https://researchdata.se/en/catalogue Search results en The dataset contains data that has been collected and processed in a laboratory based transport study of microplastic (MP) fibres by deep-burrowing earthworms (Lumbricus terrestris). The experiments included were 1) a transport study assessing the time-dependent redistribution of microplastic fibres by earthworms in soil columns (E1), 2) a study to assess which microplastic fibre lengths were ingested by earthworms (E2). For E1, MP fibres were mixed into the top 2 cm of a 30 cm thick soil column, earthworms added and the MP fibre redistribution measured after 2 and 4 weeks. The depth-dependent distribution of MP fibre mass was measured using the metal-dope of added MP fibres and MP fibre length by optical microscopy. The control treatment for E1 was with MP fibres but without earthworms. For E2, MP fibres were mixed homogeneously with all of the soil and then packed to 30 cm thick soil columns, earthworms added and collected after 2 weeks; then the earthworms were depurated in petri dishes and the earthworm casts collected, dried and analysed for MP fibre lengths. The control treatment for E2 was with earthworms but without MP fibres. MP fibre lengths were determined with optical microscopy. For more detail see the associated publication. Fri, 20 Mar 2026 12:22:56 GMT https://researchdata.se/en/catalogue/dataset/2025-266 https://researchdata.se/en/catalogue/dataset/2025-266 Swedish University of Agricultural Sciences Wiebke Mareile Heinze Elma Lahive Kathrin Leicht Denise M. Mitrano Geert Cornelis The dataset contains data from a field trial in which soil contaminated with metals and PAHs was stabilised with biochar and peat. The aim was to reduce the solubility and availability of the contaminants while improving soil quality. The trial and analyses are described in more detail in an open access publication in Environments: https://doi.org/10.3390/environments12110447 The data reported here are concentrations of metals, other elements, organic carbon, pH and CEC in soil; concentrations of metals, other elemetns and dissolved organic carbon as well as pH in the soil solution and eluate from leaching tests (batch tests); metal concentrations in grass (Lolium Perenne) and earthworms (Eisenia fetida). Fri, 19 Dec 2025 09:56:02 GMT https://researchdata.se/en/catalogue/dataset/2025-257 https://researchdata.se/en/catalogue/dataset/2025-257 Swedish Geotechnical Institute Charlotta Tiberg Dan Kleja Carin Sjöstedt Mats Fröberg Ingrid Rijk Sigrun Dahlin Maria Larsson Alf Ekblad Viktor Sjöberg Anja Enell