The establishment of EVISA is funded by the EU through
the Fifth Framework Programme (G7RT- CT- 2002- 05112).
Supporters of EVISA includes:
biomagnification factor, B
Ratio of concentrations of a compound at two consecutive trophic levels at steady state. It can also be expressed in terms of a rate constant-based bioaccumulation model
B = Cn/Cn–1= αf/ke
where α is assimilation efficiency, f is feeding rate, and ke is the first-order elimination constant. B can be calculated from field data on assumed trophic relations or from laboratory feeding experiments. See also: trophic enrichment factor.