Transforming Acute Ecotoxicity Data into Chronic Data: A Statistical Method to Better Inform the Radiological Risk for Nonhuman Species

Karine Beaugelin (1) , Jacqueline Garnier Laplace (2) , Claire Della-Vedova (3)

1 IRSN/PSE-ENV/SRTE/LECO - Laboratoire d'écotoxicologie des radionucléides
2 IRSN/PSE-ENV - Pôle Santé Environnement- Direction Environnement
3 IRSN/PSE-ENV/SRTE/LRTA - Laboratoire de recherche sur les transferts des radionucléides dans les écosystèmes aquatiques

Ecotoxicity data are required to support the derivation of ecological protection criteria, whatever the stressor involved. However their availability is reduced, especially with regard to chronic exposure conditions. As it is much easier to acquire acute toxicity data, these ones are more common. In line with the methods intended to make the best use of the available knowledge, we investigated how one of the methods proposed for chemicals to extract chronic information from acute toxicity data could be transposed to radiotoxicity. We proposed the ACTR (Acute to Chronic Transformation for Radiotoxicity data) method. Once the methodological aspect of the ACTR approach fully developed, we introduce the concept of Endpoint Sensitivity Distribution (ESD), and then compare purely chronic and ACTR-built ESDs for a set of taxa.

Domaines: Sciences de l'environnement

Karine Beaugelin, Jacqueline Garnier Laplace, Claire Della-Vedova. Transforming Acute Ecotoxicity Data into Chronic Data: A Statistical Method to Better Inform the Radiological Risk for Nonhuman Species. Environmental Science and Technology, 2020, 211, pp.12376-12382. ⟨10.1021/acs.est.0c03932⟩. ⟨hal-03103033⟩