Data and code from: Suppression of soil microbiota rather than neighbours facilitates absinthe (<em>Artemisia absinthium</em>) invasion in native grasslands

Many mechanisms can lead to successful plant invasion, but their importance is often context dependent. One such mechanism is allelopathy: chemical inhibition of neighbouring plants. The importance of allelopathy may be mediated by soil microbiota and environmental conditions, and depend upon the species or functional group affected. To better understand how these factors alter allelopathy and competition, we conducted a combined field and greenhouse experiment focusing on the invasive species absinthe (Artemisia absinthium). We experimentally introduced absinthe into native grassland via disturbances and collected soil from beneath these plants after three years. We then tested how invaded versus uninvaded field soil, within burned or unburned grassland, affected the performance of absinthe, two forbs (Achillea millefolium and Medicago sativa), and two grasses (Bromus inermis and Elymus lanceolatus) in a greenhouse competition experiment. We included activated carbon and soil steriliza..., , # Data and code from: Suppression of soil microbiota rather than neighbours facilitates absinthe (*Artemisia absinthium*) invasion in native grasslands Dataset DOI: [10.5061/dryad.8pk0p2p3k](https://doi.org/10.5061/dryad.8pk0p2p3k) ## Description of the data and file structure ### Files and variables #### File: Absinthe_Allelopathy_Oikos_Code__For_Final_Publication_.R **Description:**Â Code associated with Wasan et al 2026 Oikos #### File: Absinthe_Allelopathy_Oikos_Dataset.xlsx **Description:**Â Data on plant growth responses to absinthe-conditioned soils from Wasan et al 2026 Oikos. Also includes data on soil analyses. The file contains five tabs: one for each analysis performed. These are \"Soil Analysis\" which contains data on total nitrogen, \"Absinthe Alone\" which contains biomass data for absinthe (Artemisia absinthium) when grown without competitors, \"Absinthe competition\" which contains absinthe biomass data when grown in competition with other species, \"Alfalfa\" which conta..., ,