title: Assessing environmental changes in grasslands.
authors.forename: Jesse H
authors.initials: JH
authors.lastname: Ausubel
authors.forename: Paul E
authors.initials: PE
authors.lastname: Waggoner
mesh_terms: D001272:Atmosphere; D002140:California; D002245:Carbon Dioxide; D002980:Climate; D017753:Ecosystem; D005308:Fertilizers; D009584:Nitrogen; D006109:Poaceae / Q000254:growth & development*; D012987:Soil
chemical_list: D005308:Fertilizers; D012987:Soil; D002245:Carbon Dioxide; D009584:Nitrogen