title: Geochemistry. Unsuspected underground nitrates pose a puzzle for desert ecology.
authors: Erik
authors: E
authors: Stokstad
mesh_terms: D002712:Chlorides / Q000032:analysis / Q000378:metabolism; D003889:Desert Climate; D017753:Ecosystem; D009566:Nitrates / Q000032:analysis* / Q000378:metabolism; D010944:Plants / Q000378:metabolism; D012987:Soil / Q000032:analysis*; D015206:Southwestern United States; D014867:Water / Q000737:chemistry
chemical_list: D002712:Chlorides; D009566:Nitrates; D012987:Soil; D014867:Water