Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Relationships of Δ13C and δ18O with integrated stomatal conductance over the whole period of the experiment (gw). Solid symbols represent well-watered conditions (WW), while open symbols represent the water deficit level (WD). Triangles represent eCO2 (elevated [CO2]) while circles represent aCO2 (ambient [CO2]). Regression lines are shown only when significant and they are fitted for either WD (dashed line) or WW (solid line) with pooled data from both growth [CO2] levels.
