Partitioning and sources of microbial pollution in the Venice Lagoon

02:08:05 AM
07 2022

Partitioning and sources of microbial pollution in the Venice Lagoon

Graphical abstract

View 2.3K

word 333 read time 1 minute, 39 Seconds

Microbial pollutants are a serious threat to human and environmental health in coastal areas. Based on the hypothesis that pollution from multiple sources may produce a distinct microbial signature and that microbial pollutants seem to distribute between a free-living and a particle-attached fraction, we investigated the occurrence, partitioning and sources of microbial pollutants in water samples collected in the Venice Lagoon (Italy). The area was taken as a case study of an environment characterized by a long history of industrial pollution and by growing human pressure. We found a variety of pollutants from several sources, with sewage-associated and faecal bacteria accounting for up to 5.98% of microbial communities. Sewage-associated pollutants were most abundant close to the city centre.

Faecal pollution was highest in the area of the industrial port and was dominated by human inputs, whereas contamination from animal faeces was mainly detected at the interface with the mainland. Microbial pollutants were almost exclusively associated with the particle-attached fraction. The samples also contained other potential pathogens.

Our findings stress the need for monitoring and managing microbial pollution in highly urbanized lagoon and semi-enclosed systems and suggest that management plans to reduce microbial inputs to the waterways should include measures to reduce particulate matter inputs to the lagoon. Finally, High-Throughput Sequencing combined with computational approaches proved critical to assess water quality and appears to be a valuable tool to support the monitoring of waterborne diseases.

  • a CNR IRBIM, National Research Council – Institute of Marine Biological Resources and Biotechnologies, Largo Fiera della Pesca, 60125 Ancona, Italy
  • b Department of Biological Sciences, Michigan Technological University, Houghton, MI, United States
  • c CNR IGG, National Research Council – Institute of Geosciences and Earth Resources, Via G. Gradenigo 6, 35131 Padova, Italy


  • Sources and partitioning of microbial pollution in an impacted lagoon were studied.
  • Faecal and sewage-associated pollutants accounted for up 5% of the total communities.
  • Microbial pollutants were mostly detected on the particle-attached fraction.
  • Humans appeared to be the most important contributors to the pollution signature.

Source by Redazione

LSNN is an independent editor which relies on reader support. We disclose the reality of the facts, after careful observations of the contents rigorously taken from direct sources, we work in the direction of freedom of expression and for human rights , in an oppressed society that struggles more and more in differentiating. Collecting contributions allows us to continue giving reliable information that takes many hours of work. LSNN is in continuous development and offers its own platform, to give space to authors, who fully exploit its potential. Your help is also needed now more than ever!

In a world, where disinformation is the main strategy, adopted to be able to act sometimes to the detriment of human rights by increasingly reducing freedom of expression , You can make a difference by helping us to keep disclosure alive. This project was born in June 1999 and has become a real mission, which we carry out with dedication and always independently "this is a fact: we have never made use of funds or contributions of any kind, we have always self-financed every single operation and dissemination project ". Give your hard-earned cash to sites or channels that change flags every time the wind blows , LSNN is proof that you don't change flags you were born for! We have seen the birth of realities that die after a few months at most after two years. Those who continue in the nurturing reality of which there is no history, in some way contribute in taking more and more freedom of expression from people who, like You , have decided and want to live in a more ethical world, in which existing is not a right to be conquered, L or it is because you already exist and were born with these rights! The ability to distinguish and decide intelligently is a fact, which allows us to continue . An important fact is the time that «LSNN takes» and it is remarkable! Countless hours in source research and control, development, security, public relations, is the foundation of our basic and day-to-day tasks. We do not schedule releases and publications, everything happens spontaneously and at all hours of the day or night, in the instant in which the single author or whoever writes or curates the contents makes them public. LSNN has made this popular project pure love, in the direction of the right of expression and always on the side of human rights. Thanks, contribute now click here this is the wallet to contribute

Similar Articles / Partitio...ce Lagoon