NEWS
lemna 2025-09-12
- Clarification of units according to Klein et al. report version 1.3:
- State variable
BM has unit (g dw) per vessel for lab experiments,
and unit (g dw m-2) for field populations.
- State variable
M_int has unit (ng).
- Parameters
BM_min, BM_L, and r_DW_FN have unit (g dw) per vessel
for lab experiments, and unit (g dw m-2) for field populations.
- Parameter
EC50_int has unit (ug L-1).
- Exposure concentrations must be provided as (ug L-1).
lemna 2025-03-31
- Default value of parameter
beta modified due to typo in previous report
versions, now conforms with Klein et al. (2025), report version 1.2 (to be published);
new value: beta=0.25, old value: beta=0.025.
- Default value for deSolve's parameter
hmax set to hmax=0.01.
- Effect calculation is no longer bound to the interval ]oo, 1], instead the full
range of rational numbers is possible.
- Internal concentration
C_int can no longer become negative in R equations.
- Verification vignette is pre-knitted to reduce built time of the package. See
directory
vignettes/orig/ for the original RMarkdown file.
lemna 2023-04-22
- Minor change to
lemna.c to avoid compiler warnings on CRAN.
lemna 2022-05-10
- Documentation adapted to reference report version 1.1.
- Added a warning message in case removed parameter
BM_threshold is used.
lemna 0.9.2 (2022-03-31)
- Minor adaption of the biomass ODE according to the draft report version 1.1,
handling of low biomass densities was simplified to use only one parameter,
BM_min.
lemna 0.9.1 (2022-01-27)
- Documentation improved and typos fixed.
lemna_desolve() added which allows direct access to the ODE solver.
lemna 0.9.0 (2021-12-21)