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Table 2 Comparison of results fitted by models 1, 2, 3 and 4 with measured data in freshwater 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
M. aeruginosa
 Model 12.404 ± 0.103b260.46 ± 10.72a97.83 ± 2.42d10.57 ± 1.12a25.63 ± 3.86a0.721 ± 0.047b9.270
 Model 22.416 ± 0.074b290.74 ± 15.09a380.17 ± 4.89b9.47 ± 1.05a22.92 ± 2.75a0.973 ± 0.010a3.772
 Model 31.770 ± 0.026c296.37 ± 14.89a340.82 ± 4.49c10.26 ± 2.54a18.23 ± 4.61a0.969 ± 0.015a4.687
 Model 42.967 ± 0.067a283.55 ± 14.53a415.25 ± 2.33a9.53 ± 1.05a26.86 ± 2.75a0.964 ± 0.007a6.783
 Measured ≈ 290.83≈ 400≈ 10≈ 18.27  
M. wesenbergii
 Model 11.879 ± 0.039b184.72 ± 2.57c82.57 ± 2.56d15.85 ± 1.68a29.73 ± 2.91ab0.758 ± 0.031b7.329
 Model 21.920 ± 0.030b195.32 ± 1.50ab352.20 ± 7.29b14.70 ± 1.87a28.15 ± 2.44ab0.974 ± 0.006a4.091
 Model 31.309 ± 0.074c201.37 ± 2.94a322.50 ± 6.96c15.50 ± 2.37a20.46 ± 3.90b0.978 ± 0.007a2.641
 Model 42.474 ± 0.071a188.62 ± 2.31bc389.62 ± 9.62a14.81 ± 1.47a33.19 ± 2.31a0.954 ± 0.011a7.327
 Measured ≈ 201.29≈ 400≈ 15≈ 23.73  
S. obliquus
 Model 11.499 ± 0.019c265.88 ± 5.70a159.64 ± 1.84d17.82 ± 3.32a26.61 ± 4.67a0.912 ± 0.006b5.606
 Model 21.581 ± 0.010b268.80 ± 5.21a527.39 ± 8.93b15.24 ± 3.18a24.05 ± 4.91a0.989 ± 0.002a2.757
 Model 31.268 ± 0.030d268.70 ± 5.25a481.60 ± 8.51c15.34 ± 3.74a19.25 ± 4.59a0.989 ± 0.001a2.607
 Model 41.751 ± 0.021a268.11 ± 4.98a561.94 ± 8.40a15.82 ± 3.15a26.29 ± 4.79a0.987 ± 0.002a4.077
 Measured ≈ 267.37≈ 400≈ 15≈ 19.91  
Chlorococcum sp.
 Model 10.979 ± 0.007c83.86 ± 4.98a68.66 ± 4.47c17.00 ± 1.80a16.66 ± 1.82a0.935 ± 0.009c− 2.268
 Model 21.190 ± 0.020b75.25 ± 3.79a311.04 ± 17.27b14.59 ± 1.52a17.43 ± 2.09a0.984 ± 0.001a− 1.625
 Model 31.247 ± 0.022b76.15 ± 3.89a339.85 ± 15.19b15.02 ± 1.76a16.82 ± 2.09a0.979 ± 0.002ab− 0.234
 Model 41.572 ± 0.024a74.59 ± 4.23a396.06 ± 15.93a13.87 ± 1.59a18.64 ± 2.18a0.964 ± 0.001b1.765
 Measured ≈ 76.06≈ 400≈ 15≈ 15.03  
  1. Different lowercase letters identify groups that are significantly different (p < 0.05)