Links between bacterial communities in marine sediments and trace metal geochemistry as measured by in situ DET/DGT approaches

► In this study we compare methods to quantify metals in marine sediments. ► We find that levels of most trace metals are not correlated to bacterial biomass. ► Exceptions are Fe, Mn, Co and As that are correlated to bacterial biomass. ► We conclude that in situ methods are more adapted tools for microbial ecologists. ► We also conclude that ex situ approaches are still necessary.