Evaluation of mitigation measures to reduce hydropeaking impacts on river ecosystems a a case study from the Swiss Alps

Tonolla, Diego; Bruder, Andreas; Schweizer, Steffen

doi:10.1016/j.scitotenv.2016.09.101

Full metadata record

DC Field	Value	Language
dc.contributor.author	Tonolla, Diego	-
dc.contributor.author	Bruder, Andreas	-
dc.contributor.author	Schweizer, Steffen	-
dc.date.accessioned	2018-06-07T10:31:46Z	-
dc.date.available	2018-06-07T10:31:46Z	-
dc.date.issued	2017	-
dc.identifier.issn	0048-9697	de_CH
dc.identifier.issn	1879-1026	de_CH
dc.identifier.uri	https://digitalcollection.zhaw.ch/handle/11475/6663	-
dc.description.abstract	New Swiss legislation obligates hydropower plant owners to reduce detrimental impacts on rivers ecosystems caused by hydropeaking. We used a case study in the Swiss Alps (hydropower company Kraftwerke Oberhasli AG) to develop an efficient and successful procedure for the ecological evaluation of such impacts, and to predict the effects of possible mitigation measures. We evaluated the following scenarios using 12 biotic and abiotic indicators: the pre-mitigation scenario (i.e. current state), the future scenario with increased turbine capacity but without mitigation measures, and future scenarios with increased turbine capacity and four alternative mitigation measures. The evaluation was based on representative hydrographs and quantitative or qualitative prediction of the indicators. Despite uncertainties in the ecological responses and the future operation mode of the hydropower plant, the procedure allowed the most appropriate mitigation measure to be identified. This measure combines a basin and a cavern at a total retention volume of 80,000m3, allowing for substantial dampening in the flow falling and ramping rates and in turn considerable reduction in stranding risk for juvenile trout and in macroinvertebrate drift. In general, this retention volume had the greatest predicted ecological benefit and can also, to some extent, compensate for possible modifications in the hydropower operation regime in the future, e.g. due to climate change, changes in the energy market, and changes in river morphology. Furthermore, it also allows for more specific seasonal regulations of retention volume during ecologically sensitive periods (e.g. fish spawning seasons). Overall experience gained from our case study is expected to support other hydropeaking mitigation projects.	de_CH
dc.language.iso	en	de_CH
dc.publisher	Elsevier	de_CH
dc.relation.ispartof	Science of the Total Environment	de_CH
dc.rights	Licence according to publishing contract	de_CH
dc.subject	Alpine river	de_CH
dc.subject	Altered flow regime	de_CH
dc.subject	Ecological indicator	de_CH
dc.subject	Hydropower	de_CH
dc.subject	River restoration	de_CH
dc.subject.ddc	577: Ökologie	de_CH
dc.title	Evaluation of mitigation measures to reduce hydropeaking impacts on river ecosystems a a case study from the Swiss Alps	de_CH
dc.type	Beitrag in wissenschaftlicher Zeitschrift	de_CH
dcterms.type	Text	de_CH
zhaw.departement	Life Sciences und Facility Management	de_CH
zhaw.organisationalunit	Institut für Umwelt und Natürliche Ressourcen (IUNR)	de_CH
dc.identifier.doi	10.1016/j.scitotenv.2016.09.101	de_CH
dc.identifier.pmid	27653558	de_CH
zhaw.funding.eu	No	de_CH
zhaw.originated.zhaw	Yes	de_CH
zhaw.pages.end	604	de_CH
zhaw.pages.start	594	de_CH
zhaw.publication.status	publishedVersion	de_CH
zhaw.volume	574	de_CH
zhaw.publication.review	Peer review (Publikation)	de_CH
zhaw.webfeed	Ökohydrologie	de_CH
Appears in collections:	Publikationen Life Sciences und Facility Management

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Tonolla, D., Bruder, A., & Schweizer, S. (2017). Evaluation of mitigation measures to reduce hydropeaking impacts on river ecosystems a a case study from the Swiss Alps. Science of the Total Environment, 574, 594–604. https://doi.org/10.1016/j.scitotenv.2016.09.101

Tonolla, D., Bruder, A. and Schweizer, S. (2017) ‘Evaluation of mitigation measures to reduce hydropeaking impacts on river ecosystems a a case study from the Swiss Alps’, Science of the Total Environment, 574, pp. 594–604. Available at: https://doi.org/10.1016/j.scitotenv.2016.09.101.

D. Tonolla, A. Bruder, and S. Schweizer, “Evaluation of mitigation measures to reduce hydropeaking impacts on river ecosystems a a case study from the Swiss Alps,” Science of the Total Environment, vol. 574, pp. 594–604, 2017, doi: 10.1016/j.scitotenv.2016.09.101.

TONOLLA, Diego, Andreas BRUDER und Steffen SCHWEIZER, 2017. Evaluation of mitigation measures to reduce hydropeaking impacts on river ecosystems a a case study from the Swiss Alps. Science of the Total Environment. 2017. Bd. 574, S. 594–604. DOI 10.1016/j.scitotenv.2016.09.101

Tonolla, Diego, Andreas Bruder, and Steffen Schweizer. 2017. “Evaluation of Mitigation Measures to Reduce Hydropeaking Impacts on River Ecosystems a a Case Study from the Swiss Alps.” Science of the Total Environment 574: 594–604. https://doi.org/10.1016/j.scitotenv.2016.09.101.

Tonolla, Diego, et al. “Evaluation of Mitigation Measures to Reduce Hydropeaking Impacts on River Ecosystems a a Case Study from the Swiss Alps.” Science of the Total Environment, vol. 574, 2017, pp. 594–604, https://doi.org/10.1016/j.scitotenv.2016.09.101.