New article describes marine sediments as an urban reservoir for viable E. coli

The article “Marine sediments are identified as an environmental reservoir for Escherichia coli: Comparing signature-based and novel amplicon sequencing approaches for microbial source tracking” examines how bacterial communities in marine sediments change along a coastline to determine if they are affected by human activity.

Author is Ellinor Frank, PhD student at Sweden Water Research and Lund university, together with Jon Ahlinder, Therese Jephson, Kenneth M Persson, Elisabet Lindberg and Catherine J. Paul.


  • Marine sediments were identified as an urban reservoir for viable E. coli.
  • Custom R scripts were created for curated source tracking based on literature.
  • Custom source tracking was more effective at identifying contamination in sediment.
  • All approaches identified bacterial sequences associated with treated wastewater.
  • Wastewater effluent explained the presence of viable E. coli in urban sediments.

Read the article here.

Belongs to project

Evaluation of the bacterial content in sediments in connection to bathing water quality