Nomenclature of the used symbols in this main text. Keisuke Inomura Jason Bragg Lasse Riemann Michael J. Follows 10.1371/journal.pone.0208282.t001 https://plos.figshare.com/articles/dataset/Nomenclature_of_the_used_symbols_in_this_main_text_/7402256 <p>They are listed roughly in the order of appearance.</p> 2018-11-29 19:01:56 ambient oxygen concentration organism respires carbohydrate nitrogen fixation heterotrophic nitrogen fixer Azotobacter vinelandii ammonium Nitrogen fixation model