News - Aquatic Ecotoxicology
21. May 2025, Topic: Aquatic Ecotoxicology , Sediment Ecotoxicology
Why did the trout in the Ruisseau des Marais disappear? A search for clues using ecotoxicological methods
The number of brown trout in the Ruisseau des Marais in the canton of Geneva has fallen dramatically. The Ecotox Centre investigated the causes using a variety of ecotoxicological water and sediment tests and biomarkers.
Read more20. May 2025, Topic: Aquatic Ecotoxicology , Risk Assessment
Quality criteria at the Ecotox Centre - new values and substances, new complete list
Do you need to assess environmental concentrations of chemicals? The Ecotox Centre maintains an extensive database of environmental quality criteria (EQC) and other ecotoxicological threshold values, which we have now expanded to include new information.
Read more14. May 2025, Topic: Aquatic Ecotoxicology , Soil Ecotoxicology , Sediment Ecotoxicology , Risk Assessment
Ecotox Centre at EPFL - Interview with Christof Holliger
Christof Holliger, Professor of Environmental Biotechnology at EPFL, has been closely involved with the Ecotox Centre since it was founded in 2008, initially as part of the direction and the strategic steering committee and later as the representative of EPFL on the host institute council. He retired at the end of February 2025. Here he looks back.
Read more13. May 2025, Topic: Aquatic Ecotoxicology
Assessing the water quality in Lake Geneva
Bioassays are also an important complement to chemical analysis in lakes when it comes to determining water quality. The use of numerous bioassays in Lake Geneva shows that fish embryo tests are particularly sensitive. Reporter tests have also provided valuable information on water pollution.
Read more06. February 2025, Topic: Aquatic Ecotoxicology , Risk Assessment
Ecotox Centre in SRF Rundschau on the ecotoxicity of a controversial pesticide
The Ecotox Centre derives ecotoxicologically based limit values for plant protection products on behalf of the federal government, but only some of these values are subsequently anchored in the Water Protection Ordinance and are therefore legally binding.
Read more05. February 2025, Topic: Aquatic Ecotoxicology , Soil Ecotoxicology , Sediment Ecotoxicology , Risk Assessment
Ecotox Centre in SRF Kassensturz on oven cleaners
Marion Junghans supported SRF Kassensturz in the evaluation of oven sprays.
Read more31. January 2025, Topic: Aquatic Ecotoxicology , Soil Ecotoxicology , Sediment Ecotoxicology , Risk Assessment
Successful dissertation
We congratulate Ali Kizgin on the successful defence of his dissertation. Over the past four years, Ali has been researching at the Ecotox Centre a key challenge in wastewater management - namely the early detection of pollution events using online biomonitoring.
Read more20. December 2024, Topic: Aquatic Ecotoxicology , Risk Assessment
Webinar: Bioassays for wastewater assessment on 18.2.2025, 14.30-16.00
A new series of webinars organised by the German Water Chemistry Society highlights the opportunities and possibilities of bioassays for assessing water quality. The Ecotox Centre is hosting the first webinar on the use of effect-based methods for wastewater testing.
Read more20. November 2024, Topic: Aquatic Ecotoxicology , Sediment Ecotoxicology , Risk Assessment
Sediment quality in Swiss streams - application of the new assessment strategy
The Ecotox Centre has assessed the sediment quality in 18 streams in Switzerland on the basis of 20 prioritised pollutants. In each stream, at least one substance occurred in concentrations above the sediment quality criteria. This was the first time that the new assessment strategy was applied on a large scale.
Read more19. November 2024, Topic: Aquatic Ecotoxicology , Sediment Ecotoxicology , Risk Assessment
How can the positive effects of the WWTP upgrade be measured?
Numerous biotests and biomarkers are used to assess the impact of the upgrade of the Falkenstein WWTP on the water quality of the Dünnern. The quality of communities and the occurrence of antibiotic resistance are also taken into account. The measurements prior to the upgrade show clear differences between the water quality upstream and downstream of the WWTP outflow. Significant improvements are expected as a result of the upgrade.
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