Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival?
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 d...
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MDPI AG
2020
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Online Access: | https://doi.org/10.3390/su12187341 https://doaj.org/article/0db948f90a17422daeb46bf1df02e276 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:0db948f90a17422daeb46bf1df02e276 2023-05-15T15:30:21+02:00 Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? Henrik Baktoft Karl Ø. Gjelland Marcell Szabo-Meszaros Ana T. Silva Milan Riha Finn Økland Knut Alfredsen Torbjørn Forseth 2020-09-01 https://doi.org/10.3390/su12187341 https://doaj.org/article/0db948f90a17422daeb46bf1df02e276 en eng MDPI AG doi:10.3390/su12187341 2071-1050 https://doaj.org/article/0db948f90a17422daeb46bf1df02e276 undefined Sustainability, Vol 12, Iss 7341, p 7341 (2020) high-resolution 3D telemetry 3D hydraulic modeling anthropogenic structures river connectivity energetics model energy expenditure envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.3390/su12187341 2023-01-22T19:30:37Z 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 × 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. Article in Journal/Newspaper Atlantic salmon Unknown Sustainability 12 18 7341 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
high-resolution 3D telemetry 3D hydraulic modeling anthropogenic structures river connectivity energetics model energy expenditure envir geo |
spellingShingle |
high-resolution 3D telemetry 3D hydraulic modeling anthropogenic structures river connectivity energetics model energy expenditure envir geo Henrik Baktoft Karl Ø. Gjelland Marcell Szabo-Meszaros Ana T. Silva Milan Riha Finn Økland Knut Alfredsen Torbjørn Forseth Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
topic_facet |
high-resolution 3D telemetry 3D hydraulic modeling anthropogenic structures river connectivity energetics model energy expenditure envir geo |
description |
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 × 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. |
format |
Article in Journal/Newspaper |
author |
Henrik Baktoft Karl Ø. Gjelland Marcell Szabo-Meszaros Ana T. Silva Milan Riha Finn Økland Knut Alfredsen Torbjørn Forseth |
author_facet |
Henrik Baktoft Karl Ø. Gjelland Marcell Szabo-Meszaros Ana T. Silva Milan Riha Finn Økland Knut Alfredsen Torbjørn Forseth |
author_sort |
Henrik Baktoft |
title |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_short |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_full |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_fullStr |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_full_unstemmed |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_sort |
can energy depletion of wild atlantic salmon kelts negotiating hydropower facilities lead to reduced survival? |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/su12187341 https://doaj.org/article/0db948f90a17422daeb46bf1df02e276 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Sustainability, Vol 12, Iss 7341, p 7341 (2020) |
op_relation |
doi:10.3390/su12187341 2071-1050 https://doaj.org/article/0db948f90a17422daeb46bf1df02e276 |
op_rights |
undefined |
op_doi |
https://doi.org/10.3390/su12187341 |
container_title |
Sustainability |
container_volume |
12 |
container_issue |
18 |
container_start_page |
7341 |
_version_ |
1766360794627309568 |