sourcesdemo {SIBER}

A set of isotope observations on food sources of brent geese

Description

A dataset of isotope observations on 4 food sources of brent geese comprising their mean and standard deviations. Intended for use in a Stable Isotope Mixing Model.

Usage

data(sourcesdemo)

Format

A 5 column, 4 row data.frame object containing 4 different plants and their measurements on 2 different isotopes. The first column Sources is a factor determining the name of the source. The second and third columns are the mean d13C and mean d15N values for each source respectively. Columns 3 and 5 are the standard deviations of the d13C and d15N values respectively. Note that the order of the isotope data has been swapped since siar in order to present d13C as the first isotope and hence on the x-axis by default.

Author(s)

Rich Inger