Changes in version 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).

                     Changes in version 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.

                     Changes in version 2023-04-22                      

  - Minor change to lemna.c to avoid compiler warnings on CRAN.

                     Changes in version 2022-05-10                      

  - Documentation adapted to reference report version 1.1.
  - Added a warning message in case removed parameter BM_threshold is
    used.

                 Changes in version 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.

                 Changes in version 0.9.1 (2022-01-27)                  

  - Documentation improved and typos fixed.
  - lemna_desolve() added which allows direct access to the ODE solver.

                 Changes in version 0.9.0 (2021-12-21)                  

  - Initial release