Das Wasserkraftpotenzial in Deutschland und Europa

Anderer, Pia

doi:10.1007/978-3-658-00996-0_5

Cited by 1 publication

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Accordingly, National legislations like the German Renewable Energy Act have been amended setting incentives to increase the amount of renewable energies, for example, higher feed‐in tariffs for energy generated from small hydropower and other renewable sources. By stimulating renewable energy production from hydropower and the full exploration of the hydropower potential of rivers (Anderer, ; Anderer, Dumont, Heimerl, Ruprecht, & Wolf‐Schumann, ), the implementation of Renewable Energy Directive worsens the ecological status of rivers. Increasing hydroelectricity production will compromise the biodiversity conservation goals.…”

Section: Introductionmentioning

confidence: 99%

Fish passes design discharge requirements for successful operation

Wolter

Schomaker

2019

River Research & Apps

View full text Add to dashboard Cite

Longitudinal connectivity is one of the prime issues addressed in river restoration our days. At the same time, mitigation of climate change impacts by modes of renewable energy increasingly puts pressure on the remaining free flowing river stretches for hydroelectricity production. At the site level, this trade‐off manifests in the negotiation of water for upstream and downstream fish passage versus losses for hydroelectricity production. This study has compiled and analysed 193 studies evaluating fish passes designed to provide upstream migration for all species and size classes of the respective river system. The overall assessment of functioning and discharge dedicated to fish pass maintenance, site, and river characters were provided by the studies. The main objective here was deriving general guidance for the minimum amount of water needed for fully functioning upstream fish passage in relation to river size. There was a significant correlation between functionality and design discharge of a fish pass. Fully functioning fish passes (N = 92) had median design discharge of 5% of the mean average discharge of the river, restrictedly functioning of 1.1% and not functioning of 0.22%. A power model could be derived of design discharge needs in relation to river discharge, which is inversely related to river size. In large rivers, a rather small share of mean discharge is sufficient, whereas in small rivers, it cannot be further downscaled due to dimensions. This model might provide first guidance in adjusting needs for both hydroelectricity generation and fish conservation in regulated rivers.

show abstract

Section: Introductionmentioning

confidence: 99%