Fig. 2: The results of light manipulation experiments in three stations during the winter cruise.
From: Light-driven integration of diazotroph-derived nitrogen in euphotic nitrogen cycle
Responses of nitrogen fixation rates to variable light intensities at four depths in M30 (a–d), M18 (e–h), and K13a (i–l). The pink and blue bars represent nitrogen fixation rates in particulate fraction (NFRP) and in dissolved fraction (NFRD). Data are presented as mean values − standard deviation. The error bars depict the standard deviation of NFRP and NFRD from triplicate rate measurements (n = 3 biologically independent samples). The deep blue dots denote the ratio of NFRD to total nitrogen fixation rates (TNFR). Data are presented as mean values + standard error of mean. The error bars are the standard error of the mean, with propagated standard deviation derived from triplicate rate measurements (n = 3 biologically independent samples). The light intensity in each chart is the daily mean light intensity. The numbers with stars on the X axis show the in situ light intensity at the corresponding layer. Source data are provided as a Source Data file.
