species 
Name of the species

unitless 
species 
sample_number 
Sample identification number

unitless 
sample 
date_analyzed 
Date on which AACSIA analysis of corresponding sample was begun; formatted as yyyymmdd

unitless 
date 
Alanine_Avg 
mean d15N value of Alanine

parts per thousand (per mil, ‰) 
d15N_bio 
Alanine_SD 
standard deviation of d15N values of Alanine

parts per thousand (per mil, ‰) 
std_dev 
Glycine_Avg 
mean d15N value of Glycine

parts per thousand (per mil, ‰) 
d15N_bio 
Glycine_SD 
standard deviation of d15N values of Glycine

parts per thousand (per mil, ‰) 
std_dev 
Threonine_Avg 
mean d15N value of Threonine

parts per thousand (per mil, ‰) 
d15N_bio 
Threonine_SD 
standard deviation of d15N values of Threonine

parts per thousand (per mil, ‰) 
std_dev 
Serine_Avg 
mean d15N value of Serine

parts per thousand (per mil, ‰) 
d15N_bio 
Serine_SD 
standard deviation of d15N values of Serine

parts per thousand (per mil, ‰) 
std_dev 
Valine_Avg 
mean d15N value of Valine

parts per thousand (per mil, ‰) 
d15N_bio 
Valine_SD 
standard deviation of d15N values of Valine

parts per thousand (per mil, ‰) 
std_dev 
Leucine_Avg 
mean d15N value of Leucine

parts per thousand (per mil, ‰) 
d15N_bio 
Leucine_SD 
standard deviation of d15N values of Leucine

parts per thousand (per mil, ‰) 
std_dev 
Isoleucine_Avg 
mean d15N value of Isoleucine

parts per thousand (per mil, ‰) 
d15N_bio 
Isoleucine_SD 
standard deviation of d15N values of Isoleucine

parts per thousand (per mil, ‰) 
std_dev 
Proline_Avg 
mean d15N value of Proline

parts per thousand (per mil, ‰) 
d15N_bio 
Proline_SD 
standard deviation of d15N values of Proline

parts per thousand (per mil, ‰) 
std_dev 
AsparticAcid_Avg 
mean d15N value of Aspartic Acid

parts per thousand (per mil, ‰) 
d15N_bio 
AsparticAcid_SD 
standard deviation of d15N values of Aspartic Acid

parts per thousand (per mil, ‰) 
std_dev 
Methionine_Avg 
mean d15N value of Methionine

parts per thousand (per mil, ‰) 
d15N_bio 
Methionine_SD 
standard deviation of d15N values of Methionine

parts per thousand (per mil, ‰) 
std_dev 
GlutamicAcid_Avg 
mean d15N value of Glutamic Acid

parts per thousand (per mil, ‰) 
d15N_bio 
GlutamicAcid_SD 
standard deviation of d15N values of Glutamic Acid

parts per thousand (per mil, ‰) 
std_dev 
Phenylalanine_Avg 
mean d15N value of Phenylalanine

parts per thousand (per mil, ‰) 
d15N_bio 
Phenylalanine_SD 
standard deviation of d15N values of Phenylalanine

parts per thousand (per mil, ‰) 
std_dev 
Tyrosine_Avg 
mean d15N value of Tyrosine

parts per thousand (per mil, ‰) 
d15N_bio 
Tyrosine_SD 
standard deviation of d15N values of Tyrosine

parts per thousand (per mil, ‰) 
std_dev 
Lysine_Avg 
mean d15N value of Lysine

parts per thousand (per mil, ‰) 
d15N_bio 
Lysine_SD 
standard deviation of d15N values of Lycine

parts per thousand (per mil, ‰) 
std_dev 
Arginine_Avg 
mean d15N value of Arginine

parts per thousand (per mil, ‰) 
d15N_bio 
Arginine_SD 
standard deviation of d15N values of Arginine

parts per thousand (per mil, ‰) 
std_dev 
Histidine_Avg 
mean d15N value of Histidine

parts per thousand (per mil, ‰) 
d15N_bio 
Histidine_SD 
standard deviation of d15N values of Histidine

parts per thousand (per mil, ‰) 
std_dev 