Abstract
Responses of plants to the length of the growing season were studied in an alpine snow-bed by setting five plots along a snow-melting gradient. Performance and phenology were compared between the plots for five herbaceous species (Peucedanum multivittatum, Primula cuneifolia, Veronica stelleri var.longistyla, Solidago virga-aurea var.leiocarpa andPotentilla matsumurae). Performance characteristics measured were flower height, leaf height, leaf number, flower number and fruit number. In the late exposed plots with short snow-free periods, fruit-set was reduced in many species due to the decrease in flower number and/or the short growing season for fruit development.Veronica stelleri var.longistyla andSolidago virga-aurea var.leiocarpa, which decreased in flower and leaf numbers due to the short snow-free period, were sensitive to the short growing season.Peucedanum multivittatum was vigorous in the late exposed plots, but its slow flowering and fruiting prevented the fruit-set from developing in the last exposed plot.Primula cumeifolia andPotentilla matsumurae, quick flowering species that maintained their flower number throught the snow-melting gradient, were considered the most successful species in late exposed habitats.
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Kudo, G. Performance and phenology of alpine herbs along a snow-melting gradient. Ecol. Res. 7, 297–304 (1992). https://doi.org/10.1007/BF02347098
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DOI: https://doi.org/10.1007/BF02347098