oneStation_dDOdt: Time derivative of DO concentration

In mtalluto/NSmetabolism: N-Station Stream Metabolism Modelling

Description

Time derivative of DO concentration

Usage

oneStation_dDOdt(t, y, parms, data, return_list = FALSE)

Arguments

t	Time step for the ode integration
y	Current state (dissolved oxygen concentration)
parms	a named vector of parameters; see details
data	a list of data for the ode; see details
return_list	logical, should a list (suitable for deSolve) be returned?

Details

params must be a vector including the following named items:

• P1 $(W min g^-1 O_2)$ inverse of the slope of a photosynthesis–irradiance curve at low light intensity

• P2 $(m^2 min g^-1 O_2)$ inverse maximum photosynthesis rate; can be zero to assume GPP is linear with light intensity instead of saturating

• k600 coefficient of gas exchange for a gas with a Schmidt number of 600 (see kT()).

• ER24_20 daily ecosystem respiration rate, standardized at 20 degrees C

data is a named list of (constant) data items, including the following:

• PAR a function that takes time as a parameter and returns light intensity $(W/m^2)$

• temp a function that takes time as a parameter and returns water temperature (degrees C)

• P pressure, in atmospheres

• z Depth, in meters

Value

Time derivative of dissolved oxygen

References

Fuß, T. et al. (2017). Land use controls stream ecosystem metabolism by shifting dissolved organic matter and nutrient regimes. Freshw Biol 62:582–599.

 Van de Bogert MC et al. 2007. Assessing pelagic and benthic metabolism using free
	 water measurements. *Limnol. Oceanogr. Methods* **5**:145–155. 

mtalluto/NSmetabolism documentation built on May 3, 2021, 7:51 p.m.