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Matthias Liess
Helmholtz Centre for Environmental Research - UFZ
171Publications
47H-index
7,094Citations
Publications 168
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#1Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
#2Toni RatteH-Index: 1
Last.Henner Hollert (RWTH Aachen University)H-Index: 50
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Pesticides contribute to this reduction of biodiversity in ecosystems. Obviously, environmental risk assessment did not prevent adverse pesticide effects on non-target organisms. This called for an identification of processes that are relevant to extrapolate from simplified investigations to the reality of pesticide effects in the field, one of the prominent research areas at the SETAC GLB since two decades. We identify research areas that are relevant to link toxicant effects from test systems ...
1 CitationsSource
#1Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
#2Sebastian Henz (Helmholtz Centre for Environmental Research - UFZ)
Last.Saskia Knillmann (Helmholtz Centre for Environmental Research - UFZ)H-Index: 8
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We present a model to identify the effects of low toxicant concentrations. Due to inadequate models, such effects have so far often been misinterpreted as random variability. Instead, a tri-phasic relationship describes the effects of a toxicant when a broad range of concentrations is assessed: i) at high concentrations where substantial mortality occurs (LC50), we confirmed the traditional sigmoidal response curve (ii) at low concentrations about 10 times below the LC50, we identified higher su...
Source
#1Ralf B. Schäfer (University of Koblenz and Landau)H-Index: 31
#2Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
Last.Martin Scheringer (Masaryk University)H-Index: 51
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2 CitationsSource
#1Naeem Shahid (CUI: COMSATS Institute of Information Technology)H-Index: 5
#2Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
Last.Saskia Knillmann (Helmholtz Centre for Environmental Research - UFZ)H-Index: 8
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Some widely used pesticide mixtures produce more than additive effects according to conventional combined effect models. However, synergistic effects have been so far generally observed at unrealistically high pesticide concentrations. Here, we used Daphnia magna as a test organism and investigated how food limitation—a common ecological stressor—affects the mixture toxicity of a pyrethroid insecticide and azole fungicide. We also compared three models regarding the prediction of mixture effects...
1 CitationsSource
#1Saskia Knillmann (Helmholtz Centre for Environmental Research - UFZ)H-Index: 8
#2Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
Pesticides are currently applied on a large scale in agricultural crops, but also in urban areas, private gardens, and households [1–6].
1 CitationsSource
#1Renato Russo (Helmholtz Centre for Environmental Research - UFZ)H-Index: 1
#2Sven-Bastiaan Haange (Helmholtz Centre for Environmental Research - UFZ)H-Index: 7
Last.Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
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Abstract The European regulatory framework for pesticides generally applies an assessment factor of up to 100 below the acute median lethal concentration (LC50) in laboratory tests to predict the regulatory acceptable concentrations (RACs). However, long-term detrimental effects of pesticides in the environment occur far below the RACs. Here, we explored the metabolic changes induced by exposure to the neonicotinoid insecticide clothianidin in larvae of the mosquito Culex pipiens. We exposed the...
1 CitationsSource
#1Naeem Shahid (CUI: COMSATS Institute of Information Technology)H-Index: 5
#2Jeremias Martin Becker (Helmholtz Centre for Environmental Research - UFZ)H-Index: 4
Last.Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
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Risk assessments of toxicants in aquatic environments are typically based on the evaluation of concentrations in water or sediment. However, concentrations in water are highly variable, while the body burden may provide a better time-integrated measure of pesticide exposure and potential effects in aquatic organisms. Here, we quantified pesticide body burdens in a dominant invertebrate species from agricultural streams, Gammarus pulex, compared them with pesticide concentrations in water samples...
1 CitationsSource
#1Saskia Knillmann (Helmholtz Centre for Environmental Research - UFZ)H-Index: 8
#2Polina Orlinskiy (Helmholtz Centre for Environmental Research - UFZ)H-Index: 4
Last.Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
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Abstract The agricultural use of pesticides leads to environmentally relevant pesticide concentrations that cause adverse effects on stream ecosystems. These effects on invertebrate community composition can be identified by the bio-indicator SPEAR pesticides . However, refuge areas have been found to partly confound the indicator. On the basis of three monitoring campaigns of 41 sites in Central Germany, we identified 11 refuge taxa. The refuge taxa, mainly characterized by dispersal-based resi...
9 CitationsSource
#1Alvine Larissa Meyabeme Elono (Helmholtz Centre for Environmental Research - UFZ)H-Index: 2
#2Kaarina Foit (Helmholtz Centre for Environmental Research - UFZ)H-Index: 10
Last.Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
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Species vulnerability to pesticides depends on physiological sensitivity, the potential to recover, and the ecological context. We assessed the vulnerability of the mosquito Culex pipiens to a repeated treatment with thiacloprid in outdoor microcosms with and without antagonists (competitive and predatory invertebrates). Microcosms were treated repeatedly (three times) with thiacloprid at a concentration of 0.1, 1, or 10 µg/liter. In microcosms without antagonists, the abundance of Cx. pipiens l...
2 CitationsSource
#1Naeem Shahid (CUI: COMSATS Institute of Information Technology)H-Index: 5
#2Jeremias Martin Becker (Helmholtz Centre for Environmental Research - UFZ)H-Index: 4
Last.Matthias Liess (Helmholtz Centre for Environmental Research - UFZ)H-Index: 47
view all 5 authors...
Abstract Exposure to pesticides affects non-target aquatic communities, with substantial consequences on ecosystem services. Adaptation of exposed populations may reduce the effects of pesticides. However, it is not known under which conditions adaptation occurs when only a low toxic pressure from pesticides is present. Here, we show that Gammarus pulex , a dominant macroinvertebrate species in many agricultural streams, acquires increased tolerance to pesticides when recolonization from non-con...
4 CitationsSource
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