Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-2697
Title: Evaluation of restoration and flow interactions on river structure and function : channel widening of the Thur river, Switzerland
Authors : Martin, Eduardo
Ryo, M.
Döring, Michael
Robinson, C. T.
Published in : Water
Volume(Issue) : 10
Issue : 4
Pages : 439
Publisher / Ed. Institution : MDPI
Issue Date: 2018
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Restoration; Flow regime; Sediment regime; Respiration; Macroinvertebrates
Subject (DDC) : 333: Economics of land and resources
577: Ecology
Abstract: Removal of lateral constraints to restore rivers has become increasingly common in river resource management, but little is known how the interaction of de-channelization with flow influences ecosystem structure and function. We evaluated the ecosystem effects of river widening to improve sediment relations in the Thur River, Switzerland, 12 years after implementation. We tested if restored and non-restored reaches differed in water physico-chemistry, hyporheic function, primary production, and macroinvertebrate density and composition in relation to the flow regime. Our results showed that (i) spatio-temporal variation in sediment respiration and macroinvertebrate taxonomic richness were driven by interactions between restoration and flow; (ii) riverbed conditions including substrate size, organic matter content, and groundwater–surface water exchange changed due to restoration, but (iii) physico-chemistry, hydraulic conditions, and primary production were not altered by restoration. Importantly, our study revealed that abiotic conditions, except channel morphology, changed only marginally, whereas other ecosystem attributes responded markedly to changes in flow-restoration interactions. These results highlight integrating a more holistic ecosystem perspective in the design and monitoring of restoration projects such as river widening in resource management, preferably in relation to flow-sediment regimes and interactions with the biotic components of the ecosystem.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Publication type: Article in scientific Journal
DOI : 10.3390/w10040439
10.21256/zhaw-2697
ISSN: 2073-4441
URI: https://digitalcollection.zhaw.ch/handle/11475/8227
Appears in Collections:Publikationen Life Sciences und Facility Management



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