Fig. 3: Isoprene processes and their main drivers. | Communications Earth & Environment

Fig. 3: Isoprene processes and their main drivers.

From: Substantial loss of isoprene in the surface ocean due to chemical and biological consumption

Fig. 3

a Rate constant of isoprene loss in dark incubations (kloss, considered to be microbial and chemical consumption) vs. chlorophyll-a concentration. The linear regression equation is kloss = 0.10 × [chla] + 0.05 (R2 = 0.96, p = 10−7, n = 11). The standard error of the slope is 0.01 L mg−1 d−1, and the standard error of the intercept is 0.01 d−1. Error bars represent the experimentally determined standard error of kloss. The colour scale of the circles indicates bacterial abundances. b Specific (chla-normalised) rate of isoprene production vs seawater temperature (SST) across the sample series. The dashed line is the general smoothed trend. The blue line is the exponential adjustment at SST <23 °C: isoprene sp.prod. = 2.04 ×  e(0.13·SST) + 0.71 (R2 = 0.85, p = 10−3, n = 8).

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