Meiofaunal and bacterial community response to diesel additions in a microcosm study
Artikel i vetenskaplig tidskrift, 2012

Effects of low PAH-containing diesel were studied in a 60-day microcosm experiment at PAH concentrations 130, 1300 and 13,000 lg/kg sediment. Nutrient fluxes, potential nitrification and meiofaunal community composition were analysed at three time points. Changed PNOx-fluxes indicated reduced sediment nitrification in Medium and High with time, in agreement with lowered potential nitrification rates in all treatments. Reduction in silicate and phosphate fluxes over time suggested severe effects on activity of meiofauna. Reduced activity increased the anoxic sediment layer, which could have contributed to the changed PNOx-fluxes. There were significant differences in meiofaunal community composition after 30 and 60 days in Medium and High. Changes were due to increasing numbers of harpacticoids and the foraminiferan group Rotaliina, as well as decreasing numbers of Nematodes and the foraminiferan group Reophax. In spite of the low PAH-level, small additions of this diesel can still have pronounced effects on meiofaunal and bacterial communities.


Non-lethal effects


Nutrient fluxes


Community response


Fredrik Lindgren

Chalmers, Sjöfart och marin teknik, Maritime Operations

Ida-Maja Hassellöv

Chalmers, Sjöfart och marin teknik, Maritime Operations

Ingela Dahllöf

Göteborgs universitet

Marine Pollution Bulletin

0025-326X (ISSN)

Vol. 64 595-601



Biologiska vetenskaper

Farmakologi och toxikologi