A5043503952- Microplastics and Plastic Pollution
- biodegradable polymer synthesis and properties
- Recycling and Waste Management Techniques
- Aquatic Ecosystems and Phytoplankton Dynamics
- Pharmaceutical and Antibiotic Environmental Impacts
- Marine Biology and Environmental Chemistry
- Environmental Toxicology and Ecotoxicology
- Microbial Community Ecology and Physiology
- Nanoparticles: synthesis and applications
- Isotope Analysis in Ecology
- Effects and risks of endocrine disrupting chemicals
- Radioactive contamination and transfer
Stockholm University
2016-2019
In aquatic ecosystems, microplastics are a relatively new anthropogenic substrate that can readily be colonized by biofilm-forming organisms. To examine the effects of type on microbial community assembly, we exposed ambient Baltic bacterioplankton to plastic substrates commonly found in marine environments (polyethylene, polypropylene and polystyrene) as well native (cellulose) inert (glass beads) particles for 2 weeks under controlled conditions. The source communities those biofilms were...
The role of microplastic (MP) as a carrier persistent organic pollutants (POPs) to aquatic organisms has been topic debate. However, the reverse POP transport can occur if relative contaminant concentrations are higher in organism than microplastic. We evaluated effect on PCB removal planktonic animals by exposing cladoceran Daphnia magna with high body burden polychlorinated biphenyls (PCB 18, 40, 128 and 209) mixture algae; daphnids exposed only algae served control. As endpoints, we used...
The occurrence of microplastic in the environment is global concern. However, hazard assessment hampered by a lack adequate ecotoxicological methods because conceptual and practical problems with particle exposure. In environment, suspended solids (e.g., clay cellulose) same size range as microplastic, are ubiquitous. Therefore, it must be established whether addition to these background levels particulate material represents hazard. We present novel approach employing serial dilution...
Trophic magnification factor (TMF) analysis employs stable isotope signatures to derive biomagnification potential for environmental contaminants. This approach relies on species δ15N values aligning with their trophic position (TP). This, however, may not always be true, because toxic exposure can alter growth and allocation patterns. Here, effects of PCB (mixture PCB18, PCB40, PCB128, PCB209) δ13C as well processes driving these were explored using the cladoceran Daphnia magna. A two-part...
Abstract Concerns have been raised that microplastics (MP) can impact aquatic organisms by compromising their nutrition. However, little is understood about the mechanisms of adverse effects MP in suspension-feeders routinely ingest particles low nutritional value, such as mineral particles. We compared non-edible (MP and kaolin) mixed with microalgae on swimming filtering behavior a planktonic filtrator Daphnia magna ; incubations only algae served controls. The following questions were...
The occurrence of microplastic (MP) in the environment is global concern. MP risk assessment, however, currently hampered by lacking ecotoxicological methods due to conceptual and practical problems with particle exposure. Natural particles similar size as MP, e.g., clay cellulose, occur abundantly environment. For assessment regulation it must be established whether addition these represents an additional hazard. We present a novel approach employing serial dilution reference particles,...
Abstract The role of microplastic (MP) as a carrier persistent organic pollutants (POPs) to aquatic organisms has been topic debate. However, theoretically, the reverse POP transport can occur at higher relative contaminant concentrations in organism than microplastic. effect on PCB removal planktonic animals was evaluated using cladoceran Daphnia magna with high body burden polychlorinated biphenyls (PCB 18, 40, 128 and 209) exposed mixture algae (with 77% MP by mass); daphnids only served...