八ケ岳における, ホンドホタルブクロ, およびコガネギクの垂直的変異
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概要
- 論文の詳細を見る
Some analyses were made on the variation of the stem-height, and the dry-weight of the whole and those of the flowers, leaves, stems, roots and overground parts in two species of plants, Campanula hondoensis and Solidago virgaurea subsp. leiocarpa. The specimens were collected at every 100 m of altitude along the line attending from the Okoya Ridge to the Kengai Ridge of Mt. Yatsugatake. 1) In both species, the size and the weight of the body decreased with the increase of altitude of the station. 2) The relative weights of the overground parts, flowers and stems against the whole decreased, and that of the root increased, but that of the leaves was constant with the increase of altitude in both species. 3) The relation of the dry-weights of the whole and the stem-heights at every altitude conform to the equation, w=kf^α where w is the mean weight or mean stem-height, and f is the altitude. 4) Double logarithmic plots of the overground part weights against the root-weights at every altitude form the straight line. Therefore the relation of the two parts along the altitude conform to the allometry formula, y=bxα where y is overground part weight, and x is the root-weight. As α>1.0 was shown, the altitudinal variation of the overground part was larger than that of the root. In Solidago virgaurea subsp. leiocarpa, the relation of two parts shows diphasic allometries with the critical point at the forest line (alt. 2500m). As the value of α above the forest line was larger, the cline of the variation of the overground part above the forest line was larger. 5) The relation of each part of the overground parts along the altitude conform to the allometry formula, too. In this case, the discontinuity at the forest line was not shown.
- 日本生態学会の論文
- 1964-02-01