Fig. 4: Chlorophyll a levels of treatments. | npj Clean Water

Fig. 4: Chlorophyll a levels of treatments.

From: Eutrophication drives regime shift via changes in stoichiometric homeostasis-based submerged macrophyte assemblages

Fig. 4

a Chlorophyll a levels on day 30, b chlorophyll a levels on day 60, c chlorophyll a levels on day 90. Error bars demonstrate standard errors (n = 3). Different lowercase letters are significantly different among submerged macrophyte species assemblages in the same P level (p < 0.05). OP, MP, EP indicated three P levels of oligotrophic P (P concentration under detection limit and no P addition), mesotrophic P (0.05 mg L−1), eutrophic P (0.10 mg L−1), respectively. NSP, PM, HV, P + H indicated four levels of treatment for submerged macrophyte species assemblage of no submerged plant, monoculture Potamogeton maackianus, monoculture Hydrilla verticillata, a mixture of the two plants (1:1 plant individuals), respectively.

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