Meiofaunal and bacterial community response to diesel additions in a microcosm study

► Meiofaunal and bacterial communities are two cornerstones in marine benthic ecosystems. ► Changes in meiofaunal community composition gives information of the status of the community. ► Analysis of microbial fluxes gives insight of the condition of the microbial community. ► PAH additions 2-20 times the background levels affect meiofauna and bacterial communities negatively.