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Table 3 Comparison of results fitted by models 1, 2, 3 and 4 with measured data in marine phytoplankton

From: Quantifying photosynthetic performance of phytoplankton based on photosynthesis–irradiance response models

ModelsPhotosynthetic parameters
α (μmol O2 mg−1 Chl a h−1/μmol photons m−2 s−1)Pnmax (μmol O2 mg−1 Chl a h−1)Isat (μmol photons m−2 s−1)Ic (μmol photons m−2 s−1)Rd (μmol O2 mg−1 Chl a h−1)R2AICc
I. galbana
 Model 10.411 ± 0.032a119.51 ± 4.72a229.90 ± 13.60b63.12 ± 2.33a25.97 ± 2.54a0.981 ± 0.007a− 3.683
 Model 20.468 ± 0.037a97.45 ± 3.02b709.60 ± 26.89a56.71 ± 2.41a26.59 ± 2.60a0.986 ± 0.007a1.181
 Model 30.373 ± 0.020a97.55 ± 3.37b699.26 ± 32.19a65.51 ± 3.48a23.98 ± 1.95a0.989 ± 0.007a0.131
 Model 40.482 ± 0.037a98.33 ± 3.20b766.17 ± 24.38a61.06 ± 2.82a26.63 ± 2.44a0.986 ± 0.008a1.657
 Measured ≈ 94.14≈ 800≈ 62≈ 24.29  
D. salina
 Model 10.874 ± 0.023c123.09 ± 5.88a116.90 ± 23.87c23.87 ± 1.66a20.92 ± 1.97a0.944 ± 0.016b0.122
 Model 21.006 ± 0.033b113.73 ± 6.24a453.39 ± 6.87b21.27 ± 1.75a21.39 ± 1.81a0.990 ± 0.001a− 0.018
 Model 30.918 ± 0.058bc114.45 ± 6.24a444.33 ± 6.04b23.09 ± 2.29a19.89 ± 1.14a0.989 ± 0.007a− 0.346
 Model 41.202 ± 0.037a113.31 ± 5.87a510.24 ± 2.92a21.67 ± 1.93a23.30 ± 1.93a0.983 ± 0.002a1.857
 Measured ≈ 119.24≈ 500≈ 23≈ 20.25  
P. subcordiformis
 Model 11.975 ± 0.055d107.96 ± 5.58a41.25 ± 1.62d13.40 ± 2.21a26.32 ± 3.93a0.883 ± 0.010c0.871
 Model 22.479 ± 0.023c94.64 ± 6.65a212.36 ± 7.80c11.05 ± 1.65a27.45 ± 4.30a0.975 ± 0.009a1.650
 Model 32.834 ± 0.056b95.59 ± 6.63a251.97 ± 9.73b10.82 ± 1.87a26.13 ± 4.26a0.958 ± 0.013ab3.529
 Model 43.640 ± 0.031a92.20 ± 6.56a299.55 ± 10.72a9.68 ± 1.71a28.36 ± 4.21a0.934 ± 0.013b5.104
 Measured ≈ 100.13≈ 150≈ 14≈ 24.49  
  1. Different lowercase letters identify groups that are significantly different (p < 0.05)