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Reference Category Conference contributions
DOI / URL link
Title (Primary) Spatial variability of heavy metal pollution in groyne fields of the middle Elbe – implication for sediment monitoring and risk assessment
Title (Secondary) 38th IAD Conference, June 2010, Dresden, Germany, »Large River Basins: Danube meets Elbe. Challenges – Strategies – Solutions«
Author Baborowski, M.; Morgenstern, P.; Janke, T.; Westrich, B.;
Year 2010
Department FLOEK; ANA;
Language englisch;
Keywords Elbe; sediments; transport; heavy metals; monitoring strategies
Abstract

  Many European rivers like Danube, Elbe and Rhine have been regulated by engineering works for navigation and bank erosion protection. Regulating cross structures along the river banks, so called groynes, concentrate the discharge on the middle part of the river channel and hence, provide higher water level for navigation during low discharge periods. During low water level suspended material is being trapped in the slowly flowing water of the groyne fields and partly deposited whereas sediments can be re-suspended during high water stage (Ockenfeld & Guhr 2003). The German part of the Elbe River has a length of about 730 km, approximately 485 km of this stretch being regulated by about 6900 groynes field elements. Beside groyne fields, floodplains of about 800 km2 are the main morphological features of the middle part of the Elbe River. In the past, organic and inorganic pollutants have been discharged into the river system and are still present in deposited sediments due to historical contamination by industrial and municipal activities in the river basin (Heise et al. 2008). However, the water quality of the Elbe River and its tributaries improved considerably within the last two decades (Lehmann & Rode 2001; Zerling et al. 2003; Klemm et al. 2005; Guhr et al. 2006) comparable to other European rivers (Vink et al. 1999). Remobilization of deposited contaminants is a key issue for the river sediment management because of its impact on river ecology. Erosion, dispersion and re-deposition of groyne field sediments are important processes for environmental risk assessment. Hence, pollution sources must be explored and knowledge about erosion stability of fine contaminated sediments must be available to foster a sustainable development of the river system. As shown by Haag et al. (2001) and Gerbersdorf et al. (2007), cohesive sediment stability is characterized by high variability as depending on physico-chemical and biological properties. To assess the spatial variability of the heavy metal pollution of Elbe groyne field sediments, investigations considering horizontal and vertical gradients were performed.

ID 11396
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11396
Baborowski, M., Morgenstern, P., Janke, T., Westrich, B. (2010):
Spatial variability of heavy metal pollution in groyne fields of the middle Elbe – implication for sediment monitoring and risk assessment
38th IAD Conference, June 2010, Dresden, Germany, »Large River Basins: Danube meets Elbe. Challenges – Strategies – Solutions«