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Matys Grygar, Tomáš ; Hošek, Michal ; Navrátil, Tomáš ; Bednárek, Jan ; Hönig, Jindřich ; Elznicová, Jitka ; Pacina, Jan ; Rohovec, Jan ; Sedláček, Jan ; Sass, Oliver:
Lessons Learnt from the Revitalisation of Chemical Factory in Marktredwitz and River Banks Downstream: When "Renaturation" Can Be Harmful.
In: Water.
Bd. 14
(2022)
Heft 21
.
- 3481.
ISSN 2073-4441
DOI: https://doi.org/10.3390/w14213481
Abstract
Our study addressed mercury contamination hotspots that originated from Chemical Factory Marktredwitz, Germany. The factory was abandoned in 1985 but its legacy has been persistently endangering the river ecosystem of the Ohře River, a Labe (Elbe) River tributary in the Czech Republic. We identified the timing for the peak contamination of fine sediments entering the Skalka Reservoir located on the Ohře River downstream of the Czech German boundary. Age constraints for the reservoir sediments were obtained using gamma spectrometry analyses of 137Cs and unsupported (excess) 210Pb. We also summarised historical and current Hg concentrations in suspended particulate matter in the Kössein–Röslau–Ohře river system and recent Hg concentrations in aquatic plants. Secondary contamination and its transfer to the Czech stretch of the Ohře River and the Skalka Reservoir through severely contaminated suspended material peaked during the period of factory closure and the start of remediation. The Hg contamination import to the Czech Republic is not likely to improve if the river is left without traditional management of bank reinforcement. This case study highlights a gap in safety regulations for the management of severely contaminated rivers and demonstrates the need to consider the role of historical contamination in river ‘renaturation’.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | contaminated rivers; embankment; revitalisation; renaturation; mercury |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Geomorphologie > Lehrstuhl Geomorphologie - Univ.-Prof. Dr. Oliver Sass |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften; Biologie |
| Eingestellt am: | 29 Jan 2024 12:03 |
| Letzte Änderung: | 29 Jan 2024 12:03 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/88405 |