Figure 4
From: Nitrogen fixation and transfer in open ocean diatom–cyanobacterial symbioses
Summary of results from nanoSIMS analysis. (a) The atom % of the 15N/14N ratios for ROIs of individual Hemiaulus–Richelia are shown as a function of incubation time in both long and short-term experiments. (b) The atom % of the 15N/14N ratios for ROIs of individual Hemiaulus–Richelia symbioses from the short-term experiments and represents the values within the red box shown in a. Note that the Richelia enrichment values are given as ratios estimated in the heterocyst and the vegetative cells. The dashed red line indicates the value for a co-occurring non-symbiotic diatom.
