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Environmental Sciences Europe

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https://www.readbyqxmd.com/read/30221106/multiple-biomarker-responses-in-caged-benthic-gastropods-bellamya-aeruginosa-after-in-situ-exposure-to-taihu-lake-in-china
#1
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
#2
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 However, it could not prevent that many of these chemicals have been replaced by others with similar risks.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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/29951349/the-importance-of-sediments-in-ecological-quality-assessment-of-stream-headwaters-embryotoxicity-along-the-nidda-river-and-its-tributaries-in-central-hesse-germany
#14
Mona Schweizer, Andreas Dieterich, Núria Corral Morillas, Carla Dewald, Lukas Miksch, Sara Nelson, Arne Wick, Rita Triebskorn, Heinz-R Köhler
Background: Although the crucial importance of sediments in aquatic systems is well-known, sediments are often neglected as a factor in the evaluation of water quality assessment. To support and extend previous work in that field, this study was conducted to assess the impact of surface water and sediment on fish embryos in the case of a highly anthropogenically influenced river catchment in Central Hesse, Germany. Results: The results of 96 h post fertilisation fish embryo toxicity test with Danio rerio (according to OECD Guideline 236) revealed that river samples comprising both water and sediment exert pivotal effects in embryos, whereas surface water alone did not...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29930891/significance-thresholds-for-the-assessment-of-contaminated-groundwater-perfluorinated-and-polyfluorinated-chemicals
#15
REVIEW
Karl Theo von der Trenck, Rainer Konietzka, Annegret Biegel-Engler, Jan Brodsky, Andrea Hädicke, Arnold Quadflieg, Rudolf Stockerl, Thorsten Stahl
Background: Per- and polyfluorinated chemicals (PFC) do not occur naturally in the environment and are, therefore, of anthropogenic origin. As a consequence of their wide range of everyday applications and their extreme persistence in the environment, PFC have become ubiquitous in nature and can, therefore, be detected in groundwater as well as in many other environmental matrices. The German States' Water and Soil Consortia have compiled 'significance thresholds' (GFS) to assess groundwater contaminated with PFC...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29805951/comparison-of-software-tools-for-kinetic-evaluation-of-chemical-degradation-data
#16
Johannes Ranke, Janina Wöltjen, Stefan Meinecke
Background: For evaluating the fate of xenobiotics in the environment, a variety of degradation or environmental metabolism experiments are routinely conducted. The data generated in such experiments are evaluated by optimizing the parameters of kinetic models in a way that the model simulation fits the data. No comparison of the main software tools currently in use has been published to date. This article shows a comparison of numerical results as well as an overall, somewhat subjective comparison based on a scoring system using a set of criteria...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29805950/cationic-polyacrylamide-copolymers-pams-environmental-half-life-determination-in-sludge-treated-soil
#17
Dieter Hennecke, Angela Bauer, Monika Herrchen, Erik Wischerhoff, Friedhelm Gores
Background: Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils. To obtain detailed information on the polymer's fate in the soil compartment, the degradation of 14 C-radiolabelled PAM in an outdoor lysimeter was studied. Results: No plant uptake and leaching of radioactivity was observed...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29780681/the-swiss-ecotox-centre-bridging-the-gap-between-research-and-application
#18
REVIEW
Inge Werner
The Swiss Centre for Applied Ecotoxicology (Ecotox Centre) was created in recognition of the urgent societal need to provide expertise, education and tools for assessing the risks and effects of anthropogenic chemicals in the environment. Founded in 2008, the Ecotox Centre conducts applied, practice-oriented research in the areas of aquatic (water and sediment) and terrestrial (with focus on soil) ecotoxicology, and provides further education and consulting services to its stakeholders. To date, its most important activities focus on (1) the validation and standardization of bioassays for use in monitoring of water, sediment or soil quality and (2) the development of tools for retrospective risk assessment, including approaches to assess mixture risk...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29780680/evaluation-of-the-impact-of-construction-products-on-the-environment-by-leaching-of-possibly-hazardous-substances
#19
REVIEW
Nicole Bandow, Stefan Gartiser, Outi Ilvonen, Ute Schoknecht
Construction products are in contact with water (e.g., rain, seepage water) during their service lifetime and may release potentially harmful compounds by leaching processes. Monitoring studies showed that compounds attributed to construction products are found in storm water and the receiving bodies of water and that the release of biocides in urban areas can be comparable to the input of pesticides from agricultural uses. Therefore, a prospective risk assessment of such products is necessary. Laboratory leaching tests have been developed by the Technical Committee CEN/TC 351 and are ready to use...
2018: Environmental Sciences Europe
https://www.readbyqxmd.com/read/29721401/marine-litter-plastics-and-microplastics-and-their-toxic-chemicals-components-the-need-for-urgent-preventive-measures
#20
Frederic Gallo, Cristina Fossi, Roland Weber, David Santillo, Joao Sousa, Imogen Ingram, Angel Nadal, Dolores Romano
Persistent plastics, with an estimated lifetime for degradation of hundreds of years in marine conditions, can break up into micro- and nanoplastics over shorter timescales, thus facilitating their uptake by marine biota throughout the food chain. These polymers may contain chemical additives and contaminants, including some known endocrine disruptors that may be harmful at extremely low concentrations for marine biota, thus posing potential risks to marine ecosystems, biodiversity and food availability. Although there is still need to carry out focused scientific research to fill the knowledge gaps about the impacts of plastic litter in the marine environment (Wagner et al...
2018: Environmental Sciences Europe
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