YplantQMC (version 0.6-6)

lightresponse: Non-rectangular hyperbola

Description

A simple light response function that predicts leaf photosynthesis from absorbed PAR.

Usage

lightresponse(PAR, Amax, phi, theta, Rd, ...)

Arguments

PAR

Photosynthetically active radiation (mu mol m-2 s-1)

Amax

Maximum assimilation rate (the asymptote) (mu mol m-2 s-1)

phi

Quantum yield (slope at PAR = 0) (mol mol-1)

theta

Shape of light response curve (0 = rectangular hyperbola, 1 = 'Blackman' response).

Rd

Dark respiration (**positive** value).

...

Further arguments are ignored.

Value

Returns a dataframe with :

A

Net assimilation rate (mu mol m-2 s-1)

See Also

setPhy