Eilers_PI: Fitting a photosynthesis-irradiance curve
In padpadpadpad/TeamPhytoplankton: For studies into thermal adaptation

Description Usage Arguments Details Author(s) References See Also

Uses the Eilers & Peeters (1988) PI model to fit a model to photosynthesis data across many light levels typically taken using the Oxylab system. Benefits from modelling Pmax without any other derivatives so can test the probability of the parameter.

1	Eilers_PI(Pmax, Iopt, a, I)

`Pmax`	The photosynthetic maxima
`Iopt`	The optimal light intensity
`a`	The initial slope of the curve
`I`	Light

When using nlsLoop, set the parameters lower limits to 0 as the equation has two solutions and with equivalent AIC scores so could return some unwanted negative values for some parameters.

Daniel Padfield

Eilers, P.H.. & Peeters, J.C.. (1988) A model for the relationship between light intensity and the rate of photosynthesis in phytoplankton. Ecological Modelling, 42, 199–215.

Platt_PI for fitting an alternative photosynthesis irradiance curve

padpadpadpad/TeamPhytoplankton documentation built on May 24, 2019, 5:59 p.m.