How flowering time relates to snowmelt date

Data from a study of how time from snowmelt to flowering relates to snowmelt date and elevation (Wheeler et al 2016) in Salix herbacea, based on about 120 plots on each of three mountains in the Swiss Alps.

Usage

data(snowmelt)

Format

A dataframe containing:

id: Plot patch ID
flow: Number of days from snowmelt day to flowering
snow: Snowmelt day of year
sex: Sex of patch, corrected across years, NA - no flowering, 0 - male, 1 - female
elev: Elevation (from dGPS)

References

Wheeler, J. A., Cortés, A. J., Sedlacek, J., Karrenberg, S., van Kleunen, M., Wipf, S., Hoch G., Bossdorf, O. & Rixen C. (2016) The snow and the willows: earlier spring snowmelt reduces performance in the low-lying alpine shrub Salix herbacea. Journal of Ecology 104, 1041-50.

Examples

data(snowmelt)
plot(flow~snow,data=snowmelt, log="y")
#> Warning: 1 y value <= 0 omitted from logarithmic plot