Bitte benutzen Sie diese Kennung, um auf die Ressource zu verweisen:
https://doi.org/10.21256/zhaw-20966| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Seven decades of hydrogeomorphological changes in a near‐natural (Sense River) and a hydropower‐regulated (Sarine River) pre‐Alpine river floodplain in Western Switzerland |
| Autor/-in: | Tonolla, Diego Geilhausen, Martin Döring, Michael |
| et. al: | No |
| DOI: | 10.1002/esp.5017 10.21256/zhaw-20966 |
| Erschienen in: | Earth Surface Processes and Landforms |
| Band(Heft): | 46 |
| Heft: | 1 |
| Seite(n): | 252 |
| Seiten bis: | 266 |
| Erscheinungsdatum: | 10-Okt-2020 |
| Verlag / Hrsg. Institution: | Wiley |
| ISSN: | 0197-9337 1096-9837 |
| Sprache: | Englisch |
| Schlagwörter: | Hydropower impacts; River and floodplain restoration; Altered flow and sediment regime; Aerial image analyses; Geomorphic changes; Active floodplain |
| Fachgebiet (DDC): | 333: Bodenwirtschaft und Ressourcen 551: Geologie und Hydrologie |
| Zusammenfassung: | Hydropower alteration of the natural flow and sediment regime can severely degrade hydromorphology, thereby threatening biodiversity and overall ecosystem processes of rivers and their floodplains. Using sequences of aerial images, we quantified seven decades (1938/1942–2013) of spatiotemporal changes in channel and floodplain morphology, as well as changes in the physical habitats, of three floodplain river reaches of the Swiss pre‐Alps, two hydropower‐regulated and one near‐natural. In the Sarine River floodplain, within the first decades of hydropower impairment, the magnitude and frequency of flood events (Q2, Q10, Q30) decreased substantially. As a result, the area of pioneer floodplain habitats that depend on flood activity and sediment dynamic, such as bare sediments, decreased dramatically by approximately 95%. However, by 2013 vegetated areas had generally increased in comparison to the pre‐regulation period in 1943, indicating general vegetative colonization. Between 1943 and 2013, the active channel underwent essential narrowing (up to 62% width reduction in the residual flow reach) and habitat turnover rates were very low (5% of the total floodplain area changed habitat type five to six times). In contrast, from the 1950s onwards, the near‐natural floodplain of the Sense River experienced recurrent narrowing and widening, and frequent changes between bare and vegetated areas, reflecting the shifting habitat mosaic concept typical for natural floodplains. In the three reaches investigated, we found that the active floodplain width and erosion of vegetated areas were primarily controlled by medium to large floods (Q10, Q30), which combined with reduced time intervals between ordinary floods ≥ Q2 most likely mobilized streambed sediments and limited the ability of vegetation to establish itself on bare gravel bars within the parafluvial zone. These findings can contribute to restoration action plans such as controlled flooding and sediment replenishments in the Sarine and other floodplain rivers of the Alps. |
| Weitere Angaben: | This is the peer reviewed version which has been published in final form at https://doi.org/10.1002/esp.5017 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/20966 |
| Volltext Version: | Akzeptierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Gesperrt bis: | 2021-10-11 |
| Departement: | Life Sciences und Facility Management |
| Organisationseinheit: | Institut für Umwelt und Natürliche Ressourcen (IUNR) |
| Publiziert im Rahmen des ZHAW-Projekts: | Nachhaltiges Auenmanagement und Wasserkraft - HyApp NRP70 |
| Enthalten in den Sammlungen: | Publikationen Life Sciences und Facility Management |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| 2020_Tonolla_etal_Seven-decades-of-hydrogeomorphological-changes_ESPL.pdf | Accepted Version | 3.49 MB | Adobe PDF |  Öffnen/Anzeigen |
Zur Langanzeige
Tonolla, D., Geilhausen, M., & Döring, M. (2020). Seven decades of hydrogeomorphological changes in a near‐natural (Sense River) and a hydropower‐regulated (Sarine River) pre‐Alpine river floodplain in Western Switzerland. Earth Surface Processes and Landforms, 46(1), 252–266. https://doi.org/10.1002/esp.5017
Tonolla, D., Geilhausen, M. and Döring, M. (2020) ‘Seven decades of hydrogeomorphological changes in a near‐natural (Sense River) and a hydropower‐regulated (Sarine River) pre‐Alpine river floodplain in Western Switzerland’, Earth Surface Processes and Landforms, 46(1), pp. 252–266. Available at: https://doi.org/10.1002/esp.5017.
D. Tonolla, M. Geilhausen, and M. Döring, “Seven decades of hydrogeomorphological changes in a near‐natural (Sense River) and a hydropower‐regulated (Sarine River) pre‐Alpine river floodplain in Western Switzerland,” Earth Surface Processes and Landforms, vol. 46, no. 1, pp. 252–266, Oct. 2020, doi: 10.1002/esp.5017.
TONOLLA, Diego, Martin GEILHAUSEN und Michael DÖRING, 2020. Seven decades of hydrogeomorphological changes in a near‐natural (Sense River) and a hydropower‐regulated (Sarine River) pre‐Alpine river floodplain in Western Switzerland. Earth Surface Processes and Landforms. 10 Oktober 2020. Bd. 46, Nr. 1, S. 252–266. DOI 10.1002/esp.5017
Tonolla, Diego, Martin Geilhausen, and Michael Döring. 2020. “Seven Decades of Hydrogeomorphological Changes in a near‐Natural (Sense River) and a Hydropower‐Regulated (Sarine River) Pre‐Alpine River Floodplain in Western Switzerland.” Earth Surface Processes and Landforms 46 (1): 252–66. https://doi.org/10.1002/esp.5017.
Tonolla, Diego, et al. “Seven Decades of Hydrogeomorphological Changes in a near‐Natural (Sense River) and a Hydropower‐Regulated (Sarine River) Pre‐Alpine River Floodplain in Western Switzerland.” Earth Surface Processes and Landforms, vol. 46, no. 1, Oct. 2020, pp. 252–66, https://doi.org/10.1002/esp.5017.
Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt, soweit nicht anderweitig angezeigt.