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Can energy depletion of wild Atlantic salmon kelts negotiating hydropower facilities lead to reduced survival?
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SYSNO ASEP 0538806 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Can energy depletion of wild Atlantic salmon kelts negotiating hydropower facilities lead to reduced survival? Tvůrce(i) Baktoft, H. (DK)
Gjelland, K.O. (NO)
Szabo-Meszaros, M. (NO)
Silva, A.T. (NO)
Říha, Milan (BC-A) RID, ORCID
Okland, F. (NO)
Alfredsen, K. (NO)
Forseth, T. (NO)Celkový počet autorů 8 Číslo článku 7341 Zdroj.dok. Sustainability. - : MDPI
Roč. 12, č. 18 (2020), s. 1-12Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova high-resolution 3D telemetry ; 3D hydraulic modeling ; anthropogenic structures ; river connectivity ; energetics model ; energy expenditure Vědní obor RIV EG - Zoologie Obor OECD Zoology Způsob publikování Open access Institucionální podpora BC-A - RVO:60077344 UT WOS 000584282200001 EID SCOPUS 85091707185 DOI 10.3390/su12187341 Anotace Repeat spawners constitute an important component of Atlantic salmon populations, but survival of post-spawning individuals (kelts) are often compromised by anthropogenic structures such as hydropower plants (HPPs). Potential effects of HPPs include migration delays and associated increased energy depletion, which potentially results in increased overall mortality. We combined a detailed 3D hydraulic model with high-resolution 3D tracking of tagged kelts (length 73-104 cm) to obtain estimates of kelt movement through water. These estimates were then used in an energetics model to estimate hourly energy expenditure while negotiating the HPP area. Hourly kelt energy expenditure varied between 0.8 and 10.1 kJ x h(-1) and was dependent on kelt length. Degree of additional energy depletion can amount to several percent of remaining energy content (our study indicates 4-5 percentage points) potentially leading to reduced post-spawning survival. In turn, this can nullify the iteroparous breeding strategy and jeopardize long-term stability and persistence of Atlantic salmon populations inhabiting HPP rivers. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2021 Elektronická adresa https://doi.org/10.3390/su12187341
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