Learn R Programming

PhotoGEA (version 1.4.0)

c3_temperature_param_flat: C3 temperature response parameters for a flat response

Description

Parameters that specify a flat temperature response (in other words, no dependence on temperature) for important C3 photosynthetic parameters, intended to be passed to the calculate_temperature_response function.

Usage

c3_temperature_param_flat

Arguments

Format

List with 11 named elements that each represent a variable whose temperature-dependent value can be calculated using an Arrhenius equation or a polynomial equation:

  • Gamma_star_at_25: The value of chloroplastic CO2 concentration at which CO2 gains from Rubisco carboxylation are exactly balanced by CO2 losses from Rubisco oxygenation (Gamma_star) at 25 degrees C.

  • Gamma_star_norm: Gamma_star normalized to its value at 25 degrees C.

  • gmc_norm: The mesophyll conductance to CO2 diffusion (gmc) normalized to its value at 25 degrees C.

  • J_norm: The electron transport rate (J) normalized to its value at 25 degrees C.

  • Kc_at_25: The Michaelis-Menten constant for rubisco carboxylation (Kc) at 25 degrees C.

  • Kc_norm: Kc normalized to its value at 25 degrees C.

  • Ko_at_25: The Michaelis-Menten constant for rubisco oxygenation (Ko) at 25 degrees C.

  • Ko_norm: Ko normalized to its value at 25 degrees C.

  • RL_norm: The rate of non-photorespiratory CO2 release in the light (RL) normalized to its value at 25 degrees C.

  • Tp_norm: The maximum rate of triose phosphate utilization (Tp) normalized to its value at 25 degrees C.

  • Vcmax_norm: The maximum rate of rubisco carboxylation (Vcmax) normalized to its value at 25 degrees C.

In turn, each of these elements is a list with at least 2 named elements:

  • type: the type of temperature response

  • units: the units of the corresponding variable.