main Author Fujimoto, S. (Hokkaido Univ., Sapporo (Japan). Faculty of Agriculture)
Format Journal Article
LanguageJapanese
Published The Ecological Society of Japan 10.04.1993
Subjects
ARBOLES FORESTALES
ARBRE FORESTIER
BOSQUE ALTO
Disturbance
ECOLOGICAL SUCCESSION
Eruption
FOREST TREES
FUTAIE
HIGH FOREST
JAPAN
JAPON
REGENERACION VEGETAL
RESTAURATION COUVERTURE VEGETALE
REVEGETATION
Stress tolerant
SUCCESSION ECOLOGIQUE
Successional change
SUCESION ECOLOGICA
Tree architecture
VOLCANIC AREAS
ZONAS VOLCANICAS
ZONE VOLCANIQUE
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Summary:Forest vegetation was severely disturbed by the 1977 eruption of Mt. Usu in Hokkaido. However, most of the intermediately disturbed sites were immediately reforested by decurrentgrowth species(e. g., Acer mono)which survived through the eruption and then grew rapidly. The decurrent-growth species also established their seedlings there to some extent. These responses could be regarded as competitive ones because intermediately disturbed sites are characterized by severe competition. In general, the shade intolerant excurrent-growth species(e. g., Populus maximowiczii)did not invade these sites even though they were severely damaged at the time of the eruption. Unexpectedly, they responded to a few intermediately disturbed sites which they had occupied before the eruption and therefore were damaged severely. Consequently, they reoccupied these sites immediately. They also invaded a few strongly disturbed sites caused by severe volcanic impacts. However, the growth activity was extremely low in these sites ; therefore, the reforestation scarcely progressed. Because such an unharried response could correspond rather to stress tolerant behavior, it was suggested that early successional excurrent-growth species exhibited not noly early succession but also stress tolerant behavior collectively. Their wide-spread distribution was concluded to be due to two such aspects of behavior.
Bibliography:K10
K70
K01
9504545
ISSN:0021-5007
2424-127X
DOI:10.18960/seitai.43.1_1