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Environmental Sciences Europe

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https://www.readbyqxmd.com/read/30416929/setac-glb-and-setac-europe-sac-a-liaison-promoting-the-next-generation-of-ecotoxicologists-and-environmental-chemists
#1
EDITORIAL
Simon Lüderwald, Kymberly Newton, Katharina Heye, Kristina Bitter, Samuel Moeris, Lena Benner, Paul Böhm, Josef Koch, Alexander Feckler, Mafalda Castro, Andreas Erikkson
This commentary is an introduction for students to the Society of Environmental Toxicology and Chemistry (SETAC) and its Student Advisory Council (SAC). As young academics face challenges while trying to develop their careers, SETAC and the SAC help facilitate student involvement in the various communities within the society that can help to develop the students' careers within the environmental sciences [e.g. the German Language Branch (GLB)]. This piece would also like to emphasize and pay homage to the continual cooperation between the SAC and the ESEU, which provides a scientific platform to communicate internationally and beyond the borders of SETAC, as well as offer heartfelt congratulations from the SAC to the GLB for their "20 Years SETAC GLB" and deep gratitude for their strong advocacy and support of the SAC...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30416928/a-decade-of-fluvial-morphodynamics-relocation-and-restoration-of-the-inde-river-north-rhine-westphalia-germany
#2
Anna-Lisa Maaß, Verena Esser, Roy M Frings, Frank Lehmkuhl, Holger Schüttrumpf
Background: Relocations and restorations do not only change the ecological passability and sediment continuity of a river but also its flow behavior and fluvial morphodynamics. Sediment transport processes and morphological development can be assessed with field measurements, also taking the transport of sediment-bounded contaminants as a tracer material for fluvial morphodynamics into account. The objective of this study was to determine the morphological development of the Inde River (a tributary of the Rur River in North-Rhine Westphalia, Germany) towards its pre-defined guiding principle after a relocation and restoration in 2005 AD...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30416927/limits-of-concern-suggestions-for-the-operationalisation-of-a-concept-to-determine-the-relevance-of-adverse-effects-in-the-era-of-gmos
#3
Marion Dolezel, Marianne Miklau, Andreas Heissenberger, Wolfram Reichenbecher
Background: The European Food Safety Authority proposed a concept for the environmental risk assessment of genetically modified plants in the EU that is based on the definition of thresholds for the acceptability of potential adverse effects on the environment. This concept, called Limits of Concern (LoC), needs to be further refined to be implemented in the environmental risk assessment of genetically modified organisms. Methods: We analyse and discuss how LoC can be defined for the environmental risk assessment for three different types of genetically modified plants...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30370193/a-new-ecotoxicological-test-method-for-genetically-modified-plants-and-other-stressors-in-soil-with-the-black-fungus-gnat-bradysia-impatiens-diptera-current-status-of-test-development-and-dietary-effects-of-azadirachtin-on-larval-development-and-emergence-rate
#4
Stephan Jänsch, Johannes Bauer, David Leube, Mathias Otto, Jörg Römbke, Hanka Teichmann, Karolina Waszak
Background: Few suitable and standardized test methods are currently available to test the effects of genetically modified plants (GMP) on non-target organisms. To fill this gap and improve ecotoxicological testing for GMP, we developed a new soil ecotoxicological test method using sciarid larvae as test organisms. Results: Bradysia impatiens was identified as a candidate species. Species of the genus Bradysia occur in high numbers in European agroecosystems and B...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30294516/systematic-mirnome-profiling-reveals-differential-micrornas-in-transgenic-maize-metabolism
#5
Sarah Zanon Agapito-Tenfen, Vinicius Vilperte, Terje Ingemar Traavik, Rubens Onofre Nodari
Background: While some genetically modified organisms (GMOs) are created to produce new double-stranded RNA molecules (dsRNA), in others, such molecules may occur as an unintended effect of the genetic engineering process. Furthermore, GMOs might produce naturally occurring dsRNA molecules in higher or lower quantities than its non-transgenic counterpart. This study is the first to use high-throughput technology to characterize the miRNome of commercialized GM maize events and to investigate potential alterations in miRNA regulatory networks...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30294515/modelling-effects-of-time-variable-exposure-to-the-pyrethroid-beta-cyfluthrin-on-rainbow-trout-early-life-stages
#6
Elke I Zimmer, Thomas G Preuss, Steve Norman, Barbara Minten, Virginie Ducrot
Background: Available literature and regulatory studies show that the severity of effects of beta-cyfluthrin (a synthetic pyrethroid) on fish is influenced by the magnitude and duration of exposure. To investigate how the exposure pattern to beta-cyfluthrin (constant vs peak) may influence the response of the fish, we used a mechanistic effect model to predict the survival and growth of the rainbow trout over its early life stages (i.e. egg, alevin and swim-up fry). We parameterized a toxicokinetic-toxicodynamic (TKTD) module in combination with a dynamic energy budget model enabling us to describe uptake and elimination, as well as to predict the threshold concentration for survival and sublethal effects (feeding behaviour and growth)...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30294514/direct-and-indirect-effects-of-pesticides-on-a-benthic-grazer-during-its-life-cycle
