Fig. 7: Stoichiometry of bloom in mixed layer regime. | Nature Communications

Fig. 7: Stoichiometry of bloom in mixed layer regime.

From: Sea-ice derived meltwater stratification slows the biological carbon pump: results from continuous observations

Fig. 7

Scatter plots of daily averages of apparent oxygen utilization (AOU) [μmol l−1], nitrate [μmol l−1], pCO2 [μatm], and chlorophyll [μg l−1] colored by date in 2018 at HG-IV. a Nitrate vs. AOU, b pCO2 vs. AOU, c chlorophyll vs. AOU, and d chlorophyll vs. nitrate. Colored squares are data between 01-May-2018 and 15-Jun-2018 during the spring bloom. The squares are connected by gray solid lines. A least-squares regression curve is plotted as a solid black line for the time period and the regressions’ parameters for the model y = m × x + b are given in the table at the bottom for the different parameter relations and time periods. Colored diamonds/dashed lines are the same for the time period after the bloom (15-Jun-2018 to 01-Aug-2018). Note that this analysis could not be done in 2017 as the observations were below the productive layer and no nitrate and chlorophyll observations exist.

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