|| 要旨トップ | 目次 |||日本生態学会第63回全国大会 (2016年3月、仙台) 講演要旨
一般講演（ポスター発表） P2-032 (Poster presentation)
We analyzed the distribution of lianas in 1-ha plot of an old-growth stand in Tomakomai Experimental Forest (TOEF), Hokkaido. We checked if lianas favor any specific tree properties, such as diameter at breast height (DBH), tree height and crown exposure (CE), while choosing a host tree. If so, are the favorite tree properties same for two main lianas species found in TOEF? 41% of all tree individuals (DBH≥5 cm) were occupied by lianas in 1-ha plot. The most abundant species were Actinidia arguta, which occupied 18% of all trees, and Hydrangea petiolaris which occupied 24% of all trees. We found negative relationship between DBH and tree height and the presence of Actinidia, while we found a positive relationship between these tree properties and the presence of Hydrangea. The presence of both liana species was positively related to crown exposure but the effect of CE was more pronounced for Actinidia. Our results showed that there are some interspecific difference in choosing a host. Actinidia prefers disturbed areas so DBH and tree height is not a primary factor responsible for its distribution on host. On the other hand, Hydrangea usually does not climb up to the tree top so CE has less impact on its host preference.