title: Introduction to a Virtual Special Issue: probing the carbon cycle with (13)C.
authors.affiliation: Environment Section Editor.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Norby
mesh_terms: D018533:Biomass; D002244:Carbon / Q000378:metabolism*; D002247:Carbon Isotopes; D017753:Ecosystem; D020407:Internet; D010788:Photosynthesis; D018515:Plant Leaves / Q000378:metabolism; D018517:Plant Roots / Q000378:metabolism; D011643:Publishing; D012987:Soil
chemical_list: D002247:Carbon Isotopes; D012987:Soil; D002244:Carbon