WFRF:(Sgier L.)
Sökning: WFRF:(Sgier L.) > (2016) > Mixed messages from...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04145naa a2200589 4500 | |
| 001 | oai:gup.ub.gu.se/233846 | |
| 003 | SwePub | |
| 008 | 240528s2016 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://gup.ub.gu.se/publication/2338462 URI |
| 024 | 7 | a https://doi.org/10.1007/s11356-015-4887-72 DOI |
| 040 | a (SwePub)gu | |
| 041 | a eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Kroll, A.4 aut |
| 245 | 1 0 | a Mixed messages from benthic microbial communities exposed to nanoparticulate and ionic silver: 3D structure picks up nano-specific effects, while EPS and traditional endpoints indicate a concentration-dependent impact of silver ions |
| 264 | c 2015-06-28 | |
| 264 | 1 | b Springer Science and Business Media LLC,c 2016 |
| 520 | a Silver nanoparticles (AgNP) are currently defined as emerging pollutants in surface water ecosystems. Whether the toxic effects of AgNP towards freshwater organisms are fully explainable by the release of ionic silver (Ag+) has not been conclusively elucidated. Long-term effects to benthic microbial communities (periphyton) that provide essential functions in stream ecosystems are unknown. The effects of exposure of periphyton to 2 and 20 mu g/L Ag+ (AgNO3) and AgNP (polyvinylpyrrolidone stabilised) were investigated in artificial indoor streams. The extracellular polymeric substances (EPS) and 3D biofilm structure, biomass, algae species, Ag concentrations in the water phase and bioassociated Ag were analysed. A strong decrease in total Ag was observed within 4 days. Bioassociated Ag was proportional to dissolved Ag indicating a rate limitation by diffusion across the diffusive boundary layer. Two micrograms per liter of AgNO3 or AgNP did not induce significant effects despite detectable bioassociation of Ag. The 20-mu g/L AgNO3 affected green algae and diatom communities, biomass and the ratio of polysaccharides to proteins in EPS. The 20-mu g/L AgNO3 and AgNP decreased biofilm volume to about 50 %, while the decrease of biomass was lower in 20 mu g/L AgNP samples than the 20-mu g/L AgNO3 indicating a compaction of the NP-exposed biofilms. Roughness coefficients were lower in 20 mu g/L AgNP-treated samples. The more traditional endpoints (biomass and diversity) indicated silver ion concentration-dependent effects, while the newly introduced parameters (3D structure and EPS) indicated both silver ion concentration-dependent effects and effects related to the silver species applied. | |
| 650 | 7 | a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng |
| 653 | a Biofilms | |
| 653 | a Periphyton | |
| 653 | a Silver nanoparticles | |
| 653 | a Community ecotoxicology | |
| 653 | a Extracellular polymeric | |
| 653 | a extracellular polymeric substances | |
| 653 | a artificial indoor streams | |
| 653 | a laser-scanning microscopy | |
| 653 | a near-bed turbulence | |
| 653 | a chlamydomonas-reinhardtii | |
| 653 | a heavy-metals | |
| 653 | a diatom communities | |
| 653 | a sierra-nevada | |
| 653 | a periphyton | |
| 653 | a biofilms | |
| 700 | 1 | a Matzke, M.4 aut |
| 700 | 1 | a Rybicki, M.4 aut |
| 700 | 1 | a Obert-Rauser, P.4 aut |
| 700 | 1 | a Burkart, C.4 aut |
| 700 | 1 | a Jurkschat, K.4 aut |
| 700 | 1 | a Verweij, R.4 aut |
| 700 | 1 | a Sgier, L.4 aut |
| 700 | 1 | a Jungmann, D.4 aut |
| 700 | 1 | a Backhaus, Thomas,d 1967u Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences4 aut0 (Swepub:gu)xbacth |
| 700 | 1 | a Svendsen, C.4 aut |
| 710 | 2 | a Göteborgs universitetb Institutionen för biologi och miljövetenskap4 org |
| 773 | 0 | t Environmental Science and Pollution Researchd : Springer Science and Business Media LLCg 23:5, s. 4218-4234q 23:5<4218-4234x 0944-1344x 1614-7499 |
| 856 | 4 | u https://link.springer.com/content/pdf/10.1007%2Fs11356-015-4887-7.pdf |
| 856 | 4 8 | u https://gup.ub.gu.se/publication/233846 |
| 856 | 4 8 | u https://doi.org/10.1007/s11356-015-4887-7 |
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