Transferable: Biomass transfer class

In cvasi: Calibration, Validation, and Simulation of TKTD Models

Biomass transfer class

Description

By inheriting from class Transferable, a scenario's behavior can be extended to support transfer and reset of biomass at dedicated points during simulation.

Slots

transfer.times

numeric, vector of time points at which transfers occur, e.g. c(7,10,14)

transfer.interval

numeric, interval length until frond transfer to new medium

transfer.biomass

numeric, amount of biomass transferred to new medium

transfer.comp.biomass

character state variable which describes biomass

transfer.comp.scaled

character vector of state variable which will be scaled 1:1 when biomass is modified, e.g. internal toxicant mass

Biomass transfer

Models supporting biomass transfer can be instructed to move a fixed amount of biomass to a new medium after a period of time. This feature replicates a procedure occurring in e.g. Lemna effect studies and may be necessary to recreate study results.

The biomass transfer feature assumes that always a fixed amount of biomass is transferred. Transfers can occur at any fixed point in time or in regular intervals. During a transfer, the biomass is reset to the transferred amount and additional compartments can be scaled 1:1 accordingly, to e.g. reflect the change in internal toxicant mass when biomass is modified. Transfer settings can be modified using set_transfer().

Any transfer time point must also be an output time point. If a transfer occurs, simulation results of that time point will report the model state before the transfer. Be aware that in order to use transfers at regular intervals, the simulation must start at time point zero.

See Also

set_transfer()

Other scenarios: Algae-models, DEB-models, GUTS-RED-models, Lemna-models, Macrophyte-models, Myriophyllum-models, Scenarios

cvasi documentation built on Sept. 23, 2024, 9:08 a.m.