Rapid A/C_i Curve Fitting Methods

Software packages publicly available for analyzing & fitting photosynthetic CO₂ & light response curves

There are a number of free software resources available for CIRAS customers for analysis and fitting photosynthetic related curves on the web. Some software is designed for only gas exchange and some for both gas exchange and chlorophyll fluorescence. Some of these resources are highlighted below and we hope you find them useful. We highly suggest that users review all available resources and determine the best model to fit your data. If you discover a new model and would like to share it, we would be happy to post it here to support the scientific research community.

PP Systems does not endorse or take responsibility for any software that is made available publicly on the internet.

Fitting Models to Light Response Curves

• Microsoft Excel spreadsheet from Lobo et al., 2013: http://link.springer.com/article/10.1007%2Fs11099-013-0045-y
• Paper providing web addresses to an R-based fitting program: doi:10.1371/journal.pone.0143346

Gas Exchange (Fitting the Farquhar, von Caemmerer and Berry (FvCB) Model

• Web-based Exhaustive Dual Optimization (EDO) approach from Gu et al., 2010: http://leafweb.ornl.gov
• SAS program from Dubois et al., 2007: http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2007.02182.x/full
• Microsoft Excel spreadsheet from Sharkey, 2015: http://onlinelibrary.wiley.com/doi/10.1111/pce.12641/full

Gas Exchange and Chlorophyll Fluorescence

• Excel spreadsheet from Bellasio et al., 2015: http://onlinelibrary.wiley.com/doi/10.1111/pce.12560/full
• Excel spreadsheet from Mouleau-Ngangue et al., 2017: http://onlinelibrary.wiley.com/doi/10.1111/nph.14260/full

Miscellaneous Software Resources

• Paper providing web addresses to R-based programs for stomatal optimization and other analyses: doi:10.1371/journal.pone.0143346
• Excel spreadsheet http://landflux.org/Tools.php