Multiple stressors and pollutants

Freshwaters are used intensively by humans, meaning that they are exposed to a number of stressors. We explore the complex interrelations and impacts of the different stressors: How do nutrients and contaminants enter our surface waters, which factors play a central role in this process, and where are rivers and lakes in a particularly poor state? Nutrient inputs of nitrogen and phosphate, for example, may affect water quality, leading to algal blooms. It is often impossible to completely remove pharmaceuticals and biocides during wastewater treatment. They then end up in rivers and lakes, where they may affect the hormonal metabolism of fish and amphibians. Mining may lead to the contamination of adjacent freshwaters with potash and sulphate. Land use change, urbanisation, water control structures and the increasing use of artificial lighting at night (light pollution) exert additional pressure on our freshwaters. In our research, we acknowledge that use by humans is an important part of reality – only then can future-oriented solutions be developed.

Related News

press release

Citizen science: research project on light pollution seeks support

What effect does street lighting have on insects and what could an environment-friendly lighting design look like? This is what researchers are investigating together with citizen scientists in Mecklenburg-Western Pomerania, Hesse and Brandenburg.
press release

Do urban fish exhibit impaired sleep?

Light pollution can suppress the production of melatonin in fish, even at very low light intensities, a finding established by Franziska Kupprat, Franz Hölker and Werner Kloas from IGB.

Related Projects

Species protection through environmental friendly lighting (AuBe)

Species protection through environmentally friendly lighting Tatort streetlight discovers causes for insect decline. Street lighting can severely impair nocturnal flying insects, as many insects are attracted to the light of the luminaires and withdrawn from their actual habitats. Help us to investigate which insects are affected by street lighting and how environmentally sound lighting solutions can help preserve the insects' habitat.
Contact person
Sibylle Schroer
Franz Hölker
Department
(Dept. 1) Ecohydrology
Start
06/2019
End
05/2025
Topic

Sulphate in River Spree and Lake Müggelsee

Scientific investigations in mining landscape on the example of the problem "Brown Spree". Long-term development of sulphate concentration in the Spree and Müggelsee ...
Contact person
Tobias Goldhammer
Thomas Rossoll
Department
(Dept. 6) Chemical Analytics and Biogeochemistry
Start
05/2015
End
12/2020
Topic

Host−parasite interactions in hybridizing Daphnia

Eutrophication is a worldwide environmental problem accelerated by global warming, affecting the stability of aquatic ecosystems and having long-lasting consequences. In this project we investigate if and how eutrophication affects two interacting evolutionary processes: disease spread and interspecific hybridization.
Contact person
Justyna Wolinska
Department
(Dept. 2) Ecosystem Research
Start
01/2017
End
12/2019
Topic

Urban Water Interfaces

DFG Research training group  
Contact person
Gunnar Nützmann
Mark Gessner
Sabine Hilt
Department
(Dept. 1) Ecohydrology
(Dept. 2) Ecosystem Research
(Dept. 3) Experimental Limnology
(Dept. 6) Chemical Analytics and Biogeochemistry
Start
07/2015
End
06/2024
Topic

ACTION

ACTION transforms the way we do citizen science today.
Contact person
Franz Hölker
Kat Austen
Department
(Dept. 1) Ecohydrology
Start
02/2019
End
01/2022
Topic

Related Events

Related Downloads

Urban Water Interfaces (UWI) Research Aligned In Common Topics

Current research carried out by doctoral students within the interdisciplinary research training group "Urban Water Interfaces" (UWI), a joint initiative of TUB and IGB.

Loss of the Night

Transdisciplinary Research on Light Pollution

MONERIS

City, country, river: modelling and managing nutrient pollution in lakes and rivers

Experts at IGB

Franz Hölker

Research group leader
Working group
Light pollution and ecophysiology

Ilka Lutz

Research group leader
Working group
Effects of endocrine active substances

Thomas Meinelt

Research group leader
Working group
Fish pathology, ecotoxicology and stress ecology

Matthias Stöck

Research group leader
Working group
Evolutionary biology and ecotoxicology of amphibians and fish

Markus Venohr

Research group leader
Working group
River system modelling

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