Low soil Moisture Slows Uptake and Elimination Rates of Phenanthrene in Springtails

Yang Wang; Stine Slotsbo; Peter B Sørensen; Martin Holmstrup

doi:10.1007/s00128-024-03854-5

Low soil Moisture Slows Uptake and Elimination Rates of Phenanthrene in Springtails

Bull Environ Contam Toxicol. 2024 Jan 28;112(2):25. doi: 10.1007/s00128-024-03854-5.

Authors

Yang Wang¹, Stine Slotsbo¹, Peter B Sørensen¹, Martin Holmstrup²

Affiliations

¹ Department of Ecoscience, Aarhus University, Building 1120, C.F. Møllers Allé 4, Aarhus C, 8000, Denmark.
² Department of Ecoscience, Aarhus University, Building 1120, C.F. Møllers Allé 4, Aarhus C, 8000, Denmark. martin.holmstrup@ecos.au.dk.

Abstract

This study investigated the influence of soil water status on the toxicokinetics of phenanthrene in the springtail Folsomia candida allowing estimation of uptake and elimination rates at two contrasting soil water potentials. Fitting a three-phase model to the observations showed that uptake rate (k_u) was almost two times higher in moist soil (-2 kPa) than in dry soil (-360 kPa). During the first days of the exposure, elimination rate (k_e) was not significantly different in moist and dry soil, but after eight days k_e had increased significantly more in moist soil than in dry soil. Our results confirm the general notion that the exposure route via soil pore water is important. Understanding the significance of soil moisture in exposure and effects of contaminants on soil invertebrates is crucial for assessing the ecological risks associated with soil pollution in a changing climate.

Keywords: Drought; Elimination; Soil water potential; Springtails; Toxicokinetics; Uptake.

MeSH terms

Animals
Arthropods*
Environmental Pollution
Phenanthrenes* / toxicity
Soil
Soil Pollutants*
Water

Substances

Soil
phenanthrene
Phenanthrenes
Soil Pollutants
Water