| foliar delta(13)c and delta(18)o reveal differential physiological responses of canopy foliage to pre-planting weed control in a young spotted gum (corymbia citriodora subsp. variegata) plantation. | weed control may improve the growth of forest plantations by influencing soil water and nutrient availability, but our knowledge of leaf-level physiological responses to weed control at different within-canopy positions is limited for tropical and subtropical plantations. foliar carbon (delta(13)c) and oxygen (delta(18)o) isotope compositions, gas exchange, and nitrogen (n(mass)) and phosphorus (p(mass)) concentrations at four canopy positions were assessed in a young spotted gum (corymbia citri ... | 2008 | 18708335 |