筑波山の森林内における蘚苔類の種多様性と基物および生育形との関係

概要

論文の詳細を見る
The distribution of bryophytes was investigated in 27 stands in the forests of Mt. Tsukuba, Central Japan, and the relationship between substrate, growth-form and bryophyte species diversity was analyzed. Rocks are an excellent stable substrate for bryophytes in the established forests, and provide a diversity of environments compared to the trunks of standing trees, fallen tree trunks, or the soil. Many species of bryophytes were found to grow on rocks in the forest. Many species with a repent or mat-forming growth habit were found growing in the different forest strata compared to the erect and suberect growth forms. The smooth mat form and loose mat form are especially important growth-forms of many species of bryophytes in the forest. The substrate categories- on rock and tree trunks or on rocks- and the growth type-smooth mat form and loose mat form were significant factors in the analysis of plots. We conclude that the presence of rock substrates on which the many species of bryophytes can grow has brought about an increase in the bryophyte species diversity in the forests. In addition, there is a predominance of repent forms of bryophyte on each substrate leading to an increase in bryophyte species diversity.