20.500.12556/DKUM-92485 Assessing the effects of a hydropower plant basin on fish spawning in an upstream river tributary Ocena vpliva jeza hidroelektrarne na drstenje rib v gorvodnem pritoku This paper presents a combined modeling approach to evaluate the ecological effects on the habitat of an upstream tributary of a river with a series of hydropower plants. The influence is investigated of the last planned hydropower plant to be built, which has a large impact on the river ecosystem. The new hydropower plant basin will affect the tributary with hydropeaking in the upstream basin. A simulation was conducted of spawning conditions for two protected fish species. The analysis combined a hydro-morphological model with a fish module that considers the water depth and velocity necessary for fish reproduction. The different river discharge scenarios were simulated, incorporating the hydropeaking effects of the new hydropower plant basin on the upstream tributary. With the new hydropower plant, sustainable measures are planned to prevent the damaging negative impacts that could lead to the degradation of the river ecosystem and the destruction of the existing ecosystem at the river’s confluence. The results indicate that, after the hydropower plant begins operation, the habitat`s suitability will decrease, and the planned sustainable measures will not provide a fully satisfactory solution. Članek predstavlja kombinacijo modelov za oceno ekoloških učinkov na habitat reke, na kateri je že veriga hidroelektrarn. Načrtovana je zadnja hidroelektrarna v verigi in treba je raziskati njen vpliv na ekosistem reke, pravzaprav na pritok reke pred novim jezom. Novi jez hidroelektrarne bo močno vplival na zgornji pritok z nihanji gladine. Izvedena je bila simulacija pogojev drstitve za dve zaščiteni vrsti rib. Analiza je kombinacija hidromorfološkega modela in modela indeksa habitatov, ki upošteva predvsem globino in hitrost vode, potrebne za reprodukcijo rib. Simulirani so različni scenariji pretoka reke, pri čemer so bili upoštevani učinki spremembe gladine jeza zaradi obratovanja hidroelektrarne. Z novo hidroelektrarno so načrtovani tudi trajnostni ukrepi za preprečevanje negativnih vplivov, ki bi lahko pripeljali do degradacije ekosistema reke in uničenja obstoječega ekosistema na sotočju rek. Rezultati kažejo, da bo po začetku obratovanja hidroelektrarne ustreznost ekosistema padla, načrtovani trajnostni ukrepi pa ne bodo zagotovili povsem zadovoljive rešitve. environmental impact habitat sustainability hydro-dynamic model vpliv na okolje trajnostni razvoj habitati hidrodinamični model true false true Fakulteta za energetiko Angleški jezik Slovenski jezik © Fakulteta za Energetiko Znanstveno delo 2025-04-11 12:14:40 2025-04-11 12:19:49 2025-11-06 14:16:22 0000-00-00 00:00:00 2024 0 0 Str. 21-33 št. 4 Letn. 17 dec. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-12-01 621.311.21 228212739 1855-5748 Hren_2024_Assessing_the_effects_of_a_hydropower_plant.pdf Hren_2024_Assessing_the_effects_of_a_hydropower_plant.pdf 1 E5AAC0ABEEF2085FA4439F7400638E1B 8982ad4ccef24224685da6fdbd0f16831fbb32ed3859e6cc02d1862c373aa12f 568bc9d8-16be-11f0-983e-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=190245 https://doi.org/10.18690/jet.17.4.21-33.2024 0 763ad1f6-16be-11f0-983e-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=190246 Fakulteta za energetiko Journal of energy technology 0 0 0