#7
Marcus Rybicki, Dirk Jungmann
Background: Macroinvertebrates in aquatic ecosystems are repeatedly exposed to pesticides during their life cycle. Effects of consecutive exposure during different life stages and possible synergistic effects are not addressed in the standardized hazard assessment. The present study investigated two environmentally relevant exposure scenarios in batch (microcosm) and artificial indoor stream (mesocosm) experiments using the larvae of the mayfly Rhithrogena semicolorata (grazer) and natural aufwuchs...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30221106/multiple-biomarker-responses-in-caged-benthic-gastropods-bellamya-aeruginosa-after-in-situ-exposure-to-taihu-lake-in-china
#8
Qian Li, Meng Wang, Lei Duan, Yanling Qiu, Taowu Ma, Ling Chen, Magnus Breitholtz, Åke Bergman, Jianfu Zhao, Markus Hecker, Lingling Wu
Background: Freshwater sediments have been recognized as a long-term sink and potential source for environmental pollutants released into the aquatic ecosystems. In this study, the sediment quality of Taihu Lake, which is susceptible to anthropogenic contamination, was assessed by a combination of chemical analytical and biological end points. Specifically, the snail Bellamya aeruginosa was caged in situ at two locations representing different pollution levels for different exposure times (7, 14 and 21 days)...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30221105/towards-a-holistic-and-solution-oriented-monitoring-of-chemical-status-of-european-water-bodies-how-to-support-the-eu-strategy-for-a-non-toxic-environment
#9
Werner Brack, Beate I Escher, Erik Müller, Mechthild Schmitt-Jansen, Tobias Schulze, Jaroslav Slobodnik, Henner Hollert
The definition of priority substances (PS) according to the Water Framework Directive (WFD) helped to remove many of these chemicals from the market and to reduce their concentrations in the European water bodies. However, it could not prevent that many of these chemicals have been replaced by others with similar risks. Today, monitoring of the PS-based chemical status according to WFD covers only a tiny fraction of toxic risks, extensively ignores mixture effects and lacks incentives and guidance for abatement...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30221104/a-qpcr-method-to-quantify-bioavailable-phosphorus-using-indigenous-aquatic-species
#10
Yanan Yang, Jianghua Yang, Xiaowei Zhang
Background: Bioavailable phosphorus (BAP) represents the sum of phosphorus that is readily available for algae growth and is useful to indicate the severity of eutrophication in aquatic environments. Results: Here, a quantitative real-time PCR (qPCR)-based bioassay was developed to quantify BAP using the indigenous cyanobacterium species Anabaena sp. of Lake Tai, a large and shallow eutrophic lake in the Yangtze Valley, China. Primers were designed to quantify the gene expression of alkaline phosphatase ( phoA / phoA - like) and phosphate transporter ( pst1 ) genes of Anabaena ...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30221103/long-term-effects-of-environmentally-relevant-concentrations-of-silver-nanoparticles-on-major-soil-bacterial-phyla-of-a-loamy-soil
#11
Anna-Lena Grün, Christoph Emmerling
Background: The growing production and use of engineered AgNP in industry and private households make increasing concentrations of AgNP in the environment unavoidable. Although we already know the harmful effects of AgNP on pivotal bacterial driven soil functions, information about the impact of silver nanoparticles (AgNP) on the soil bacterial community structure is rare. Hence, the aim of this study was to reveal the long-term effects of AgNP on major soil bacterial phyla in a loamy soil...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30175022/do-consumers-care-about-substances-of-very-high-concern-in-articles
#12
Sabrina Hartmann, Ursula Klaschka
Background: Consumers have the right to inquire whether a consumer article contains substances of very high concern ('SVHC right to know'). This communication tool is designed to stimulate suppliers to substitute such ingredients. A survey among 1321 consumers with high motivation and interest in harmful substances in everyday products was conducted to understand the acceptance of this 'right to know' among consumers. Results: Only one out of seven survey participants stated to be well informed about the 'SVHC right to know' with nearly all of them having good self-reported chemical knowledge...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30148026/a-combined-experimental-and-modeling-study-to-evaluate-ph-dependent-sorption-of-polar-and-non-polar-compounds-to-polyethylene-and-polystyrene-microplastics
#13
Sven Seidensticker, Peter Grathwohl, Jonas Lamprecht, Christiane Zarfl
Background: The contamination of aquatic ecosystems with both anthropogenic pollutants and particles in particular (microscopic) plastic debris items is of emerging concern. Since plastic particles can accumulate contaminants and potentially facilitate their transport, it is important to properly investigate sorption mechanisms. This is especially required for a large variety of chemicals that can be charged under environmental conditions and for which interactions with particles may hence go beyond mere partitioning...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30148025/equilibrium-sampling-of-hocs-in-sediments-and-suspended-particulate-matter-of-the-elbe-river
#14
Nora Claire Niehus, Sabine Schäfer, Christel Möhlenkamp, Gesine Witt
