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Ecological Processes
Fig. 4 | Ecological Processes

Fig. 4

From: A global meta-analysis of woody plant responses to elevated CO2: implications on biomass, growth, leaf N content, photosynthesis and water relations

Fig. 4

Percentage change (± 95% CI) in biomass (a–c) and leaf N (d) of woody plants over different duration (years) of exposure to eCO2. The whiskers denote 95% CI and the circles denote mean percentage change (MPC) between aCO2 and eCO2. The numbers above the major ticks of the X-axis denote number of observations. The area fill ( ) shows the trends and the magnitude of differences between the different duration of exposure to eCO2. The wider the area the bigger the difference between MPCs. Key to duration of exposure: 0.5 years denotes half of a year (6 months). There were no observations reported for a period > 2–3 years except for leaf N

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