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

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

Yang Wang  1 , Stine Slotsbo  1 , Peter B Sørensen  1 , Martin Holmstrup  2
Affiliations

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

Yang Wang et al. Bull Environ Contam Toxicol. .

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 (ku) 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 (ke) was not significantly different in moist and dry soil, but after eight days ke 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.

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Conflict of interest statement

This publication reflects only the authors’ views, and the European Commission is not responsible for any use that may come from the information it contains. The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
The concentration of phenanthrene in springtail tissues during uptake (days 0–14; 40 mg/kg dry soil) and in the elimination phase (days 14–20; uncontaminated soil). Lines represent model fitting to raw data. Dots represent observations in each group for each day. Points with error bars represent the mean ± SE (n = 3–5)
See this image and copyright information in PMC

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