中国石蕊属地衣的垂直分布规律(英文)

基于标本馆馆藏标本的信息,研究了中国石蕊属Cladonia地衣及其18个种的垂直分布规律,并确认了本属倾向于分布在高海拔地区的特点。物种随海拔梯度的变化在统计学上呈正态分布或偏正态分布是非常普遍的现象,但是它们的分布规律与其所处的海拔位置相关:物种分布范围随着海拔的增加而缩小。因此,全球变暖会对高海拔地区的物种构成更直接的威胁。粉杆石蕊C.bacillaris和瘦柄红石蕊C.macilenta具有相同的海拔分布规律和分布范围,从生态学的角度支持了它们为同种的观点。

Altitudinal patterns of the lichen genus Cladonia (Lichenized Ascomycota) in China

Altitudinal patterns of the lichen genus Cladonia and 18 species in the genus were investigated based on herbarium collections. Species in the genus are inclined to grow at high elevation. Normal and lognormal probability patterns are ubiquitous for vertical distribution of these species, and vertical patterns are somewhat elevation-dependent. The altitudinal ranges of the species were found to decrease with increase of altitude. These evidences suggest an immediate threat from global warming to some species growing at higher elevation in the genus. Ecological evidence also confirms C. bacillaris and C. macilenta are conspecific.