Algae-models: Algae models

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

Algae models

Description

Overview of supported Algae models

Details

• Algae_Weber() by Weber et al. (2012)

• Algae_TKTD() based on Weber et al. (2012), but with scaled damage

• Algae_Simple() Simple growth model without additional forcing variables

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.

References

Weber D, Schaeffer D, Dorgerloh M, Bruns E, Goerlitz G, Hammel K, Preuss TG and Ratte HT, 2012. Combination of a higher-tier flow-through system and population modeling to assess the effects of time-variable exposure of isoproturon on the green algae Desmodesmus subspictatus and Pseudokirchneriella subcapitata. Environmental Toxicology and Chemistry, 31, 899-908. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1002/etc.1765")}

EFSA Panel on Plant Protection Products and their Residues, 2018. Scientific opinion on the state of the art of Toxicokinetic/Toxicodynamic (TKTD) effect models for regulatory risk assessment of pesticides for aquatic organisms. EFSA journal 16:5377 \Sexpr[results=rd]{tools:::Rd_expr_doi("10.2903/j.efsa.2018.5377")}

See Also

Lemna-models, Transferable

Other algae models: Algae_Simple(), Algae_TKTD(), Algae_Weber()

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

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