Ecological Research

, Volume 12, Issue 3, pp 337–343 | Cite as

Mature tree effect ofAcer mono on seedling mortality due to insect herbivory

  • Kaoru Maetô
  • Kenji Fukuyama
Article

Abstract

Mature tree effects on the mortality and herbivory of current-year seedlings were investigated in a common subcanopy species,Acer mono Maxim., in a cool temperature mixed forest. The mortality of natural seeldings under the canopy withA. mono layers was greater than that under the canopy without them. Also, the mortality of seedlings in planters located under the crown of anA. mono tree was at least 1.8 times greater than that of those in planters about 5 m away from the crown edge.Pyrrhalta fuscipennis (Coleoptera: Chrysomelidae) and other specialist insects, having probably dropped fromA. mono crowns, were more frequently observed in planters underA. mono crowns than in those far the crowns. Leaf area loss due to specialist herbivores was probably the main cause of increase in the mortality ofA. mono seedlings close to conspecific adults. It is implied that seedling predation by specialist herbivores coming from parent trees is a substantial factor promoting local seed dispersal ofA. mono.

Key words

Acer mono distance-dependent mortality Pyrrhalta seed dispersal seedling predation 

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Copyright information

© Ecological Society of Japan 1997

Authors and Affiliations

  • Kaoru Maetô
    • 1
  • Kenji Fukuyama
    • 2
  1. 1.Shikoku Research CenterForestry and Forest Products Research InstituteKochiJapan
  2. 2.Hokkaido Research CenterForestry and Forest Products Research InstituteToyohira, SapporoJapan

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