University of Oulu

Jelovica, B., Marttila, H., Ashraf, F. B., Kløve, B., & Torabi Haghighi, A. (2023). A probability-based model to quantify the impact of hydropeaking on habitat suitability in rivers. River Research and Applications, 39( 3), 490– 500.

A probability-based model to quantify the impact of hydropeaking on habitat suitability in rivers

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Author: Jelovica, Bähar1; Marttila, Hannu1; Ashraf, Faisal Bin2;
Organizations: 1Water, Energy and Environmental Engineering Research Unit, University of Oulu, Oulu, Finland
2Societies, Climate, and Policy Support at SEI Head Quarters, Stockholm Environment Institute, Stockholm, Sweden
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 4.4 MB)
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Language: English
Published: John Wiley & Sons, 2023
Publish Date: 2023-06-28


A negative effect of hydropower on river environment includes rapid changes in flow and habitat conditions. Any sudden flow change could force fish to move towards a refuge area in a short period of time, causing serious disturbances in the life cycle of the fish. A probability-based model was developed to quantify the impact of hydropeaking on habitat suitability for two fish species, brown trout (Salamo trutta) and Grayling (Thymallus thymallus). The model used habitat preference curves, river velocity and depth to develop the suitability maps. The suitability maps reveal that habitat suitability deteriorates as flow increases in the studied part of the river. The probability model showed that, on average, suitability indices are higher for adult grayling than juvenile trout in hydropeaking events in this part of the river. The method developed shows the potential to be used in river management and the evaluation of hydropeaking impacts in river systems affected by hydropower.

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Series: River research and applications
ISSN: 1535-1459
ISSN-E: 1535-1467
ISSN-L: 1535-1459
Volume: 39
Issue: 3
Pages: 490 - 500
DOI: 10.1002/rra.4050
Type of Publication: A1 Journal article – refereed
Field of Science: 218 Environmental engineering
Funding: The author would like to thank Olvi-Foundation (Grant No. 20210718). The study was supported by Academy of Finland funded EcoRiver (number: 323810) and Hydro-RDI (number: 337523) projects.
Academy of Finland Grant Number: 323810
Detailed Information: 323810 (Academy of Finland Funding decision)
337523 (Academy of Finland Funding decision)
Copyright information: © 2022 The Authors. River Research and Applications published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium,provided the original work is properly cited.