Figure 2

Short-term flooding: Mean values averaging over 5 minutes during day time (Day time averages) for assimilation (A) in μmol m^-2 s^-1, transpiration (Tr) in mmol m^-2 s^-1, stomatal conductance (gs) in mm s^-1 ± SD and Standard Emissions of isoprene in μg g^-1 h^-1 ± SD. Data are derived from one individual each of Laetia corymbulosa (dark grey) (n =74-144 per day) and Salix martiana (light grey) (n = 30-144 per day) from várzea with average light conditions during the experiment of 185 ± 36 and 216 ± 39 μmol m^-2 s^-1 for L. corymbulosa and S. martiana, respectively. The significance of the differences between nonflooded (nf) and 1, 2, 3 and 4 days flooded (df) were tested with ANOVA and Tukey Test; * = P-value < 0.01 F ratio is significant, ** =,P-value < 0.001 F ratio is very significant, *** = P-value < 0.0001 F ratio is highly significant. These data were derived from an unpublished data set obtained with these Amazonian tree species in the year 2000 at the University of Oldenburg. Data upon the release of the fermentation products gained within these studies were published elsewhere (Rottenberger et al.[2008]).