富士山亜高山帯針葉樹林における林分組成の違いと樹幹着生蘚苔類の分布様式

概要

論文の詳細を見る
To compare the species composition of bryophytes epiphytic on various host tree species, we obtained samples from Tsuga diverszfolia, Abies veitchii and Larix kaempferi growing on ridges on the north and south slopes of the subalpine coniferous zone on Mt. Fuji, Yamanashi and Shizuoka prefectures. A total of 7 moss taxa and 14 liverwort taxa were recognized. The total number of epiphytic bryophyte species on the trunks of T.diversifolia was greater than that on the trunks of A. veitchii, corresponding to the bark form. Although the bark of L. kaempferi was similar to that of T. diversifolia, the total number of epiphytic bryophyte species on the trunks of the former was lower than that on the latter. The number of epiphytic bryophyte species on the trunks of a single tree species also varied with the forest type of which the tree species was a part. In pure forest dominated by only evergreen coniferous trees such as T. diversifolia and A. veitchii, or only deciduous trees such as L. kaempferi and other broad-leaved trees, the number of epiphytic bryophyte species was low. Conversely, in mixed forest containing both evergreen coniferous and deciduous tree species, the number of epiphytic bryophyte species was higher than in pure forest. We conclude that the variations in environmental conditions around tree trunks in mixed forest are more suited to the growth of epiphytic bryophytes in comparison with pure forest.
日本蘚苔類学会の論文