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Table 3 Comparison of photosynthetic parameters of C. canescens (can), C. hispida (his), and C. tomentosa (tom) from Angersdorfer Teiche (Ang), Asche (Asc) and Bruchwiesen (Bru)

From: Age and site-specific pattern on encrustation of charophytes

SamplePmαRdIcIs
Ang_can33.8 ± 9.6 a0.3 ± 0.1 a− 12.5 ± 4.5 a40.2 ± 7.9 a111.4 ± 23.6 a
Ang_his42.1 ± 6.1 a0.5 ± 0.1 a− 21.9 ± 6.9 a47.6 ± 1.6 ab97.0 ± 28.8 a
Asc_tom64.3 ± 20.2 a0.3 ± 0.3 a− 21.2 ± 6.9 a98.1 ± 47.5 ab347.0 ± 199.3 a
Bru_his64.7 ± 18.8 a0.2 ± 0.0 a− 14.1 ± 1.0 a83.3 ± 11.7 b386.0 ± 142.6 a
  1. Maximum photosynthesis (Pm), dark respiration (Rd) in mmol O2 h−1 g chl a−1 and light compensation point (Ic), light saturation irradiance (Is) in µmol photons m−2 s−1 are presented. α in mmol O2 h−1 g chl a−1 (µmol photons m−2 s−1)−1 is the slope of the P/I curve at limiting irradiance. Sample size was n = 4 for the 40 min measurement of photosynthesis. Different letters indicate significant differences within photosynthetic parameters (Tukey HSD post hoc test, p < 0.05)