Altitude-related shift of relative abundance from insect to sunbird pollination in <i>Elaeagnus umbellata</i> (Elaeagnaceae)

Hua-Qiang Pi, Qiu-Mei Quan, Bo Wu, Xiao-Wen Lv, Li-Min Shen, and Shuang-Quan Huang

Journal of Systematics and Evolution . 2021, (6): 1266 -1275 . DOI: 10.1111/jse.12685