Multiple optimization of C4 photosynthesis.

Usage

mOpc4photo(data, ID = NULL, ivmax = 39, ialpha = 0.04, iRd = 0.8, iupperT = 37.5, ilowerT = 3, ikparm = 0.7, itheta = 0.83, ibeta = 0.93, curve.kind = c("Q", "Ci"), op.level = 1, op.ci = FALSE, verbose = FALSE, ...)

Arguments

data

observed assimilation data, which should be a data frame or matrix. The first column should contain a run or id. The second column should be observed net assimilation rate (\mu mol m^{-2} s^{-1}). The third column should be the observed quantum flux (\mu mol m^{-2} s^{-1}). The fourth column should be observed temperature of the leaf (Celsius). The fifth column should be the observed relative humidity in proportion (e.g. 0.7). An optional sixth column can contain atmospheric CO2.

ID

Optional vector with an alternative ID tothe one used in data for runs. The length shoudl be equal to the number of runs.

ivmax

Initial value for vmax. It can be a single value or a vector of length equal to the number of runs.

ialpha

Initial value for alpha. It can be a single value or a vector of length equal to the number of runs.

iRd

Initial value for vmax. It can be a single value or a vector of length equal to the number of runs.

ikparm

Initial value for vmax. It can be a single value or a vector of length equal to the number of runs.

itheta

Initial value for vmax. It can be a single value or a vector of length equal to the number of runs.

ibeta

Initial value for vmax. It can be a single value or a vector of length equal to the number of runs.

curve.kind

If 'Q' a type of response which mainly depends on light will be assumed. Typically used to optimized light response curves or diurnals. Use 'Ci' for A/Ci curves (stomatal conductance could also be optimized).

op.level

optimization level. If equal to 1 vmax and alpha will be optimized. If 2, vmax, alpha and Rd will be optimized. If 3, vmax, alpha, theta and Rd will be optimized.

op.ci

Whether to optimize intercellular CO2. Default is FALSE as 'fast-measured' light curves do not provide reliable values of Ci.

verbose

Whether to display output about convergence of each run.

...

Used to supply additional arguments to Opc4photo.

Examples

data(simAssim)

See also

Author