Ecological Engineering 113 (2018) 1–10 Contents lists available at ScienceDirect Ecological Engineering journal homepage: www.elsevier.com/locate/ecoleng To mow or not to mow: reed bioﬁlms as denitriﬁcation hotspots in drainage canals Elisa Soana , Anna Gavioli, Elena Tamburini, Elisa Anna Fano, Giuseppe Castaldelli Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy ARTICLE I NFO ABSTRACT Keywords: In shallow-water systems with calm hydrodynamic, dense vegetation stands provide most of the available sur- Bioﬁlms face for periphyton development. The large ratio between biological active surfaces and water volume ampliﬁes Nitrate removal the inﬂuence of bioﬁlm activity on water chemistry, resulting the key factor responsible for nitrogen removal Denitriﬁcation performance of wetlands and waterways. However, the denitriﬁcation capacity of bioﬁlms on emergent mac- N open-channel method rophytes remains understudied, especially if investigated on dead stems during the non-vegetative season. Water velocity The aims of the present study were: 1) to quantify the role of bioﬁlms colonizing dead stems of Phragmites Canal network − − australis in NO mitigation via denitriﬁcation in winter (∼11 °C) in a NO -rich drainage canal; 2) to de- 3 3 −1 termine how the bioﬁlm denitrifying capacity varies as a function
Ecological Engineering – Elsevier
Published: Apr 1, 2018
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