AUTHORS’ CONTRIBUTIONS
Morrison and Woldemariam conceived of and designed the study. Morrison was responsible for all field work and field data analysis; Woldemariam was responsible for all laboratory work and analysis of all metabolomic data. Morrison outlined the manuscript, was lead author on the Abstract, Introduction, the field data Methods and Results, and the Discussion. Woldemariam was lead author on the metabolomics Methods and Results. Both authors edited the entire manuscript and gave final approval for publication.