Distance- and density-dependent seedling mortality caused by several diseases in eight tree species co-occurring in a temperate forest

Miki Yamazaki, Susumu Iwamoto, Kenji Seiwa

研究成果: Chapter

10 被引用数 (Scopus)

抄録

To examine whether the Janzen-Connell mechanism applies to temperate forests, seedling survival and causes of mortality were investigated at two distances (beneath, far) from conspecific adults and at two densities (high, low) at each distance for seedlings (n = 7935) of eight tree species co-occurring in a hardwood forest. Six of the eight species showed distance-and/or density-dependent seedling mortality mainly caused by diseases and rodents. In four of the five species primarily killed by disease (i.e. damping-off, blight, rot, powdery mildew), the infectivity (probability of infection by the disease) and/or the virulence (proportion of seedlings killed to those infected by the disease) were higher beneath than far from conspecific adults. These findings suggest that host specificity and/or spatially heterogeneous activity of natural enemies play an important role in the reciprocal replacement of tree species, maintaining species diversity in temperate forests.

本文言語English
ホスト出版物のタイトルForest Ecology
ホスト出版物のサブタイトルRecent Advances in Plant Ecology
出版社Springer Netherlands
ページ181-196
ページ数16
ISBN(印刷版)9789048127948
DOI
出版ステータスPublished - 2009 12 1

ASJC Scopus subject areas

  • 農業および生物科学(全般)

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