| Tekijä (t): | Widén, Åsa Malm Renöfält, Birgitta Degerman, Erik Wisaeus, Dag Jansson, Roland |
|---|---|
| Aineiston nimi: | Environmental Flow Scenarios for a Regulated River System: Projecting Catchment-Wide Ecosystem Benefits and Consequences for Hydroelectric Production |
| Verkko-osoite: | https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2021WR030297 |
| Aineistolaji: | artikkeli |
| Asiasanat: | jokikunnostukset, järvikunnostus - järvikunnostukset, kasvillisuus, kestävä kehitys, kunnostus - kunnostukset, luonnon monimuotoisuus, Ruotsi, vedenlaatu - veden laatu, vesikasvillisuus, vesivoima, vesivoimalat - vesivoimalaitokset, ympäristö, ympäristön tila, ympäristövaikutukset |
| Kustantaja: | AGU Advancing Earth and Space Science |
| Painopaikka: | |
| Vuosi: | 2021 |
| Sivumäärä: | 22 |
| ISBN/ISSN: | |
| Lehti/sarja ym.: | Water Resources Research, Research article 10.1029/2021WR030297 |
| Lisätietoa: | Abstract: To enable prioritization among measures for ecological restoration, knowing the expected benefits and consequences of implementation is imperative but rarely explicitly quantified. We developed a novel method to prioritize among environmental flow measures to rehabilitate ecosystems in the Ume River catchment in northern Sweden, a river system heavily regulated for hydropower production. Our strategy was to identify measures with minimal impact on hydropower production while providing substantial environmental benefits... Implementing restrictions on zero-flow events by mandating minimum discharge at all run-of-river hydropower stations and allocating 1%–12% of mean annual discharge to bypassed reaches in the entire catchment would result in a 2.1% loss of annual electricity production. Adding flow to fishways would increase the loss to 3.1% per year. With implementation of more natural water-level fluctuations in run-of-river impoundments, the loss increases to 3.8%. These actions would increase the habitat for lotic species like the grayling Thymallus more than threefold and increase the area of riparian vegetation by about 66%. Our method forms a basis for ongoing implementation of nationwide environmental rehabilitation schemes. |
| Sijainti: | H-Kunnostukset: järvet, joet, purot ym. |