南米チリ亜南極地域の蘚類フロラについて

概要

論文の詳細を見る
During Dec. 16, 1978-Jan. 12, 1979, one of the authors (H. Kanda), had an opportunity to collect bryophytes in Chile on his way to the Chilean Antarctic Station, Presidente Frei as an exchange scientist under the provisions of the Antarctic Treaty. His collections were made in Petrohue and several places of Brunswick Peninsula. The present article deals with the moss floras of Petrohue, which belongs to the temperate evergreen rain forest region, and of Brunswick Peninsula, which belongs to the subantarctic summer-green broad-leaved forest region, based on 429 specimens of both regions. From Petrohue 24 families with 72 species, from Brunswick Peninsula, 21 families with 70 species, were recognized. A comparison of the distributional patterns among the moss floras of Petrohue, Brunswick Peninsula and Prov. Aisen (Seki, 1974) reveals a slight decrease in the endemic species and remarkable increase of the bipolar and circumsubantarctic species in Brunswick peninsula. These facts support the major floristic boundary at 47°S proposed by Seki (1973). The association coefficients obtained by the formula of Ochiai (1957) among these three floras are as follows : Petrohue-Aisen: 0.48, Aisen-Brunswick: 0.50 and Petrohue-Brunswick: 0.24.
日本蘚苔類学会の論文
1981-10-31