著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) D. M. Sigman and M. A. Altabet and D. C. McCorkle and R. Francois and G. Fischer,The δ15N of nitrate in the southern ocean: Consumption of nitrate in surface waters,Global Biogeochemical Cycles,0886-6236,American Geophysical Union (AGU),1999-12,13,4,1149-1166,https://cir.nii.ac.jp/crid/1361418521237353984,https://doi.org/10.1029/1999gb900038