Background: Chemical quality of sediment and suspended particulate matter (SPM) is usually assessed by total chemical concentrations ( C total ). However, the freely dissolved concentration ( C free ) is the ecologically more relevant parameter for bioavailability, diffusion and bioaccumulation. In recent studies, equilibrium sampling has been applied to determine C free of hydrophobic organic contaminants (HOCs) in the sediment pore water, whereas such data are missing for SPM. We applied solid-phase micro-extraction to measure and compare C free of PAHs and PCBs in pore water of sediments and SPM sampled along the German part of the river Elbe...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30148024/factors-associated-with-blooms-of-cyanobacteria-in-a-large-shallow-lake-china
#15
Di Li, Naicheng Wu, Song Tang, Guanyong Su, Xuwen Li, Yong Zhang, Guoxiang Wang, Junyi Zhang, Hongling Liu, Markus Hecker, John P Giesy, Hongxia Yu
Background: Eutrophication of freshwater systems can result in blooms of phytoplankton, in many cases cyanobacteria. This can lead to shifts in structure and functions of phytoplankton communities adversely affecting the quality of drinking water sources, which in turn impairs public health. Relationships between structures of phytoplankton communities and concentrations of the toxicant, microcystin-leucine-arginine (MC-LR), have not been well examined in large shallow lakes. The present study investigated phytoplankton communities at seven locations from January to December of 2015 in Tai Lake, and relationships between structures and diversities of phytoplankton communities and water quality parameters, including concentrations of MC-LR and metals, were analyzed...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/30009109/in-vitro-or-not-in-vitro-a-short-journey-through-a-long-history
#16
REVIEW
Kristina Rehberger, Christian Kropf, Helmut Segner
The aim of ecotoxicology is to study toxic effects on constituents of ecosystems, with the protection goal being populations and communities rather than individual organisms. In this ecosystem perspective, the use of in vitro methodologies measuring cellular and subcellular endpoints at a first glance appears to be odd. Nevertheless, more recently in vitro approaches gained momentum in ecotoxicology. In this article, we will discuss important application domains of in vitro methods in ecotoxicology. One area is the use of in vitro assays to replace, reduce, and refine (3R) in vivo tests...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29984127/economic-growth-for-ecological-conversions-south-korean-case
#17
Hye Kyung Lee, Hwan Yong Kim
Background: Sprawl has been named as one of the critical reasons for the latest social problems in many parts of the world. This is particularly true for developing countries, as their national status largely depends on economic stability and interacts with the rise and decline of major cities. This study focuses on a detailed notion on environmental impact of physical expansion and answers how to specifically estimate the ecological impact of sprawl using the GIS and ecological valuation method...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29984126/combining-in-vitro-reporter-gene-bioassays-with-chemical-analysis-to-assess-changes-in-the-water-quality-along-the-ammer-river-southwestern-germany
#18
Maximilian E Müller, Beate I Escher, Marc Schwientek, Martina Werneburg, Christiane Zarfl, Christian Zwiener
Background: Rivers receive water and associated organic micropollutants from their entire catchment, including from urban, agricultural and natural sources, and constitute an important environmental component for catalyzing pollutant turnover. Environmental removal processes were extensively investigated under laboratory conditions in the past but there is still a lack of information on how organic micropollutants attenuate on the catchment scale. The aim of this study was to describe the chemical and toxicological profile of a 4th order river and to characterize in-stream processes...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29963348/institute-of-hydraulic-engineering-and-water-resources-management-rwth-aachen-university-an-overview-of-research-focus-and-training
#19
EDITORIAL
Elisa Classen, Holger Schüttrumpf
Water is an essential element and highly valuable resource in life. Between the priorities of environment, people and economy, it is of increasing importance to fully understand the fundamental force of water to be capable of handling waterborne events-such as flooding-manage and ensure water quality and availability, and utilize hydraulic energy. The Institute of Hydraulic Engineering and Water Resources Management (IWW) at RWTH Aachen University has a long research tradition in this field. Going back to the founding year of the university in 1870, the chair is based on the work of civil engineer Otto Intze, who is best known for his pioneering contributions in construction of dams and elevated water tanks...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29963347/effects-of-polystyrene-nanoparticles-on-the-microbiota-and-functional-diversity-of-enzymes-in-soil
#20
T T Awet, Y Kohl, F Meier, S Straskraba, A-L Grün, T Ruf, C Jost, R Drexel, E Tunc, C Emmerling
Background: The increasing production of nanoplastics and the fragmentation of microplastics into smaller particles suggest a plausible yet unclear hazard in the natural environment, such as soil. We investigated the short-term effects (28 days) of polystyrene nanoparticles (PS-NPs) on the activity and biomass of soil microbiota, and the functional diversity of soil enzymes at environmental relevant low levels in an incubation experiment. Results: Our results showed a significant decrease in microbial biomass in treatments of 100 and 1000 ng PS-NP g-1 DM throughout the incubation period...
2018: Environmental Sciences Europe
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